| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | ||
| 3 | SLEPc - Scalable Library for Eigenvalue Problem Computations | ||
| 4 | Copyright (c) 2002-, Universitat Politecnica de Valencia, Spain | ||
| 5 | |||
| 6 | This file is part of SLEPc. | ||
| 7 | SLEPc is distributed under a 2-clause BSD license (see LICENSE). | ||
| 8 | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | ||
| 9 | */ | ||
| 10 | /* | ||
| 11 | EPS routines related to options that can be set via the command-line | ||
| 12 | or procedurally. | ||
| 13 | */ | ||
| 14 | |||
| 15 | #include <slepc/private/epsimpl.h> /*I "slepceps.h" I*/ | ||
| 16 | #include <petscdraw.h> | ||
| 17 | |||
| 18 | /*@C | ||
| 19 | EPSMonitorSetFromOptions - Sets a monitor function and viewer appropriate for the type | ||
| 20 | indicated by the user. | ||
| 21 | |||
| 22 | Collective | ||
| 23 | |||
| 24 | Input Parameters: | ||
| 25 | + eps - the linear eigensolver context | ||
| 26 | . opt - the command line option for this monitor | ||
| 27 | . name - the monitor type one is seeking | ||
| 28 | . ctx - an optional user context for the monitor, or `NULL` | ||
| 29 | - trackall - whether this monitor tracks all eigenvalues or not | ||
| 30 | |||
| 31 | Level: developer | ||
| 32 | |||
| 33 | .seealso: [](ch:eps), `EPSMonitorSet()`, `EPSSetTrackAll()` | ||
| 34 | @*/ | ||
| 35 | 20568 | PetscErrorCode EPSMonitorSetFromOptions(EPS eps,const char opt[],const char name[],PetscCtx ctx,PetscBool trackall) | |
| 36 | { | ||
| 37 | 20568 | PetscErrorCode (*mfunc)(EPS,PetscInt,PetscInt,PetscScalar*,PetscScalar*,PetscReal*,PetscInt,void*); | |
| 38 | 20568 | PetscErrorCode (*cfunc)(PetscViewer,PetscViewerFormat,void*,PetscViewerAndFormat**); | |
| 39 | 20568 | PetscErrorCode (*dfunc)(PetscViewerAndFormat**); | |
| 40 | 20568 | PetscViewerAndFormat *vf; | |
| 41 | 20568 | PetscViewer viewer; | |
| 42 | 20568 | PetscViewerFormat format; | |
| 43 | 20568 | PetscViewerType vtype; | |
| 44 | 20568 | char key[PETSC_MAX_PATH_LEN]; | |
| 45 | 20568 | PetscBool flg; | |
| 46 | |||
| 47 |
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20568 | PetscFunctionBegin; |
| 48 |
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20568 | PetscCall(PetscOptionsCreateViewer(PetscObjectComm((PetscObject)eps),((PetscObject)eps)->options,((PetscObject)eps)->prefix,opt,&viewer,&format,&flg)); |
| 49 |
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20568 | if (!flg) PetscFunctionReturn(PETSC_SUCCESS); |
| 50 | |||
| 51 |
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80 | PetscCall(PetscViewerGetType(viewer,&vtype)); |
| 52 |
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80 | PetscCall(SlepcMonitorMakeKey_Internal(name,vtype,format,key)); |
| 53 |
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80 | PetscCall(PetscFunctionListFind(EPSMonitorList,key,&mfunc)); |
| 54 |
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80 | PetscCheck(mfunc,PetscObjectComm((PetscObject)eps),PETSC_ERR_SUP,"Specified viewer and format not supported"); |
| 55 |
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80 | PetscCall(PetscFunctionListFind(EPSMonitorCreateList,key,&cfunc)); |
| 56 |
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80 | PetscCall(PetscFunctionListFind(EPSMonitorDestroyList,key,&dfunc)); |
| 57 |
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80 | if (!cfunc) cfunc = PetscViewerAndFormatCreate_Internal; |
| 58 |
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80 | if (!dfunc) dfunc = PetscViewerAndFormatDestroy; |
| 59 | |||
| 60 |
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80 | PetscCall((*cfunc)(viewer,format,ctx,&vf)); |
| 61 |
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80 | PetscCall(PetscViewerDestroy(&viewer)); |
| 62 |
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80 | PetscCall(EPSMonitorSet(eps,mfunc,vf,(PetscCtxDestroyFn*)dfunc)); |
| 63 |
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80 | if (trackall) PetscCall(EPSSetTrackAll(eps,PETSC_TRUE)); |
| 64 |
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16 | PetscFunctionReturn(PETSC_SUCCESS); |
| 65 | } | ||
| 66 | |||
| 67 | /*@ | ||
| 68 | EPSSetFromOptions - Sets `EPS` options from the options database. | ||
| 69 | This routine must be called before `EPSSetUp()` if the user is to be | ||
| 70 | allowed to configure the solver. | ||
| 71 | |||
| 72 | Collective | ||
| 73 | |||
| 74 | Input Parameter: | ||
| 75 | . eps - the linear eigensolver context | ||
| 76 | |||
| 77 | Note: | ||
| 78 | To see all options, run your program with the `-help` option. | ||
| 79 | |||
| 80 | Level: beginner | ||
| 81 | |||
| 82 | .seealso: [](ch:eps), `EPSSetOptionsPrefix()` | ||
| 83 | @*/ | ||
| 84 | 6856 | PetscErrorCode EPSSetFromOptions(EPS eps) | |
| 85 | { | ||
| 86 | 6856 | char type[256]; | |
| 87 | 6856 | PetscBool set,flg,flg1,flg2,flg3,bval; | |
| 88 | 6856 | PetscReal r,array[2]={0,0}; | |
| 89 | 6856 | PetscScalar s; | |
| 90 | 6856 | PetscInt i,j,k; | |
| 91 | 6856 | EPSBalance bal; | |
| 92 | |||
| 93 |
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6856 | PetscFunctionBegin; |
| 94 |
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6856 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 95 |
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6856 | PetscCall(EPSRegisterAll()); |
| 96 |
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20568 | PetscObjectOptionsBegin((PetscObject)eps); |
| 97 |
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7489 | PetscCall(PetscOptionsFList("-eps_type","Eigensolver method","EPSSetType",EPSList,(char*)(((PetscObject)eps)->type_name?((PetscObject)eps)->type_name:EPSKRYLOVSCHUR),type,sizeof(type),&flg)); |
| 98 |
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6856 | if (flg) PetscCall(EPSSetType(eps,type)); |
| 99 |
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4329 | else if (!((PetscObject)eps)->type_name) PetscCall(EPSSetType(eps,EPSKRYLOVSCHUR)); |
| 100 | |||
| 101 |
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6856 | PetscCall(PetscOptionsBoolGroupBegin("-eps_hermitian","Hermitian eigenvalue problem","EPSSetProblemType",&flg)); |
| 102 |
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6856 | if (flg) PetscCall(EPSSetProblemType(eps,EPS_HEP)); |
| 103 |
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6856 | PetscCall(PetscOptionsBoolGroup("-eps_gen_hermitian","Generalized Hermitian eigenvalue problem","EPSSetProblemType",&flg)); |
| 104 |
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6856 | if (flg) PetscCall(EPSSetProblemType(eps,EPS_GHEP)); |
| 105 |
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6856 | PetscCall(PetscOptionsBoolGroup("-eps_non_hermitian","Non-Hermitian eigenvalue problem","EPSSetProblemType",&flg)); |
| 106 |
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6856 | if (flg) PetscCall(EPSSetProblemType(eps,EPS_NHEP)); |
| 107 |
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6856 | PetscCall(PetscOptionsBoolGroup("-eps_gen_non_hermitian","Generalized non-Hermitian eigenvalue problem","EPSSetProblemType",&flg)); |
| 108 |
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6856 | if (flg) PetscCall(EPSSetProblemType(eps,EPS_GNHEP)); |
| 109 |
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6856 | PetscCall(PetscOptionsBoolGroup("-eps_pos_gen_non_hermitian","Generalized non-Hermitian eigenvalue problem with positive semi-definite B","EPSSetProblemType",&flg)); |
| 110 |
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6856 | if (flg) PetscCall(EPSSetProblemType(eps,EPS_PGNHEP)); |
| 111 |
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6856 | PetscCall(PetscOptionsBoolGroup("-eps_gen_indefinite","Generalized Hermitian-indefinite eigenvalue problem","EPSSetProblemType",&flg)); |
| 112 |
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6856 | if (flg) PetscCall(EPSSetProblemType(eps,EPS_GHIEP)); |
| 113 |
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6856 | PetscCall(PetscOptionsBoolGroup("-eps_bse","Structured Bethe-Salpeter eigenvalue problem","EPSSetProblemType",&flg)); |
| 114 |
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6856 | if (flg) PetscCall(EPSSetProblemType(eps,EPS_BSE)); |
| 115 |
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6856 | PetscCall(PetscOptionsBoolGroup("-eps_hamiltonian","Structured Hamiltonian eigenvalue problem","EPSSetProblemType",&flg)); |
| 116 |
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6856 | if (flg) PetscCall(EPSSetProblemType(eps,EPS_HAMILT)); |
| 117 |
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6856 | PetscCall(PetscOptionsBoolGroupEnd("-eps_lrep","Structured Linear Response eigenvalue problem","EPSSetProblemType",&flg)); |
| 118 |
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6856 | if (flg) PetscCall(EPSSetProblemType(eps,EPS_LREP)); |
| 119 | |||
| 120 |
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6856 | PetscCall(PetscOptionsBoolGroupBegin("-eps_ritz","Rayleigh-Ritz extraction","EPSSetExtraction",&flg)); |
| 121 |
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6856 | if (flg) PetscCall(EPSSetExtraction(eps,EPS_RITZ)); |
| 122 |
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6856 | PetscCall(PetscOptionsBoolGroup("-eps_harmonic","Harmonic Ritz extraction","EPSSetExtraction",&flg)); |
| 123 |
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6856 | if (flg) PetscCall(EPSSetExtraction(eps,EPS_HARMONIC)); |
| 124 |
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6856 | PetscCall(PetscOptionsBoolGroup("-eps_harmonic_relative","Relative harmonic Ritz extraction","EPSSetExtraction",&flg)); |
| 125 |
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6856 | if (flg) PetscCall(EPSSetExtraction(eps,EPS_HARMONIC_RELATIVE)); |
| 126 |
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6856 | PetscCall(PetscOptionsBoolGroup("-eps_harmonic_right","Right harmonic Ritz extraction","EPSSetExtraction",&flg)); |
| 127 |
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6856 | if (flg) PetscCall(EPSSetExtraction(eps,EPS_HARMONIC_RIGHT)); |
| 128 |
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6856 | PetscCall(PetscOptionsBoolGroup("-eps_harmonic_largest","Largest harmonic Ritz extraction","EPSSetExtraction",&flg)); |
| 129 |
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6856 | if (flg) PetscCall(EPSSetExtraction(eps,EPS_HARMONIC_LARGEST)); |
| 130 |
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6856 | PetscCall(PetscOptionsBoolGroup("-eps_refined","Refined Ritz extraction","EPSSetExtraction",&flg)); |
| 131 |
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6856 | if (flg) PetscCall(EPSSetExtraction(eps,EPS_REFINED)); |
| 132 |
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6856 | PetscCall(PetscOptionsBoolGroupEnd("-eps_refined_harmonic","Refined harmonic Ritz extraction","EPSSetExtraction",&flg)); |
| 133 |
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6856 | if (flg) PetscCall(EPSSetExtraction(eps,EPS_REFINED_HARMONIC)); |
| 134 | |||
| 135 | 6856 | bal = eps->balance; | |
| 136 |
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6856 | PetscCall(PetscOptionsEnum("-eps_balance","Balancing method","EPSSetBalance",EPSBalanceTypes,(PetscEnum)bal,(PetscEnum*)&bal,&flg1)); |
| 137 | 6856 | j = eps->balance_its; | |
| 138 |
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6856 | PetscCall(PetscOptionsInt("-eps_balance_its","Number of iterations in balancing","EPSSetBalance",eps->balance_its,&j,&flg2)); |
| 139 | 6856 | r = eps->balance_cutoff; | |
| 140 |
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6856 | PetscCall(PetscOptionsReal("-eps_balance_cutoff","Cutoff value in balancing","EPSSetBalance",eps->balance_cutoff,&r,&flg3)); |
| 141 |
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6856 | if (flg1 || flg2 || flg3) PetscCall(EPSSetBalance(eps,bal,j,r)); |
| 142 | |||
| 143 | 6856 | i = eps->max_it; | |
| 144 |
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|
6856 | PetscCall(PetscOptionsInt("-eps_max_it","Maximum number of iterations","EPSSetTolerances",eps->max_it,&i,&flg1)); |
| 145 | 6856 | r = eps->tol; | |
| 146 |
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|
