173b6653fSLawrence Mitchell static char help[] = "Test MatCreateSubMatrix with -mat_type nest and block sizes.\n"; 273b6653fSLawrence Mitchell 373b6653fSLawrence Mitchell #include <petscmat.h> 473b6653fSLawrence Mitchell 573b6653fSLawrence Mitchell int main(int argc, char **argv) 673b6653fSLawrence Mitchell { 773b6653fSLawrence Mitchell Mat A, B, C, mats[6]; 873b6653fSLawrence Mitchell IS rows[2]; 973b6653fSLawrence Mitchell ISLocalToGlobalMapping cmap, rmap; 1073b6653fSLawrence Mitchell const PetscInt indices[3] = {0, 1, 2}; 1173b6653fSLawrence Mitchell PetscInt i; 1273b6653fSLawrence Mitchell PetscMPIInt size; 1373b6653fSLawrence Mitchell PetscErrorCode ierr; 1473b6653fSLawrence Mitchell 1573b6653fSLawrence Mitchell ierr = PetscInitialize(&argc,&argv,NULL,help); if (ierr) return ierr; 16ffc4695bSBarry Smith ierr = MPI_Comm_size(PETSC_COMM_WORLD,&size);CHKERRMPI(ierr); 17*2c71b3e2SJacob Faibussowitsch PetscCheckFalse(size > 1,PETSC_COMM_WORLD,PETSC_ERR_ARG_WRONG,"Only coded for one process"); 1873b6653fSLawrence Mitchell ierr = MatCreate(PETSC_COMM_WORLD,&A);CHKERRQ(ierr); 1973b6653fSLawrence Mitchell ierr = MatSetSizes(A,PETSC_DECIDE,PETSC_DECIDE,2,1);CHKERRQ(ierr); 2073b6653fSLawrence Mitchell ierr = MatSetBlockSizes(A,2,1);CHKERRQ(ierr); 2173b6653fSLawrence Mitchell ierr = MatSetType(A,MATAIJ);CHKERRQ(ierr); 2273b6653fSLawrence Mitchell ierr = ISLocalToGlobalMappingCreate(PETSC_COMM_WORLD,2,1,indices,PETSC_COPY_VALUES,&rmap);CHKERRQ(ierr); 2373b6653fSLawrence Mitchell ierr = ISLocalToGlobalMappingCreate(PETSC_COMM_WORLD,1,1,indices,PETSC_COPY_VALUES,&cmap);CHKERRQ(ierr); 2473b6653fSLawrence Mitchell ierr = MatSetLocalToGlobalMapping(A,rmap,cmap);CHKERRQ(ierr); 2573b6653fSLawrence Mitchell ierr = ISLocalToGlobalMappingDestroy(&rmap);CHKERRQ(ierr); 2673b6653fSLawrence Mitchell ierr = ISLocalToGlobalMappingDestroy(&cmap);CHKERRQ(ierr); 2773b6653fSLawrence Mitchell ierr = ISLocalToGlobalMappingCreate(PETSC_COMM_WORLD,1,2,indices,PETSC_COPY_VALUES,&rmap);CHKERRQ(ierr); 2873b6653fSLawrence Mitchell ierr = ISLocalToGlobalMappingCreate(PETSC_COMM_WORLD,1,3,indices,PETSC_COPY_VALUES,&cmap);CHKERRQ(ierr); 2973b6653fSLawrence Mitchell ierr = MatCreate(PETSC_COMM_WORLD,&B);CHKERRQ(ierr); 3073b6653fSLawrence Mitchell ierr = MatSetSizes(B,PETSC_DECIDE,PETSC_DECIDE,2,3);CHKERRQ(ierr); 3173b6653fSLawrence Mitchell ierr = MatSetBlockSizes(B,1,1);CHKERRQ(ierr); 3273b6653fSLawrence Mitchell ierr = MatSetType(B,MATAIJ);CHKERRQ(ierr); 3373b6653fSLawrence Mitchell ierr = MatSetLocalToGlobalMapping(B,rmap,cmap);CHKERRQ(ierr); 3473b6653fSLawrence Mitchell ierr = ISLocalToGlobalMappingDestroy(&rmap);CHKERRQ(ierr); 3573b6653fSLawrence Mitchell ierr = ISLocalToGlobalMappingDestroy(&cmap);CHKERRQ(ierr); 3673b6653fSLawrence Mitchell ierr = MatSetUp(A);CHKERRQ(ierr); 3773b6653fSLawrence Mitchell ierr = MatSetUp(B);CHKERRQ(ierr); 3873b6653fSLawrence Mitchell mats[0] = A; 3973b6653fSLawrence Mitchell mats[1] = B; 4073b6653fSLawrence Mitchell mats[2] = A; 4173b6653fSLawrence Mitchell mats[3] = NULL; 4273b6653fSLawrence Mitchell mats[4] = B; 4373b6653fSLawrence Mitchell mats[5] = A; 4473b6653fSLawrence Mitchell ierr = MatCreateNest(PETSC_COMM_WORLD,2,NULL,3,NULL,mats,&C);CHKERRQ(ierr); 4573b6653fSLawrence Mitchell ierr = MatSetUp(C);CHKERRQ(ierr); 4673b6653fSLawrence Mitchell ierr = MatAssemblyBegin(C,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 4773b6653fSLawrence Mitchell ierr = MatAssemblyEnd(C,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 4873b6653fSLawrence Mitchell ierr = MatView(C,NULL);CHKERRQ(ierr); 4973b6653fSLawrence Mitchell ierr = MatNestGetISs(C,rows,NULL);CHKERRQ(ierr); 5073b6653fSLawrence Mitchell for (i=0; i<2; i++) { 5173b6653fSLawrence Mitchell Mat submat; 5273b6653fSLawrence Mitchell IS cols[3]; 5373b6653fSLawrence Mitchell PetscInt j; 5473b6653fSLawrence Mitchell ierr = ISView(rows[i],NULL);CHKERRQ(ierr); 5573b6653fSLawrence Mitchell ierr = MatCreateSubMatrix(C,rows[i],NULL,MAT_INITIAL_MATRIX,&submat);CHKERRQ(ierr); 5673b6653fSLawrence Mitchell ierr = MatView(submat,NULL);CHKERRQ(ierr); 5773b6653fSLawrence Mitchell ierr = MatNestGetISs(submat,NULL,cols);CHKERRQ(ierr); 5873b6653fSLawrence Mitchell for (j=0; j<3; j++) { 5973b6653fSLawrence Mitchell ierr = ISView(cols[j],NULL);CHKERRQ(ierr); 6073b6653fSLawrence Mitchell } 6173b6653fSLawrence Mitchell ierr = MatDestroy(&submat);CHKERRQ(ierr); 6273b6653fSLawrence Mitchell } 6373b6653fSLawrence Mitchell ierr = MatDestroy(&C);CHKERRQ(ierr); 6473b6653fSLawrence Mitchell ierr = MatDestroy(&B);CHKERRQ(ierr); 6573b6653fSLawrence Mitchell ierr = MatDestroy(&A);CHKERRQ(ierr); 6673b6653fSLawrence Mitchell ierr = PetscFinalize(); 6773b6653fSLawrence Mitchell return ierr; 6873b6653fSLawrence Mitchell } 6973b6653fSLawrence Mitchell 7073b6653fSLawrence Mitchell /*TEST 7173b6653fSLawrence Mitchell 7273b6653fSLawrence Mitchell test: 7373b6653fSLawrence Mitchell 7473b6653fSLawrence Mitchell TEST*/ 75