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 ierr = MPI_Comm_size(PETSC_COMM_WORLD,&size);CHKERRMPI(ierr); 17 ierr = MPI_Comm_rank(PETSC_COMM_WORLD,&rank);CHKERRMPI(ierr); 18 19 ierr = PetscOptionsHasName(NULL,NULL,"-test_mat_sbaij",&testsbaij);CHKERRQ(ierr); 20 21 if (testsbaij) { 22 ierr = MatCreateSBAIJ(PETSC_COMM_WORLD,bs,m*bs,n*bs,PETSC_DECIDE,PETSC_DECIDE,1,NULL,1,NULL,&A);CHKERRQ(ierr); 23 } else { 24 ierr = MatCreateBAIJ(PETSC_COMM_WORLD,bs,m*bs,n*bs,PETSC_DECIDE,PETSC_DECIDE,1,NULL,1,NULL,&A);CHKERRQ(ierr); 25 } 26 ierr = MatSetOption(A,MAT_NEW_NONZERO_ALLOCATION_ERR,PETSC_FALSE);CHKERRQ(ierr); 27 eval = 9; 28 29 ierr = PetscOptionsHasName(NULL,NULL,"-ass_extern",&flg);CHKERRQ(ierr); 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 ierr = MatSetValuesBlocked(A,2,row,3,col,&x[0][0],INSERT_VALUES);CHKERRQ(ierr); 40 41 42 43 ierr = MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 44 ierr = MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 45 46 /* 47 This option does not work for rectangular matrices 48 ierr = MatSetOption(A,MAT_NEW_NONZERO_LOCATION_ERR,PETSC_TRUE);CHKERRQ(ierr); 49 */ 50 51 ierr = MatSetValuesBlocked(A,2,row,3,col,&x[0][0],INSERT_VALUES);CHKERRQ(ierr); 52 53 /* Do another MatSetValues to test the case when only one local block is specified */ 54 for (i=0; i<3; i++) { 55 for (j =0; j<3; j++) y[i][j] = (PetscScalar)(10 + i*eval + j); 56 } 57 ierr = MatSetValuesBlocked(A,1,row,1,col,&y[0][0],INSERT_VALUES);CHKERRQ(ierr); 58 ierr = MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 59 ierr = MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 60 61 62 ierr = PetscOptionsHasName(NULL,NULL,"-zero_rows",&flg);CHKERRQ(ierr); 63 if (flg) { 64 col[0] = rstart*bs+0; 65 col[1] = rstart*bs+1; 66 col[2] = rstart*bs+2; 67 ierr = MatZeroRows(A,3,col,one,0,0);CHKERRQ(ierr); 68 } 69 70 ierr = MatView(A,PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr); 71 72 ierr = MatDestroy(&A);CHKERRQ(ierr); 73 ierr = PetscFinalize(); 74 return ierr; 75 } 76 77 78 /*TEST 79 80 test: 81 filter: grep -v "MPI processes" 82 83 test: 84 suffix: 4 85 nsize: 3 86 args: -ass_extern 87 filter: grep -v "MPI processes" 88 89 test: 90 suffix: 5 91 nsize: 3 92 args: -ass_extern -zero_rows 93 filter: grep -v "MPI processes" 94 95 TEST*/ 96