11702 | PetscCall(PetscOptionsReal("-eps_tol","Tolerance","EPSSetTolerances",SlepcDefaultTol(eps->tol),&r,&flg2)); |
| 147 |
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|
6856 | if (flg1 || flg2) PetscCall(EPSSetTolerances(eps,r,i)); |
| 148 | |||
| 149 | 6856 | r = eps->thres; | |
| 150 |
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|
6856 | PetscCall(PetscOptionsReal("-eps_threshold_absolute","Absolute threshold","EPSSetThreshold",r,&r,&flg)); |
| 151 |
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|
6856 | if (flg) PetscCall(EPSSetThreshold(eps,r,PETSC_FALSE)); |
| 152 |
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|
6856 | PetscCall(PetscOptionsReal("-eps_threshold_relative","Relative threshold","EPSSetThreshold",r,&r,&flg)); |
| 153 |
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|
6856 | if (flg) PetscCall(EPSSetThreshold(eps,r,PETSC_TRUE)); |
| 154 | |||
| 155 |
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|
6856 | PetscCall(PetscOptionsBoolGroupBegin("-eps_conv_rel","Relative error convergence test","EPSSetConvergenceTest",&flg)); |
| 156 |
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|
6856 | if (flg) PetscCall(EPSSetConvergenceTest(eps,EPS_CONV_REL)); |
| 157 |
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|
6856 | PetscCall(PetscOptionsBoolGroup("-eps_conv_norm","Convergence test relative to the eigenvalue and the matrix norms","EPSSetConvergenceTest",&flg)); |
| 158 |
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|
6856 | if (flg) PetscCall(EPSSetConvergenceTest(eps,EPS_CONV_NORM)); |
| 159 |
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|
6856 | PetscCall(PetscOptionsBoolGroup("-eps_conv_abs","Absolute error convergence test","EPSSetConvergenceTest",&flg)); |
| 160 |
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|
6856 | if (flg) PetscCall(EPSSetConvergenceTest(eps,EPS_CONV_ABS)); |
| 161 |
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|
6856 | PetscCall(PetscOptionsBoolGroupEnd("-eps_conv_user","User-defined convergence test","EPSSetConvergenceTest",&flg)); |
| 162 |
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|
6856 | if (flg) PetscCall(EPSSetConvergenceTest(eps,EPS_CONV_USER)); |
| 163 | |||
| 164 |
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|
6856 | PetscCall(PetscOptionsBoolGroupBegin("-eps_stop_basic","Stop iteration if all eigenvalues converged or max_it reached","EPSSetStoppingTest",&flg)); |
| 165 |
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|
6856 | if (flg) PetscCall(EPSSetStoppingTest(eps,EPS_STOP_BASIC)); |
| 166 |
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|
6856 | PetscCall(PetscOptionsBoolGroup("-eps_stop_threshold","Stop iteration if a converged eigenvalue is below/above the threshold","EPSSetStoppingTest",&flg)); |
| 167 |
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|
6856 | if (flg) PetscCall(EPSSetStoppingTest(eps,EPS_STOP_THRESHOLD)); |
| 168 |
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|
6856 | PetscCall(PetscOptionsBoolGroupEnd("-eps_stop_user","User-defined stopping test","EPSSetStoppingTest",&flg)); |
| 169 |
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|
6856 | if (flg) PetscCall(EPSSetStoppingTest(eps,EPS_STOP_USER)); |
| 170 | |||
| 171 | 6856 | i = eps->nev; | |
| 172 |
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|
6856 | PetscCall(PetscOptionsInt("-eps_nev","Number of eigenvalues to compute","EPSSetDimensions",eps->nev,&i,&flg1)); |
| 173 |
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6856 | if (!flg1) i = PETSC_CURRENT; |
| 174 | 6856 | j = eps->ncv; | |
| 175 |
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|
6856 | PetscCall(PetscOptionsInt("-eps_ncv","Number of basis vectors","EPSSetDimensions",eps->ncv,&j,&flg2)); |
| 176 | 6856 | k = eps->mpd; | |
| 177 |
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6856 | PetscCall(PetscOptionsInt("-eps_mpd","Maximum dimension of projected problem","EPSSetDimensions",eps->mpd,&k,&flg3)); |
| 178 |
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|
6856 | if (flg1 || flg2 || flg3) PetscCall(EPSSetDimensions(eps,i,j,k)); |
| 179 | |||
| 180 |
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|
6856 | PetscCall(PetscOptionsBoolGroupBegin("-eps_largest_magnitude","Compute largest eigenvalues in magnitude","EPSSetWhichEigenpairs",&flg)); |
| 181 |
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|
6856 | if (flg) PetscCall(EPSSetWhichEigenpairs(eps,EPS_LARGEST_MAGNITUDE)); |
| 182 |
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6856 | PetscCall(PetscOptionsBoolGroup("-eps_smallest_magnitude","Compute smallest eigenvalues in magnitude","EPSSetWhichEigenpairs",&flg)); |
| 183 |
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|
6856 | if (flg) PetscCall(EPSSetWhichEigenpairs(eps,EPS_SMALLEST_MAGNITUDE)); |
| 184 |
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6856 | PetscCall(PetscOptionsBoolGroup("-eps_largest_real","Compute eigenvalues with largest real parts","EPSSetWhichEigenpairs",&flg)); |
| 185 |
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|
6856 | if (flg) PetscCall(EPSSetWhichEigenpairs(eps,EPS_LARGEST_REAL)); |
| 186 |
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6856 | PetscCall(PetscOptionsBoolGroup("-eps_smallest_real","Compute eigenvalues with smallest real parts","EPSSetWhichEigenpairs",&flg)); |
| 187 |
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6856 | if (flg) PetscCall(EPSSetWhichEigenpairs(eps,EPS_SMALLEST_REAL)); |
| 188 |
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6856 | PetscCall(PetscOptionsBoolGroup("-eps_largest_imaginary","Compute eigenvalues with largest imaginary parts","EPSSetWhichEigenpairs",&flg)); |
| 189 |
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|
6856 | if (flg) PetscCall(EPSSetWhichEigenpairs(eps,EPS_LARGEST_IMAGINARY)); |
| 190 |
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6856 | PetscCall(PetscOptionsBoolGroup("-eps_smallest_imaginary","Compute eigenvalues with smallest imaginary parts","EPSSetWhichEigenpairs",&flg)); |
| 191 |
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|
6856 | if (flg) PetscCall(EPSSetWhichEigenpairs(eps,EPS_SMALLEST_IMAGINARY)); |
| 192 |
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6856 | PetscCall(PetscOptionsBoolGroup("-eps_target_magnitude","Compute eigenvalues closest to target","EPSSetWhichEigenpairs",&flg)); |
| 193 |
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|
6856 | if (flg) PetscCall(EPSSetWhichEigenpairs(eps,EPS_TARGET_MAGNITUDE)); |
| 194 |
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6856 | PetscCall(PetscOptionsBoolGroup("-eps_target_real","Compute eigenvalues with real parts closest to target","EPSSetWhichEigenpairs",&flg)); |
| 195 |
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6856 | if (flg) PetscCall(EPSSetWhichEigenpairs(eps,EPS_TARGET_REAL)); |
| 196 |
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6856 | PetscCall(PetscOptionsBoolGroup("-eps_target_imaginary","Compute eigenvalues with imaginary parts closest to target","EPSSetWhichEigenpairs",&flg)); |
| 197 |
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|
6856 | if (flg) PetscCall(EPSSetWhichEigenpairs(eps,EPS_TARGET_IMAGINARY)); |
| 198 |
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6856 | PetscCall(PetscOptionsBoolGroup("-eps_all","Compute all eigenvalues in an interval or a region","EPSSetWhichEigenpairs",&flg)); |
| 199 |
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|
6856 | if (flg) PetscCall(EPSSetWhichEigenpairs(eps,EPS_ALL)); |
| 200 |
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6856 | PetscCall(PetscOptionsBoolGroupEnd("-eps_which_user","Select the user-defined selection criterion","EPSSetWhichEigenpairs",&flg)); |
| 201 |
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|
6856 | if (flg) PetscCall(EPSSetWhichEigenpairs(eps,EPS_WHICH_USER)); |
| 202 | |||
| 203 |
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6856 | PetscCall(PetscOptionsScalar("-eps_target","Value of the target","EPSSetTarget",eps->target,&s,&flg)); |
| 204 |
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6856 | if (flg) { |
| 205 |
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|
440 | if (eps->which!=EPS_TARGET_REAL && eps->which!=EPS_TARGET_IMAGINARY) PetscCall(EPSSetWhichEigenpairs(eps,EPS_TARGET_MAGNITUDE)); |
| 206 |
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|
440 | PetscCall(EPSSetTarget(eps,s)); |
| 207 | } | ||
| 208 | |||
| 209 | 6856 | k = 2; | |
| 210 |
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|
6856 | PetscCall(PetscOptionsRealArray("-eps_interval","Computational interval (two real values separated with a comma without spaces)","EPSSetInterval",array,&k,&flg)); |
| 211 |
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6856 | if (flg) { |
| 212 |
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195 | PetscCheck(k>1,PetscObjectComm((PetscObject)eps),PETSC_ERR_ARG_SIZ,"Must pass two values in -eps_interval (comma-separated without spaces)"); |
| 213 |
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195 | PetscCall(EPSSetWhichEigenpairs(eps,EPS_ALL)); |
| 214 |
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195 | PetscCall(EPSSetInterval(eps,array[0],array[1])); |
| 215 | } | ||
| 216 | |||
| 217 |
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|
6856 | PetscCall(PetscOptionsBool("-eps_true_residual","Compute true residuals explicitly","EPSSetTrueResidual",eps->trueres,&eps->trueres,NULL)); |
| 218 |
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|
6856 | PetscCall(PetscOptionsBool("-eps_purify","Postprocess eigenvectors for purification","EPSSetPurify",eps->purify,&bval,&flg)); |
| 219 |
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|
6856 | if (flg) PetscCall(EPSSetPurify(eps,bval)); |
| 220 |
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|
6856 | PetscCall(PetscOptionsBool("-eps_two_sided","Use two-sided variant (to compute left eigenvectors)","EPSSetTwoSided",eps->twosided,&bval,&flg)); |
| 221 |
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|
6856 | if (flg) PetscCall(EPSSetTwoSided(eps,bval)); |
| 222 | |||
| 223 | /* -----------------------------------------------------------------------*/ | ||
| 224 | /* | ||
| 225 | Cancels all monitors hardwired into code before call to EPSSetFromOptions() | ||
| 226 | */ | ||
| 227 |
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6856 | PetscCall(PetscOptionsBool("-eps_monitor_cancel","Remove any hardwired monitor routines","EPSMonitorCancel",PETSC_FALSE,&flg,&set)); |
| 228 |
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|
6856 | if (set && flg) PetscCall(EPSMonitorCancel(eps)); |
| 229 |
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6856 | PetscCall(EPSMonitorSetFromOptions(eps,"-eps_monitor","first_approximation",NULL,PETSC_FALSE)); |
| 230 |
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6856 | PetscCall(EPSMonitorSetFromOptions(eps,"-eps_monitor_all","all_approximations",NULL,PETSC_TRUE)); |
| 231 |
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|
6856 | PetscCall(EPSMonitorSetFromOptions(eps,"-eps_monitor_conv","convergence_history",NULL,PETSC_FALSE)); |
| 232 | |||
| 233 | /* -----------------------------------------------------------------------*/ | ||
| 234 |
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|
6856 | PetscCall(PetscOptionsName("-eps_view","Print detailed information on solver used","EPSView",&set)); |
| 235 |
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|
6856 | PetscCall(PetscOptionsName("-eps_view_vectors","View computed eigenvectors","EPSVectorsView",&set)); |
| 236 |
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6856 | PetscCall(PetscOptionsName("-eps_view_values","View computed eigenvalues","EPSValuesView",&set)); |
| 237 |
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6856 | PetscCall(PetscOptionsName("-eps_converged_reason","Print reason for convergence, and number of iterations","EPSConvergedReasonView",&set)); |
| 238 |
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6856 | PetscCall(PetscOptionsName("-eps_error_absolute","Print absolute errors of each eigenpair","EPSErrorView",&set)); |
