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 PetscCall(PetscInitialize(&argc,&argv,(char*)0,help)); 13 PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD,&size)); 14 PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD,&rank)); 15 prid = size; 16 PetscCall(PetscOptionsGetInt(NULL,NULL,"-prid",&prid,NULL)); 17 18 m = n = 10*size; 19 PetscCall(MatCreate(PETSC_COMM_SELF,&A)); 20 PetscCall(MatSetSizes(A,PETSC_DETERMINE,PETSC_DETERMINE,m,n)); 21 PetscCall(MatSetType(A,MATSEQAIJ)); 22 PetscCall(MatSetUp(A)); 23 24 a[0] = rank+1; 25 for (i=0; i<m-rank; i++) { 26 col = i+rank; 27 PetscCall(MatSetValues(A,1,&i,1,&col,a,INSERT_VALUES)); 28 } 29 PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY)); 30 PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY)); 31 32 if (rank == prid) { 33 PetscCall(PetscPrintf(PETSC_COMM_SELF,"[%d] A: \n",rank)); 34 PetscCall(MatView(A,PETSC_VIEWER_STDOUT_SELF)); 35 } 36 37 /* Test MatCreateMPIAIJSumSeqAIJ */ 38 PetscCall(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 PetscCall(MatScale(A,alpha)); 44 PetscCall(MatCreateMPIAIJSumSeqAIJ(PETSC_COMM_WORLD,A,PETSC_DECIDE,PETSC_DECIDE,MAT_REUSE_MATRIX,&B)); 45 } 46 PetscCall(MatView(B, PETSC_VIEWER_STDOUT_WORLD)); 47 PetscCall(MatDestroy(&B)); 48 PetscCall(MatDestroy(&A)); 49 PetscCall(PetscFinalize()); 50 return 0; 51 } 52 53 /*TEST 54 55 test: 56 nsize: 3 57 filter: grep -v " MPI process" 58 59 test: 60 suffix: 2 61 filter: grep -v " MPI process" 62 63 TEST*/ 64