| 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 | The SVD routines related to various viewers | ||
| 12 | */ | ||
| 13 | |||
| 14 | #include <slepc/private/svdimpl.h> /*I "slepcsvd.h" I*/ | ||
| 15 | #include <petscdraw.h> | ||
| 16 | |||
| 17 | /*@ | ||
| 18 | SVDView - Prints the `SVD` data structure. | ||
| 19 | |||
| 20 | Collective | ||
| 21 | |||
| 22 | Input Parameters: | ||
| 23 | + svd - the singular value solver context | ||
| 24 | - viewer - optional visualization context | ||
| 25 | |||
| 26 | Options Database Key: | ||
| 27 | . -svd_view - calls `SVDView()` at end of `SVDSolve()` | ||
| 28 | |||
| 29 | Notes: | ||
| 30 | The available visualization contexts include | ||
| 31 | + `PETSC_VIEWER_STDOUT_SELF` - standard output (default) | ||
| 32 | - `PETSC_VIEWER_STDOUT_WORLD` - synchronized standard output where only the | ||
| 33 | first process opens the file; all other processes send their data to the | ||
| 34 | first one to print | ||
| 35 | |||
| 36 | The user can open an alternative visualization context with `PetscViewerASCIIOpen()` | ||
| 37 | to output to a specified file. | ||
| 38 | |||
| 39 | Level: beginner | ||
| 40 | |||
| 41 | .seealso: [](ch:svd), `SVDCreate()`, `SVDViewFromOptions()`, `EPSView()` | ||
| 42 | @*/ | ||
| 43 | 28 | PetscErrorCode SVDView(SVD svd,PetscViewer viewer) | |
| 44 | { | ||
| 45 | 28 | const char *type=NULL; | |
| 46 | 28 | PetscBool isascii,isshell,isexternal; | |
| 47 | |||
| 48 |
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28 | PetscFunctionBegin; |
| 49 |
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28 | PetscValidHeaderSpecific(svd,SVD_CLASSID,1); |
| 50 |
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28 | if (!viewer) PetscCall(PetscViewerASCIIGetStdout(PetscObjectComm((PetscObject)svd),&viewer)); |
| 51 |
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28 | PetscValidHeaderSpecific(viewer,PETSC_VIEWER_CLASSID,2); |
| 52 |
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28 | PetscCheckSameComm(svd,1,viewer,2); |
| 53 | |||
| 54 |
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28 | PetscCall(PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&isascii)); |
| 55 |
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28 | if (isascii) { |
| 56 |
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28 | PetscCall(PetscObjectPrintClassNamePrefixType((PetscObject)svd,viewer)); |
| 57 |
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28 | PetscCall(PetscViewerASCIIPushTab(viewer)); |
| 58 |
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28 | PetscTryTypeMethod(svd,view,viewer); |
| 59 |
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28 | PetscCall(PetscViewerASCIIPopTab(viewer)); |
| 60 |
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28 | if (svd->problem_type) { |
| 61 |
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28 | switch (svd->problem_type) { |
| 62 | 28 | case SVD_STANDARD: type = "(standard) singular value problem"; break; | |
| 63 | ✗ | case SVD_GENERALIZED: type = "generalized singular value problem"; break; | |
| 64 | ✗ | case SVD_HYPERBOLIC: type = "hyperbolic singular value problem"; break; | |
| 65 | } | ||
| 66 | } else type = "not yet set"; | ||
| 67 |
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28 | PetscCall(PetscViewerASCIIPrintf(viewer," problem type: %s\n",type)); |
| 68 |
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56 | PetscCall(PetscViewerASCIIPrintf(viewer," transpose mode: %s\n",svd->impltrans?"implicit":"explicit")); |
| 69 |
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28 | if (svd->which == SVD_LARGEST) PetscCall(PetscViewerASCIIPrintf(viewer," selected portion of the spectrum: largest\n")); |
| 70 | ✗ | else PetscCall(PetscViewerASCIIPrintf(viewer," selected portion of the spectrum: smallest\n")); | |
| 71 |
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28 | if (svd->stop==SVD_STOP_THRESHOLD) PetscCall(PetscViewerASCIIPrintf(viewer," computing singular values %s the threshold: %g%s\n",svd->which==SVD_LARGEST?"above":"below",(double)svd->thres,svd->threlative?" (relative)":"")); |
| 72 |
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28 | if (svd->nsv) PetscCall(PetscViewerASCIIPrintf(viewer," number of singular values (nsv): %" PetscInt_FMT "\n",svd->nsv)); |
| 73 |
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28 | PetscCall(PetscViewerASCIIPrintf(viewer," number of column vectors (ncv): %" PetscInt_FMT "\n",svd->ncv)); |
| 74 |
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28 | PetscCall(PetscViewerASCIIPrintf(viewer," maximum dimension of projected problem (mpd): %" PetscInt_FMT "\n",svd->mpd)); |
| 75 |
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28 | PetscCall(PetscViewerASCIIPrintf(viewer," maximum number of iterations: %" PetscInt_FMT "\n",svd->max_it)); |
| 76 |
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28 | PetscCall(PetscViewerASCIIPrintf(viewer," tolerance: %g\n",(double)svd->tol)); |
| 77 |
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28 | PetscCall(PetscViewerASCIIPrintf(viewer," convergence test: ")); |
| 78 |
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28 | PetscCall(PetscViewerASCIIUseTabs(viewer,PETSC_FALSE)); |
| 79 |
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28 | switch (svd->conv) { |
| 80 | ✗ | case SVD_CONV_ABS: | |
| 81 | ✗ | PetscCall(PetscViewerASCIIPrintf(viewer,"absolute\n"));break; | |
| 82 | 28 | case SVD_CONV_REL: | |
| 83 |
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28 | PetscCall(PetscViewerASCIIPrintf(viewer,"relative to the singular value\n"));break; |
