1c4762a1bSJed Brown static char help[] = "Tests for bugs in A->offloadmask consistency for GPU matrices\n\n"; 2c4762a1bSJed Brown 3c4762a1bSJed Brown #include <petscmat.h> 4c4762a1bSJed Brown 5d71ae5a4SJacob Faibussowitsch int main(int argc, char **args) 6d71ae5a4SJacob Faibussowitsch { 7c4762a1bSJed Brown Mat A; 8c4762a1bSJed Brown PetscInt i, j, rstart, rend, m = 3; 9c4762a1bSJed Brown PetscScalar one = 1.0, zero = 0.0, negativeone = -1.0; 10c4762a1bSJed Brown PetscReal norm; 11c4762a1bSJed Brown Vec x, y; 12c4762a1bSJed Brown 13327415f7SBarry Smith PetscFunctionBeginUser; 14*c8025a54SPierre Jolivet PetscCall(PetscInitialize(&argc, &args, NULL, help)); 159566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-m", &m, NULL)); 16c4762a1bSJed Brown 17c4762a1bSJed Brown for (i = 0; i < 2; i++) { 18c4762a1bSJed Brown /* Create the matrix and set it to contain explicit zero entries on the diagonal. */ 199566063dSJacob Faibussowitsch PetscCall(MatCreate(PETSC_COMM_WORLD, &A)); 209566063dSJacob Faibussowitsch PetscCall(MatSetSizes(A, PETSC_DECIDE, PETSC_DECIDE, m * m, m * m)); 219566063dSJacob Faibussowitsch PetscCall(MatSetFromOptions(A)); 229566063dSJacob Faibussowitsch PetscCall(MatSetUp(A)); 239566063dSJacob Faibussowitsch PetscCall(MatGetOwnershipRange(A, &rstart, &rend)); 249566063dSJacob Faibussowitsch PetscCall(MatCreateVecs(A, &x, &y)); 259566063dSJacob Faibussowitsch PetscCall(VecSet(x, one)); 269566063dSJacob Faibussowitsch PetscCall(VecSet(y, zero)); 279566063dSJacob Faibussowitsch PetscCall(MatDiagonalSet(A, y, INSERT_VALUES)); 28c4762a1bSJed Brown 29c4762a1bSJed Brown /* Now set A to be the identity using various approaches. 30c4762a1bSJed Brown * Note that there may be other approaches that should be added here. */ 31c4762a1bSJed Brown switch (i) { 32d71ae5a4SJacob Faibussowitsch case 0: 33d71ae5a4SJacob Faibussowitsch PetscCall(MatDiagonalSet(A, x, INSERT_VALUES)); 34d71ae5a4SJacob Faibussowitsch break; 35c4762a1bSJed Brown case 1: 3648a46eb9SPierre Jolivet for (j = rstart; j < rend; j++) PetscCall(MatSetValue(A, j, j, one, INSERT_VALUES)); 379566063dSJacob Faibussowitsch PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY)); 389566063dSJacob Faibussowitsch PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY)); 39c4762a1bSJed Brown break; 40c4762a1bSJed Brown case 2: 4148a46eb9SPierre Jolivet for (j = rstart; j < rend; j++) PetscCall(MatSetValuesRow(A, j, &one)); 429566063dSJacob Faibussowitsch PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY)); 439566063dSJacob Faibussowitsch PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY)); 44d71ae5a4SJacob Faibussowitsch default: 45d71ae5a4SJacob Faibussowitsch break; 46c4762a1bSJed Brown } 47c4762a1bSJed Brown 48c4762a1bSJed Brown /* Compute y <- A*x and verify that the difference between y and x is negligible, as it should be since A is the identity. */ 499566063dSJacob Faibussowitsch PetscCall(MatMult(A, x, y)); 509566063dSJacob Faibussowitsch PetscCall(VecAXPY(y, negativeone, x)); 519566063dSJacob Faibussowitsch PetscCall(VecNorm(y, NORM_2, &norm)); 5248a46eb9SPierre Jolivet if (norm > PETSC_SQRT_MACHINE_EPSILON) PetscCall(PetscPrintf(PETSC_COMM_WORLD, "Test %" PetscInt_FMT ": Norm of error is %g, but should be near 0.\n", i, (double)norm)); 53c4762a1bSJed Brown 549566063dSJacob Faibussowitsch PetscCall(MatDestroy(&A)); 559566063dSJacob Faibussowitsch PetscCall(VecDestroy(&x)); 569566063dSJacob Faibussowitsch PetscCall(VecDestroy(&y)); 57c4762a1bSJed Brown } 58c4762a1bSJed Brown 599566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 60b122ec5aSJacob Faibussowitsch return 0; 61c4762a1bSJed Brown } 62c4762a1bSJed Brown 63c4762a1bSJed Brown /*TEST 64f4747e26SJunchao Zhang testset: 65f4747e26SJunchao Zhang output_file: output/empty.out 66c4762a1bSJed Brown 67c4762a1bSJed Brown test: 68c4762a1bSJed Brown suffix: aijviennacl_1 69f4747e26SJunchao Zhang nsize: {{1 2}} 70c4762a1bSJed Brown args: -mat_type aijviennacl 71c4762a1bSJed Brown requires: viennacl 72c4762a1bSJed Brown 73c4762a1bSJed Brown test: 74c4762a1bSJed Brown suffix: aijcusparse_1 75f4747e26SJunchao Zhang nsize: {{1 2}} 76c4762a1bSJed Brown args: -mat_type aijcusparse 77c4762a1bSJed Brown requires: cuda 78c4762a1bSJed Brown 79c4762a1bSJed Brown test: 80f4747e26SJunchao Zhang suffix: kokkos 81f4747e26SJunchao Zhang nsize: {{1 2}} 82f4747e26SJunchao Zhang args: -mat_type aijkokkos 83f4747e26SJunchao Zhang requires: kokkos_kernels 84f4747e26SJunchao Zhang 85c4762a1bSJed Brown TEST*/ 86