Actual source code: ex138.c
2: static char help[] = "Tests MatGetColumnNorms()/Sums()/Means() for matrix read from file.";
4: #include <petscmat.h>
6: int main(int argc,char **args)
7: {
8: Mat A;
10: PetscReal *reductions_real;
11: PetscScalar *reductions_scalar;
12: char file[PETSC_MAX_PATH_LEN];
13: PetscBool flg;
14: PetscViewer fd;
15: PetscInt n;
16: PetscMPIInt rank;
18: PetscInitialize(&argc,&args,(char*)0,help);if (ierr) return ierr;
19: MPI_Comm_rank(PETSC_COMM_WORLD,&rank);
20: PetscOptionsGetString(NULL,NULL,"-f",file,sizeof(file),&flg);
21: if (!flg) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_USER,"Must indicate binary file with the -f option");
22: PetscViewerBinaryOpen(PETSC_COMM_WORLD,file,FILE_MODE_READ,&fd);
23: MatCreate(PETSC_COMM_WORLD,&A);
24: MatSetFromOptions(A);
25: MatLoad(A,fd);
26: PetscViewerDestroy(&fd);
28: MatGetSize(A,NULL,&n);
29: PetscMalloc1(n,&reductions_real);
30: PetscMalloc1(n,&reductions_scalar);
32: MatGetColumnNorms(A,NORM_2,reductions_real);
33: if (rank == 0) {
34: PetscPrintf(PETSC_COMM_SELF,"NORM_2:\n");
35: PetscRealView(n,reductions_real,PETSC_VIEWER_STDOUT_SELF);
36: }
38: MatGetColumnNorms(A,NORM_1,reductions_real);
39: if (rank == 0) {
40: PetscPrintf(PETSC_COMM_SELF,"NORM_1:\n");
41: PetscRealView(n,reductions_real,PETSC_VIEWER_STDOUT_SELF);
42: }
44: MatGetColumnNorms(A,NORM_INFINITY,reductions_real);
45: if (rank == 0) {
46: PetscPrintf(PETSC_COMM_SELF,"NORM_INFINITY:\n");
47: PetscRealView(n,reductions_real,PETSC_VIEWER_STDOUT_SELF);
48: }
50: MatGetColumnSums(A,reductions_scalar);
51: if (!rank) {
52: PetscPrintf(PETSC_COMM_SELF,"REDUCTION_SUM:\n");
53: PetscScalarView(n,reductions_scalar,PETSC_VIEWER_STDOUT_SELF);
54: }
56: MatGetColumnMeans(A,reductions_scalar);
57: if (!rank) {
58: PetscPrintf(PETSC_COMM_SELF,"REDUCTION_MEAN:\n");
59: PetscScalarView(n,reductions_scalar,PETSC_VIEWER_STDOUT_SELF);
60: }
62: PetscFree(reductions_real);
63: PetscFree(reductions_scalar);
64: MatDestroy(&A);
65: PetscFinalize();
66: return ierr;
67: }
69: /*TEST
71: test:
72: suffix: 1
73: nsize: 2
74: requires: datafilespath !complex double !defined(PETSC_USE_64BIT_INDICES)
75: args: -f ${DATAFILESPATH}/matrices/small -mat_type aij
76: output_file: output/ex138.out
78: test:
79: suffix: 2
80: nsize: {{1 2}}
81: requires: datafilespath !complex double !defined(PETSC_USE_64BIT_INDICES)
82: args: -f ${DATAFILESPATH}/matrices/small -mat_type baij -matload_block_size {{2 3}}
83: output_file: output/ex138.out
85: test:
86: suffix: complex
87: nsize: 2
88: requires: datafilespath complex double !defined(PETSC_USE_64BIT_INDICES)
89: args: -f ${DATAFILESPATH}/matrices/nimrod/small_112905 -mat_type aij
90: output_file: output/ex138_complex.out
91: filter: grep -E "\ 0:|1340:|1344:"
93: TEST*/