| 84 | ✗ | case SVD_CONV_NORM: | |
| 85 | ✗ | PetscCall(PetscViewerASCIIPrintf(viewer,"relative to the matrix norms\n")); | |
| 86 | ✗ | PetscCall(PetscViewerASCIIPrintf(viewer," computed matrix norms: norm(A)=%g",(double)svd->nrma)); | |
| 87 | ✗ | if (svd->isgeneralized) PetscCall(PetscViewerASCIIPrintf(viewer,", norm(B)=%g",(double)svd->nrmb)); | |
| 88 | ✗ | PetscCall(PetscViewerASCIIPrintf(viewer,"\n")); | |
| 89 | break; | ||
| 90 | ✗ | case SVD_CONV_MAXIT: | |
| 91 | ✗ | PetscCall(PetscViewerASCIIPrintf(viewer,"maximum number of iterations\n"));break; | |
| 92 | ✗ | case SVD_CONV_USER: | |
| 93 | ✗ | PetscCall(PetscViewerASCIIPrintf(viewer,"user-defined\n"));break; | |
| 94 | } | ||
| 95 |
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28 | PetscCall(PetscViewerASCIIUseTabs(viewer,PETSC_TRUE)); |
| 96 |
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28 | if (svd->nini) PetscCall(PetscViewerASCIIPrintf(viewer," dimension of user-provided initial space: %" PetscInt_FMT "\n",PetscAbs(svd->nini))); |
| 97 |
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28 | if (svd->ninil) PetscCall(PetscViewerASCIIPrintf(viewer," dimension of user-provided initial left space: %" PetscInt_FMT "\n",PetscAbs(svd->ninil))); |
| 98 | ✗ | } else PetscTryTypeMethod(svd,view,viewer); | |
| 99 |
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28 | PetscCall(PetscObjectTypeCompareAny((PetscObject)svd,&isshell,SVDCROSS,SVDCYCLIC,"")); |
| 100 |
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28 | PetscCall(PetscObjectTypeCompareAny((PetscObject)svd,&isexternal,SVDSCALAPACK,SVDKSVD,SVDELEMENTAL,SVDPRIMME,"")); |
| 101 |
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28 | if (!isshell && !isexternal) { |
| 102 |
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10 | PetscCall(PetscViewerPushFormat(viewer,PETSC_VIEWER_ASCII_INFO)); |
| 103 |
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10 | if (!svd->V) PetscCall(SVDGetBV(svd,&svd->V,NULL)); |
| 104 |
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10 | PetscCall(BVView(svd->V,viewer)); |
| 105 |
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10 | if (!svd->ds) PetscCall(SVDGetDS(svd,&svd->ds)); |
| 106 |
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10 | PetscCall(DSView(svd->ds,viewer)); |
| 107 |
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10 | PetscCall(PetscViewerPopFormat(viewer)); |
| 108 | } | ||
| 109 |
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6 | PetscFunctionReturn(PETSC_SUCCESS); |
| 110 | } | ||
| 111 | |||
| 112 | /*@ | ||
| 113 | SVDViewFromOptions - View (print) an `SVD` object based on values in the options database. | ||
| 114 | |||
| 115 | Collective | ||
| 116 | |||
| 117 | Input Parameters: | ||
| 118 | + svd - the singular value solver context | ||
| 119 | . obj - optional object that provides the options prefix used to query the options database | ||
| 120 | - name - command line option | ||
| 121 | |||
| 122 | Level: intermediate | ||
| 123 | |||
| 124 | .seealso: [](ch:svd), `SVDView()`, `SVDCreate()`, `PetscObjectViewFromOptions()` | ||
| 125 | @*/ | ||
| 126 | 5532 | PetscErrorCode SVDViewFromOptions(SVD svd,PetscObject obj,const char name[]) | |
| 127 | { | ||
| 128 |
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5532 | PetscFunctionBegin; |
| 129 |
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5532 | PetscValidHeaderSpecific(svd,SVD_CLASSID,1); |
| 130 |
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5532 | PetscCall(PetscObjectViewFromOptions((PetscObject)svd,obj,name)); |
| 131 |
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1092 | PetscFunctionReturn(PETSC_SUCCESS); |
| 132 | } | ||
| 133 | |||
| 134 | /*@ | ||
| 135 | SVDConvergedReasonView - Displays the reason an `SVD` solve converged or diverged. | ||
| 136 | |||
| 137 | Collective | ||
| 138 | |||
| 139 | Input Parameters: | ||
| 140 | + svd - the singular value solver context | ||
| 141 | - viewer - the viewer to display the reason | ||
| 142 | |||
| 143 | Options Database Key: | ||
| 144 | . -svd_converged_reason - print reason for convergence/divergence, and number of iterations | ||
| 145 | |||
| 146 | Notes: | ||
| 147 | Use `SVDConvergedReasonViewFromOptions()` to display the reason based on values | ||
| 148 | in the options database. | ||
| 149 | |||
| 150 | To change the format of the output call `PetscViewerPushFormat()` before this | ||
| 151 | call. Use `PETSC_VIEWER_DEFAULT` for the default, or `PETSC_VIEWER_FAILED` to only | ||
| 152 | display a reason if it fails. The latter can be set in the command line with | ||
| 153 | `-svd_converged_reason ::failed`. | ||
| 154 | |||
| 155 | Level: intermediate | ||
| 156 | |||
| 157 | .seealso: [](ch:svd), `SVDSetTolerances()`, `SVDGetIterationNumber()`, `SVDConvergedReasonViewFromOptions()` | ||
| 158 | @*/ | ||
| 159 | 28 | PetscErrorCode SVDConvergedReasonView(SVD svd,PetscViewer viewer) | |
| 160 | { | ||
| 161 | 28 | PetscBool isAscii; | |
| 162 | 28 | PetscViewerFormat format; | |
| 163 | |||
| 164 |
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28 | PetscFunctionBegin; |
| 165 |
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28 | if (!viewer) viewer = PETSC_VIEWER_STDOUT_(PetscObjectComm((PetscObject)svd)); |
| 166 |
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28 | PetscCall(PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&isAscii)); |
| 167 |
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28 | if (isAscii) { |
| 168 |
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28 | PetscCall(PetscViewerGetFormat(viewer,&format)); |
| 169 |
