GCC Code Coverage Report

Directory: ./
File: src/eps/impls/external/scalapack/scalapack.c
Date: 2025-10-04 04:19:13
Exec Total Coverage
Lines: 114 116 98.3%
Functions: 5 5 100.0%
Branches: 84 200 42.0%
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 This file implements a wrapper to eigensolvers in ScaLAPACK.
12 */
13
14 #include <slepc/private/epsimpl.h> /*I "slepceps.h" I*/
15 #include <slepc/private/slepcscalapack.h>
16
17 typedef struct {
18 Mat As,Bs; /* converted matrices */
19 } EPS_ScaLAPACK;
20
21 44 static PetscErrorCode EPSSetUp_ScaLAPACK(EPS eps)
22 {
23 44 EPS_ScaLAPACK *ctx = (EPS_ScaLAPACK*)eps->data;
24 44 Mat A,B;
25 44 PetscInt nmat;
26 44 PetscBool isshift;
27 44 PetscScalar shift;
28
29 44 PetscFunctionBegin;
30
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 44 EPSCheckHermitianDefinite(eps);
31
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 44 EPSCheckNotStructured(eps);
32
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 44 PetscCall(PetscObjectTypeCompare((PetscObject)eps->st,STSHIFT,&isshift));
33
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 44 PetscCheck(isshift,PetscObjectComm((PetscObject)eps),PETSC_ERR_SUP,"This solver does not support spectral transformations");
34
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 44 if (eps->nev==0) eps->nev = 1;
35 44 eps->ncv = eps->n;
36
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 44 if (eps->mpd!=PETSC_DETERMINE) PetscCall(PetscInfo(eps,"Warning: parameter mpd ignored\n"));
37
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 44 if (eps->max_it==PETSC_DETERMINE) eps->max_it = 1;
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 44 if (!eps->which) PetscCall(EPSSetWhichEigenpairs_Default(eps));
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 44 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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 44 EPSCheckUnsupported(eps,EPS_FEATURE_BALANCE | EPS_FEATURE_ARBITRARY | EPS_FEATURE_REGION);
41
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 44 EPSCheckIgnored(eps,EPS_FEATURE_EXTRACTION | EPS_FEATURE_CONVERGENCE | EPS_FEATURE_STOPPING);
42
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 44 PetscCall(EPSAllocateSolution(eps,0));
43
44 /* convert matrices */
45
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 44 PetscCall(MatDestroy(&ctx->As));
46
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 44 PetscCall(MatDestroy(&ctx->Bs));
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 44 PetscCall(STGetNumMatrices(eps->st,&nmat));
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 44 PetscCall(STGetMatrix(eps->st,0,&A));
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 44 PetscCall(MatConvert(A,MATSCALAPACK,MAT_INITIAL_MATRIX,&ctx->As));
50
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 44 if (nmat>1) {
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 24 PetscCall(STGetMatrix(eps->st,1,&B));
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 24 PetscCall(MatConvert(B,MATSCALAPACK,MAT_INITIAL_MATRIX,&ctx->Bs));
53 }
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 44 PetscCall(STGetShift(eps->st,&shift));
55
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 44 if (shift != 0.0) {
56 ✗ if (nmat>1) PetscCall(MatAXPY(ctx->As,-shift,ctx->Bs,SAME_NONZERO_PATTERN));
57 ✗ else PetscCall(MatShift(ctx->As,-shift));
58 }
59 PetscFunctionReturn(PETSC_SUCCESS);
60 }
61
62 44 static PetscErrorCode EPSSolve_ScaLAPACK(EPS eps)
63 {
64 44 EPS_ScaLAPACK *ctx = (EPS_ScaLAPACK*)eps->data;
65 44 Mat A = ctx->As,B = ctx->Bs,Q,V;
66 44 Mat_ScaLAPACK *a = (Mat_ScaLAPACK*)A->data,*b,*q;
67 44 PetscReal rdummy=0.0,abstol=0.0,*gap=NULL,orfac=-1.0,*w = eps->errest; /* used to store real eigenvalues */
68 44 PetscScalar *work,minlwork[3];
69 44 PetscBLASInt i,m,info,idummy=0,lwork=-1,liwork=-1,minliwork,*iwork,*ifail=NULL,*iclustr=NULL,one=1;
