1 2 static char help[] = "Tests various routines in MatMPIBAIJ format.\n"; 3 4 #include <petscmat.h> 5 6 int main(int argc,char **args) 7 { 8 Mat A; 9 PetscInt m=2,bs=1,M,row,col,start,end,i,j,k; 10 PetscMPIInt rank,size; 11 PetscScalar data=100; 12 PetscBool flg; 13 14 PetscCall(PetscInitialize(&argc,&args,(char*)0,help)); 15 PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD,&rank)); 16 PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD,&size)); 17 18 /* Test MatSetValues() and MatGetValues() */ 19 PetscCall(PetscOptionsGetInt(NULL,NULL,"-mat_block_size",&bs,NULL)); 20 PetscCall(PetscOptionsGetInt(NULL,NULL,"-mat_size",&m,NULL)); 21 22 M = m*bs*size; 23 PetscCall(MatCreateBAIJ(PETSC_COMM_WORLD,bs,PETSC_DECIDE,PETSC_DECIDE,M,M,PETSC_DECIDE,NULL,PETSC_DECIDE,NULL,&A)); 24 25 PetscCall(MatGetOwnershipRange(A,&start,&end)); 26 PetscCall(PetscOptionsHasName(NULL,NULL,"-column_oriented",&flg)); 27 if (flg) { 28 PetscCall(MatSetOption(A,MAT_ROW_ORIENTED,PETSC_FALSE)); 29 } 30 31 /* inproc assembly */ 32 for (row=start; row<end; row++) { 33 for (col=start; col<end; col++,data+=1) { 34 PetscCall(MatSetValues(A,1,&row,1,&col,&data,INSERT_VALUES)); 35 } 36 } 37 PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY)); 38 PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY)); 39 40 /* offproc assembly */ 41 data = 5.0; 42 row = (M+start-1)%M; 43 for (col=0; col<M; col++) { 44 PetscCall(MatSetValues(A,1,&row,1,&col,&data,ADD_VALUES)); 45 } 46 PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY)); 47 PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY)); 48 49 /* Test MatSetValuesBlocked() */ 50 PetscCall(PetscOptionsHasName(NULL,NULL,"-test_setvaluesblocked",&flg)); 51 if (flg) { 52 PetscScalar *bval; 53 row /= bs; 54 col = start/bs; 55 PetscCall(PetscMalloc1(bs*bs,&bval)); 56 k = 1; 57 /* row oriented - default */ 58 for (i=0; i<bs; i++) { 59 for (j=0; j<bs; j++) { 60 bval[i*bs+j] = (PetscScalar)k; k++; 61 } 62 } 63 PetscCall(MatSetValuesBlocked(A,1,&row,1,&col,bval,INSERT_VALUES)); 64 PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY)); 65 PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY)); 66 PetscCall(PetscFree(bval)); 67 } 68 69 PetscCall(MatView(A,PETSC_VIEWER_STDOUT_WORLD)); 70 PetscCall(MatDestroy(&A)); 71 PetscCall(PetscFinalize()); 72 return 0; 73 } 74 75 /*TEST 76 77 test: 78 suffix: 1 79 nsize: 3 80 args: -mat_block_size 2 -test_setvaluesblocked 81 82 test: 83 suffix: 2 84 nsize: 3 85 args: -mat_block_size 2 -test_setvaluesblocked -column_oriented 86 87 test: 88 suffix: 3 89 nsize: 3 90 args: -mat_block_size 1 -test_setvaluesblocked 91 92 test: 93 suffix: 4 94 nsize: 3 95 args: -mat_block_size 1 -test_setvaluesblocked -column_oriented 96 97 TEST*/ 98