1 2 static char help[] = "Tests late MatSetBlockSizes.\n\n"; 3 4 #include <petscmat.h> 5 6 int main(int argc, char **args) 7 { 8 Mat A; 9 Vec x[4]; 10 IS is; 11 ISLocalToGlobalMapping rmap, cmap; 12 PetscInt bs[4], l2gbs[4], rbs, cbs, l2grbs, l2gcbs, i; 13 14 PetscFunctionBeginUser; 15 PetscCall(PetscInitialize(&argc, &args, (char *)0, help)); 16 PetscCall(MatCreate(PETSC_COMM_WORLD, &A)); 17 PetscCall(MatSetSizes(A, 12, 12, PETSC_DECIDE, PETSC_DECIDE)); 18 PetscCall(MatSetType(A, MATAIJ)); 19 PetscCall(ISCreateStride(PETSC_COMM_WORLD, 12, 0, 1, &is)); 20 PetscCall(ISLocalToGlobalMappingCreateIS(is, &rmap)); 21 PetscCall(ISLocalToGlobalMappingSetBlockSize(rmap, 2)); 22 PetscCall(ISLocalToGlobalMappingCreateIS(is, &cmap)); 23 PetscCall(ISLocalToGlobalMappingSetBlockSize(cmap, 2)); 24 25 PetscCall(MatSetLocalToGlobalMapping(A, rmap, cmap)); 26 PetscCall(ISLocalToGlobalMappingDestroy(&rmap)); 27 PetscCall(ISLocalToGlobalMappingDestroy(&cmap)); 28 PetscCall(ISDestroy(&is)); 29 PetscCall(MatSetUp(A)); 30 31 PetscCall(MatCreateVecs(A, &x[1], &x[0])); 32 PetscCall(MatSetBlockSizes(A, 6, 3)); 33 PetscCall(MatCreateVecs(A, &x[3], &x[2])); 34 for (i = 0; i < 4; i++) { 35 ISLocalToGlobalMapping l2g; 36 37 PetscCall(VecGetBlockSize(x[i], &bs[i])); 38 PetscCall(VecGetLocalToGlobalMapping(x[i], &l2g)); 39 PetscCall(ISLocalToGlobalMappingGetBlockSize(l2g, &l2gbs[i])); 40 PetscCall(VecDestroy(&x[i])); 41 } 42 PetscCall(MatGetBlockSizes(A, &rbs, &cbs)); 43 PetscCall(MatGetLocalToGlobalMapping(A, &rmap, &cmap)); 44 PetscCall(ISLocalToGlobalMappingGetBlockSize(rmap, &l2grbs)); 45 PetscCall(ISLocalToGlobalMappingGetBlockSize(cmap, &l2gcbs)); 46 PetscCall(MatDestroy(&A)); 47 PetscCall(PetscPrintf(PETSC_COMM_WORLD, "Mat Block sizes: %" PetscInt_FMT " %" PetscInt_FMT " (l2g %" PetscInt_FMT " %" PetscInt_FMT ")\n", rbs, cbs, l2grbs, l2gcbs)); 48 PetscCall(PetscPrintf(PETSC_COMM_WORLD, "Vec Block sizes: %" PetscInt_FMT " %" PetscInt_FMT " (l2g %" PetscInt_FMT " %" PetscInt_FMT ")\n", bs[0], bs[1], l2gbs[0], l2gbs[1])); 49 PetscCall(PetscPrintf(PETSC_COMM_WORLD, "Vec Block sizes: %" PetscInt_FMT " %" PetscInt_FMT " (l2g %" PetscInt_FMT " %" PetscInt_FMT ")\n", bs[2], bs[3], l2gbs[2], l2gbs[3])); 50 PetscCall(PetscFinalize()); 51 return 0; 52 } 53 54 /*TEST 55 56 test: 57 nsize: 2 58 59 TEST*/ 60