| 239 |
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6856 | PetscCall(PetscOptionsName("-eps_error_relative","Print relative errors of each eigenpair","EPSErrorView",&set)); |
| 240 |
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6856 | PetscCall(PetscOptionsName("-eps_error_backward","Print backward errors of each eigenpair","EPSErrorView",&set)); |
| 241 | |||
| 242 |
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6856 | PetscTryTypeMethod(eps,setfromoptions,PetscOptionsObject); |
| 243 |
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6856 | PetscCall(PetscObjectProcessOptionsHandlers((PetscObject)eps,PetscOptionsObject)); |
| 244 |
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6856 | PetscOptionsEnd(); |
| 245 | |||
| 246 |
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6856 | if (!eps->V) PetscCall(EPSGetBV(eps,&eps->V)); |
| 247 |
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6856 | PetscCall(BVSetFromOptions(eps->V)); |
| 248 |
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6856 | if (!eps->rg) PetscCall(EPSGetRG(eps,&eps->rg)); |
| 249 |
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6856 | PetscCall(RGSetFromOptions(eps->rg)); |
| 250 |
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6856 | if (eps->useds) { |
| 251 |
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6356 | if (!eps->ds) PetscCall(EPSGetDS(eps,&eps->ds)); |
| 252 |
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6356 | PetscCall(EPSSetDSType(eps)); |
| 253 |
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6356 | PetscCall(DSSetFromOptions(eps->ds)); |
| 254 | } | ||
| 255 |
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6856 | if (!eps->st) PetscCall(EPSGetST(eps,&eps->st)); |
| 256 |
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6856 | PetscCall(EPSSetDefaultST(eps)); |
| 257 |
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6856 | PetscCall(STSetFromOptions(eps->st)); |
| 258 |
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1331 | PetscFunctionReturn(PETSC_SUCCESS); |
| 259 | } | ||
| 260 | |||
| 261 | /*@ | ||
| 262 | EPSGetTolerances - Gets the tolerance and maximum iteration count used | ||
| 263 | by the `EPS` convergence tests. | ||
| 264 | |||
| 265 | Not Collective | ||
| 266 | |||
| 267 | Input Parameter: | ||
| 268 | . eps - the linear eigensolver context | ||
| 269 | |||
| 270 | Output Parameters: | ||
| 271 | + tol - the convergence tolerance | ||
| 272 | - maxits - maximum number of iterations | ||
| 273 | |||
| 274 | Notes: | ||
| 275 | The user can specify `NULL` for any parameter that is not needed. | ||
| 276 | |||
| 277 | Level: intermediate | ||
| 278 | |||
| 279 | .seealso: [](ch:eps), `EPSSetTolerances()` | ||
| 280 | @*/ | ||
| 281 | 2830 | PetscErrorCode EPSGetTolerances(EPS eps,PetscReal *tol,PetscInt *maxits) | |
| 282 | { | ||
| 283 |
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2830 | PetscFunctionBegin; |
| 284 |
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2830 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 285 |
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2830 | if (tol) *tol = eps->tol; |
| 286 |
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2830 | if (maxits) *maxits = eps->max_it; |
| 287 |
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2830 | PetscFunctionReturn(PETSC_SUCCESS); |
| 288 | } | ||
| 289 | |||
| 290 | /*@ | ||
| 291 | EPSSetTolerances - Sets the tolerance and maximum iteration count used | ||
| 292 | by the `EPS` convergence tests. | ||
| 293 | |||
| 294 | Logically Collective | ||
| 295 | |||
| 296 | Input Parameters: | ||
| 297 | + eps - the linear eigensolver context | ||
| 298 | . tol - the convergence tolerance | ||
| 299 | - maxits - maximum number of iterations to use | ||
| 300 | |||
| 301 | Options Database Keys: | ||
| 302 | + -eps_tol tol - sets the convergence tolerance | ||
| 303 | - -eps_max_it maxits - sets the maximum number of iterations allowed | ||
| 304 | |||
| 305 | Note: | ||
| 306 | Use `PETSC_CURRENT` to retain the current value of any of the parameters. | ||
| 307 | Use `PETSC_DETERMINE` for either argument to assign a default value computed | ||
| 308 | internally (may be different in each solver). | ||
| 309 | For `maxits` use `PETSC_UNLIMITED` to indicate there is no upper bound on this value. | ||
| 310 | |||
| 311 | Level: intermediate | ||
| 312 | |||
| 313 | .seealso: [](ch:eps), `EPSGetTolerances()` | ||
| 314 | @*/ | ||
| 315 | 5610 | PetscErrorCode EPSSetTolerances(EPS eps,PetscReal tol,PetscInt maxits) | |
| 316 | { | ||
| 317 |
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5610 | PetscFunctionBegin; |
| 318 |
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5610 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 319 |
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5610 | PetscValidLogicalCollectiveReal(eps,tol,2); |
| 320 |
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5610 | PetscValidLogicalCollectiveInt(eps,maxits,3); |
| 321 |
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5610 | if (tol == (PetscReal)PETSC_DETERMINE) { |
| 322 | 143 | eps->tol = PETSC_DETERMINE; | |
| 323 | 143 | eps->state = EPS_STATE_INITIAL; | |
| 324 |
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5467 | } else if (tol != (PetscReal)PETSC_CURRENT) { |
| 325 |
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5467 | PetscCheck(tol>0.0,PetscObjectComm((PetscObject)eps),PETSC_ERR_ARG_OUTOFRANGE,"Illegal value of tol. Must be > 0"); |
| 326 | 5467 | eps->tol = tol; | |
| 327 | } | ||
| 328 |
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5610 | if (maxits == PETSC_DETERMINE) { |
| 329 | 1472 | eps->max_it = PETSC_DETERMINE; | |
| 330 | 1472 | eps->state = EPS_STATE_INITIAL; | |
| 331 |
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4138 | } else if (maxits == PETSC_UNLIMITED) { |
| 332 | ✗ | eps->max_it = PETSC_INT_MAX; | |
| 333 |
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4138 | } else if (maxits != PETSC_CURRENT) { |
| 334 |
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2144 | PetscCheck(maxits>0,PetscObjectComm((PetscObject)eps),PETSC_ERR_ARG_OUTOFRANGE,"Illegal value of maxits. Must be > 0"); |
| 335 | 2144 | eps->max_it = maxits; | |
| 336 | } | ||
| 337 |
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1111 | PetscFunctionReturn(PETSC_SUCCESS); |
| 338 | } | ||
| 339 | |||
| 340 | /*@ | ||
| 341 | EPSGetDimensions - Gets the number of eigenvalues to compute | ||
| 342 | and the dimension of the subspace. | ||
| 343 | |||
| 344 | Not Collective | ||
| 345 | |||
| 346 | Input Parameter: | ||
| 347 | . eps - the linear eigensolver context | ||
| 348 | |||
| 349 | Output Parameters: | ||
| 350 | + nev - number of eigenvalues to compute | ||
| 351 | . ncv - the maximum dimension of the subspace to be used by the solver | ||
| 352 | - mpd - the maximum dimension allowed for the projected problem | ||
| 353 | |||
| 354 | Level: intermediate | ||
| 355 | |||
| 356 | .seealso: [](ch:eps), `EPSSetDimensions()` | ||
| 357 | @*/ | ||
| 358 | 4498 | PetscErrorCode EPSGetDimensions(EPS eps,PetscInt *nev,PetscInt *ncv,PetscInt *mpd) | |
| 359 | { | ||
| 360 |
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4498 | PetscFunctionBegin; |
| 361 |
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4498 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 362 |
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6511 | if (nev) *nev = eps->nev? eps->nev: 1; |
| 363 |
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4498 | if (ncv) *ncv = eps->ncv; |
| 364 |
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4498 | if (mpd) *mpd = eps->mpd; |
| 365 |
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4498 | PetscFunctionReturn(PETSC_SUCCESS); |
| 366 | } | ||
| 367 | |||
| 368 | /*@ | ||
| 369 | EPSSetDimensions - Sets the number of eigenvalues to compute | ||
| 370 | and the dimension of the subspace. | ||
| 371 | |||
| 372 | Logically Collective | ||
| 373 | |||
| 374 | Input Parameters: | ||
| 375 | + eps - the linear eigensolver context | ||
| 376 | . nev - number of eigenvalues to compute | ||
| 377 | . ncv - the maximum dimension of the subspace to be used by the solver | ||
| 378 | - mpd - the maximum dimension allowed for the projected problem | ||
| 379 | |||
| 380 | Options Database Keys: | ||
| 381 | + -eps_nev nev - sets the number of eigenvalues | ||
| 382 | . -eps_ncv ncv - sets the dimension of the subspace | ||
| 383 | - -eps_mpd mpd - sets the maximum projected dimension | ||
| 384 | |||
| 385 | Notes: | ||
| 386 | Use `PETSC_DETERMINE` for `ncv` and `mpd` to assign a reasonably good value, which is | ||
| 387 | dependent on the solution method. For any of the arguments, use `PETSC_CURRENT` | ||
| 388 | to preserve the current value. | ||
| 389 | |||
| 390 | The parameters `ncv` and `mpd` are intimately related, so that the user is advised | ||
| 391 | to set one of them at most. Normal usage is\: | ||
| 392 | |||
| 393 | 1. In cases where `nev` is small, the user sets `ncv` (a reasonable default is `2*nev`). | ||
| 394 | 2. In cases where `nev` is large, the user sets `mpd`. | ||
| 395 | |||
| 396 | The value of `ncv` should always be between `nev` and `(nev+mpd)`, typically | ||
| 397 | `ncv=nev+mpd`. If `nev` is not too large, `mpd=nev` is a reasonable choice, otherwise | ||
| 398 | a smaller value should be used. | ||
| 399 | |||
| 400 | When computing all eigenvalues in an interval, see `EPSSetInterval()`, these | ||
| 401 | parameters lose relevance, and tuning must be done with | ||
| 402 | `EPSKrylovSchurSetDimensions()`. | ||
| 403 | |||
| 404 | Level: intermediate | ||
| 405 | |||
| 406 | .seealso: [](ch:eps), `EPSGetDimensions()`, `EPSSetInterval()`, `EPSKrylovSchurSetDimensions()` | ||
| 407 | @*/ | ||
| 408 | 6508 | PetscErrorCode EPSSetDimensions(EPS eps,PetscInt nev,PetscInt ncv,PetscInt mpd) | |
| 409 | { | ||
| 410 |
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6508 | PetscFunctionBegin; |
| 411 |
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6508 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 412 |
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6508 | PetscValidLogicalCollectiveInt(eps,nev,2); |
| 413 |
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6508 | PetscValidLogicalCollectiveInt(eps,ncv,3); |
| 414 |
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6508 | PetscValidLogicalCollectiveInt(eps,mpd,4); |
| 415 |
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6508 | if (nev != PETSC_CURRENT) { |
| 416 |
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6196 | PetscCheck(nev>0,PetscObjectComm((PetscObject)eps),PETSC_ERR_ARG_OUTOFRANGE,"Illegal value of nev. Must be > 0"); |
| 417 | 6196 | eps->nev = nev; | |
| 418 | } | ||
| 419 |
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6508 | if (ncv == PETSC_DETERMINE) { |
| 420 | 3804 | eps->ncv = PETSC_DETERMINE; | |
| 421 |
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2704 | } else if (ncv != PETSC_CURRENT) { |
| 422 |
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2667 | PetscCheck(ncv>0,PetscObjectComm((PetscObject)eps),PETSC_ERR_ARG_OUTOFRANGE,"Illegal value of ncv. Must be > 0"); |
| 423 | 2667 | eps->ncv = ncv; | |
| 424 | } | ||
| 425 |
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6508 | if (mpd == PETSC_DETERMINE) { |
| 426 | 5922 | eps->mpd = PETSC_DETERMINE; | |
| 427 |
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586 | } else if (mpd != PETSC_CURRENT) { |
| 428 |
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543 | PetscCheck(mpd>0,PetscObjectComm((PetscObject)eps),PETSC_ERR_ARG_OUTOFRANGE,"Illegal value of mpd. Must be > 0"); |
| 429 | 543 | eps->mpd = mpd; | |
| 430 | } | ||
| 431 | 6508 | eps->state = EPS_STATE_INITIAL; | |
| 432 |
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6508 | PetscFunctionReturn(PETSC_SUCCESS); |
| 433 | } | ||
| 434 | |||
| 435 | /*@ | ||
| 436 | EPSSetWhichEigenpairs - Specifies which portion of the spectrum is | ||
| 437 | to be sought. | ||
| 438 | |||
| 439 | Logically Collective | ||
| 440 | |||
| 441 | Input Parameters: | ||
