GCC Code Coverage Report

Directory: ./
File: src/eps/impls/external/elemental/elemental.cxx
Date: 2025-10-04 04:19:13
Exec Total Coverage
Lines: 78 80 97.5%
Functions: 5 5 100.0%
Branches: 61 146 41.8%
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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 This file implements a wrapper to eigensolvers in Elemental.
12 */
13
14 #include <slepc/private/epsimpl.h> /*I "slepceps.h" I*/
15 #include <petsc/private/petscelemental.h>
16
17 typedef struct {
18 Mat Ae,Be; /* converted matrices */
19 } EPS_Elemental;
20
21 19 static PetscErrorCode EPSSetUp_Elemental(EPS eps)
22 {
23 19 EPS_Elemental *ctx = (EPS_Elemental*)eps->data;
24 19 Mat A,B;
25 19 PetscInt nmat;
26 19 PetscBool isshift;
27 19 PetscScalar shift;
28
29 19 PetscFunctionBegin;
30
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 19 EPSCheckHermitianDefinite(eps);
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 19 EPSCheckNotStructured(eps);
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 19 PetscCall(PetscObjectTypeCompare((PetscObject)eps->st,STSHIFT,&isshift));
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 19 PetscCheck(isshift,PetscObjectComm((PetscObject)eps),PETSC_ERR_SUP,"This solver does not support spectral transformations");
34
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 19 if (eps->nev==0) eps->nev = 1;
35 19 eps->ncv = eps->n;
36
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 19 if (eps->mpd!=PETSC_DETERMINE) PetscCall(PetscInfo(eps,"Warning: parameter mpd ignored\n"));
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 19 if (eps->max_it==PETSC_DETERMINE) eps->max_it = 1;
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 19 if (!eps->which) PetscCall(EPSSetWhichEigenpairs_Default(eps));
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 19 PetscCheck(eps->which!=EPS_ALL || eps->inta==eps->intb,PetscObjectComm((PetscObject)eps),PETSC_ERR_SUP,"This solver does not support interval computation");
40
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 19 EPSCheckUnsupported(eps,EPS_FEATURE_BALANCE | EPS_FEATURE_ARBITRARY | EPS_FEATURE_REGION);
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 19 EPSCheckIgnored(eps,EPS_FEATURE_EXTRACTION | EPS_FEATURE_CONVERGENCE | EPS_FEATURE_STOPPING);
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 19 PetscCall(EPSAllocateSolution(eps,0));
43
44 /* convert matrices */
45
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 19 PetscCall(MatDestroy(&ctx->Ae));
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 19 PetscCall(MatDestroy(&ctx->Be));
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 19 PetscCall(STGetNumMatrices(eps->st,&nmat));
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 19 PetscCall(STGetMatrix(eps->st,0,&A));
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 19 PetscCall(MatConvert(A,MATELEMENTAL,MAT_INITIAL_MATRIX,&ctx->Ae));
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 19 if (nmat>1) {
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 6 PetscCall(STGetMatrix(eps->st,1,&B));
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 6 PetscCall(MatConvert(B,MATELEMENTAL,MAT_INITIAL_MATRIX,&ctx->Be));
53 }
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 19 PetscCall(STGetShift(eps->st,&shift));
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 19 if (shift != 0.0) {
56 ✗ if (nmat>1) PetscCall(MatAXPY(ctx->Ae,-shift,ctx->Be,SAME_NONZERO_PATTERN));
57 ✗ else PetscCall(MatShift(ctx->Ae,-shift));
58 }
59 PetscFunctionReturn(PETSC_SUCCESS);
60 }
61
62 19 static PetscErrorCode EPSSolve_Elemental(EPS eps)
63 {
64 19 EPS_Elemental *ctx = (EPS_Elemental*)eps->data;
65 19 Mat A = ctx->Ae,B = ctx->Be,Q,V;
66 19 Mat_Elemental *a = (Mat_Elemental*)A->data,*b,*q;
67 19 PetscInt i,rrank,ridx,erow;
68
69 19 PetscFunctionBegin;
70 19 El::DistMatrix<PetscReal,El::VR,El::STAR> w(*a->grid);
71
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 19 PetscCall(MatDuplicate(A,MAT_DO_NOT_COPY_VALUES,&Q));
72 19 q = (Mat_Elemental*)Q->data;
73
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 19 if (B) {
75 6 b = (Mat_Elemental*)B->data;
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 6 El::HermitianGenDefEig(El::AXBX,El::LOWER,*a->emat,*b->emat,w,*q->emat);
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 13 } else El::HermitianEig(El::LOWER,*a->emat,w,*q->emat);
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 3405 for (i=0;i<eps->ncv;i++) {
80 3386 P2RO(A,0,i,&rrank,&ridx);
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 3386 RO2E(A,0,rrank,ridx,&erow);
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 3386 eps->eigr[i] = w.Get(erow,0);
83 }
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 19 PetscCall(BVGetMat(eps->V,&V));
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 19 PetscCall(MatConvert(Q,MATDENSE,MAT_REUSE_MATRIX,&V));
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 19 PetscCall(BVRestoreMat(eps->V,&V));
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 19 PetscCall(MatDestroy(&Q));
88
89 19 eps->nconv = eps->ncv;
90 19 eps->its = 1;
91 19 eps->reason = EPS_CONVERGED_TOL;
92 19 PetscFunctionReturn(PETSC_SUCCESS);
93 19 }
94
95 13 static PetscErrorCode EPSDestroy_Elemental(EPS eps)
96 {
97 13 PetscFunctionBegin;
98
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 13 PetscCall(PetscFree(eps->data));
99 PetscFunctionReturn(PETSC_SUCCESS);
100 }
101
102 13 static PetscErrorCode EPSReset_Elemental(EPS eps)
103 {
104 13 EPS_Elemental *ctx = (EPS_Elemental*)eps->data;
105
106 13 PetscFunctionBegin;
107
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 13 PetscCall(MatDestroy(&ctx->Ae));
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 13 PetscCall(MatDestroy(&ctx->Be));
109 PetscFunctionReturn(PETSC_SUCCESS);
110 }
111
112 13 SLEPC_EXTERN PetscErrorCode EPSCreate_Elemental(EPS eps)
113 {
114 13 EPS_Elemental *ctx;
115
116 13 PetscFunctionBegin;
117
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 13 PetscCall(PetscNew(&ctx));
118 13 eps->data = (void*)ctx;
119
120 13 eps->categ = EPS_CATEGORY_OTHER;
121
122 13 eps->ops->solve = EPSSolve_Elemental;
123 13 eps->ops->setup = EPSSetUp_Elemental;
124 13 eps->ops->setupsort = EPSSetUpSort_Basic;
125 13 eps->ops->destroy = EPSDestroy_Elemental;
126 13 eps->ops->reset = EPSReset_Elemental;
127 13 eps->ops->backtransform = EPSBackTransform_Default;
128 13 eps->ops->setdefaultst = EPSSetDefaultST_NoFactor;
129 13 PetscFunctionReturn(PETSC_SUCCESS);
130 }
131