Actual source code: ex32.c
2: static char help[] = "Tests MATSEQDENSECUDA\n\n";
4: #include <petscmat.h>
6: int main(int argc, char **argv)
7: {
8: Mat A, AC, B;
9: PetscInt m = 10, n = 10;
10: PetscReal r, tol = 10 * PETSC_SMALL;
13: PetscInitialize(&argc, &argv, (char *)0, help);
14: PetscOptionsGetInt(NULL, NULL, "-m", &m, NULL);
15: PetscOptionsGetInt(NULL, NULL, "-n", &n, NULL);
16: MatCreate(PETSC_COMM_SELF, &A);
17: MatSetSizes(A, PETSC_DECIDE, PETSC_DECIDE, m, n);
18: MatSetType(A, MATSEQDENSE);
19: MatSetFromOptions(A);
20: MatSeqDenseSetPreallocation(A, NULL);
21: MatSetRandom(A, NULL);
22: #if 0
23: PetscInt i,j;
24: PetscScalar val;
25: for (i=0; i<m; i++) {
26: for (j=0; j<n; j++) {
27: val = (PetscScalar)(i+j);
28: MatSetValues(A,1,&i,1,&j,&val,INSERT_VALUES);
29: }
30: }
31: MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY);
32: MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY);
33: #endif
35: /* Create a CUDA version of A */
36: #if defined(PETSC_HAVE_CUDA)
37: MatConvert(A, MATSEQDENSECUDA, MAT_INITIAL_MATRIX, &AC);
38: #else
39: MatDuplicate(A, MAT_COPY_VALUES, &AC);
40: #endif
41: MatDuplicate(AC, MAT_COPY_VALUES, &B);
43: /* full CUDA AXPY */
44: MatAXPY(B, -1.0, AC, SAME_NONZERO_PATTERN);
45: MatNorm(B, NORM_INFINITY, &r);
48: /* test Copy */
49: MatCopy(AC, B, SAME_NONZERO_PATTERN);
51: /* call MatAXPY_Basic since B is CUDA, A is CPU, */
52: MatAXPY(B, -1.0, A, SAME_NONZERO_PATTERN);
53: MatNorm(B, NORM_INFINITY, &r);
56: if (m == n) {
57: Mat B1, B2;
59: MatCopy(AC, B, SAME_NONZERO_PATTERN);
60: /* full CUDA PtAP */
61: MatPtAP(B, AC, MAT_INITIAL_MATRIX, PETSC_DEFAULT, &B1);
63: /* CPU PtAP since A is on the CPU only */
64: MatPtAP(B, A, MAT_INITIAL_MATRIX, PETSC_DEFAULT, &B2);
66: MatAXPY(B2, -1.0, B1, SAME_NONZERO_PATTERN);
67: MatNorm(B2, NORM_INFINITY, &r);
70: /* test reuse */
71: MatPtAP(B, AC, MAT_REUSE_MATRIX, PETSC_DEFAULT, &B1);
72: MatPtAP(B, A, MAT_REUSE_MATRIX, PETSC_DEFAULT, &B2);
73: MatAXPY(B2, -1.0, B1, SAME_NONZERO_PATTERN);
74: MatNorm(B2, NORM_INFINITY, &r);
77: MatDestroy(&B1);
78: MatDestroy(&B2);
79: }
81: MatDestroy(&B);
82: MatDestroy(&AC);
83: MatDestroy(&A);
84: PetscFinalize();
85: return 0;
86: }
88: /*TEST
90: build:
91: requires: cuda
93: test:
94: output_file: output/ex32_1.out
95: args: -m {{3 5 12}} -n {{3 5 12}}
96: suffix: seqdensecuda
98: TEST*/