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28 | PetscCall(PetscViewerASCIIAddTab(viewer,((PetscObject)svd)->tablevel)); |
| 170 |
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28 | if (svd->reason > 0 && format != PETSC_VIEWER_FAILED) PetscCall(PetscViewerASCIIPrintf(viewer,"%s SVD solve converged (%" PetscInt_FMT " singular triplet%s) due to %s; iterations %" PetscInt_FMT "\n",((PetscObject)svd)->prefix?((PetscObject)svd)->prefix:"",svd->nconv,(svd->nconv>1)?"s":"",SVDConvergedReasons[svd->reason],svd->its)); |
| 171 | ✗ | else if (svd->reason <= 0) PetscCall(PetscViewerASCIIPrintf(viewer,"%s SVD solve did not converge due to %s; iterations %" PetscInt_FMT "\n",((PetscObject)svd)->prefix?((PetscObject)svd)->prefix:"",SVDConvergedReasons[svd->reason],svd->its)); | |
| 172 |
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28 | PetscCall(PetscViewerASCIISubtractTab(viewer,((PetscObject)svd)->tablevel)); |
| 173 | } | ||
| 174 |
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6 | PetscFunctionReturn(PETSC_SUCCESS); |
| 175 | } | ||
| 176 | |||
| 177 | /*@ | ||
| 178 | SVDConvergedReasonViewFromOptions - Processes command line options to determine if/how | ||
| 179 | the `SVD` converged reason is to be viewed. | ||
| 180 | |||
| 181 | Collective | ||
| 182 | |||
| 183 | Input Parameter: | ||
| 184 | . svd - the singular value solver context | ||
| 185 | |||
| 186 | Level: intermediate | ||
| 187 | |||
| 188 | .seealso: [](ch:svd), `SVDConvergedReasonView()` | ||
| 189 | @*/ | ||
| 190 | 2766 | PetscErrorCode SVDConvergedReasonViewFromOptions(SVD svd) | |
| 191 | { | ||
| 192 | 2766 | PetscViewer viewer; | |
| 193 | 2766 | PetscBool flg; | |
| 194 | 2766 | static PetscBool incall = PETSC_FALSE; | |
| 195 | 2766 | PetscViewerFormat format; | |
| 196 | |||
| 197 |
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2766 | PetscFunctionBegin; |
| 198 |
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2766 | if (incall) PetscFunctionReturn(PETSC_SUCCESS); |
| 199 | 2766 | incall = PETSC_TRUE; | |
| 200 |
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2766 | PetscCall(PetscOptionsCreateViewer(PetscObjectComm((PetscObject)svd),((PetscObject)svd)->options,((PetscObject)svd)->prefix,"-svd_converged_reason",&viewer,&format,&flg)); |
| 201 |
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2766 | if (flg) { |
| 202 |
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20 | PetscCall(PetscViewerPushFormat(viewer,format)); |
| 203 |
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20 | PetscCall(SVDConvergedReasonView(svd,viewer)); |
| 204 |
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20 | PetscCall(PetscViewerPopFormat(viewer)); |
| 205 |
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20 | PetscCall(PetscViewerDestroy(&viewer)); |
| 206 | } | ||
| 207 | 2766 | incall = PETSC_FALSE; | |
| 208 |
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2766 | PetscFunctionReturn(PETSC_SUCCESS); |
| 209 | } | ||
| 210 | |||
| 211 | 2116 | static PetscErrorCode SVDErrorView_ASCII(SVD svd,SVDErrorType etype,PetscViewer viewer) | |
| 212 | { | ||
| 213 | 2116 | PetscReal error,sigma; | |
| 214 | 2116 | PetscInt i,j,numsv; | |
| 215 | 2116 | PetscBool requestednsv=PETSC_TRUE; /* user has specified nsv */ | |
| 216 |
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2116 | const char *svstring = svd->isgeneralized?"generalized singular values":"singular values"; |
| 217 | |||
| 218 |
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2116 | PetscFunctionBegin; |
| 219 |
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2116 | if (svd->stop==SVD_STOP_THRESHOLD && svd->nsv==0) requestednsv = PETSC_FALSE; |
| 220 | 2116 | numsv = requestednsv? svd->nsv: svd->nconv; | |
| 221 |
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2116 | if (requestednsv && svd->nconv<numsv) { |
| 222 | ✗ | PetscCall(PetscViewerASCIIPrintf(viewer," Problem: less than %" PetscInt_FMT " %s converged\n\n",numsv,svstring)); | |
| 223 | ✗ | PetscFunctionReturn(PETSC_SUCCESS); | |
| 224 | } | ||
| 225 |
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2116 | if (!requestednsv && !numsv) { |
| 226 | ✗ | PetscCall(PetscViewerASCIIPrintf(viewer," No %s have been found\n\n",svstring)); | |
| 227 | ✗ | PetscFunctionReturn(PETSC_SUCCESS); | |
| 228 | } | ||
| 229 |
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12577 | for (i=0;i<numsv;i++) { |
| 230 |
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10461 | PetscCall(SVDComputeError(svd,i,etype,&error)); |
| 231 |
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10461 | if (error>=5.0*svd->tol) { |
| 232 | ✗ | PetscCall(PetscViewerASCIIPrintf(viewer," Problem: some of the first %" PetscInt_FMT " relative errors are higher than the tolerance\n\n",numsv)); | |
| 233 |
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2524 | PetscFunctionReturn(PETSC_SUCCESS); |
| 234 | } | ||
| 235 | } | ||
| 236 |
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2116 | if (!requestednsv) PetscCall(PetscViewerASCIIPrintf(viewer," Found %" PetscInt_FMT " %s, all of them computed up to the required tolerance:",numsv,svstring)); |
| 237 |
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2031 | else PetscCall(PetscViewerASCIIPrintf(viewer," All requested %s computed up to the required tolerance:",svstring)); |
| 238 |
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4634 | for (i=0;i<=(numsv-1)/8;i++) { |
| 239 |
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2518 | PetscCall(PetscViewerASCIIPrintf(viewer,"\n ")); |
| 240 |
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12979 | for (j=0;j<PetscMin(8,numsv-8*i);j++) { |
