1 static char help[] = "Testing MatCreateMPIAIJWithSplitArrays().\n\n"; 2 3 #include <petscmat.h> 4 5 int main(int argc,char **argv) 6 { 7 Mat A,B; 8 PetscInt i,j,column,*ooj; 9 PetscInt *di,*dj,*oi,*oj,nd; 10 const PetscInt *garray; 11 PetscScalar *oa,*da; 12 PetscScalar value; 13 PetscRandom rctx; 14 PetscErrorCode ierr; 15 PetscBool equal,done; 16 Mat AA,AB; 17 PetscMPIInt size,rank; 18 19 ierr = PetscInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr; 20 CHKERRMPI(MPI_Comm_size(PETSC_COMM_WORLD,&size)); 21 PetscCheckFalse(size == 1,PETSC_COMM_WORLD,PETSC_ERR_ARG_OUTOFRANGE,"Must run with 2 or more processes"); 22 CHKERRMPI(MPI_Comm_rank(PETSC_COMM_WORLD,&rank)); 23 24 /* Create a mpiaij matrix for checking */ 25 CHKERRQ(MatCreateAIJ(PETSC_COMM_WORLD,5,5,PETSC_DECIDE,PETSC_DECIDE,0,NULL,0,NULL,&A)); 26 CHKERRQ(MatSetOption(A,MAT_NEW_NONZERO_LOCATION_ERR,PETSC_FALSE)); 27 CHKERRQ(MatSetUp(A)); 28 CHKERRQ(PetscRandomCreate(PETSC_COMM_WORLD,&rctx)); 29 CHKERRQ(PetscRandomSetFromOptions(rctx)); 30 31 for (i=5*rank; i<5*rank+5; i++) { 32 for (j=0; j<5*size; j++) { 33 CHKERRQ(PetscRandomGetValue(rctx,&value)); 34 column = (PetscInt) (5*size*PetscRealPart(value)); 35 CHKERRQ(PetscRandomGetValue(rctx,&value)); 36 CHKERRQ(MatSetValues(A,1,&i,1,&column,&value,INSERT_VALUES)); 37 } 38 } 39 CHKERRQ(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY)); 40 CHKERRQ(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY)); 41 42 CHKERRQ(MatMPIAIJGetSeqAIJ(A,&AA,&AB,&garray)); 43 CHKERRQ(MatGetRowIJ(AA,0,PETSC_FALSE,PETSC_FALSE,&nd,(const PetscInt**)&di,(const PetscInt**)&dj,&done)); 44 CHKERRQ(MatSeqAIJGetArray(AA,&da)); 45 CHKERRQ(MatGetRowIJ(AB,0,PETSC_FALSE,PETSC_FALSE,&nd,(const PetscInt**)&oi,(const PetscInt**)&oj,&done)); 46 CHKERRQ(MatSeqAIJGetArray(AB,&oa)); 47 48 CHKERRQ(PetscMalloc1(oi[5],&ooj)); 49 CHKERRQ(PetscArraycpy(ooj,oj,oi[5])); 50 /* modify the column entries in the non-diagonal portion back to global numbering */ 51 for (i=0; i<oi[5]; i++) { 52 ooj[i] = garray[ooj[i]]; 53 } 54 55 CHKERRQ(MatCreateMPIAIJWithSplitArrays(PETSC_COMM_WORLD,5,5,PETSC_DETERMINE,PETSC_DETERMINE,di,dj,da,oi,ooj,oa,&B)); 56 CHKERRQ(MatSetUp(B)); 57 CHKERRQ(MatEqual(A,B,&equal)); 58 59 CHKERRQ(MatRestoreRowIJ(AA,0,PETSC_FALSE,PETSC_FALSE,&nd,(const PetscInt**)&di,(const PetscInt**)&dj,&done)); 60 CHKERRQ(MatSeqAIJRestoreArray(AA,&da)); 61 CHKERRQ(MatRestoreRowIJ(AB,0,PETSC_FALSE,PETSC_FALSE,&nd,(const PetscInt**)&oi,(const PetscInt**)&oj,&done)); 62 CHKERRQ(MatSeqAIJRestoreArray(AB,&oa)); 63 64 PetscCheck(equal,PETSC_COMM_SELF,PETSC_ERR_PLIB,"Likely a bug in MatCreateMPIAIJWithSplitArrays()"); 65 66 /* Free spaces */ 67 CHKERRQ(PetscFree(ooj)); 68 CHKERRQ(PetscRandomDestroy(&rctx)); 69 CHKERRQ(MatDestroy(&A)); 70 CHKERRQ(MatDestroy(&B)); 71 CHKERRQ(PetscFree(oj)); 72 ierr = PetscFinalize(); 73 return ierr; 74 } 75 76 /*TEST 77 78 test: 79 nsize: 3 80 81 TEST*/ 82