GCC Code Coverage Report

Directory: ./
File: src/eps/tests/test45.c
Date: 2025-11-19 04:19:03
Exec Total Coverage
Lines: 42 42 100.0%
Functions: 1 1 100.0%
Branches: 40 72 55.6%
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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 static char help[] = "Test interface to external package ChASE.\n\n"
12 "This is based on ex3.c. The command line options are:\n"
13 " -n <n>, where <n> = number of grid subdivisions in x dimension.\n"
14 " -m <m>, where <m> = number of grid subdivisions in y dimension.\n\n";
15
16 #include <slepceps.h>
17
18 6 int main(int argc,char **argv)
19 {
20 6 Mat A; /* matrix */
21 6 EPS eps; /* eigenproblem solver context */
22 6 PetscInt N,n=35,m,Istart,Iend,II,i,j,deg;
23 6 PetscBool opt,flag;
24
25 6 PetscFunctionBeginUser;
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 6 PetscCall(SlepcInitialize(&argc,&argv,NULL,help));
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 6 PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL));
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 6 PetscCall(PetscOptionsGetInt(NULL,NULL,"-m",&m,&flag));
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 6 if (!flag) m=n;
31 6 N = n*m;
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 6 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"\nStandard eigenproblem with ChASE, N=%" PetscInt_FMT " (%" PetscInt_FMT "x%" PetscInt_FMT " grid)\n\n",N,n,m));
33
34 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
35 Compute the matrix that defines the eigensystem, Ax=kx
36 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
37
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 6 PetscCall(MatCreate(PETSC_COMM_WORLD,&A));
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 6 PetscCall(MatSetSizes(A,PETSC_DECIDE,PETSC_DECIDE,N,N));
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 6 PetscCall(MatSetFromOptions(A));
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 6 PetscCall(MatGetOwnershipRange(A,&Istart,&Iend));
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 4906 for (II=Istart;II<Iend;II++) {
44 4900 i = II/n; j = II-i*n;
45
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 4900 if (i>0) PetscCall(MatSetValue(A,II,II-n,-1.0,INSERT_VALUES));
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 4900 if (i<m-1) PetscCall(MatSetValue(A,II,II+n,-1.0,INSERT_VALUES));
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 4900 if (j>0) PetscCall(MatSetValue(A,II,II-1,-1.0,INSERT_VALUES));
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 4900 if (j<n-1) PetscCall(MatSetValue(A,II,II+1,-1.0,INSERT_VALUES));
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 4900 PetscCall(MatSetValue(A,II,II,4.0,INSERT_VALUES));
50 }
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 6 PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY));
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 6 PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY));
54
55 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
56 Create the eigensolver and set various options
57 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
58
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 6 PetscCall(EPSCreate(PETSC_COMM_WORLD,&eps));
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 6 PetscCall(EPSSetOperators(eps,A,NULL));
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 6 PetscCall(EPSSetProblemType(eps,EPS_HEP));
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 6 PetscCall(EPSSetType(eps,EPSCHASE));
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 6 PetscCall(EPSSetDimensions(eps,6,PETSC_DETERMINE,PETSC_DETERMINE));
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 6 PetscCall(EPSSetWhichEigenpairs(eps,EPS_SMALLEST_REAL));
65 6 deg = 20;
66 6 opt = PETSC_TRUE;
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 6 PetscCall(EPSCHASESetDegree(eps,deg,opt));
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 6 PetscCall(EPSSetFromOptions(eps));
69
70 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
71 Compute eigenvalues and display info
72 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
73
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 6 PetscCall(EPSSolve(eps));
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 6 PetscCall(EPSCHASEGetDegree(eps,&deg,&opt));
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 6 PetscCall(PetscPrintf(PETSC_COMM_WORLD," ChASE: using degree %" PetscInt_FMT ", optimization %s\n",deg,PetscBools[opt]));
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 6 PetscCall(EPSErrorView(eps,EPS_ERROR_ABSOLUTE,NULL));
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 6 PetscCall(EPSDestroy(&eps));
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 6 PetscCall(MatDestroy(&A));
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 6 PetscCall(SlepcFinalize());
83 return 0;
84 }
85
86 /*TEST
87
88 build:
89 requires: chase
90
91 testset:
92 requires: chase
93 output_file: output/test45_1.out
94 test:
95 suffix: 1
96 test:
97 suffix: 2
98 args: -mat_scalapack_grid_height 2
99 nsize: 2
100
101 TEST*/
102