| 241 |
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10461 | PetscCall(SVDGetSingularTriplet(svd,8*i+j,&sigma,NULL,NULL)); |
| 242 |
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10461 | PetscCall(PetscViewerASCIIPrintf(viewer,"%.5f",(double)sigma)); |
| 243 |
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10461 | if (8*i+j+1<numsv) PetscCall(PetscViewerASCIIPrintf(viewer,", ")); |
| 244 | } | ||
| 245 | } | ||
| 246 |
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2116 | PetscCall(PetscViewerASCIIPrintf(viewer,"\n\n")); |
| 247 |
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418 | PetscFunctionReturn(PETSC_SUCCESS); |
| 248 | } | ||
| 249 | |||
| 250 | 38 | static PetscErrorCode SVDErrorView_DETAIL(SVD svd,SVDErrorType etype,PetscViewer viewer) | |
| 251 | { | ||
| 252 | 38 | PetscReal error,sigma; | |
| 253 | 38 | PetscInt i; | |
| 254 | 38 | char ex[30],sep[]=" ---------------------- --------------------\n"; | |
| 255 | |||
| 256 |
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38 | PetscFunctionBegin; |
| 257 |
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38 | if (!svd->nconv) PetscFunctionReturn(PETSC_SUCCESS); |
| 258 |
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38 | switch (etype) { |
| 259 | ✗ | case SVD_ERROR_ABSOLUTE: | |
| 260 | ✗ | PetscCall(PetscSNPrintf(ex,sizeof(ex)," absolute error")); | |
| 261 | break; | ||
| 262 | 28 | case SVD_ERROR_RELATIVE: | |
| 263 |
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28 | PetscCall(PetscSNPrintf(ex,sizeof(ex)," relative error")); |
| 264 | break; | ||
| 265 | 10 | case SVD_ERROR_NORM: | |
| 266 |
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10 | if (svd->isgeneralized) PetscCall(PetscSNPrintf(ex,sizeof(ex)," ||r||/||[A;B]||")); |
| 267 |
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10 | else PetscCall(PetscSNPrintf(ex,sizeof(ex)," ||r||/||A||")); |
| 268 | break; | ||
| 269 | } | ||
| 270 |
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38 | PetscCall(PetscViewerASCIIPrintf(viewer,"%s sigma %s\n%s",sep,ex,sep)); |
| 271 |
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258 | for (i=0;i<svd->nconv;i++) { |
| 272 |
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220 | PetscCall(SVDGetSingularTriplet(svd,i,&sigma,NULL,NULL)); |
| 273 |
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220 | PetscCall(SVDComputeError(svd,i,etype,&error)); |
| 274 |
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220 | PetscCall(PetscViewerASCIIPrintf(viewer," % 6f %12g\n",(double)sigma,(double)error)); |
| 275 | } | ||
| 276 |
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38 | PetscCall(PetscViewerASCIIPrintf(viewer,"%s",sep)); |
| 277 |
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8 | PetscFunctionReturn(PETSC_SUCCESS); |
| 278 | } | ||
| 279 | |||
| 280 | 20 | static PetscErrorCode SVDErrorView_MATLAB(SVD svd,SVDErrorType etype,PetscViewer viewer) | |
| 281 | { | ||
| 282 | 20 | PetscReal error; | |
| 283 | 20 | PetscInt i; | |
| 284 | 20 | const char *name; | |
| 285 | |||
| 286 |
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20 | PetscFunctionBegin; |
| 287 |
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20 | PetscCall(PetscObjectGetName((PetscObject)svd,&name)); |
| 288 |
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20 | PetscCall(PetscViewerASCIIPrintf(viewer,"Error_%s = [\n",name)); |
| 289 |
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140 | for (i=0;i<svd->nconv;i++) { |
| 290 |
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120 | PetscCall(SVDComputeError(svd,i,etype,&error)); |
| 291 |
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120 | PetscCall(PetscViewerASCIIPrintf(viewer,"%18.16e\n",(double)error)); |
| 292 | } | ||
| 293 |
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20 | PetscCall(PetscViewerASCIIPrintf(viewer,"];\n")); |
| 294 |
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4 | PetscFunctionReturn(PETSC_SUCCESS); |
| 295 | } | ||
| 296 | |||
| 297 | /*@ | ||
| 298 | SVDErrorView - Displays the errors associated with the computed solution | ||
| 299 | (as well as the singular values). | ||
| 300 | |||
| 301 | Collective | ||
| 302 | |||
| 303 | Input Parameters: | ||
| 304 | + svd - the singular value solver context | ||
| 305 | . etype - error type | ||
| 306 | - viewer - optional visualization context | ||
| 307 | |||
| 308 | Options Database Keys: | ||
| 309 | + -svd_error_absolute - print absolute errors of each singular triplet | ||
| 310 | . -svd_error_relative - print relative errors of each singular triplet | ||
| 311 | - -svd_error_norm - print errors relative to the matrix norms of each singular triplet | ||
| 312 | |||
| 313 | Notes: | ||
| 314 | By default, this function checks the error of all singular triplets and prints | ||
| 315 | the singular values if all of them are below the requested tolerance. | ||
| 316 | If the viewer has format `PETSC_VIEWER_ASCII_INFO_DETAIL` then a table with | ||
| 317 | singular values and corresponding errors is printed. | ||
| 318 | |||
| 319 | All the command-line options listed above admit an optional argument | ||
| 320 | specifying the viewer type and options. For instance, use | ||
| 321 | `-svd_error_relative :myerr.m:ascii_matlab` to save the errors in a file | ||
| 322 | that can be executed in Matlab. | ||
| 323 | |||
| 324 | Level: intermediate | ||
| 325 | |||
| 326 | .seealso: [](ch:svd), `SVDSolve()`, `SVDValuesView()`, `SVDVectorsView()` | ||
| 327 | @*/ | ||
| 328 | 2174 | PetscErrorCode SVDErrorView(SVD svd,SVDErrorType etype,PetscViewer viewer) | |
