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;
9: PetscReal *reductions_real;
10: PetscScalar *reductions_scalar;
11: char file[PETSC_MAX_PATH_LEN];
12: PetscBool flg;
13: PetscViewer fd;
14: PetscInt n;
15: PetscMPIInt rank;
17: PetscInitialize(&argc,&args,(char*)0,help);
18: MPI_Comm_rank(PETSC_COMM_WORLD,&rank);
19: PetscOptionsGetString(NULL,NULL,"-f",file,sizeof(file),&flg);
21: PetscViewerBinaryOpen(PETSC_COMM_WORLD,file,FILE_MODE_READ,&fd);
22: MatCreate(PETSC_COMM_WORLD,&A);
23: MatSetFromOptions(A);
24: MatLoad(A,fd);
25: PetscViewerDestroy(&fd);
27: MatGetSize(A,NULL,&n);
28: PetscMalloc1(n,&reductions_real);
29: PetscMalloc1(n,&reductions_scalar);
31: MatGetColumnNorms(A,NORM_2,reductions_real);
32: if (rank == 0) {
33: PetscPrintf(PETSC_COMM_SELF,"NORM_2:\n");
34: PetscRealView(n,reductions_real,PETSC_VIEWER_STDOUT_SELF);
35: }
37: MatGetColumnNorms(A,NORM_1,reductions_real);
38: if (rank == 0) {
39: PetscPrintf(PETSC_COMM_SELF,"NORM_1:\n");
40: PetscRealView(n,reductions_real,PETSC_VIEWER_STDOUT_SELF);
41: }
43: MatGetColumnNorms(A,NORM_INFINITY,reductions_real);
44: if (rank == 0) {
45: PetscPrintf(PETSC_COMM_SELF,"NORM_INFINITY:\n");
46: PetscRealView(n,reductions_real,PETSC_VIEWER_STDOUT_SELF);
47: }
49: MatGetColumnSums(A,reductions_scalar);
50: if (!rank) {
51: PetscPrintf(PETSC_COMM_SELF,"REDUCTION_SUM:\n");
52: PetscScalarView(n,reductions_scalar,PETSC_VIEWER_STDOUT_SELF);
53: }
55: MatGetColumnMeans(A,reductions_scalar);
56: if (!rank) {
57: PetscPrintf(PETSC_COMM_SELF,"REDUCTION_MEAN:\n");
58: PetscScalarView(n,reductions_scalar,PETSC_VIEWER_STDOUT_SELF);
59: }
61: PetscFree(reductions_real);
62: PetscFree(reductions_scalar);
63: MatDestroy(&A);
64: PetscFinalize();
65: return 0;
66: }
68: /*TEST
70: test:
71: suffix: 1
72: nsize: 2
73: requires: datafilespath !complex double !defined(PETSC_USE_64BIT_INDICES)
74: args: -f ${DATAFILESPATH}/matrices/small -mat_type aij
75: output_file: output/ex138.out
77: test:
78: suffix: 2
79: nsize: {{1 2}}
80: requires: datafilespath !complex double !defined(PETSC_USE_64BIT_INDICES)
81: args: -f ${DATAFILESPATH}/matrices/small -mat_type baij -matload_block_size {{2 3}}
82: output_file: output/ex138.out
84: test:
85: suffix: complex
86: nsize: 2
87: requires: datafilespath complex double !defined(PETSC_USE_64BIT_INDICES)
88: args: -f ${DATAFILESPATH}/matrices/nimrod/small_112905 -mat_type aij
89: output_file: output/ex138_complex.out
90: filter: grep -E "\ 0:|1340:|1344:"
92: TEST*/