Actual source code: ex198.c
1: static char help[] = "Test MatMatMatMult\n\
2: Reads PETSc matrix A B and C, then comput D=A*B*C \n\
3: Input parameters include\n\
4: -fA <input_file> -fB <input_file> -fC <input_file> \n\n";
6: #include <petscmat.h>
8: int main(int argc, char **args)
9: {
10: Mat A, B, C, D, BC, ABC;
11: PetscViewer fd;
12: char file[3][PETSC_MAX_PATH_LEN];
13: PetscBool flg;
16: PetscInitialize(&argc, &args, (char *)0, help);
17: /* read matrices A, B and C */
18: PetscOptionsGetString(NULL, NULL, "-fA", file[0], sizeof(file[0]), &flg);
21: PetscOptionsGetString(NULL, NULL, "-fB", file[1], sizeof(file[1]), &flg);
24: PetscOptionsGetString(NULL, NULL, "-fC", file[2], sizeof(file[2]), &flg);
27: /* Load matrices */
28: PetscViewerBinaryOpen(PETSC_COMM_WORLD, file[0], FILE_MODE_READ, &fd);
29: MatCreate(PETSC_COMM_WORLD, &A);
30: MatLoad(A, fd);
31: PetscViewerDestroy(&fd);
33: PetscViewerBinaryOpen(PETSC_COMM_WORLD, file[1], FILE_MODE_READ, &fd);
34: MatCreate(PETSC_COMM_WORLD, &B);
35: MatLoad(B, fd);
36: PetscViewerDestroy(&fd);
38: PetscViewerBinaryOpen(PETSC_COMM_WORLD, file[2], FILE_MODE_READ, &fd);
39: MatCreate(PETSC_COMM_WORLD, &C);
40: MatLoad(C, fd);
41: PetscViewerDestroy(&fd);
43: /* Test MatMatMult() */
44: MatMatMult(B, C, MAT_INITIAL_MATRIX, PETSC_DEFAULT, &BC);
45: MatMatMult(A, BC, MAT_INITIAL_MATRIX, PETSC_DEFAULT, &ABC);
47: MatMatMatMult(A, B, C, MAT_INITIAL_MATRIX, PETSC_DEFAULT, &D);
48: MatMatMatMult(A, B, C, MAT_REUSE_MATRIX, PETSC_DEFAULT, &D);
49: /* MatView(D,PETSC_VIEWER_STDOUT_WORLD); */
51: MatEqual(ABC, D, &flg);
54: MatDestroy(&ABC);
55: MatDestroy(&BC);
56: MatDestroy(&D);
57: MatDestroy(&C);
58: MatDestroy(&B);
59: MatDestroy(&A);
60: PetscFinalize();
61: return 0;
62: }
64: /*TEST
66: test:
67: requires: datafilespath !complex double !defined(PETSC_USE_64BIT_INDICES)
68: args: -fA ${DATAFILESPATH}/matrices/matmatmatmult/A.bin -fB ${DATAFILESPATH}/matrices/matmatmatmult/B.bin -fC ${DATAFILESPATH}/matrices/matmatmatmult/C.bin
69: output_file: output/ex198.out
71: test:
72: suffix: 2
73: nsize: 3
74: requires: datafilespath !complex double !defined(PETSC_USE_64BIT_INDICES)
75: args: -fA ${DATAFILESPATH}/matrices/matmatmatmult/A.bin -fB ${DATAFILESPATH}/matrices/matmatmatmult/B.bin -fC ${DATAFILESPATH}/matrices/matmatmatmult/C.bin
76: output_file: output/ex198.out
78: TEST*/