70 #if defined(PETSC_USE_COMPLEX)
71 11 PetscReal *rwork,minlrwork[3];
72 11 PetscBLASInt lrwork=-1;
73 #endif
74
75 44 PetscFunctionBegin;
76
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 44 PetscCall(MatDuplicate(A,MAT_DO_NOT_COPY_VALUES,&Q));
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 44 PetscCall(PetscFPTrapPush(PETSC_FP_TRAP_OFF));
78 44 q = (Mat_ScaLAPACK*)Q->data;
79
80
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 44 if (B) {
81
82 24 b = (Mat_ScaLAPACK*)B->data;
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 24 PetscCall(PetscMalloc3(a->grid->nprow*a->grid->npcol,&gap,a->N,&ifail,2*a->grid->nprow*a->grid->npcol,&iclustr));
84 #if !defined(PETSC_USE_COMPLEX)
85 /* allocate workspace */
86
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 18 PetscCallBLAS("SCALAPACKsygvx",SCALAPACKsygvx_(&one,"V","A","L",&a->N,a->loc,&one,&one,a->desc,b->loc,&one,&one,b->desc,&rdummy,&rdummy,&idummy,&idummy,&abstol,&m,&idummy,w,&orfac,q->loc,&one,&one,q->desc,minlwork,&lwork,&minliwork,&liwork,ifail,iclustr,gap,&info));
87
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 18 PetscCheckScaLapackInfo("sygvx",info);
88
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 18 PetscCall(PetscBLASIntCast((PetscInt)minlwork[0],&lwork));
89 18 liwork = minliwork;
90 /* call computational routine */
91
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 18 PetscCall(PetscMalloc2(lwork,&work,liwork,&iwork));
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 18 PetscCallBLAS("SCALAPACKsygvx",SCALAPACKsygvx_(&one,"V","A","L",&a->N,a->loc,&one,&one,a->desc,b->loc,&one,&one,b->desc,&rdummy,&rdummy,&idummy,&idummy,&abstol,&m,&idummy,w,&orfac,q->loc,&one,&one,q->desc,work,&lwork,iwork,&liwork,ifail,iclustr,gap,&info));
93
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 18 PetscCheckScaLapackInfo("sygvx",info);
94
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 18 PetscCall(PetscFree2(work,iwork));
95 #else
96 /* allocate workspace */
97
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 6 PetscCallBLAS("SCALAPACKsygvx",SCALAPACKsygvx_(&one,"V","A","L",&a->N,a->loc,&one,&one,a->desc,b->loc,&one,&one,b->desc,&rdummy,&rdummy,&idummy,&idummy,&abstol,&m,&idummy,w,&orfac,q->loc,&one,&one,q->desc,minlwork,&lwork,minlrwork,&lrwork,&minliwork,&liwork,ifail,iclustr,gap,&info));
98
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 6 PetscCheckScaLapackInfo("sygvx",info);
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 6 PetscCall(PetscBLASIntCast((PetscInt)PetscRealPart(minlwork[0]),&lwork));
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 6 PetscCall(PetscBLASIntCast((PetscInt)minlrwork[0],&lrwork));
101 6 lrwork += a->N*a->N;
102 6 liwork = minliwork;
103 /* call computational routine */
104
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 6 PetscCall(PetscMalloc3(lwork,&work,lrwork,&rwork,liwork,&iwork));
105
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 6 PetscCallBLAS("SCALAPACKsygvx",SCALAPACKsygvx_(&one,"V","A","L",&a->N,a->loc,&one,&one,a->desc,b->loc,&one,&one,b->desc,&rdummy,&rdummy,&idummy,&idummy,&abstol,&m,&idummy,w,&orfac,q->loc,&one,&one,q->desc,work,&lwork,rwork,&lrwork,iwork,&liwork,ifail,iclustr,gap,&info));
106
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 6 PetscCheckScaLapackInfo("sygvx",info);
107
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 6 PetscCall(PetscFree3(work,rwork,iwork));
108 #endif
109
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 24 PetscCall(PetscFree3(gap,ifail,iclustr));
110
111 } else {
112
113 #if !defined(PETSC_USE_COMPLEX)
114 /* allocate workspace */
115
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 15 PetscCallBLAS("SCALAPACKsyev",SCALAPACKsyev_("V","L",&a->N,a->loc,&one,&one,a->desc,w,q->loc,&one,&one,q->desc,minlwork,&lwork,&info));
116
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 15 PetscCheckScaLapackInfo("syev",info);