| 442 | + eps - the linear eigensolver context | ||
| 443 | - which - the portion of the spectrum to be sought, see `EPSWhich` for possible values | ||
| 444 | |||
| 445 | Options Database Keys: | ||
| 446 | + -eps_largest_magnitude - sets largest eigenvalues in magnitude | ||
| 447 | . -eps_smallest_magnitude - sets smallest eigenvalues in magnitude | ||
| 448 | . -eps_largest_real - sets largest real parts | ||
| 449 | . -eps_smallest_real - sets smallest real parts | ||
| 450 | . -eps_largest_imaginary - sets largest imaginary parts | ||
| 451 | . -eps_smallest_imaginary - sets smallest imaginary parts | ||
| 452 | . -eps_target_magnitude - sets eigenvalues closest to target | ||
| 453 | . -eps_target_real - sets real parts closest to target | ||
| 454 | . -eps_target_imaginary - sets imaginary parts closest to target | ||
| 455 | . -eps_all - sets all eigenvalues in an interval or region | ||
| 456 | - -eps_which_user - select the user-defined selection criterion | ||
| 457 | |||
| 458 | Notes: | ||
| 459 | Not all eigensolvers implemented in `EPS` account for all the possible values | ||
| 460 | of `which`. Also, some values make sense only for certain types of | ||
| 461 | problems. If SLEPc is compiled for real numbers `EPS_LARGEST_IMAGINARY` | ||
| 462 | and `EPS_SMALLEST_IMAGINARY` use the absolute value of the imaginary part | ||
| 463 | for eigenvalue selection. | ||
| 464 | |||
| 465 | The target is a scalar value provided with `EPSSetTarget()`. | ||
| 466 | |||
| 467 | The criterion `EPS_TARGET_IMAGINARY` is available only in case PETSc and | ||
| 468 | SLEPc have been built with complex scalars. | ||
| 469 | |||
| 470 | `EPS_ALL` is intended for use in combination with an interval (see | ||
| 471 | `EPSSetInterval()`), when all eigenvalues within the interval are requested, | ||
| 472 | or in the context of the `EPSCISS` solver for computing all eigenvalues in a region. | ||
| 473 | |||
| 474 | Level: intermediate | ||
| 475 | |||
| 476 | .seealso: [](ch:eps), `EPSGetWhichEigenpairs()`, `EPSSetTarget()`, `EPSSetInterval()`, `EPSSetDimensions()`, `EPSSetEigenvalueComparison()`, `EPSWhich` | ||
| 477 | @*/ | ||
| 478 | 6652 | PetscErrorCode EPSSetWhichEigenpairs(EPS eps,EPSWhich which) | |
| 479 | { | ||
| 480 |
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6652 | PetscFunctionBegin; |
| 481 |
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6652 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 482 |
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6652 | PetscValidLogicalCollectiveEnum(eps,which,2); |
| 483 |
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6652 | switch (which) { |
| 484 | 6652 | case EPS_LARGEST_MAGNITUDE: | |
| 485 | case EPS_SMALLEST_MAGNITUDE: | ||
| 486 | case EPS_LARGEST_REAL: | ||
| 487 | case EPS_SMALLEST_REAL: | ||
| 488 | case EPS_LARGEST_IMAGINARY: | ||
| 489 | case EPS_SMALLEST_IMAGINARY: | ||
| 490 | case EPS_TARGET_MAGNITUDE: | ||
| 491 | case EPS_TARGET_REAL: | ||
| 492 | #if defined(PETSC_USE_COMPLEX) | ||
| 493 | case EPS_TARGET_IMAGINARY: | ||
| 494 | #endif | ||
| 495 | case EPS_ALL: | ||
| 496 | case EPS_WHICH_USER: | ||
| 497 |
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6652 | if (eps->which != which) { |
| 498 | 5670 | eps->state = EPS_STATE_INITIAL; | |
| 499 | 5670 | eps->which = which; | |
| 500 | } | ||
| 501 | 1326 | break; | |
| 502 | #if !defined(PETSC_USE_COMPLEX) | ||
| 503 | ✗ | case EPS_TARGET_IMAGINARY: | |
| 504 | − | SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_SUP,"EPS_TARGET_IMAGINARY can be used only with complex scalars"); | |
| 505 | #endif | ||
| 506 | ✗ | default: | |
| 507 | − | SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_ARG_OUTOFRANGE,"Invalid 'which' value"); | |
| 508 | } | ||
| 509 |
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1326 | PetscFunctionReturn(PETSC_SUCCESS); |
| 510 | } | ||
| 511 | |||
| 512 | /*@ | ||
| 513 | EPSGetWhichEigenpairs - Returns which portion of the spectrum is to be | ||
| 514 | sought. | ||
| 515 | |||
| 516 | Not Collective | ||
| 517 | |||
| 518 | Input Parameter: | ||
| 519 | . eps - the linear eigensolver context | ||
| 520 | |||
| 521 | Output Parameter: | ||
| 522 | . which - the portion of the spectrum to be sought, see `EPSWhich` for possible values | ||
| 523 | |||
| 524 | Level: intermediate | ||
| 525 | |||
| 526 | .seealso: [](ch:eps), `EPSSetWhichEigenpairs()`, `EPSWhich` | ||
| 527 | @*/ | ||
| 528 | 16 | PetscErrorCode EPSGetWhichEigenpairs(EPS eps,EPSWhich *which) | |
| 529 | { | ||
| 530 |
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16 | PetscFunctionBegin; |
| 531 |
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16 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 532 |
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16 | PetscAssertPointer(which,2); |
| 533 | 16 | *which = eps->which; | |
| 534 |
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16 | PetscFunctionReturn(PETSC_SUCCESS); |
| 535 | } | ||
| 536 | |||
| 537 | /*@ | ||
| 538 | EPSSetThreshold - Sets the threshold used in the threshold stopping test. | ||
| 539 | |||
| 540 | Logically Collective | ||
| 541 | |||
| 542 | Input Parameters: | ||
| 543 | + eps - the linear eigensolver context | ||
| 544 | . thres - the threshold value | ||
| 545 | - rel - whether the threshold is relative or not | ||
| 546 | |||
| 547 | Options Database Keys: | ||
| 548 | + -eps_threshold_absolute thres - sets an absolute threshold | ||
| 549 | - -eps_threshold_relative thres - sets a relative threshold | ||
| 550 | |||
| 551 | Notes: | ||
| 552 | This function internally calls `EPSSetStoppingTest()` to set a special stopping | ||
| 553 | test based on the threshold, where eigenvalues are computed in sequence until | ||
| 554 | the next eigenvalue approximation is below the threshold `thres` (in magnitude). | ||
| 555 | This is the interpretation in case of searching for largest eigenvalues in magnitude, | ||
| 556 | see `EPSSetWhichEigenpairs()`. | ||
| 557 | |||
| 558 | If the solver is configured to compute smallest magnitude eigenvalues, then the | ||
| 559 | threshold must be interpreted in the opposite direction, i.e., the computation | ||
| 560 | will stop when the next eigenvalue approximation is above the threshold (in magnitude). | ||
| 561 | |||
| 562 | The threshold can also be used when computing largest/smallest real eigenvalues | ||
| 563 | (i.e, rightmost or leftmost), in which case the threshold is allowed to be | ||
| 564 | negative. The solver will stop when the next eigenvalue approximation is above | ||
| 565 | or below the threshold (considering the real part of the eigenvalue). This mode | ||
| 566 | is allowed only in problem types whose eigenvalues are always real (e.g., `EPS_HEP`). | ||
| 567 | |||
| 568 | In the case of largest magnitude eigenvalues, the threshold can be made relative | ||
| 569 | with respect to the dominant eigenvalue. Otherwise, the argument `rel` should be | ||
| 570 | `PETSC_FALSE`. | ||
| 571 | |||
| 572 | An additional use case is with target magnitude selection of eigenvalues (e.g., | ||
| 573 | with shift-and-invert), but this must be used with caution to avoid unexpected | ||
| 574 | behavior. With an absolute threshold, the solver will assume that leftmost | ||
| 575 | eigenvalues are being computed (e.g., with `target`=0 for a problem with real | ||
| 576 | positive eigenvalues). In case of a relative threshold, a value of `thres`<1 | ||
| 577 | implies that the wanted eigenvalues are the largest ones, and otherwise the | ||
| 578 | solver assumes that smallest eigenvalues are being computed. | ||
| 579 | |||
| 580 | When the next eigenvalue approximation does not satisfy the threshold criterion, | ||
| 581 | the solver will carry out an additional iteration/restart. This provides more | ||
| 582 | guarantees that eigenvalue multiplicity is resolved correctly. As a result, | ||
| 583 | sometimes the solver will return more converged eigenvalues than strictly | ||
| 584 | satisfying the criterion. | ||
| 585 | |||
| 586 | Since the number of computed eigenvalues is not known a priori, the solver | ||
| 587 | will need to reallocate the basis of vectors internally, to have enough room | ||
| 588 | to accommodate all the eigenvectors. Hence, this option must be used with | ||
| 589 | caution to avoid out-of-memory problems. The recommendation is to set the value | ||
| 590 | of `ncv` to be larger than the estimated number of eigenvalues, to minimize the | ||
| 591 | number of reallocations. | ||
| 592 | |||
| 593 | If a number of wanted eigenvalues has been set with `EPSSetDimensions()` | ||
| 594 | it is also taken into account and the solver will stop when one of the two | ||
| 595 | conditions (threshold or number of converged values) is met. | ||
| 596 | |||
| 597 | Use `EPSSetStoppingTest()` to return to the usual computation of a fixed number | ||
| 598 | of eigenvalues. | ||
| 599 | |||
| 600 | Level: advanced | ||
| 601 | |||
| 602 | .seealso: [](ch:eps), `EPSGetThreshold()`, `EPSSetStoppingTest()`, `EPSSetDimensions()`, `EPSSetWhichEigenpairs()`, `EPSSetProblemType()` | ||
| 603 | @*/ | ||
| 604 | 171 | PetscErrorCode EPSSetThreshold(EPS eps,PetscReal thres,PetscBool rel) | |
| 605 | { | ||
| 606 |
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171 | PetscFunctionBegin; |
| 607 |
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171 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 608 |
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171 | PetscValidLogicalCollectiveReal(eps,thres,2); |
| 609 |
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171 | PetscValidLogicalCollectiveBool(eps,rel,3); |
| 610 |
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171 | if (eps->thres != thres || eps->threlative != rel) { |
| 611 | 171 | eps->thres = thres; | |
| 612 | 171 | eps->threlative = rel; | |
| 613 | 171 | eps->state = EPS_STATE_INITIAL; | |
| 614 |
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171 | PetscCall(EPSSetStoppingTest(eps,EPS_STOP_THRESHOLD)); |
| 615 | } | ||
| 616 |
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39 | PetscFunctionReturn(PETSC_SUCCESS); |
| 617 | } | ||
| 618 | |||
| 619 | /*@ | ||
| 620 | EPSGetThreshold - Gets the threshold used by the threshold stopping test. | ||
| 621 | |||
| 622 | Not Collective | ||
| 623 | |||
| 624 | Input Parameter: | ||
| 625 | . eps - the linear eigensolver context | ||
| 626 | |||
| 627 | Output Parameters: | ||
| 628 | + thres - the threshold | ||
| 629 | - rel - whether the threshold is relative or not | ||
| 630 | |||
| 631 | Level: advanced | ||
| 632 | |||
| 633 | .seealso: [](ch:eps), `EPSSetThreshold()` | ||
| 634 | @*/ | ||
| 635 | 111 | PetscErrorCode EPSGetThreshold(EPS eps,PetscReal *thres,PetscBool *rel) | |
| 636 | { | ||
| 637 |
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111 | PetscFunctionBegin; |
| 638 |
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111 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 639 |
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111 | if (thres) *thres = eps->thres; |
| 640 |
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111 | if (rel) *rel = eps->threlative; |
| 641 |
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111 | PetscFunctionReturn(PETSC_SUCCESS); |
| 642 | } | ||
| 643 | |||
| 644 | /*@C | ||
| 645 | EPSSetEigenvalueComparison - Specifies the eigenvalue comparison function | ||
| 646 | when `EPSSetWhichEigenpairs()` is set to `EPS_WHICH_USER`. | ||
| 647 | |||
| 648 | Logically Collective | ||
| 649 | |||
| 650 | Input Parameters: | ||
| 651 | + eps - the linear eigensolver context | ||
| 652 | . func - the comparison function, see `SlepcEigenvalueComparisonFn` for the calling sequence | ||
| 653 | - ctx - a context pointer (the last parameter to the comparison function) | ||
| 654 | |||
| 655 | Level: advanced | ||
| 656 | |||
| 657 | .seealso: [](ch:eps), `EPSSetWhichEigenpairs()`, `EPSWhich` | ||
| 658 | @*/ | ||
| 659 | 384 | PetscErrorCode EPSSetEigenvalueComparison(EPS eps,SlepcEigenvalueComparisonFn *func,PetscCtx ctx) | |
| 660 | { | ||
| 661 |
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384 | PetscFunctionBegin; |
| 662 |