| 329 | { | ||
| 330 | 2174 | PetscBool isascii; | |
| 331 | 2174 | PetscViewerFormat format; | |
| 332 | |||
| 333 |
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2174 | PetscFunctionBegin; |
| 334 |
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2174 | PetscValidHeaderSpecific(svd,SVD_CLASSID,1); |
| 335 |
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2174 | if (!viewer) PetscCall(PetscViewerASCIIGetStdout(PetscObjectComm((PetscObject)svd),&viewer)); |
| 336 |
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2174 | PetscValidHeaderSpecific(viewer,PETSC_VIEWER_CLASSID,3); |
| 337 |
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2174 | PetscCheckSameComm(svd,1,viewer,3); |
| 338 |
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2174 | SVDCheckSolved(svd,1); |
| 339 |
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2174 | PetscCall(PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&isascii)); |
| 340 |
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2174 | if (!isascii) PetscFunctionReturn(PETSC_SUCCESS); |
| 341 | |||
| 342 |
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2174 | PetscCall(PetscViewerGetFormat(viewer,&format)); |
| 343 |
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2174 | switch (format) { |
| 344 | 2116 | case PETSC_VIEWER_DEFAULT: | |
| 345 | case PETSC_VIEWER_ASCII_INFO: | ||
| 346 |
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2116 | PetscCall(SVDErrorView_ASCII(svd,etype,viewer)); |
| 347 | break; | ||
| 348 | 38 | case PETSC_VIEWER_ASCII_INFO_DETAIL: | |
| 349 |
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38 | PetscCall(SVDErrorView_DETAIL(svd,etype,viewer)); |
| 350 | break; | ||
| 351 | 20 | case PETSC_VIEWER_ASCII_MATLAB: | |
| 352 |
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20 | PetscCall(SVDErrorView_MATLAB(svd,etype,viewer)); |
| 353 | break; | ||
| 354 | ✗ | default: | |
| 355 | ✗ | PetscCall(PetscInfo(svd,"Unsupported viewer format %s\n",PetscViewerFormats[format])); | |
| 356 | } | ||
| 357 |
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430 | PetscFunctionReturn(PETSC_SUCCESS); |
| 358 | } | ||
| 359 | |||
| 360 | /*@ | ||
| 361 | SVDErrorViewFromOptions - Processes command line options to determine if/how | ||
| 362 | the errors of the computed solution are to be viewed. | ||
| 363 | |||
| 364 | Collective | ||
| 365 | |||
| 366 | Input Parameter: | ||
| 367 | . svd - the singular value solver context | ||
| 368 | |||
| 369 | Level: developer | ||
| 370 | |||
| 371 | .seealso: [](ch:svd), `SVDErrorView()` | ||
| 372 | @*/ | ||
| 373 | 2766 | PetscErrorCode SVDErrorViewFromOptions(SVD svd) | |
| 374 | { | ||
| 375 | 2766 | PetscViewer viewer; | |
| 376 | 2766 | PetscBool flg; | |
| 377 | 2766 | static PetscBool incall = PETSC_FALSE; | |
| 378 | 2766 | PetscViewerFormat format; | |
| 379 | |||
| 380 |
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2766 | PetscFunctionBegin; |
| 381 |
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2766 | if (incall) PetscFunctionReturn(PETSC_SUCCESS); |
| 382 | 2766 | incall = PETSC_TRUE; | |
| 383 |
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2766 | PetscCall(PetscOptionsCreateViewer(PetscObjectComm((PetscObject)svd),((PetscObject)svd)->options,((PetscObject)svd)->prefix,"-svd_error_absolute",&viewer,&format,&flg)); |
| 384 |
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2766 | if (flg) { |
| 385 |
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20 | PetscCall(PetscViewerPushFormat(viewer,format)); |
| 386 |
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20 | PetscCall(SVDErrorView(svd,SVD_ERROR_ABSOLUTE,viewer)); |
| 387 |
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20 | PetscCall(PetscViewerPopFormat(viewer)); |
| 388 |
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20 | PetscCall(PetscViewerDestroy(&viewer)); |
| 389 | } | ||
| 390 |
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2766 | PetscCall(PetscOptionsCreateViewer(PetscObjectComm((PetscObject)svd),((PetscObject)svd)->options,((PetscObject)svd)->prefix,"-svd_error_relative",&viewer,&format,&flg)); |
| 391 |
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2766 | if (flg) { |
| 392 |
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20 | PetscCall(PetscViewerPushFormat(viewer,format)); |
| 393 |
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20 | PetscCall(SVDErrorView(svd,SVD_ERROR_RELATIVE,viewer)); |
| 394 |
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20 | PetscCall(PetscViewerPopFormat(viewer)); |
| 395 |
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20 | PetscCall(PetscViewerDestroy(&viewer)); |
| 396 | } | ||
| 397 |
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2766 | PetscCall(PetscOptionsCreateViewer(PetscObjectComm((PetscObject)svd),((PetscObject)svd)->options,((PetscObject)svd)->prefix,"-svd_error_norm",&viewer,&format,&flg)); |
| 398 |
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2766 | if (flg) { |
| 399 |
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10 | PetscCall(PetscViewerPushFormat(viewer,format)); |
| 400 |
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10 | PetscCall(SVDErrorView(svd,SVD_ERROR_NORM,viewer)); |
| 401 |
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10 | PetscCall(PetscViewerPopFormat(viewer)); |
| 402 |
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10 | PetscCall(PetscViewerDestroy(&viewer)); |
| 403 | } | ||
| 404 | 2766 | incall = PETSC_FALSE; | |
| 405 |
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2766 | PetscFunctionReturn(PETSC_SUCCESS); |
