1c4762a1bSJed Brown 2c4762a1bSJed Brown static char help[] = "Tests MatMPIAIJSetPreallocationCSR()\n\n"; 3c4762a1bSJed Brown 4c4762a1bSJed Brown /* 5c4762a1bSJed Brown Include "petscmat.h" so that we can use matrices. Note that this file 6c4762a1bSJed Brown automatically includes: 7c4762a1bSJed Brown petscsys.h - base PETSc routines petscvec.h - vectors 8c4762a1bSJed Brown petscmat.h - matrices 9c4762a1bSJed Brown petscis.h - index sets 10c4762a1bSJed Brown petscviewer.h - viewers 11c4762a1bSJed Brown */ 12c4762a1bSJed Brown #include <petscmat.h> 13c4762a1bSJed Brown 14c4762a1bSJed Brown int main(int argc,char **args) 15c4762a1bSJed Brown { 16c4762a1bSJed Brown Mat A; 17c4762a1bSJed Brown PetscInt *ia,*ja; 18c4762a1bSJed Brown PetscMPIInt rank,size; 19c4762a1bSJed Brown 20*327415f7SBarry Smith PetscFunctionBeginUser; 219566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc,&args,(char*)0,help)); 229566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD,&size)); 23be096a46SBarry Smith PetscCheck(size == 4,PETSC_COMM_WORLD,PETSC_ERR_WRONG_MPI_SIZE,"Must run with 4 processors"); 249566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD,&rank)); 25c4762a1bSJed Brown 269566063dSJacob Faibussowitsch PetscCall(PetscMalloc1(5,&ia)); 279566063dSJacob Faibussowitsch PetscCall(PetscMalloc1(16,&ja)); 28dd400576SPatrick Sanan if (rank == 0) { 29c4762a1bSJed Brown ja[0] = 1; ja[1] = 4; ja[2] = 0; ja[3] = 2; ja[4] = 5; ja[5] = 1; ja[6] = 3; ja[7] = 6; 30c4762a1bSJed Brown ja[8] = 2; ja[9] = 7; 31c4762a1bSJed Brown ia[0] = 0; ia[1] = 2; ia[2] = 5; ia[3] = 8; ia[4] = 10; 32c4762a1bSJed Brown } else if (rank == 1) { 33c4762a1bSJed Brown ja[0] = 0; ja[1] = 5; ja[2] = 8; ja[3] = 1; ja[4] = 4; ja[5] = 6; ja[6] = 9; ja[7] = 2; 34c4762a1bSJed Brown ja[8] = 5; ja[9] = 7; ja[10] = 10; ja[11] = 3; ja[12] = 6; ja[13] = 11; 35c4762a1bSJed Brown ia[0] = 0; ia[1] = 3; ia[2] = 7; ia[3] = 11; ia[4] = 14; 36c4762a1bSJed Brown } else if (rank == 2) { 37c4762a1bSJed Brown ja[0] = 4; ja[1] = 9; ja[2] = 12; ja[3] = 5; ja[4] = 8; ja[5] = 10; ja[6] = 13; ja[7] = 6; 38c4762a1bSJed Brown ja[8] = 9; ja[9] = 11; ja[10] = 14; ja[11] = 7; ja[12] = 10; ja[13] = 15; 39c4762a1bSJed Brown ia[0] = 0; ia[1] = 3; ia[2] = 7; ia[3] = 11; ia[4] = 14; 40c4762a1bSJed Brown } else { 41c4762a1bSJed Brown ja[0] = 8; ja[1] = 13; ja[2] = 9; ja[3] = 12; ja[4] = 14; ja[5] = 10; ja[6] = 13; ja[7] = 15; 42c4762a1bSJed Brown ja[8] = 11; ja[9] = 14; 43c4762a1bSJed Brown ia[0] = 0; ia[1] = 2; ia[2] = 5; ia[3] = 8; ia[4] = 10; 44c4762a1bSJed Brown } 45c4762a1bSJed Brown 469566063dSJacob Faibussowitsch PetscCall(MatCreate(PETSC_COMM_WORLD,&A)); 479566063dSJacob Faibussowitsch PetscCall(MatSetSizes(A,4,4,16,16)); 489566063dSJacob Faibussowitsch PetscCall(MatSetType(A,MATMPIAIJ)); 499566063dSJacob Faibussowitsch PetscCall(MatMPIAIJSetPreallocationCSR(A,ia,ja,NULL)); 509566063dSJacob Faibussowitsch PetscCall(PetscFree(ia)); 519566063dSJacob Faibussowitsch PetscCall(PetscFree(ja)); 529566063dSJacob Faibussowitsch PetscCall(MatView(A,PETSC_VIEWER_STDOUT_WORLD)); 539566063dSJacob Faibussowitsch PetscCall(MatDestroy(&A)); 549566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 55b122ec5aSJacob Faibussowitsch return 0; 56c4762a1bSJed Brown } 57c4762a1bSJed Brown 58c4762a1bSJed Brown /*TEST 59c4762a1bSJed Brown 60c4762a1bSJed Brown test: 61c4762a1bSJed Brown nsize: 4 62c4762a1bSJed Brown 63c4762a1bSJed Brown TEST*/ 64