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384 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 663 | 384 | eps->sc->comparison = func; | |
| 664 | 384 | eps->sc->comparisonctx = ctx; | |
| 665 | 384 | eps->which = EPS_WHICH_USER; | |
| 666 |
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384 | PetscFunctionReturn(PETSC_SUCCESS); |
| 667 | } | ||
| 668 | |||
| 669 | /*@C | ||
| 670 | EPSSetArbitrarySelection - Specifies a function intended to look for | ||
| 671 | eigenvalues according to an arbitrary selection criterion. This criterion | ||
| 672 | can be based on a computation involving the current eigenvector approximation. | ||
| 673 | |||
| 674 | Logically Collective | ||
| 675 | |||
| 676 | Input Parameters: | ||
| 677 | + eps - the linear eigensolver context | ||
| 678 | . func - the arbitrary selection function, see `SlepcArbitrarySelectionFn` for a calling sequence | ||
| 679 | - ctx - a context pointer (the last parameter to the arbitrary selection function) | ||
| 680 | |||
| 681 | Notes: | ||
| 682 | This provides a mechanism to select eigenpairs by evaluating a user-defined | ||
| 683 | function. When a function has been provided, the default selection based on | ||
| 684 | sorting the eigenvalues is replaced by the sorting of the results of this | ||
| 685 | function (with the same sorting criterion given in `EPSSetWhichEigenpairs()`). | ||
| 686 | |||
| 687 | For instance, suppose you want to compute those eigenvectors that maximize | ||
| 688 | a certain computable expression. Then implement the computation using | ||
| 689 | the arguments `xr` and `xi`, and return the result in `rr`. Then set the standard | ||
| 690 | sorting by magnitude so that the eigenpair with largest value of `rr` is | ||
| 691 | selected. | ||
| 692 | |||
| 693 | This evaluation function is collective, that is, all processes call it and | ||
| 694 | it can use collective operations; furthermore, the computed result must | ||
| 695 | be the same in all processes. | ||
| 696 | |||
| 697 | The result of `func` is expressed as a complex number so that it is possible to | ||
| 698 | use the standard eigenvalue sorting functions, but normally only `rr` is used. | ||
| 699 | Set `ri` to zero unless it is meaningful in your application. | ||
| 700 | |||
| 701 | Level: advanced | ||
| 702 | |||
| 703 | .seealso: [](ch:eps), `EPSSetWhichEigenpairs()`, `EPSSetArbitrarySelectionContextDestroy()` | ||
| 704 | @*/ | ||
| 705 | 82 | PetscErrorCode EPSSetArbitrarySelection(EPS eps,SlepcArbitrarySelectionFn *func,PetscCtx ctx) | |
| 706 | { | ||
| 707 |
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82 | PetscFunctionBegin; |
| 708 |
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82 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 709 |
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82 | if (eps->arbitrarydestroy) PetscCall((*eps->arbitrarydestroy)(&eps->arbitraryctx)); |
| 710 | 82 | eps->arbitrary = func; | |
| 711 | 82 | eps->arbitraryctx = ctx; | |
| 712 | 82 | eps->state = EPS_STATE_INITIAL; | |
| 713 |
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82 | PetscFunctionReturn(PETSC_SUCCESS); |
| 714 | } | ||
| 715 | |||
| 716 | /*@C | ||
| 717 | EPSSetArbitrarySelectionContextDestroy - Set a context destroy function for the | ||
| 718 | context used in the arbitrary selection. | ||
| 719 | |||
| 720 | Logically Collective | ||
| 721 | |||
| 722 | Input Parameters: | ||
| 723 | + eps - the linear eigensolver context | ||
| 724 | - destroy - context destroy function, see `PetscCtxDestroyFn` for its calling sequence | ||
| 725 | |||
| 726 | Level: advanced | ||
| 727 | |||
| 728 | .seealso: [](ch:eps), `EPSSetArbitrarySelection()` | ||
| 729 | @*/ | ||
| 730 | 80 | PetscErrorCode EPSSetArbitrarySelectionContextDestroy(EPS eps,PetscCtxDestroyFn *destroy) | |
| 731 | { | ||
| 732 |
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80 | PetscFunctionBegin; |
| 733 |
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80 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 734 | 80 | eps->arbitrarydestroy = destroy; | |
| 735 |
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80 | PetscFunctionReturn(PETSC_SUCCESS); |
| 736 | } | ||
| 737 | |||
| 738 | /*@C | ||
| 739 | EPSSetConvergenceTestFunction - Sets a function to compute the error estimate | ||
| 740 | used in the convergence test. | ||
| 741 | |||
| 742 | Logically Collective | ||
| 743 | |||
| 744 | Input Parameters: | ||
| 745 | + eps - the linear eigensolver context | ||
| 746 | . func - convergence test function, see `EPSConvergenceTestFn` for the calling sequence | ||
| 747 | . ctx - context for private data for the convergence routine (may be `NULL`) | ||
| 748 | - destroy - a routine for destroying the context (may be `NULL`), see `PetscCtxDestroyFn` | ||
| 749 | for the calling sequence | ||
| 750 | |||
| 751 | Notes: | ||
| 752 | When this is called with a user-defined function, then the convergence | ||
| 753 | criterion is set to `EPS_CONV_USER`, see `EPSSetConvergenceTest()`. | ||
| 754 | |||
| 755 | If the error estimate returned by the convergence test function is less than | ||
| 756 | the tolerance, then the eigenvalue is accepted as converged. | ||
| 757 | |||
| 758 | Level: advanced | ||
| 759 | |||
| 760 | .seealso: [](ch:eps), `EPSSetConvergenceTest()`, `EPSSetTolerances()` | ||
| 761 | @*/ | ||
| 762 | 403 | PetscErrorCode EPSSetConvergenceTestFunction(EPS eps,EPSConvergenceTestFn *func,PetscCtx ctx,PetscCtxDestroyFn *destroy) | |
| 763 | { | ||
| 764 |
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403 | PetscFunctionBegin; |
| 765 |
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403 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 766 |
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403 | if (eps->convergeddestroy) PetscCall((*eps->convergeddestroy)(&eps->convergedctx)); |
| 767 | 403 | eps->convergeduser = func; | |
| 768 | 403 | eps->convergeddestroy = destroy; | |
| 769 | 403 | eps->convergedctx = ctx; | |
| 770 |
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403 | if (func == EPSConvergedRelative) eps->conv = EPS_CONV_REL; |
| 771 |
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403 | else if (func == EPSConvergedNorm) eps->conv = EPS_CONV_NORM; |
| 772 |
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403 | else if (func == EPSConvergedAbsolute) eps->conv = EPS_CONV_ABS; |
| 773 | else { | ||
| 774 | 403 | eps->conv = EPS_CONV_USER; | |
| 775 | 403 | eps->converged = eps->convergeduser; | |
| 776 | } | ||
| 777 |
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73 | PetscFunctionReturn(PETSC_SUCCESS); |
| 778 | } | ||
| 779 | |||
| 780 | /*@ | ||
| 781 | EPSSetConvergenceTest - Specifies how to compute the error estimate | ||
| 782 | used in the convergence test. | ||
| 783 | |||
| 784 | Logically Collective | ||
| 785 | |||
| 786 | Input Parameters: | ||
| 787 | + eps - the linear eigensolver context | ||
| 788 | - conv - the type of convergence test, see `EPSConv` for possible values | ||
| 789 | |||
| 790 | Options Database Keys: | ||
| 791 | + -eps_conv_abs - sets the absolute convergence test | ||
| 792 | . -eps_conv_rel - sets the convergence test relative to the eigenvalue | ||
| 793 | . -eps_conv_norm - sets the convergence test relative to the matrix norms | ||
| 794 | - -eps_conv_user - selects the user-defined convergence test | ||
| 795 | |||
| 796 | Level: intermediate | ||
| 797 | |||
| 798 | .seealso: [](ch:eps), `EPSGetConvergenceTest()`, `EPSSetConvergenceTestFunction()`, `EPSSetStoppingTest()`, `EPSConv` | ||
| 799 | @*/ | ||
| 800 | 1722 | PetscErrorCode EPSSetConvergenceTest(EPS eps,EPSConv conv) | |
| 801 | { | ||
| 802 |
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1722 | PetscFunctionBegin; |
| 803 |
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1722 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 804 |
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1722 | PetscValidLogicalCollectiveEnum(eps,conv,2); |
| 805 |
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1722 | switch (conv) { |
| 806 | 277 | case EPS_CONV_ABS: eps->converged = EPSConvergedAbsolute; break; | |
| 807 | 879 | case EPS_CONV_REL: eps->converged = EPSConvergedRelative; break; | |
| 808 | 566 | case EPS_CONV_NORM: eps->converged = EPSConvergedNorm; break; | |
| 809 | ✗ | case EPS_CONV_USER: | |
| 810 | ✗ | PetscCheck(eps->convergeduser,PetscObjectComm((PetscObject)eps),PETSC_ERR_ORDER,"Must call EPSSetConvergenceTestFunction() first"); | |
| 811 | ✗ | eps->converged = eps->convergeduser; | |
| 812 | ✗ | break; | |
| 813 | ✗ | default: | |
| 814 | − | SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_ARG_OUTOFRANGE,"Invalid 'conv' value"); | |
| 815 | } | ||
| 816 | 1722 | eps->conv = conv; | |
| 817 |
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1722 | PetscFunctionReturn(PETSC_SUCCESS); |
| 818 | } | ||
| 819 | |||
| 820 | /*@ | ||
| 821 | EPSGetConvergenceTest - Gets the method used to compute the error estimate | ||
| 822 | used in the convergence test. | ||
| 823 | |||
| 824 | Not Collective | ||
| 825 | |||
| 826 | Input Parameter: | ||
| 827 | . eps - the linear eigensolver context | ||
| 828 | |||
| 829 | Output Parameter: | ||
| 830 | . conv - the type of convergence test | ||
| 831 | |||
| 832 | Level: intermediate | ||
| 833 | |||
| 834 | .seealso: [](ch:eps), `EPSSetConvergenceTest()`, `EPSConv` | ||
| 835 | @*/ | ||
| 836 | 16 | PetscErrorCode EPSGetConvergenceTest(EPS eps,EPSConv *conv) | |
| 837 | { | ||
| 838 |
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16 | PetscFunctionBegin; |
| 839 |
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16 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 840 |
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16 | PetscAssertPointer(conv,2); |
| 841 | 16 | *conv = eps->conv; | |
| 842 |
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16 | PetscFunctionReturn(PETSC_SUCCESS); |
| 843 | } | ||
| 844 | |||
| 845 | /*@C | ||
| 846 | EPSSetStoppingTestFunction - Sets a function to decide when to stop the outer | ||
| 847 | iteration of the eigensolver. | ||
| 848 | |||
| 849 | Logically Collective | ||
| 850 | |||
| 851 | Input Parameters: | ||
| 852 | + eps - the linear eigensolver context | ||
| 853 | . func - stopping test function, see `EPSStoppingTestFn` for the calling sequence | ||
| 854 | . ctx - context for private data for the stopping routine (may be `NULL`) | ||
| 855 | - destroy - a routine for destroying the context (may be `NULL`), see `PetscCtxDestroyFn` | ||
| 856 | for the calling sequence | ||
| 857 | |||
| 858 | Note: | ||
| 859 | When implementing a function for this, normal usage is to first call the | ||
| 860 | default routine `EPSStoppingBasic()` and then set `reason` to `EPS_CONVERGED_USER` | ||
| 861 | if some user-defined conditions have been met. To let the eigensolver continue | ||
| 862 | iterating, the result must be left as `EPS_CONVERGED_ITERATING`. | ||
| 863 | |||
| 864 | Level: advanced | ||
| 865 | |||
| 866 | .seealso: [](ch:eps), `EPSSetStoppingTest()`, `EPSStoppingBasic()` | ||
| 867 | @*/ | ||
| 868 | 397 | PetscErrorCode EPSSetStoppingTestFunction(EPS eps,EPSStoppingTestFn *func,PetscCtx ctx,PetscCtxDestroyFn *destroy) | |
| 869 | { | ||
| 870 |
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397 | PetscFunctionBegin; |
| 871 |
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397 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 872 |
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|
397 | if (eps->stoppingdestroy) PetscCall((*eps->stoppingdestroy)(&eps->stoppingctx)); |
| 873 | 397 | eps->stoppinguser = func; | |
| 874 | 397 | eps->stoppingdestroy = destroy; | |
| 875 | 397 | eps->stoppingctx = ctx; | |
| 876 |
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397 | if (func == EPSStoppingBasic) PetscCall(EPSSetStoppingTest(eps,EPS_STOP_BASIC)); |
| 877 |
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|
397 | else if (func == EPSStoppingThreshold) PetscCall(EPSSetStoppingTest(eps,EPS_STOP_THRESHOLD)); |
| 878 | else { | ||
| 879 | 20 | eps->stop = EPS_STOP_USER; | |
| 880 | 20 | eps->stopping = eps->stoppinguser; | |
| 881 | } | ||