| 406 | } | ||
| 407 | |||
| 408 | 20 | static PetscErrorCode SVDValuesView_DRAW(SVD svd,PetscViewer viewer) | |
| 409 | { | ||
| 410 | 20 | PetscDraw draw; | |
| 411 | 20 | PetscDrawSP drawsp; | |
| 412 | 20 | PetscReal re,im=0.0; | |
| 413 | 20 | PetscInt i; | |
| 414 | |||
| 415 |
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20 | PetscFunctionBegin; |
| 416 |
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20 | if (!svd->nconv) PetscFunctionReturn(PETSC_SUCCESS); |
| 417 |
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20 | PetscCall(PetscViewerDrawGetDraw(viewer,0,&draw)); |
| 418 |
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20 | PetscCall(PetscDrawSetTitle(draw,"Computed singular values")); |
| 419 |
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20 | PetscCall(PetscDrawSPCreate(draw,1,&drawsp)); |
| 420 |
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180 | for (i=0;i<svd->nconv;i++) { |
| 421 | 160 | re = svd->sigma[svd->perm[i]]; | |
| 422 |
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160 | PetscCall(PetscDrawSPAddPoint(drawsp,&re,&im)); |
| 423 | } | ||
| 424 |
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20 | PetscCall(PetscDrawSPDraw(drawsp,PETSC_TRUE)); |
| 425 |
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20 | PetscCall(PetscDrawSPSave(drawsp)); |
| 426 |
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20 | PetscCall(PetscDrawSPDestroy(&drawsp)); |
| 427 |
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4 | PetscFunctionReturn(PETSC_SUCCESS); |
| 428 | } | ||
| 429 | |||
| 430 | 10 | static PetscErrorCode SVDValuesView_BINARY(SVD svd,PetscViewer viewer) | |
| 431 | { | ||
| 432 | 10 | PetscInt i,k; | |
| 433 | 10 | PetscReal *sv; | |
| 434 | |||
| 435 |
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10 | PetscFunctionBegin; |
| 436 |
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10 | PetscCall(PetscMalloc1(svd->nconv,&sv)); |
| 437 |
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70 | for (i=0;i<svd->nconv;i++) { |
| 438 | 60 | k = svd->perm[i]; | |
| 439 | 60 | sv[i] = svd->sigma[k]; | |
| 440 | } | ||
| 441 |
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10 | PetscCall(PetscViewerBinaryWrite(viewer,sv,svd->nconv,PETSC_REAL)); |
| 442 |
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10 | PetscCall(PetscFree(sv)); |
| 443 |
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2 | PetscFunctionReturn(PETSC_SUCCESS); |
| 444 | } | ||
| 445 | |||
| 446 | #if defined(PETSC_HAVE_HDF5) | ||
| 447 | static PetscErrorCode SVDValuesView_HDF5(SVD svd,PetscViewer viewer) | ||
| 448 | { | ||
| 449 | PetscInt i,k,n,N; | ||
| 450 | PetscMPIInt rank; | ||
| 451 | Vec v; | ||
| 452 | char vname[30]; | ||
| 453 | const char *ename; | ||
| 454 | |||
| 455 | PetscFunctionBegin; | ||
| 456 | PetscCallMPI(MPI_Comm_rank(PetscObjectComm((PetscObject)svd),&rank)); | ||
| 457 | N = svd->nconv; | ||
| 458 | n = rank? 0: N; | ||
| 459 | /* create a vector containing the singular values */ | ||
| 460 | PetscCall(VecCreateMPI(PetscObjectComm((PetscObject)svd),n,N,&v)); | ||
| 461 | PetscCall(PetscObjectGetName((PetscObject)svd,&ename)); | ||
| 462 | PetscCall(PetscSNPrintf(vname,sizeof(vname),"sigma_%s",ename)); | ||
| 463 | PetscCall(PetscObjectSetName((PetscObject)v,vname)); | ||
| 464 | if (!rank) { | ||
| 465 | for (i=0;i<svd->nconv;i++) { | ||
| 466 | k = svd->perm[i]; | ||
| 467 | PetscCall(VecSetValue(v,i,svd->sigma[k],INSERT_VALUES)); | ||
| 468 | } | ||
| 469 | } | ||
| 470 | PetscCall(VecAssemblyBegin(v)); | ||
| 471 | PetscCall(VecAssemblyEnd(v)); | ||
| 472 | PetscCall(VecView(v,viewer)); | ||
| 473 | PetscCall(VecDestroy(&v)); | ||
| 474 | PetscFunctionReturn(PETSC_SUCCESS); | ||
| 475 | } | ||
| 476 | #endif | ||
| 477 | |||
| 478 | 20 | static PetscErrorCode SVDValuesView_ASCII(SVD svd,PetscViewer viewer) | |
| 479 | { | ||
| 480 | 20 | PetscInt i; | |
| 481 | |||
| 482 |
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20 | PetscFunctionBegin; |
| 483 |
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20 | PetscCall(PetscViewerASCIIPrintf(viewer,"Singular values = \n")); |
| 484 |
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140 | for (i=0;i<svd->nconv;i++) PetscCall(PetscViewerASCIIPrintf(viewer," %.5f\n",(double)svd->sigma[svd->perm[i]])); |
| 485 |
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20 | PetscCall(PetscViewerASCIIPrintf(viewer,"\n")); |
| 486 |
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4 | PetscFunctionReturn(PETSC_SUCCESS); |
| 487 | } | ||
| 488 | |||
| 489 | 10 | static PetscErrorCode SVDValuesView_MATLAB(SVD svd,PetscViewer viewer) | |
| 490 | { | ||
| 491 | 10 | PetscInt i; | |
| 492 | 10 | const char *name; | |
| 493 | |||
| 494 |
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10 | PetscFunctionBegin; |
| 495 |
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10 | PetscCall(PetscObjectGetName((PetscObject)svd,&name)); |
| 496 |
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10 | PetscCall(PetscViewerASCIIPrintf(viewer,"Sigma_%s = [\n",name)); |
| 497 |
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45 | for (i=0;i<svd->nconv;i++) PetscCall(PetscViewerASCIIPrintf(viewer,"%18.16e\n",(double)svd->sigma[svd->perm[i]])); |
| 498 |
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10 | PetscCall(PetscViewerASCIIPrintf(viewer,"];\n")); |
| 499 |
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2 | PetscFunctionReturn(PETSC_SUCCESS); |
| 500 | } | ||
| 501 | |||
| 502 | /*@ | ||
| 503 | SVDValuesView - Displays the computed singular values in a viewer. | ||
