Actual source code: test13.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 BV operations using internal buffer instead of array arguments.\n\n";
13: #include <slepcbv.h>
15: int main(int argc,char **argv)
16: {
18: Vec t,v,z;
19: BV X;
20: PetscInt i,j,n=10,k=5,l=3;
21: PetscReal nrm;
22: PetscViewer view;
23: PetscBool verbose;
25: SlepcInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr;
26: PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL);
27: PetscOptionsGetInt(NULL,NULL,"-k",&k,NULL);
28: PetscOptionsGetInt(NULL,NULL,"-l",&l,NULL);
29: PetscOptionsHasName(NULL,NULL,"-verbose",&verbose);
30: PetscPrintf(PETSC_COMM_WORLD,"Test BV with %D columns of dimension %D.\n",k,n);
32: /* Create template vector */
33: VecCreate(PETSC_COMM_WORLD,&t);
34: VecSetSizes(t,PETSC_DECIDE,n);
35: VecSetFromOptions(t);
37: /* Create BV object X */
38: BVCreate(PETSC_COMM_WORLD,&X);
39: PetscObjectSetName((PetscObject)X,"X");
40: BVSetSizesFromVec(X,t,k);
41: BVSetFromOptions(X);
43: /* Set up viewer */
44: PetscViewerASCIIGetStdout(PETSC_COMM_WORLD,&view);
45: if (verbose) {
46: PetscViewerPushFormat(view,PETSC_VIEWER_ASCII_MATLAB);
47: }
49: /* Fill X entries */
50: for (j=0;j<k;j++) {
51: BVGetColumn(X,j,&v);
52: VecSet(v,0.0);
53: for (i=0;i<4;i++) {
54: if (i+j<n) {
55: VecSetValue(v,i+j,(PetscScalar)(3*i+j-2),INSERT_VALUES);
56: }
57: }
58: VecAssemblyBegin(v);
59: VecAssemblyEnd(v);
60: BVRestoreColumn(X,j,&v);
61: }
62: if (verbose) {
63: BVView(X,view);
64: }
66: /* Test BVDotColumn */
67: BVDotColumn(X,2,NULL);
68: if (verbose) {
69: PetscPrintf(PETSC_COMM_WORLD,"After BVDotColumn - - - - - - -\n");
70: BVGetBufferVec(X,&z);
71: VecView(z,view);
72: }
73: /* Test BVMultColumn */
74: BVMultColumn(X,-1.0,1.0,2,NULL);
75: if (verbose) {
76: PetscPrintf(PETSC_COMM_WORLD,"After BVMultColumn - - - - - - - - -\n");
77: BVView(X,view);
78: }
80: BVNorm(X,NORM_FROBENIUS,&nrm);
81: PetscPrintf(PETSC_COMM_WORLD,"Frobenius Norm or X = %g\n",(double)nrm);
83: BVDestroy(&X);
84: VecDestroy(&t);
85: SlepcFinalize();
86: return ierr;
87: }
89: /*TEST
91: test:
92: suffix: 1
93: nsize: 1
94: args: -bv_type {{vecs contiguous svec mat}shared output}
95: output_file: output/test13_1.out
97: test:
98: suffix: 1_cuda
99: nsize: 1
100: args: -bv_type svec -vec_type cuda
101: requires: cuda
102: output_file: output/test13_1.out
104: TEST*/