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;
12: PetscFunctionBeginUser;
13: PetscCall(PetscInitialize(&argc, &argv, (char *)0, help));
14: PetscCall(PetscOptionsGetInt(NULL, NULL, "-m", &m, NULL));
15: PetscCall(PetscOptionsGetInt(NULL, NULL, "-n", &n, NULL));
16: PetscCall(MatCreate(PETSC_COMM_SELF, &A));
17: PetscCall(MatSetSizes(A, PETSC_DECIDE, PETSC_DECIDE, m, n));
18: PetscCall(MatSetType(A, MATSEQDENSE));
19: PetscCall(MatSetFromOptions(A));
20: PetscCall(MatSeqDenseSetPreallocation(A, NULL));
21: PetscCall(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: PetscCall(MatSetValues(A,1,&i,1,&j,&val,INSERT_VALUES));
29: }
30: }
31: PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY));
32: PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY));
33: #endif
35: /* Create a CUDA version of A */
36: #if defined(PETSC_HAVE_CUDA)
37: PetscCall(MatConvert(A, MATSEQDENSECUDA, MAT_INITIAL_MATRIX, &AC));
38: #else
39: PetscCall(MatDuplicate(A, MAT_COPY_VALUES, &AC));
40: #endif
41: PetscCall(MatDuplicate(AC, MAT_COPY_VALUES, &B));
43: /* full CUDA AXPY */
44: PetscCall(MatAXPY(B, -1.0, AC, SAME_NONZERO_PATTERN));
45: PetscCall(MatNorm(B, NORM_INFINITY, &r));
46: PetscCheck(r == 0.0, PetscObjectComm((PetscObject)B), PETSC_ERR_PLIB, "Error MatDuplicate + MatCopy + MatAXPY %g", (double)r);
48: /* test Copy */
49: PetscCall(MatCopy(AC, B, SAME_NONZERO_PATTERN));
51: /* call MatAXPY_Basic since B is CUDA, A is CPU, */
52: PetscCall(MatAXPY(B, -1.0, A, SAME_NONZERO_PATTERN));
53: PetscCall(MatNorm(B, NORM_INFINITY, &r));
54: PetscCheck(r == 0.0, PetscObjectComm((PetscObject)B), PETSC_ERR_PLIB, "Error MatDuplicate + MatCopy + MatAXPY_Basic %g", (double)r);
56: if (m == n) {
57: Mat B1, B2;
59: PetscCall(MatCopy(AC, B, SAME_NONZERO_PATTERN));
60: /* full CUDA PtAP */
61: PetscCall(MatPtAP(B, AC, MAT_INITIAL_MATRIX, PETSC_DEFAULT, &B1));
63: /* CPU PtAP since A is on the CPU only */
64: PetscCall(MatPtAP(B, A, MAT_INITIAL_MATRIX, PETSC_DEFAULT, &B2));
66: PetscCall(MatAXPY(B2, -1.0, B1, SAME_NONZERO_PATTERN));
67: PetscCall(MatNorm(B2, NORM_INFINITY, &r));
68: PetscCheck(r <= tol, PetscObjectComm((PetscObject)B), PETSC_ERR_PLIB, "Error MatPtAP %g", (double)r);
70: /* test reuse */
71: PetscCall(MatPtAP(B, AC, MAT_REUSE_MATRIX, PETSC_DEFAULT, &B1));
72: PetscCall(MatPtAP(B, A, MAT_REUSE_MATRIX, PETSC_DEFAULT, &B2));
73: PetscCall(MatAXPY(B2, -1.0, B1, SAME_NONZERO_PATTERN));
74: PetscCall(MatNorm(B2, NORM_INFINITY, &r));
75: PetscCheck(r <= tol, PetscObjectComm((PetscObject)B), PETSC_ERR_PLIB, "Error MatPtAP %g", (double)r);
77: PetscCall(MatDestroy(&B1));
78: PetscCall(MatDestroy(&B2));
79: }
81: PetscCall(MatDestroy(&B));
82: PetscCall(MatDestroy(&AC));
83: PetscCall(MatDestroy(&A));
84: PetscCall(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*/