| 882 |
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|
81 | PetscFunctionReturn(PETSC_SUCCESS); |
| 883 | } | ||
| 884 | |||
| 885 | /*@ | ||
| 886 | EPSSetStoppingTest - Specifies how to decide the termination of the outer | ||
| 887 | loop of the eigensolver. | ||
| 888 | |||
| 889 | Logically Collective | ||
| 890 | |||
| 891 | Input Parameters: | ||
| 892 | + eps - the linear eigensolver context | ||
| 893 | - stop - the type of stopping test, see `EPSStop` | ||
| 894 | |||
| 895 | Options Database Keys: | ||
| 896 | + -eps_stop_basic - sets the default stopping test | ||
| 897 | . -eps_stop_threshold - sets the threshold stopping test | ||
| 898 | - -eps_stop_user - selects the user-defined stopping test | ||
| 899 | |||
| 900 | Level: advanced | ||
| 901 | |||
| 902 | .seealso: [](ch:eps), `EPSGetStoppingTest()`, `EPSSetStoppingTestFunction()`, `EPSSetConvergenceTest()`, `EPSStop` | ||
| 903 | @*/ | ||
| 904 | 770 | PetscErrorCode EPSSetStoppingTest(EPS eps,EPSStop stop) | |
| 905 | { | ||
| 906 |
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770 | PetscFunctionBegin; |
| 907 |
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770 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 908 |
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770 | PetscValidLogicalCollectiveEnum(eps,stop,2); |
| 909 |
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770 | switch (stop) { |
| 910 | 16 | case EPS_STOP_BASIC: eps->stopping = EPSStoppingBasic; break; | |
| 911 | 754 | case EPS_STOP_THRESHOLD: eps->stopping = EPSStoppingThreshold; break; | |
| 912 | ✗ | case EPS_STOP_USER: | |
| 913 | ✗ | PetscCheck(eps->stoppinguser,PetscObjectComm((PetscObject)eps),PETSC_ERR_ORDER,"Must call EPSSetStoppingTestFunction() first"); | |
| 914 | ✗ | eps->stopping = eps->stoppinguser; | |
| 915 | ✗ | break; | |
| 916 | ✗ | default: | |
| 917 | − | SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_ARG_OUTOFRANGE,"Invalid 'stop' value"); | |
| 918 | } | ||
| 919 | 770 | eps->stop = stop; | |
| 920 |
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|
770 | PetscFunctionReturn(PETSC_SUCCESS); |
| 921 | } | ||
| 922 | |||
| 923 | /*@ | ||
| 924 | EPSGetStoppingTest - Gets the method used to decide the termination of the outer | ||
| 925 | loop of the eigensolver. | ||
| 926 | |||
| 927 | Not Collective | ||
| 928 | |||
| 929 | Input Parameter: | ||
| 930 | . eps - the linear eigensolver context | ||
| 931 | |||
| 932 | Output Parameter: | ||
| 933 | . stop - the type of stopping test | ||
| 934 | |||
| 935 | Level: advanced | ||
| 936 | |||
| 937 | .seealso: [](ch:eps), `EPSSetStoppingTest()`, `EPSStop` | ||
| 938 | @*/ | ||
| 939 | 289 | PetscErrorCode EPSGetStoppingTest(EPS eps,EPSStop *stop) | |
| 940 | { | ||
| 941 |
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289 | PetscFunctionBegin; |
| 942 |
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289 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 943 |
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289 | PetscAssertPointer(stop,2); |
| 944 | 289 | *stop = eps->stop; | |
| 945 |
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289 | PetscFunctionReturn(PETSC_SUCCESS); |
| 946 | } | ||
| 947 | |||
| 948 | /*@ | ||
| 949 | EPSSetProblemType - Specifies the type of the eigenvalue problem. | ||
| 950 | |||
| 951 | Logically Collective | ||
| 952 | |||
| 953 | Input Parameters: | ||
| 954 | + eps - the linear eigensolver context | ||
| 955 | - type - a known type of eigenvalue problem | ||
| 956 | |||
| 957 | Options Database Keys: | ||
| 958 | + -eps_hermitian - Hermitian eigenvalue problem | ||
| 959 | . -eps_gen_hermitian - generalized Hermitian eigenvalue problem | ||
| 960 | . -eps_non_hermitian - non-Hermitian eigenvalue problem | ||
| 961 | . -eps_gen_non_hermitian - generalized non-Hermitian eigenvalue problem | ||
| 962 | . -eps_pos_gen_non_hermitian - generalized non-Hermitian eigenvalue problem | ||
| 963 | with positive semi-definite $B$ | ||
| 964 | . -eps_gen_indefinite - generalized Hermitian-indefinite eigenvalue problem | ||
| 965 | . -eps_bse - structured Bethe-Salpeter eigenvalue problem | ||
| 966 | . -eps_hamiltonian - structured Hamiltonian eigenvalue problem | ||
| 967 | - -eps_lrep - structured Linear Response eigenvalue problem | ||
| 968 | |||
| 969 | Notes: | ||
| 970 | This function must be used to instruct SLEPc to exploit symmetry or other | ||
| 971 | kind of structure. If no | ||
| 972 | problem type is specified, by default a non-Hermitian problem is assumed | ||
| 973 | (either standard or generalized). If the user knows that the problem is | ||
| 974 | Hermitian (i.e., $A=A^*$) or generalized Hermitian (i.e., $A=A^*$, $B=B^*$, | ||
| 975 | and $B$ positive definite) then it is recommended to set the problem type so | ||
| 976 | that the eigensolver can exploit these properties. | ||
| 977 | |||
| 978 | If the user does not call this function, the solver will use a reasonable | ||
| 979 | guess. | ||
| 980 | |||
| 981 | For structured problem types such as `EPS_BSE`, the matrices passed in via | ||
| 982 | `EPSSetOperators()` must have been created with the corresponding helper | ||
| 983 | function, i.e., `MatCreateBSE()`. | ||
| 984 | |||
| 985 | Level: intermediate | ||
| 986 | |||
| 987 | .seealso: [](ch:eps), `EPSSetOperators()`, `EPSSetType()`, `EPSGetProblemType()`, `EPSProblemType` | ||
| 988 | @*/ | ||
| 989 | 7955 | PetscErrorCode EPSSetProblemType(EPS eps,EPSProblemType type) | |
| 990 | { | ||
| 991 |
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7955 | PetscFunctionBegin; |
| 992 |
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7955 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 993 |
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|
7955 | PetscValidLogicalCollectiveEnum(eps,type,2); |
| 994 |
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7955 | if (type == eps->problem_type) PetscFunctionReturn(PETSC_SUCCESS); |
| 995 |
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|
7687 | switch (type) { |
| 996 | 2745 | case EPS_HEP: | |
| 997 | 2745 | eps->isgeneralized = PETSC_FALSE; | |
| 998 | 2745 | eps->ishermitian = PETSC_TRUE; | |
| 999 | 2745 | eps->ispositive = PETSC_FALSE; | |
| 1000 | 2745 | eps->isstructured = PETSC_FALSE; | |
| 1001 | 2745 | break; | |
| 1002 | 1746 | case EPS_NHEP: | |
| 1003 | 1746 | eps->isgeneralized = PETSC_FALSE; | |
| 1004 | 1746 | eps->ishermitian = PETSC_FALSE; | |
| 1005 | 1746 | eps->ispositive = PETSC_FALSE; | |
| 1006 | 1746 | eps->isstructured = PETSC_FALSE; | |
| 1007 | 1746 | break; | |
| 1008 | 1399 | case EPS_GHEP: | |
| 1009 | 1399 | eps->isgeneralized = PETSC_TRUE; | |
| 1010 | 1399 | eps->ishermitian = PETSC_TRUE; | |
| 1011 | 1399 | eps->ispositive = PETSC_TRUE; | |
| 1012 | 1399 | eps->isstructured = PETSC_FALSE; | |
| 1013 | 1399 | break; | |
| 1014 | 703 | case EPS_GNHEP: | |
| 1015 | 703 | eps->isgeneralized = PETSC_TRUE; | |
| 1016 | 703 | eps->ishermitian = PETSC_FALSE; | |
| 1017 | 703 | eps->ispositive = PETSC_FALSE; | |
| 1018 | 703 | eps->isstructured = PETSC_FALSE; | |
| 1019 | 703 | break; | |
| 1020 | 31 | case EPS_PGNHEP: | |
| 1021 | 31 | eps->isgeneralized = PETSC_TRUE; | |
| 1022 | 31 | eps->ishermitian = PETSC_FALSE; | |
| 1023 | 31 | eps->ispositive = PETSC_TRUE; | |
| 1024 | 31 | eps->isstructured = PETSC_FALSE; | |
| 1025 | 31 | break; | |
| 1026 | 155 | case EPS_GHIEP: | |
| 1027 | 155 | eps->isgeneralized = PETSC_TRUE; | |
| 1028 | 155 | eps->ishermitian = PETSC_TRUE; | |
| 1029 | 155 | eps->ispositive = PETSC_FALSE; | |
| 1030 | 155 | eps->isstructured = PETSC_FALSE; | |
| 1031 | 155 | break; | |
| 1032 | 505 | case EPS_BSE: | |
| 1033 | 505 | eps->isgeneralized = PETSC_FALSE; | |
| 1034 | 505 | eps->ishermitian = PETSC_FALSE; | |
| 1035 | 505 | eps->ispositive = PETSC_FALSE; | |
| 1036 | 505 | eps->isstructured = PETSC_TRUE; | |
| 1037 | 505 | break; | |
| 1038 | 95 | case EPS_HAMILT: | |
| 1039 | 95 | eps->isgeneralized = PETSC_FALSE; | |
| 1040 | 95 | eps->ishermitian = PETSC_FALSE; | |
| 1041 | 95 | eps->ispositive = PETSC_FALSE; | |
| 1042 | 95 | eps->isstructured = PETSC_TRUE; | |
| 1043 | 95 | break; | |
| 1044 | 308 | case EPS_LREP: | |
| 1045 | 308 | eps->isgeneralized = PETSC_FALSE; | |
| 1046 | 308 | eps->ishermitian = PETSC_FALSE; | |
| 1047 | 308 | eps->ispositive = PETSC_FALSE; | |
| 1048 | 308 | eps->isstructured = PETSC_TRUE; | |
| 1049 | 308 | break; | |
| 1050 | ✗ | default: | |
| 1051 | − | SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_ARG_WRONG,"Unknown eigenvalue problem type"); | |
| 1052 | } | ||
| 1053 | 7687 | eps->problem_type = type; | |
| 1054 | 7687 | eps->state = EPS_STATE_INITIAL; | |
| 1055 |
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7687 | PetscFunctionReturn(PETSC_SUCCESS); |
| 1056 | } | ||
| 1057 | |||
| 1058 | /*@ | ||
| 1059 | EPSGetProblemType - Gets the problem type from the `EPS` object. | ||
| 1060 | |||
| 1061 | Not Collective | ||
| 1062 | |||
| 1063 | Input Parameter: | ||
| 1064 | . eps - the linear eigensolver context | ||
| 1065 | |||
| 1066 | Output Parameter: | ||
| 1067 | . type - the problem type | ||
| 1068 | |||
| 1069 | Level: intermediate | ||
| 1070 | |||
| 1071 | .seealso: [](ch:eps), `EPSSetProblemType()`, `EPSProblemType` | ||
| 1072 | @*/ | ||
| 1073 | 790 | PetscErrorCode EPSGetProblemType(EPS eps,EPSProblemType *type) | |
| 1074 | { | ||
| 1075 |
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790 | PetscFunctionBegin; |
| 1076 |
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790 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 1077 |
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790 | PetscAssertPointer(type,2); |
| 1078 | 790 | *type = eps->problem_type; | |
| 1079 |
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790 | PetscFunctionReturn(PETSC_SUCCESS); |
| 1080 | } | ||
| 1081 | |||
| 1082 | /*@ | ||
| 1083 | EPSSetExtraction - Specifies the type of extraction technique to be employed | ||
| 1084 | by the eigensolver. | ||
| 1085 | |||
| 1086 | Logically Collective | ||
| 1087 | |||
| 1088 | Input Parameters: | ||
| 1089 | + eps - the linear eigensolver context | ||
| 1090 | - extr - a known type of extraction | ||
| 1091 | |||
| 1092 | Options Database Keys: | ||
| 1093 | + -eps_ritz - Rayleigh-Ritz extraction | ||
| 1094 | . -eps_harmonic - harmonic Ritz extraction | ||
| 1095 | . -eps_harmonic_relative - harmonic Ritz extraction relative to the eigenvalue | ||
| 1096 | . -eps_harmonic_right - harmonic Ritz extraction for rightmost eigenvalues | ||
| 1097 | . -eps_harmonic_largest - harmonic Ritz extraction for largest magnitude (without target) | ||
| 1098 | . -eps_refined - refined Ritz extraction | ||
| 1099 | - -eps_refined_harmonic - refined harmonic Ritz extraction | ||
| 1100 | |||
| 1101 | Notes: | ||
| 1102 | Not all eigensolvers support all types of extraction. | ||
| 1103 | |||
| 1104 | By default, a standard Rayleigh-Ritz extraction is used. Other extractions | ||
| 1105 | may be useful when computing interior eigenvalues. | ||
| 1106 | |||
| 1107 | Harmonic-type extractions are used in combination with a target, see `EPSSetTarget()`. | ||
| 1108 | |||
| 1109 | Level: advanced | ||
| 1110 | |||
| 1111 | .seealso: [](ch:eps), [](#sec:harmonic), `EPSSetTarget()`, `EPSGetExtraction()`, `EPSExtraction` | ||
| 1112 | @*/ | ||
| 1113 | 142 | PetscErrorCode EPSSetExtraction(EPS eps,EPSExtraction extr) | |
| 1114 | { | ||
| 1115 |
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142 | PetscFunctionBegin; |
| 1116 |
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142 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 1117 |
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|
142 | PetscValidLogicalCollectiveEnum(eps,extr,2); |
| 1118 |
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142 | if (eps->extraction != extr) { |
| 1119 | 142 | eps->state = EPS_STATE_INITIAL; | |
| 1120 | 142 | eps->extraction = extr; | |
| 1121 | } | ||
| 1122 |
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|
142 | PetscFunctionReturn(PETSC_SUCCESS); |
| 1123 | } | ||
| 1124 | |||
| 1125 | /*@ | ||
| 1126 | EPSGetExtraction - Gets the extraction type used by the `EPS` object. | ||
| 1127 | |||