| 504 | |||
| 505 | Collective | ||
| 506 | |||
| 507 | Input Parameters: | ||
| 508 | + svd - the singular value solver context | ||
| 509 | - viewer - the viewer | ||
| 510 | |||
| 511 | Options Database Key: | ||
| 512 | . -svd_view_values - print computed singular values | ||
| 513 | |||
| 514 | Note: | ||
| 515 | The command-line option listed above admits an optional argument | ||
| 516 | specifying the viewer type and options. For instance, use | ||
| 517 | `-svd_view_values :evals.m:ascii_matlab` to save the values in a file | ||
| 518 | that can be executed in Matlab. | ||
| 519 | See `PetscObjectViewFromOptions()` for more details. | ||
| 520 | |||
| 521 | Level: intermediate | ||
| 522 | |||
| 523 | .seealso: [](ch:svd), `SVDSolve()`, `SVDVectorsView()`, `SVDErrorView()` | ||
| 524 | @*/ | ||
| 525 | 60 | PetscErrorCode SVDValuesView(SVD svd,PetscViewer viewer) | |
| 526 | { | ||
| 527 | 60 | PetscBool isascii,isdraw,isbinary; | |
| 528 | 60 | PetscViewerFormat format; | |
| 529 | #if defined(PETSC_HAVE_HDF5) | ||
| 530 | PetscBool ishdf5; | ||
| 531 | #endif | ||
| 532 | |||
| 533 |
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60 | PetscFunctionBegin; |
| 534 |
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60 | PetscValidHeaderSpecific(svd,SVD_CLASSID,1); |
| 535 |
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60 | if (!viewer) PetscCall(PetscViewerASCIIGetStdout(PetscObjectComm((PetscObject)svd),&viewer)); |
| 536 |
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60 | PetscValidHeaderSpecific(viewer,PETSC_VIEWER_CLASSID,2); |
| 537 |
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60 | PetscCheckSameComm(svd,1,viewer,2); |
| 538 |
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60 | SVDCheckSolved(svd,1); |
| 539 |
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60 | PetscCall(PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERDRAW,&isdraw)); |
| 540 |
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60 | PetscCall(PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERBINARY,&isbinary)); |
| 541 | #if defined(PETSC_HAVE_HDF5) | ||
| 542 | PetscCall(PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERHDF5,&ishdf5)); | ||
| 543 | #endif | ||
| 544 |
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60 | PetscCall(PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&isascii)); |
| 545 |
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60 | if (isdraw) PetscCall(SVDValuesView_DRAW(svd,viewer)); |
| 546 |
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|
40 | else if (isbinary) PetscCall(SVDValuesView_BINARY(svd,viewer)); |
| 547 | #if defined(PETSC_HAVE_HDF5) | ||
| 548 | else if (ishdf5) PetscCall(SVDValuesView_HDF5(svd,viewer)); | ||
| 549 | #endif | ||
| 550 |
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30 | else if (isascii) { |
| 551 |
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30 | PetscCall(PetscViewerGetFormat(viewer,&format)); |
| 552 |
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30 | switch (format) { |
| 553 | 20 | case PETSC_VIEWER_DEFAULT: | |
| 554 | case PETSC_VIEWER_ASCII_INFO: | ||
| 555 | case PETSC_VIEWER_ASCII_INFO_DETAIL: | ||
| 556 |
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20 | PetscCall(SVDValuesView_ASCII(svd,viewer)); |
| 557 | break; | ||
| 558 | 10 | case PETSC_VIEWER_ASCII_MATLAB: | |
| 559 |
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|
10 | PetscCall(SVDValuesView_MATLAB(svd,viewer)); |
| 560 | break; | ||
| 561 | ✗ | default: | |
| 562 | ✗ | PetscCall(PetscInfo(svd,"Unsupported viewer format %s\n",PetscViewerFormats[format])); | |
| 563 | } | ||
| 564 | } | ||
| 565 |
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12 | PetscFunctionReturn(PETSC_SUCCESS); |
| 566 | } | ||
| 567 | |||
| 568 | /*@ | ||
| 569 | SVDValuesViewFromOptions - Processes command line options to determine if/how | ||
| 570 | the computed singular values are to be viewed. | ||
| 571 | |||
| 572 | Collective | ||
| 573 | |||
| 574 | Input Parameter: | ||
| 575 | . svd - the singular value solver context | ||
| 576 | |||
| 577 | Level: developer | ||
| 578 | |||
| 579 | .seealso: [](ch:svd), `SVDValuesView()` | ||
| 580 | @*/ | ||
| 581 | 2766 | PetscErrorCode SVDValuesViewFromOptions(SVD svd) | |
| 582 | { | ||
| 583 | 2766 | PetscViewer viewer; | |
| 584 | 2766 | PetscBool flg; | |
| 585 | 2766 | static PetscBool incall = PETSC_FALSE; | |
| 586 | 2766 | PetscViewerFormat format; | |
| 587 | |||
| 588 |
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2766 | PetscFunctionBegin; |
| 589 |
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2766 | if (incall) PetscFunctionReturn(PETSC_SUCCESS); |
| 590 | 2766 | incall = PETSC_TRUE; | |
| 591 |
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2766 | PetscCall(PetscOptionsCreateViewer(PetscObjectComm((PetscObject)svd),((PetscObject)svd)->options,((PetscObject)svd)->prefix,"-svd_view_values",&viewer,&format,&flg)); |
| 592 |
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2766 | if (flg) { |
| 593 |
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60 | PetscCall(PetscViewerPushFormat(viewer,format)); |
| 594 |
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60 | PetscCall(SVDValuesView(svd,viewer)); |
| 595 |
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60 | PetscCall(PetscViewerPopFormat(viewer)); |
| 596 |
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60 | PetscCall(PetscViewerDestroy(&viewer)); |
| 597 | } | ||
| 598 | 2766 | incall = PETSC_FALSE; | |
| 599 |
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2766 | PetscFunctionReturn(PETSC_SUCCESS); |
