Actual source code: ex34.c
1: static char help[] = "Test MatMatMult() and MatTransposeMatMult() for MPIAIJ and MPIDENSE matrices. \n\
2: Sequential part of mpidense matrix allows changes made by MatDenseSetLDA(). \n\n";
4: #include <petsc.h>
6: int main(int argc, char **argv)
7: {
8: Mat A, B, C, C1;
9: PetscMPIInt size;
10: PetscInt i, ia[2] = {0, 2}, ja[2] = {0, 1}, lda = 4;
11: PetscScalar a[2] = {1.0, 1.0}, *data;
12: PetscBool flg;
15: PetscInitialize(&argc, &argv, (char *)0, help);
16: MPI_Comm_size(PETSC_COMM_WORLD, &size);
19: MatCreate(PETSC_COMM_WORLD, &A);
20: MatSetType(A, MATMPIAIJ);
21: MatSetSizes(A, 1, 1, 2, 2);
22: MatMPIAIJSetPreallocationCSR(A, ia, ja, a);
24: PetscCalloc1(4 * lda, &data);
25: for (i = 0; i < 4; ++i) data[lda * i] = i * 1.0;
27: MatCreateDense(PETSC_COMM_WORLD, 1, PETSC_DECIDE, 2, 4, data, &B);
28: MatSetOptionsPrefix(B, "b_");
29: MatSetFromOptions(B);
30: MatDenseSetLDA(B, lda);
32: /* Test MatMatMult() */
33: MatMatMult(A, B, MAT_INITIAL_MATRIX, PETSC_DEFAULT, &C);
34: MatMatMult(A, B, MAT_REUSE_MATRIX, PETSC_DEFAULT, &C);
36: MatMatMultEqual(A, B, C, 10, &flg);
39: /* Test user-provided mpidense matrix product */
40: MatDuplicate(C, MAT_COPY_VALUES, &C1);
41: MatMatMult(A, B, MAT_REUSE_MATRIX, PETSC_DEFAULT, &C1);
42: MatMatMultEqual(A, B, C1, 10, &flg);
45: MatDestroy(&C1);
46: MatDestroy(&C);
48: /* Test MatTransposeMatMult() */
49: MatTransposeMatMult(A, B, MAT_INITIAL_MATRIX, PETSC_DEFAULT, &C);
50: MatTransposeMatMult(A, B, MAT_REUSE_MATRIX, PETSC_DEFAULT, &C);
52: MatTransposeMatMultEqual(A, B, C, 10, &flg);
54: MatDestroy(&C);
56: MatDestroy(&B);
57: MatDestroy(&A);
58: PetscFree(data);
60: PetscFinalize();
61: return 0;
62: }
64: /*TEST
66: test:
67: suffix: 1
68: nsize: 2
69: output_file: output/ex34.out
71: test:
72: suffix: 1_cuda
73: requires: cuda
74: nsize: 2
75: args: -b_mat_type mpidensecuda
76: output_file: output/ex34.out
77: TEST*/