| 1128 | Not Collective | ||
| 1129 | |||
| 1130 | Input Parameter: | ||
| 1131 | . eps - the linear eigensolver context | ||
| 1132 | |||
| 1133 | Output Parameter: | ||
| 1134 | . extr - name of extraction type | ||
| 1135 | |||
| 1136 | Level: advanced | ||
| 1137 | |||
| 1138 | .seealso: [](ch:eps), `EPSSetExtraction()`, `EPSExtraction` | ||
| 1139 | @*/ | ||
| 1140 | 32 | PetscErrorCode EPSGetExtraction(EPS eps,EPSExtraction *extr) | |
| 1141 | { | ||
| 1142 |
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32 | PetscFunctionBegin; |
| 1143 |
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|
32 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 1144 |
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|
32 | PetscAssertPointer(extr,2); |
| 1145 | 32 | *extr = eps->extraction; | |
| 1146 |
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|
32 | PetscFunctionReturn(PETSC_SUCCESS); |
| 1147 | } | ||
| 1148 | |||
| 1149 | /*@ | ||
| 1150 | EPSSetBalance - Specifies the balancing technique to be employed by the | ||
| 1151 | eigensolver, and some parameters associated to it. | ||
| 1152 | |||
| 1153 | Logically Collective | ||
| 1154 | |||
| 1155 | Input Parameters: | ||
| 1156 | + eps - the linear eigensolver context | ||
| 1157 | . bal - the balancing method, see `EPSBalance` for possible values | ||
| 1158 | . its - number of iterations of the balancing algorithm | ||
| 1159 | - cutoff - cutoff value | ||
| 1160 | |||
| 1161 | Options Database Keys: | ||
| 1162 | + -eps_balance (none|oneside|twoside|user) - the balancing method | ||
| 1163 | . -eps_balance_its its - number of iterations | ||
| 1164 | - -eps_balance_cutoff cutoff - cutoff value | ||
| 1165 | |||
| 1166 | Notes: | ||
| 1167 | When balancing is enabled, the solver works implicitly with matrix $DAD^{-1}$, | ||
| 1168 | where $D$ is an appropriate diagonal matrix. This improves the accuracy of | ||
| 1169 | the computed results in some cases, see [](sec:balancing). | ||
| 1170 | |||
| 1171 | Balancing makes sense only for non-Hermitian problems when the required | ||
| 1172 | precision is high (i.e., a small tolerance such as `1e-14`). | ||
| 1173 | |||
| 1174 | By default, balancing is disabled. The two-sided method is much more | ||
| 1175 | effective than the one-sided counterpart, but it requires the system | ||
| 1176 | matrices to have the `MatMultTranspose()` operation defined. The methods | ||
| 1177 | are described in {cite:p}`Che00`. | ||
| 1178 | |||
| 1179 | The parameter `its` is the number of iterations performed by the method. The | ||
| 1180 | `cutoff` value is used only in the two-side variant. Use `PETSC_DETERMINE` to assign | ||
| 1181 | a reasonably good value, or `PETSC_CURRENT` to leave the value unchanged. | ||
| 1182 | |||
| 1183 | User-defined balancing is allowed provided that the corresponding matrix | ||
| 1184 | is set via `STSetBalanceMatrix()`. | ||
| 1185 | |||
| 1186 | Level: intermediate | ||
| 1187 | |||
| 1188 | .seealso: [](ch:eps), [](sec:balancing), `EPSGetBalance()`, `EPSBalance`, `STSetBalanceMatrix()` | ||
| 1189 | @*/ | ||
| 1190 | 166 | PetscErrorCode EPSSetBalance(EPS eps,EPSBalance bal,PetscInt its,PetscReal cutoff) | |
| 1191 | { | ||
| 1192 |
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166 | PetscFunctionBegin; |
| 1193 |
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166 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 1194 |
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|
166 | PetscValidLogicalCollectiveEnum(eps,bal,2); |
| 1195 |
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|
166 | PetscValidLogicalCollectiveInt(eps,its,3); |
| 1196 |
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|
166 | PetscValidLogicalCollectiveReal(eps,cutoff,4); |
| 1197 |
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|
166 | switch (bal) { |
| 1198 | 166 | case EPS_BALANCE_NONE: | |
| 1199 | case EPS_BALANCE_ONESIDE: | ||
| 1200 | case EPS_BALANCE_TWOSIDE: | ||
| 1201 | case EPS_BALANCE_USER: | ||
| 1202 |
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|
166 | if (eps->balance != bal) { |
| 1203 | 146 | eps->state = EPS_STATE_INITIAL; | |
| 1204 | 146 | eps->balance = bal; | |
| 1205 | } | ||
| 1206 | 166 | break; | |
| 1207 | ✗ | default: | |
| 1208 | − | SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_ARG_OUTOFRANGE,"Invalid value of argument 'bal'"); | |
| 1209 | } | ||
| 1210 |
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166 | if (its==PETSC_DETERMINE) eps->balance_its = 5; |
| 1211 |
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166 | else if (its!=PETSC_CURRENT) { |
| 1212 |
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|
166 | PetscCheck(its>0,PetscObjectComm((PetscObject)eps),PETSC_ERR_ARG_OUTOFRANGE,"Illegal value of its. Must be > 0"); |
| 1213 | 166 | eps->balance_its = its; | |
| 1214 | } | ||
| 1215 |
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166 | if (cutoff==(PetscReal)PETSC_DETERMINE) eps->balance_cutoff = 1e-8; |
| 1216 |
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166 | else if (cutoff!=(PetscReal)PETSC_CURRENT) { |
| 1217 |
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|
166 | PetscCheck(cutoff>0.0,PetscObjectComm((PetscObject)eps),PETSC_ERR_ARG_OUTOFRANGE,"Illegal value of cutoff. Must be > 0"); |
| 1218 | 166 | eps->balance_cutoff = cutoff; | |
| 1219 | } | ||
| 1220 |
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|
32 | PetscFunctionReturn(PETSC_SUCCESS); |
| 1221 | } | ||
| 1222 | |||
| 1223 | /*@ | ||
| 1224 | EPSGetBalance - Gets the balancing type used by the `EPS` object, and the | ||
| 1225 | associated parameters. | ||
| 1226 | |||
| 1227 | Not Collective | ||
| 1228 | |||
| 1229 | Input Parameter: | ||
| 1230 | . eps - the linear eigensolver context | ||
| 1231 | |||
| 1232 | Output Parameters: | ||
| 1233 | + bal - the balancing method | ||
| 1234 | . its - number of iterations of the balancing algorithm | ||
| 1235 | - cutoff - cutoff value | ||
| 1236 | |||
| 1237 | Level: intermediate | ||
| 1238 | |||
| 1239 | Note: | ||
| 1240 | The user can specify `NULL` for any parameter that is not needed. | ||
| 1241 | |||
| 1242 | .seealso: [](ch:eps), `EPSSetBalance()`, `EPSBalance` | ||
| 1243 | @*/ | ||
| 1244 | 16 | PetscErrorCode EPSGetBalance(EPS eps,EPSBalance *bal,PetscInt *its,PetscReal *cutoff) | |
| 1245 | { | ||
| 1246 |
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|
16 | PetscFunctionBegin; |
| 1247 |
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16 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 1248 |
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16 | if (bal) *bal = eps->balance; |
| 1249 |
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16 | if (its) *its = eps->balance_its; |
| 1250 |
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16 | if (cutoff) *cutoff = eps->balance_cutoff; |
| 1251 |
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|
16 | PetscFunctionReturn(PETSC_SUCCESS); |
| 1252 | } | ||
| 1253 | |||
| 1254 | /*@ | ||
| 1255 | EPSSetTwoSided - Sets the solver to use a two-sided variant so that left | ||
| 1256 | eigenvectors are also computed. | ||
| 1257 | |||
| 1258 | Logically Collective | ||
| 1259 | |||
| 1260 | Input Parameters: | ||
| 1261 | + eps - the linear eigensolver context | ||
| 1262 | - twosided - whether the two-sided variant is to be used or not | ||
| 1263 | |||
| 1264 | Options Database Key: | ||
| 1265 | . -eps_two_sided (true|false) - toggles the twosided flag | ||
| 1266 | |||
| 1267 | Notes: | ||
| 1268 | If the user sets `twosided`=`PETSC_TRUE` then the solver uses a variant of | ||
| 1269 | the algorithm that computes both right and left eigenvectors. This is | ||
| 1270 | usually much more costly. This option is not available in all solvers, | ||
| 1271 | see table [](#tab:support). | ||
| 1272 | |||
| 1273 | When using two-sided solvers, the problem matrices must have both the | ||
| 1274 | `MATOP_MULT` and `MATOP_MULT_TRANSPOSE` operations defined. | ||
| 1275 | |||
| 1276 | Level: advanced | ||
| 1277 | |||
| 1278 | .seealso: [](ch:eps), `EPSGetTwoSided()`, `EPSGetLeftEigenvector()` | ||
| 1279 | @*/ | ||
| 1280 | 318 | PetscErrorCode EPSSetTwoSided(EPS eps,PetscBool twosided) | |
| 1281 | { | ||
| 1282 |
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318 | PetscFunctionBegin; |
| 1283 |
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318 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 1284 |
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|
318 | PetscValidLogicalCollectiveBool(eps,twosided,2); |
| 1285 |
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|
318 | if (twosided!=eps->twosided) { |
| 1286 | 209 | eps->twosided = twosided; | |
| 1287 | 209 | eps->state = EPS_STATE_INITIAL; | |
| 1288 | } | ||
| 1289 |
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|
318 | PetscFunctionReturn(PETSC_SUCCESS); |
| 1290 | } | ||
| 1291 | |||
| 1292 | /*@ | ||
| 1293 | EPSGetTwoSided - Returns the flag indicating whether a two-sided variant | ||
| 1294 | of the algorithm is being used or not. | ||
| 1295 | |||
| 1296 | Not Collective | ||
| 1297 | |||
| 1298 | Input Parameter: | ||
| 1299 | . eps - the linear eigensolver context | ||
| 1300 | |||
| 1301 | Output Parameter: | ||
| 1302 | . twosided - the returned flag | ||
| 1303 | |||
| 1304 | Level: advanced | ||
| 1305 | |||
| 1306 | .seealso: [](ch:eps), `EPSSetTwoSided()` | ||
| 1307 | @*/ | ||
| 1308 | 68 | PetscErrorCode EPSGetTwoSided(EPS eps,PetscBool *twosided) | |
| 1309 | { | ||
| 1310 |
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68 | PetscFunctionBegin; |
| 1311 |
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68 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 1312 |
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68 | PetscAssertPointer(twosided,2); |
| 1313 | 68 | *twosided = eps->twosided; | |
| 1314 |
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|
68 | PetscFunctionReturn(PETSC_SUCCESS); |
| 1315 | } | ||
| 1316 | |||
| 1317 | /*@ | ||
| 1318 | EPSSetTrueResidual - Specifies if the solver must compute the true residual | ||
| 1319 | explicitly or not. | ||
| 1320 | |||
| 1321 | Logically Collective | ||
| 1322 | |||
| 1323 | Input Parameters: | ||
| 1324 | + eps - the linear eigensolver context | ||
| 1325 | - trueres - whether true residuals are required or not | ||
| 1326 | |||
| 1327 | Options Database Key: | ||
| 1328 | . -eps_true_residual (true|false) - toggles the true residual | ||
| 1329 | |||
| 1330 | Notes: | ||
| 1331 | If the user sets `trueres`=`PETSC_TRUE` then the solver explicitly computes | ||
| 1332 | the true residual for each eigenpair approximation, and uses it for | ||
| 1333 | convergence testing. Computing the residual is usually an expensive | ||
| 1334 | operation. Some solvers (e.g., Krylov solvers) can avoid this computation | ||
| 1335 | by using a cheap estimate of the residual norm, but this may sometimes | ||
| 1336 | give inaccurate results (especially if a spectral transform is being | ||
| 1337 | used). On the contrary, preconditioned eigensolvers (e.g., Davidson solvers) | ||
| 1338 | do rely on computing the true residual, so this option is irrelevant for them. | ||
| 1339 | |||
| 1340 | Level: advanced | ||
| 1341 | |||
| 1342 | .seealso: [](ch:eps), `EPSGetTrueResidual()` | ||
| 1343 | @*/ | ||
| 1344 | 90 | PetscErrorCode EPSSetTrueResidual(EPS eps,PetscBool trueres) | |
| 1345 | { | ||
| 1346 |
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90 | PetscFunctionBegin; |
| 1347 |
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90 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 1348 |
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|
90 | PetscValidLogicalCollectiveBool(eps,trueres,2); |
| 1349 | 90 | eps->trueres = trueres; | |
| 1350 |
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90 | PetscFunctionReturn(PETSC_SUCCESS); |
| 1351 | } | ||
| 1352 | |||
| 1353 | /*@ | ||
| 1354 | EPSGetTrueResidual - Returns the flag indicating whether true | ||
| 1355 | residuals must be computed explicitly or not. | ||
| 1356 | |||
| 1357 | Not Collective | ||
| 1358 | |||
| 1359 | Input Parameter: | ||
