Actual source code: test5.c
slepc-3.11.2 2019-07-30
1: /*
2: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
3: SLEPc - Scalable Library for Eigenvalue Problem Computations
4: Copyright (c) 2002-2019, Universitat Politecnica de Valencia, Spain
6: This file is part of SLEPc.
7: SLEPc is distributed under a 2-clause BSD license (see LICENSE).
8: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
9: */
11: static char help[] = "Test PEP view and monitor functionality.\n\n";
13: #include <slepcpep.h>
15: int main(int argc,char **argv)
16: {
17: Mat A[3];
18: PEP pep;
19: PetscInt n=6,Istart,Iend,i;
22: SlepcInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr;
23: PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL);
24: PetscPrintf(PETSC_COMM_WORLD,"\nPEP of diagonal problem, n=%D\n\n",n);
26: /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
27: Generate the matrices
28: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
29: MatCreate(PETSC_COMM_WORLD,&A[0]);
30: MatSetSizes(A[0],PETSC_DECIDE,PETSC_DECIDE,n,n);
31: MatSetFromOptions(A[0]);
32: MatSetUp(A[0]);
33: MatGetOwnershipRange(A[0],&Istart,&Iend);
34: for (i=Istart;i<Iend;i++) {
35: MatSetValue(A[0],i,i,i+1,INSERT_VALUES);
36: }
37: MatAssemblyBegin(A[0],MAT_FINAL_ASSEMBLY);
38: MatAssemblyEnd(A[0],MAT_FINAL_ASSEMBLY);
40: MatCreate(PETSC_COMM_WORLD,&A[1]);
41: MatSetSizes(A[1],PETSC_DECIDE,PETSC_DECIDE,n,n);
42: MatSetFromOptions(A[1]);
43: MatSetUp(A[1]);
44: for (i=Istart;i<Iend;i++) {
45: MatSetValue(A[1],i,i,-1.5,INSERT_VALUES);
46: }
47: MatAssemblyBegin(A[1],MAT_FINAL_ASSEMBLY);
48: MatAssemblyEnd(A[1],MAT_FINAL_ASSEMBLY);
50: MatCreate(PETSC_COMM_WORLD,&A[2]);
51: MatSetSizes(A[2],PETSC_DECIDE,PETSC_DECIDE,n,n);
52: MatSetFromOptions(A[2]);
53: MatSetUp(A[2]);
54: for (i=Istart;i<Iend;i++) {
55: MatSetValue(A[2],i,i,-1.0/(i+1),INSERT_VALUES);
56: }
57: MatAssemblyBegin(A[2],MAT_FINAL_ASSEMBLY);
58: MatAssemblyEnd(A[2],MAT_FINAL_ASSEMBLY);
60: /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
61: Create the PEP solver
62: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
63: PEPCreate(PETSC_COMM_WORLD,&pep);
64: PetscObjectSetName((PetscObject)pep,"pep");
65: PEPSetOperators(pep,3,A);
66: PEPSetFromOptions(pep);
68: /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
69: Solve the eigensystem and display solution
70: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
71: PEPSolve(pep);
72: PEPErrorView(pep,PEP_ERROR_RELATIVE,NULL);
73: PEPDestroy(&pep);
74: MatDestroy(&A[0]);
75: MatDestroy(&A[1]);
76: MatDestroy(&A[2]);
77: SlepcFinalize();
78: return ierr;
79: }
81: /*TEST
83: test:
84: suffix: 1
85: args: -pep_error_backward ::ascii_info_detail -pep_largest_real -pep_view_values -pep_monitor_conv -pep_error_absolute ::ascii_matlab -pep_monitor_all -pep_converged_reason -pep_view
86: requires: !complex !single
87: filter: grep -v "tolerance" | grep -v "problem type" | sed -e "s/[0-9]\.[0-9]*e-\([0-9]*\)/removed/g"
89: TEST*/