1 2 static char help[] = "Test the use of MatSetValuesBlocked(), MatZeroRows() for rectangular MatBAIJ matrix, test MatSetValuesBlocked() for MatSBAIJ matrix (-test_mat_sbaij)."; 3 4 #include <petscmat.h> 5 6 int main(int argc,char **args) 7 { 8 Mat A; 9 PetscInt bs=3,m=4,n=6,i,j,val = 10,row[2],col[3],eval,rstart; 10 PetscErrorCode ierr; 11 PetscMPIInt size,rank; 12 PetscScalar x[6][9],y[3][3],one=1.0; 13 PetscBool flg,testsbaij=PETSC_FALSE; 14 15 ierr = PetscInitialize(&argc,&args,(char*)0,help);if (ierr) return ierr; 16 CHKERRMPI(MPI_Comm_size(PETSC_COMM_WORLD,&size)); 17 CHKERRMPI(MPI_Comm_rank(PETSC_COMM_WORLD,&rank)); 18 19 CHKERRQ(PetscOptionsHasName(NULL,NULL,"-test_mat_sbaij",&testsbaij)); 20 21 if (testsbaij) { 22 CHKERRQ(MatCreateSBAIJ(PETSC_COMM_WORLD,bs,m*bs,n*bs,PETSC_DECIDE,PETSC_DECIDE,1,NULL,1,NULL,&A)); 23 } else { 24 CHKERRQ(MatCreateBAIJ(PETSC_COMM_WORLD,bs,m*bs,n*bs,PETSC_DECIDE,PETSC_DECIDE,1,NULL,1,NULL,&A)); 25 } 26 CHKERRQ(MatSetOption(A,MAT_NEW_NONZERO_ALLOCATION_ERR,PETSC_FALSE)); 27 eval = 9; 28 29 CHKERRQ(PetscOptionsHasName(NULL,NULL,"-ass_extern",&flg)); 30 if (flg && (size != 1)) rstart = m*((rank+1)%size); 31 else rstart = m*(rank); 32 33 row[0] =rstart+0; row[1] =rstart+2; 34 col[0] =rstart+0; col[1] =rstart+1; col[2] =rstart+3; 35 for (i=0; i<6; i++) { 36 for (j =0; j< 9; j++) x[i][j] = (PetscScalar)val++; 37 } 38 39 CHKERRQ(MatSetValuesBlocked(A,2,row,3,col,&x[0][0],INSERT_VALUES)); 40 41 CHKERRQ(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY)); 42 CHKERRQ(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY)); 43 44 /* 45 This option does not work for rectangular matrices 46 CHKERRQ(MatSetOption(A,MAT_NEW_NONZERO_LOCATION_ERR,PETSC_TRUE)); 47 */ 48 49 CHKERRQ(MatSetValuesBlocked(A,2,row,3,col,&x[0][0],INSERT_VALUES)); 50 51 /* Do another MatSetValues to test the case when only one local block is specified */ 52 for (i=0; i<3; i++) { 53 for (j =0; j<3; j++) y[i][j] = (PetscScalar)(10 + i*eval + j); 54 } 55 CHKERRQ(MatSetValuesBlocked(A,1,row,1,col,&y[0][0],INSERT_VALUES)); 56 CHKERRQ(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY)); 57 CHKERRQ(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY)); 58 59 CHKERRQ(PetscOptionsHasName(NULL,NULL,"-zero_rows",&flg)); 60 if (flg) { 61 col[0] = rstart*bs+0; 62 col[1] = rstart*bs+1; 63 col[2] = rstart*bs+2; 64 CHKERRQ(MatZeroRows(A,3,col,one,0,0)); 65 } 66 67 CHKERRQ(MatView(A,PETSC_VIEWER_STDOUT_WORLD)); 68 69 CHKERRQ(MatDestroy(&A)); 70 ierr = PetscFinalize(); 71 return ierr; 72 } 73 74 /*TEST 75 76 test: 77 filter: grep -v "MPI processes" 78 79 test: 80 suffix: 4 81 nsize: 3 82 args: -ass_extern 83 filter: grep -v "MPI processes" 84 85 test: 86 suffix: 5 87 nsize: 3 88 args: -ass_extern -zero_rows 89 filter: grep -v "MPI processes" 90 91 TEST*/ 92