| 1360 | . eps - the linear eigensolver context | ||
| 1361 | |||
| 1362 | Output Parameter: | ||
| 1363 | . trueres - the returned flag | ||
| 1364 | |||
| 1365 | Level: advanced | ||
| 1366 | |||
| 1367 | .seealso: [](ch:eps), `EPSSetTrueResidual()` | ||
| 1368 | @*/ | ||
| 1369 | 80 | PetscErrorCode EPSGetTrueResidual(EPS eps,PetscBool *trueres) | |
| 1370 | { | ||
| 1371 |
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80 | PetscFunctionBegin; |
| 1372 |
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80 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 1373 |
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80 | PetscAssertPointer(trueres,2); |
| 1374 | 80 | *trueres = eps->trueres; | |
| 1375 |
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80 | PetscFunctionReturn(PETSC_SUCCESS); |
| 1376 | } | ||
| 1377 | |||
| 1378 | /*@ | ||
| 1379 | EPSSetTrackAll - Specifies if the solver must compute the residual norm of all | ||
| 1380 | approximate eigenpairs or not. | ||
| 1381 | |||
| 1382 | Logically Collective | ||
| 1383 | |||
| 1384 | Input Parameters: | ||
| 1385 | + eps - the linear eigensolver context | ||
| 1386 | - trackall - whether to compute all residuals or not | ||
| 1387 | |||
| 1388 | Notes: | ||
| 1389 | If the user sets `trackall`=`PETSC_TRUE` then the solver computes (or estimates) | ||
| 1390 | the residual norm for each eigenpair approximation. Computing the residual is | ||
| 1391 | usually an expensive operation and solvers commonly compute only the residual | ||
| 1392 | associated to the first unconverged eigenpair. | ||
| 1393 | |||
| 1394 | The option `-eps_monitor_all` automatically activates this option. | ||
| 1395 | |||
| 1396 | Level: developer | ||
| 1397 | |||
| 1398 | .seealso: [](ch:eps), `EPSGetTrackAll()` | ||
| 1399 | @*/ | ||
| 1400 | 1527 | PetscErrorCode EPSSetTrackAll(EPS eps,PetscBool trackall) | |
| 1401 | { | ||
| 1402 |
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1527 | PetscFunctionBegin; |
| 1403 |
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1527 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 1404 |
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|
1527 | PetscValidLogicalCollectiveBool(eps,trackall,2); |
| 1405 | 1527 | eps->trackall = trackall; | |
| 1406 |
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1527 | PetscFunctionReturn(PETSC_SUCCESS); |
| 1407 | } | ||
| 1408 | |||
| 1409 | /*@ | ||
| 1410 | EPSGetTrackAll - Returns the flag indicating whether all residual norms must | ||
| 1411 | be computed or not. | ||
| 1412 | |||
| 1413 | Not Collective | ||
| 1414 | |||
| 1415 | Input Parameter: | ||
| 1416 | . eps - the linear eigensolver context | ||
| 1417 | |||
| 1418 | Output Parameter: | ||
| 1419 | . trackall - the returned flag | ||
| 1420 | |||
| 1421 | Level: developer | ||
| 1422 | |||
| 1423 | .seealso: [](ch:eps), `EPSSetTrackAll()` | ||
| 1424 | @*/ | ||
| 1425 | 10 | PetscErrorCode EPSGetTrackAll(EPS eps,PetscBool *trackall) | |
| 1426 | { | ||
| 1427 |
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10 | PetscFunctionBegin; |
| 1428 |
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10 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 1429 |
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10 | PetscAssertPointer(trackall,2); |
| 1430 | 10 | *trackall = eps->trackall; | |
| 1431 |
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|
10 | PetscFunctionReturn(PETSC_SUCCESS); |
| 1432 | } | ||
| 1433 | |||
| 1434 | /*@ | ||
| 1435 | EPSSetPurify - Disable eigenvector purification (which is enabled by default). | ||
| 1436 | |||
| 1437 | Logically Collective | ||
| 1438 | |||
| 1439 | Input Parameters: | ||
| 1440 | + eps - the linear eigensolver context | ||
| 1441 | - purify - whether purification is done or not, use `PETSC_FALSE` to disable it | ||
| 1442 | |||
| 1443 | Options Database Key: | ||
| 1444 | . -eps_purify (true|false) - toggles the purification flag | ||
| 1445 | |||
| 1446 | Notes: | ||
| 1447 | By default, eigenvectors of generalized symmetric eigenproblems are purified | ||
| 1448 | in order to purge directions in the nullspace of matrix $B$. If the user knows | ||
| 1449 | that $B$ is non-singular, then purification can be safely deactivated and some | ||
| 1450 | computational cost is avoided (this is particularly important in interval computations). | ||
| 1451 | |||
| 1452 | More details are given in section [](#sec:purif). | ||
| 1453 | |||
| 1454 | Level: intermediate | ||
| 1455 | |||
| 1456 | .seealso: [](ch:eps), [](#sec:purif), `EPSGetPurify()`, `EPSSetInterval()` | ||
| 1457 | @*/ | ||
| 1458 | 40 | PetscErrorCode EPSSetPurify(EPS eps,PetscBool purify) | |
| 1459 | { | ||
| 1460 |
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40 | PetscFunctionBegin; |
| 1461 |
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40 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 1462 |
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|
40 | PetscValidLogicalCollectiveBool(eps,purify,2); |
| 1463 |
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40 | if (purify!=eps->purify) { |
| 1464 | 20 | eps->purify = purify; | |
| 1465 | 20 | eps->state = EPS_STATE_INITIAL; | |
| 1466 | } | ||
| 1467 |
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|
40 | PetscFunctionReturn(PETSC_SUCCESS); |
| 1468 | } | ||
| 1469 | |||
| 1470 | /*@ | ||
| 1471 | EPSGetPurify - Returns the flag indicating whether purification is activated | ||
| 1472 | or not. | ||
| 1473 | |||
| 1474 | Not Collective | ||
| 1475 | |||
| 1476 | Input Parameter: | ||
| 1477 | . eps - the linear eigensolver context | ||
| 1478 | |||
| 1479 | Output Parameter: | ||
| 1480 | . purify - the returned flag | ||
| 1481 | |||
| 1482 | Level: intermediate | ||
| 1483 | |||
| 1484 | .seealso: [](ch:eps), `EPSSetPurify()` | ||
| 1485 | @*/ | ||
| 1486 | 10 | PetscErrorCode EPSGetPurify(EPS eps,PetscBool *purify) | |
| 1487 | { | ||
| 1488 |
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10 | PetscFunctionBegin; |
| 1489 |
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10 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 1490 |
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|
10 | PetscAssertPointer(purify,2); |
| 1491 | 10 | *purify = eps->purify; | |
| 1492 |
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|
10 | PetscFunctionReturn(PETSC_SUCCESS); |
| 1493 | } | ||
| 1494 | |||
| 1495 | /*@ | ||
| 1496 | EPSSetOptionsPrefix - Sets the prefix used for searching for all | ||
| 1497 | `EPS` options in the database. | ||
| 1498 | |||
| 1499 | Logically Collective | ||
| 1500 | |||
| 1501 | Input Parameters: | ||
| 1502 | + eps - the linear eigensolver context | ||
| 1503 | - prefix - the prefix string to prepend to all `EPS` option requests | ||
| 1504 | |||
| 1505 | Notes: | ||
| 1506 | A hyphen (-) must NOT be given at the beginning of the prefix name. | ||
| 1507 | The first character of all runtime options is AUTOMATICALLY the | ||
| 1508 | hyphen. | ||
| 1509 | |||
| 1510 | For example, to distinguish between the runtime options for two | ||
| 1511 | different `EPS` contexts, one could call | ||
| 1512 | .vb | ||
| 1513 | EPSSetOptionsPrefix(eps1,"eig1_") | ||
| 1514 | EPSSetOptionsPrefix(eps2,"eig2_") | ||
| 1515 | .ve | ||
| 1516 | |||
| 1517 | Level: advanced | ||
| 1518 | |||
| 1519 | .seealso: [](ch:eps), `EPSAppendOptionsPrefix()`, `EPSGetOptionsPrefix()` | ||
| 1520 | @*/ | ||
| 1521 | 2153 | PetscErrorCode EPSSetOptionsPrefix(EPS eps,const char prefix[]) | |
| 1522 | { | ||
| 1523 |
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2153 | PetscFunctionBegin; |
| 1524 |
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2153 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
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2153 | if (!eps->st) PetscCall(EPSGetST(eps,&eps->st)); |
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2153 | PetscCall(STSetOptionsPrefix(eps->st,prefix)); |
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2153 | if (!eps->V) PetscCall(EPSGetBV(eps,&eps->V)); |
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2153 | PetscCall(BVSetOptionsPrefix(eps->V,prefix)); |
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2153 | if (!eps->ds) PetscCall(EPSGetDS(eps,&eps->ds)); |
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2153 | PetscCall(DSSetOptionsPrefix(eps->ds,prefix)); |
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2153 | if (!eps->rg) PetscCall(EPSGetRG(eps,&eps->rg)); |
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2153 | PetscCall(RGSetOptionsPrefix(eps->rg,prefix)); |
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2153 | PetscCall(PetscObjectSetOptionsPrefix((PetscObject)eps,prefix)); |
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420 | PetscFunctionReturn(PETSC_SUCCESS); |
| 1535 | } | ||
| 1536 | |||
| 1537 | /*@ | ||
| 1538 | EPSAppendOptionsPrefix - Appends to the prefix used for searching for all | ||
| 1539 | `EPS` options in the database. | ||
| 1540 | |||
| 1541 | Logically Collective | ||
| 1542 | |||
| 1543 | Input Parameters: | ||
| 1544 | + eps - the linear eigensolver context | ||
| 1545 | - prefix - the prefix string to prepend to all `EPS` option requests | ||
| 1546 | |||
| 1547 | Notes: | ||
| 1548 | A hyphen (-) must NOT be given at the beginning of the prefix name. | ||
| 1549 | The first character of all runtime options is AUTOMATICALLY the hyphen. | ||
| 1550 | |||
| 1551 | Level: advanced | ||
| 1552 | |||
| 1553 | .seealso: [](ch:eps), `EPSSetOptionsPrefix()`, `EPSGetOptionsPrefix()` | ||
| 1554 | @*/ | ||
| 1555 | 1702 | PetscErrorCode EPSAppendOptionsPrefix(EPS eps,const char prefix[]) | |
| 1556 | { | ||
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1702 | PetscFunctionBegin; |
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1702 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
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1702 | if (!eps->st) PetscCall(EPSGetST(eps,&eps->st)); |
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1702 | PetscCall(STAppendOptionsPrefix(eps->st,prefix)); |
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1702 | if (!eps->V) PetscCall(EPSGetBV(eps,&eps->V)); |
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1702 | PetscCall(BVAppendOptionsPrefix(eps->V,prefix)); |
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1702 | if (!eps->ds) PetscCall(EPSGetDS(eps,&eps->ds)); |
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1702 | PetscCall(DSAppendOptionsPrefix(eps->ds,prefix)); |
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1702 | if (!eps->rg) PetscCall(EPSGetRG(eps,&eps->rg)); |
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1702 | PetscCall(RGAppendOptionsPrefix(eps->rg,prefix)); |
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1702 | PetscCall(PetscObjectAppendOptionsPrefix((PetscObject)eps,prefix)); |
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338 | PetscFunctionReturn(PETSC_SUCCESS); |
| 1569 | } | ||
| 1570 | |||
| 1571 | /*@ | ||
| 1572 | EPSGetOptionsPrefix - Gets the prefix used for searching for all | ||
| 1573 | `EPS` options in the database. | ||
| 1574 | |||
| 1575 | Not Collective | ||
| 1576 | |||
| 1577 | Input Parameter: | ||
| 1578 | . eps - the linear eigensolver context | ||
| 1579 | |||
| 1580 | Output Parameter: | ||
| 1581 | . prefix - pointer to the prefix string used is returned | ||
| 1582 | |||
| 1583 | Level: advanced | ||
| 1584 | |||
| 1585 | .seealso: [](ch:eps), `EPSSetOptionsPrefix()`, `EPSAppendOptionsPrefix()` | ||
| 1586 | @*/ | ||
| 1587 | 318 | PetscErrorCode EPSGetOptionsPrefix(EPS eps,const char *prefix[]) | |
| 1588 | { | ||
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318 | PetscFunctionBegin; |
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318 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
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318 | PetscAssertPointer(prefix,2); |
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318 | PetscCall(PetscObjectGetOptionsPrefix((PetscObject)eps,prefix)); |
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54 | PetscFunctionReturn(PETSC_SUCCESS); |
| 1594 | } | ||
| 1595 |