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