1 static char help[] = "Testing MatCreateMPIAIJSumSeqAIJ().\n\n"; 2 3 #include <petscmat.h> 4 5 int main(int argc,char **argv) 6 { 7 Mat A,B; 8 MatScalar a[1],alpha; 9 PetscMPIInt size,rank; 10 PetscInt m,n,i,col, prid; 11 12 CHKERRQ(PetscInitialize(&argc,&argv,(char*)0,help)); 13 CHKERRMPI(MPI_Comm_size(PETSC_COMM_WORLD,&size)); 14 CHKERRMPI(MPI_Comm_rank(PETSC_COMM_WORLD,&rank)); 15 prid = size; 16 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-prid",&prid,NULL)); 17 18 m = n = 10*size; 19 CHKERRQ(MatCreate(PETSC_COMM_SELF,&A)); 20 CHKERRQ(MatSetSizes(A,PETSC_DETERMINE,PETSC_DETERMINE,m,n)); 21 CHKERRQ(MatSetType(A,MATSEQAIJ)); 22 CHKERRQ(MatSetUp(A)); 23 24 a[0] = rank+1; 25 for (i=0; i<m-rank; i++) { 26 col = i+rank; 27 CHKERRQ(MatSetValues(A,1,&i,1,&col,a,INSERT_VALUES)); 28 } 29 CHKERRQ(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY)); 30 CHKERRQ(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY)); 31 32 if (rank == prid) { 33 CHKERRQ(PetscPrintf(PETSC_COMM_SELF,"[%d] A: \n",rank)); 34 CHKERRQ(MatView(A,PETSC_VIEWER_STDOUT_SELF)); 35 } 36 37 /* Test MatCreateMPIAIJSumSeqAIJ */ 38 CHKERRQ(MatCreateMPIAIJSumSeqAIJ(PETSC_COMM_WORLD,A,PETSC_DECIDE,PETSC_DECIDE,MAT_INITIAL_MATRIX,&B)); 39 40 /* Test MAT_REUSE_MATRIX */ 41 alpha = 0.1; 42 for (i=0; i<3; i++) { 43 CHKERRQ(MatScale(A,alpha)); 44 CHKERRQ(MatCreateMPIAIJSumSeqAIJ(PETSC_COMM_WORLD,A,PETSC_DECIDE,PETSC_DECIDE,MAT_REUSE_MATRIX,&B)); 45 } 46 CHKERRQ(MatView(B, PETSC_VIEWER_STDOUT_WORLD)); 47 CHKERRQ(MatDestroy(&B)); 48 CHKERRQ(MatDestroy(&A)); 49 CHKERRQ(PetscFinalize()); 50 return 0; 51 } 52 53 /*TEST 54 55 test: 56 nsize: 3 57 filter: grep -v "MPI processes" 58 59 test: 60 suffix: 2 61 filter: grep -v "MPI processes" 62 63 TEST*/ 64