1c4762a1bSJed Brown 2c4762a1bSJed Brown static char help[] = "Test MatAXPY and SUBSET_NONZERO_PATTERN [-different] [-skip]\n by default subset pattern is used \n\n"; 3c4762a1bSJed Brown 4c4762a1bSJed Brown /* A test contributed by Jose E. Roman, Oct. 2014 */ 5c4762a1bSJed Brown 6c4762a1bSJed Brown #include <petscmat.h> 7c4762a1bSJed Brown 8*d71ae5a4SJacob Faibussowitsch int main(int argc, char **args) 9*d71ae5a4SJacob Faibussowitsch { 10c4762a1bSJed Brown Mat A, B, C; 11c4762a1bSJed Brown PetscBool different = PETSC_FALSE, skip = PETSC_FALSE; 12c4762a1bSJed Brown PetscInt m0, m1, n = 128, i; 13c4762a1bSJed Brown 14327415f7SBarry Smith PetscFunctionBeginUser; 159566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc, &args, (char *)0, help)); 169566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetBool(NULL, NULL, "-different", &different, NULL)); 179566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetBool(NULL, NULL, "-skip", &skip, NULL)); 18c4762a1bSJed Brown /* 19c4762a1bSJed Brown Create matrices 20c4762a1bSJed Brown A = tridiag(1,-2,1) and B = diag(7); 21c4762a1bSJed Brown */ 229566063dSJacob Faibussowitsch PetscCall(MatCreate(PETSC_COMM_WORLD, &A)); 239566063dSJacob Faibussowitsch PetscCall(MatCreate(PETSC_COMM_WORLD, &B)); 249566063dSJacob Faibussowitsch PetscCall(MatSetSizes(A, PETSC_DECIDE, PETSC_DECIDE, n, n)); 259566063dSJacob Faibussowitsch PetscCall(MatSetSizes(B, PETSC_DECIDE, PETSC_DECIDE, n, n)); 269566063dSJacob Faibussowitsch PetscCall(MatSetFromOptions(A)); 279566063dSJacob Faibussowitsch PetscCall(MatSetFromOptions(B)); 289566063dSJacob Faibussowitsch PetscCall(MatSetUp(A)); 299566063dSJacob Faibussowitsch PetscCall(MatSetUp(B)); 309566063dSJacob Faibussowitsch PetscCall(MatGetOwnershipRange(A, &m0, &m1)); 31c4762a1bSJed Brown for (i = m0; i < m1; i++) { 329566063dSJacob Faibussowitsch if (i > 0) PetscCall(MatSetValue(A, i, i - 1, -1.0, INSERT_VALUES)); 339566063dSJacob Faibussowitsch if (i < n - 1) PetscCall(MatSetValue(A, i, i + 1, -1.0, INSERT_VALUES)); 349566063dSJacob Faibussowitsch PetscCall(MatSetValue(A, i, i, 2.0, INSERT_VALUES)); 359566063dSJacob Faibussowitsch PetscCall(MatSetValue(B, i, i, 7.0, INSERT_VALUES)); 36c4762a1bSJed Brown } 379566063dSJacob Faibussowitsch PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY)); 389566063dSJacob Faibussowitsch PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY)); 399566063dSJacob Faibussowitsch PetscCall(MatAssemblyBegin(B, MAT_FINAL_ASSEMBLY)); 409566063dSJacob Faibussowitsch PetscCall(MatAssemblyEnd(B, MAT_FINAL_ASSEMBLY)); 41c4762a1bSJed Brown 429566063dSJacob Faibussowitsch PetscCall(MatDuplicate(A, MAT_COPY_VALUES, &C)); 43c4762a1bSJed Brown /* Add B */ 449566063dSJacob Faibussowitsch PetscCall(MatAXPY(C, 1.0, B, (different) ? DIFFERENT_NONZERO_PATTERN : SUBSET_NONZERO_PATTERN)); 45c4762a1bSJed Brown /* Add A */ 469566063dSJacob Faibussowitsch if (!skip) PetscCall(MatAXPY(C, 1.0, A, SUBSET_NONZERO_PATTERN)); 47c4762a1bSJed Brown 48c4762a1bSJed Brown /* 49c4762a1bSJed Brown Free memory 50c4762a1bSJed Brown */ 519566063dSJacob Faibussowitsch PetscCall(MatDestroy(&A)); 529566063dSJacob Faibussowitsch PetscCall(MatDestroy(&B)); 539566063dSJacob Faibussowitsch PetscCall(MatDestroy(&C)); 549566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 55b122ec5aSJacob Faibussowitsch return 0; 56c4762a1bSJed Brown } 57c4762a1bSJed Brown 58c4762a1bSJed Brown /*TEST 59c4762a1bSJed Brown 60c4762a1bSJed Brown test: 61c4762a1bSJed Brown nsize: 4 62c4762a1bSJed Brown output_file: output/ex172.out 63c4762a1bSJed Brown 64c4762a1bSJed Brown test: 65c4762a1bSJed Brown suffix: 2 66c4762a1bSJed Brown nsize: 4 67c4762a1bSJed Brown args: -different 68c4762a1bSJed Brown output_file: output/ex172.out 69c4762a1bSJed Brown 70c4762a1bSJed Brown test: 71c4762a1bSJed Brown suffix: 3 72c4762a1bSJed Brown nsize: 4 73c4762a1bSJed Brown args: -skip 74c4762a1bSJed Brown output_file: output/ex172.out 75c4762a1bSJed Brown 76c4762a1bSJed Brown test: 77c4762a1bSJed Brown suffix: 4 78c4762a1bSJed Brown nsize: 4 79c4762a1bSJed Brown args: -different -skip 80c4762a1bSJed Brown output_file: output/ex172.out 81c4762a1bSJed Brown 82c4762a1bSJed Brown test: 83c4762a1bSJed Brown suffix: baij 84c4762a1bSJed Brown args: -mat_type baij> ex172.tmp 2>&1 85c4762a1bSJed Brown output_file: output/ex172.out 86c4762a1bSJed Brown 87c4762a1bSJed Brown test: 88c4762a1bSJed Brown suffix: mpibaij 89c4762a1bSJed Brown nsize: 4 90c4762a1bSJed Brown args: -mat_type baij> ex172.tmp 2>&1 91c4762a1bSJed Brown output_file: output/ex172.out 92c4762a1bSJed Brown 93c4762a1bSJed Brown test: 94c4762a1bSJed Brown suffix: mpisbaij 95c4762a1bSJed Brown nsize: 4 96c4762a1bSJed Brown args: -mat_type sbaij> ex172.tmp 2>&1 97c4762a1bSJed Brown output_file: output/ex172.out 98c4762a1bSJed Brown 99c4762a1bSJed Brown test: 100c4762a1bSJed Brown suffix: sbaij 101c4762a1bSJed Brown args: -mat_type sbaij> ex172.tmp 2>&1 102c4762a1bSJed Brown output_file: output/ex172.out 103c4762a1bSJed Brown 104c4762a1bSJed Brown TEST*/ 105