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 15 PetscCall(PetscBLASIntCast((PetscInt)minlwork[0],&lwork));
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 15 PetscCall(PetscMalloc1(lwork,&work));
119 /* call computational routine */
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 15 PetscCallBLAS("SCALAPACKsyev",SCALAPACKsyev_("V","L",&a->N,a->loc,&one,&one,a->desc,w,q->loc,&one,&one,q->desc,work,&lwork,&info));
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 15 PetscCheckScaLapackInfo("syev",info);
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 15 PetscCall(PetscFree(work));
123 #else
124 /* allocate workspace */
125
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 5 PetscCallBLAS("SCALAPACKsyev",SCALAPACKsyev_("V","L",&a->N,a->loc,&one,&one,a->desc,w,q->loc,&one,&one,q->desc,minlwork,&lwork,minlrwork,&lrwork,&info));
126
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 5 PetscCheckScaLapackInfo("syev",info);
127
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 5 PetscCall(PetscBLASIntCast((PetscInt)PetscRealPart(minlwork[0]),&lwork));
128 5 lrwork = 4*a->N; /* PetscCall(PetscBLASIntCast((PetscInt)minlrwork[0],&lrwork)); */
129
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 5 PetscCall(PetscMalloc2(lwork,&work,lrwork,&rwork));
130 /* call computational routine */
131
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 5 PetscCallBLAS("SCALAPACKsyev",SCALAPACKsyev_("V","L",&a->N,a->loc,&one,&one,a->desc,w,q->loc,&one,&one,q->desc,work,&lwork,rwork,&lrwork,&info));
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 5 PetscCheckScaLapackInfo("syev",info);
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 5 PetscCall(PetscFree2(work,rwork));
134 #endif
135
136 }
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 44 PetscCall(PetscFPTrapPop());
138
139
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 8420 for (i=0;i<eps->ncv;i++) {
140 8376 eps->eigr[i] = eps->errest[i];
141 8376 eps->errest[i] = PETSC_MACHINE_EPSILON;
142 }
143
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 44 PetscCall(BVGetMat(eps->V,&V));
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 44 PetscCall(MatConvert(Q,MATDENSE,MAT_REUSE_MATRIX,&V));
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 44 PetscCall(BVRestoreMat(eps->V,&V));
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 44 PetscCall(MatDestroy(&Q));
148
149 44 eps->nconv = eps->ncv;
150 44 eps->its = 1;
151 44 eps->reason = EPS_CONVERGED_TOL;
152 44 PetscFunctionReturn(PETSC_SUCCESS);
153 }
154
155 32 static PetscErrorCode EPSDestroy_ScaLAPACK(EPS eps)
156 {
157 32 PetscFunctionBegin;
158
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 32 PetscCall(PetscFree(eps->data));
159 PetscFunctionReturn(PETSC_SUCCESS);
160 }
161
162 32 static PetscErrorCode EPSReset_ScaLAPACK(EPS eps)
163 {
164 32 EPS_ScaLAPACK *ctx = (EPS_ScaLAPACK*)eps->data;
165
166 32 PetscFunctionBegin;
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 32 PetscCall(MatDestroy(&ctx->As));
168
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 32 PetscCall(MatDestroy(&ctx->Bs));
169 PetscFunctionReturn(PETSC_SUCCESS);
170 }
171
172 32 SLEPC_EXTERN PetscErrorCode EPSCreate_ScaLAPACK(EPS eps)
173 {
174 32 EPS_ScaLAPACK *ctx;
175
176 32 PetscFunctionBegin;
177
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 32 PetscCall(PetscNew(&ctx));
178 32 eps->data = (void*)ctx;
179
180 32 eps->categ = EPS_CATEGORY_OTHER;
181
182 32 eps->ops->solve = EPSSolve_ScaLAPACK;
183 32 eps->ops->setup = EPSSetUp_ScaLAPACK;
184 32 eps->ops->setupsort = EPSSetUpSort_Basic;
185 32 eps->ops->destroy = EPSDestroy_ScaLAPACK;
186 32 eps->ops->reset = EPSReset_ScaLAPACK;
187 32 eps->ops->backtransform = EPSBackTransform_Default;
188 32 eps->ops->setdefaultst = EPSSetDefaultST_NoFactor;
189 32 PetscFunctionReturn(PETSC_SUCCESS);
190 }
191