1c4762a1bSJed Brown static char help[] = "Test MatCreateNest with block sizes.\n"; 2c4762a1bSJed Brown 3c4762a1bSJed Brown #include <petscmat.h> 4c4762a1bSJed Brown 5c4762a1bSJed Brown int main(int argc, char **argv) 6c4762a1bSJed Brown { 7c4762a1bSJed Brown Mat A, B, C, mats[2]; 8c4762a1bSJed Brown ISLocalToGlobalMapping cmap, rmap; 9c4762a1bSJed Brown const PetscInt indices[1] = {0}; 10c4762a1bSJed Brown PetscMPIInt size; 11c4762a1bSJed Brown 12*9566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc, &argv, NULL, help)); 13*9566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD, &size)); 142c71b3e2SJacob Faibussowitsch PetscCheckFalse(size > 1,PETSC_COMM_WORLD,PETSC_ERR_ARG_WRONG,"Only coded for one process"); 15*9566063dSJacob Faibussowitsch PetscCall(MatCreate(PETSC_COMM_WORLD, &A)); 16*9566063dSJacob Faibussowitsch PetscCall(MatSetSizes(A, PETSC_DECIDE, PETSC_DECIDE, 1, 2)); 17*9566063dSJacob Faibussowitsch PetscCall(MatSetBlockSizes(A, 1, 2)); 18*9566063dSJacob Faibussowitsch PetscCall(MatSetType(A,MATAIJ)); 19*9566063dSJacob Faibussowitsch PetscCall(ISLocalToGlobalMappingCreate(PETSC_COMM_WORLD, 2, 1, indices,PETSC_COPY_VALUES, &cmap)); 20*9566063dSJacob Faibussowitsch PetscCall(ISLocalToGlobalMappingCreate(PETSC_COMM_WORLD, 1, 1, indices,PETSC_COPY_VALUES, &rmap)); 21*9566063dSJacob Faibussowitsch PetscCall(MatSetLocalToGlobalMapping(A, rmap, cmap)); 22*9566063dSJacob Faibussowitsch PetscCall(MatCreate(PETSC_COMM_WORLD, &B)); 23*9566063dSJacob Faibussowitsch PetscCall(MatSetSizes(B, PETSC_DECIDE, PETSC_DECIDE, 1, 1)); 24*9566063dSJacob Faibussowitsch PetscCall(MatSetBlockSizes(A, 1, 1)); 25*9566063dSJacob Faibussowitsch PetscCall(MatSetType(B,MATAIJ)); 26*9566063dSJacob Faibussowitsch PetscCall(MatSetLocalToGlobalMapping(B, rmap, rmap)); 27*9566063dSJacob Faibussowitsch PetscCall(ISLocalToGlobalMappingDestroy(&rmap)); 28*9566063dSJacob Faibussowitsch PetscCall(ISLocalToGlobalMappingDestroy(&cmap)); 29*9566063dSJacob Faibussowitsch PetscCall(MatSetUp(A)); 30*9566063dSJacob Faibussowitsch PetscCall(MatSetUp(B)); 31c4762a1bSJed Brown mats[0] = A; 32c4762a1bSJed Brown mats[1] = B; 33*9566063dSJacob Faibussowitsch PetscCall(MatCreateNest(PETSC_COMM_WORLD, 1, NULL, 2, NULL, mats,&C)); 34*9566063dSJacob Faibussowitsch PetscCall(MatSetUp(C)); 35*9566063dSJacob Faibussowitsch PetscCall(MatAssemblyBegin(C, MAT_FINAL_ASSEMBLY)); 36*9566063dSJacob Faibussowitsch PetscCall(MatAssemblyEnd(C, MAT_FINAL_ASSEMBLY)); 37*9566063dSJacob Faibussowitsch PetscCall(MatView(C, NULL)); 38*9566063dSJacob Faibussowitsch PetscCall(MatDestroy(&C)); 39*9566063dSJacob Faibussowitsch PetscCall(MatDestroy(&B)); 40*9566063dSJacob Faibussowitsch PetscCall(MatDestroy(&A)); 41*9566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 42b122ec5aSJacob Faibussowitsch return 0; 43c4762a1bSJed Brown } 44c4762a1bSJed Brown 45c4762a1bSJed Brown /*TEST 46c4762a1bSJed Brown 47c4762a1bSJed Brown test: 48c4762a1bSJed Brown 49c4762a1bSJed Brown TEST*/ 50