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