| 600 | } | ||
| 601 | |||
| 602 | /*@ | ||
| 603 | SVDVectorsView - Outputs computed singular vectors to a viewer. | ||
| 604 | |||
| 605 | Collective | ||
| 606 | |||
| 607 | Input Parameters: | ||
| 608 | + svd - the singular value solver context | ||
| 609 | - viewer - the viewer | ||
| 610 | |||
| 611 | Options Database Key: | ||
| 612 | . -svd_view_vectors - output singular vectors | ||
| 613 | |||
| 614 | Notes: | ||
| 615 | Right and left singular vectors are interleaved, that is, the vectors are | ||
| 616 | output in the following order\: `V0, U0, V1, U1, V2, U2, ...` | ||
| 617 | |||
| 618 | The command-line option listed above admits an optional argument | ||
| 619 | specifying the viewer type and options. For instance, use | ||
| 620 | `-svd_view_vectors binary:svecs.bin` to save the vectors in a binary file. | ||
| 621 | See `PetscObjectViewFromOptions()` for more details. | ||
| 622 | |||
| 623 | Level: intermediate | ||
| 624 | |||
| 625 | .seealso: [](ch:svd), `SVDSolve()`, `SVDValuesView()`, `SVDErrorView()` | ||
| 626 | @*/ | ||
| 627 | 10 | PetscErrorCode SVDVectorsView(SVD svd,PetscViewer viewer) | |
| 628 | { | ||
| 629 | 10 | PetscInt i,k; | |
| 630 | 10 | Vec x; | |
| 631 | 10 | char vname[30]; | |
| 632 | 10 | const char *ename; | |
| 633 | |||
| 634 |
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10 | PetscFunctionBegin; |
| 635 |
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10 | PetscValidHeaderSpecific(svd,SVD_CLASSID,1); |
| 636 |
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10 | if (!viewer) PetscCall(PetscViewerASCIIGetStdout(PetscObjectComm((PetscObject)svd),&viewer)); |
| 637 |
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10 | PetscValidHeaderSpecific(viewer,PETSC_VIEWER_CLASSID,2); |
| 638 |
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10 | PetscCheckSameComm(svd,1,viewer,2); |
| 639 |
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10 | SVDCheckSolved(svd,1); |
| 640 |
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10 | if (svd->nconv) { |
| 641 |
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10 | PetscCall(PetscObjectGetName((PetscObject)svd,&ename)); |
| 642 |
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10 | PetscCall(SVDComputeVectors(svd)); |
| 643 |
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40 | for (i=0;i<svd->nconv;i++) { |
| 644 | 30 | k = svd->perm[i]; | |
| 645 |
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30 | PetscCall(PetscSNPrintf(vname,sizeof(vname),"V%" PetscInt_FMT "_%s",i,ename)); |
| 646 |
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30 | PetscCall(BVGetColumn(svd->V,k,&x)); |
| 647 |
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30 | PetscCall(PetscObjectSetName((PetscObject)x,vname)); |
| 648 |
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30 | PetscCall(VecView(x,viewer)); |
| 649 |
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30 | PetscCall(BVRestoreColumn(svd->V,k,&x)); |
| 650 |
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30 | PetscCall(PetscSNPrintf(vname,sizeof(vname),"U%" PetscInt_FMT "_%s",i,ename)); |
| 651 |
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30 | PetscCall(BVGetColumn(svd->U,k,&x)); |
| 652 |
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30 | PetscCall(PetscObjectSetName((PetscObject)x,vname)); |
| 653 |
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30 | PetscCall(VecView(x,viewer)); |
| 654 |
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30 | PetscCall(BVRestoreColumn(svd->U,k,&x)); |
| 655 | } | ||
| 656 | } | ||
| 657 |
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2 | PetscFunctionReturn(PETSC_SUCCESS); |
| 658 | } | ||
| 659 | |||
| 660 | /*@ | ||
| 661 | SVDVectorsViewFromOptions - Processes command line options to determine if/how | ||
| 662 | the computed singular vectors are to be viewed. | ||
| 663 | |||
| 664 | Collective | ||
| 665 | |||
| 666 | Input Parameter: | ||
| 667 | . svd - the singular value solver context | ||
| 668 | |||
| 669 | Level: developer | ||
| 670 | |||
| 671 | .seealso: [](ch:svd), `SVDVectorsView()` | ||
| 672 | @*/ | ||
| 673 | 2766 | PetscErrorCode SVDVectorsViewFromOptions(SVD svd) | |
| 674 | { | ||
| 675 | 2766 | PetscViewer viewer; | |
| 676 | 2766 | PetscBool flg = PETSC_FALSE; | |
| 677 | 2766 | static PetscBool incall = PETSC_FALSE; | |
| 678 | 2766 | PetscViewerFormat format; | |
| 679 | |||
| 680 |
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2766 | PetscFunctionBegin; |
| 681 |
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2766 | if (incall) PetscFunctionReturn(PETSC_SUCCESS); |
| 682 | 2766 | incall = PETSC_TRUE; | |
| 683 |
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2766 | PetscCall(PetscOptionsCreateViewer(PetscObjectComm((PetscObject)svd),((PetscObject)svd)->options,((PetscObject)svd)->prefix,"-svd_view_vectors",&viewer,&format,&flg)); |
| 684 |
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2766 | if (flg) { |
| 685 |
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10 | PetscCall(PetscViewerPushFormat(viewer,format)); |
| 686 |
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10 | PetscCall(SVDVectorsView(svd,viewer)); |
| 687 |
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10 | PetscCall(PetscViewerPopFormat(viewer)); |
| 688 |
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10 | PetscCall(PetscViewerDestroy(&viewer)); |
| 689 | } | ||
| 690 | 2766 | incall = PETSC_FALSE; | |
| 691 |
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2766 | PetscFunctionReturn(PETSC_SUCCESS); |
| 692 | } | ||
| 693 |