1c4762a1bSJed Brown 2c4762a1bSJed Brown static char help[] = "Tests MatMPIAIJSetPreallocationCSR()\n\n"; 3c4762a1bSJed Brown 4c4762a1bSJed Brown /*T 5c4762a1bSJed Brown Concepts: partitioning 6c4762a1bSJed Brown Processors: 4 7c4762a1bSJed Brown T*/ 8c4762a1bSJed Brown 9c4762a1bSJed Brown /* 10c4762a1bSJed Brown Include "petscmat.h" so that we can use matrices. Note that this file 11c4762a1bSJed Brown automatically includes: 12c4762a1bSJed Brown petscsys.h - base PETSc routines petscvec.h - vectors 13c4762a1bSJed Brown petscmat.h - matrices 14c4762a1bSJed Brown petscis.h - index sets 15c4762a1bSJed Brown petscviewer.h - viewers 16c4762a1bSJed Brown */ 17c4762a1bSJed Brown #include <petscmat.h> 18c4762a1bSJed Brown 19c4762a1bSJed Brown int main(int argc,char **args) 20c4762a1bSJed Brown { 21c4762a1bSJed Brown Mat A; 22c4762a1bSJed Brown PetscInt *ia,*ja; 23c4762a1bSJed Brown PetscErrorCode ierr; 24c4762a1bSJed Brown PetscMPIInt rank,size; 25c4762a1bSJed Brown 26c4762a1bSJed Brown ierr = PetscInitialize(&argc,&args,(char*)0,help);if (ierr) return ierr; 27ffc4695bSBarry Smith ierr = MPI_Comm_size(PETSC_COMM_WORLD,&size);CHKERRMPI(ierr); 28*2c71b3e2SJacob Faibussowitsch PetscCheckFalse(size != 4,PETSC_COMM_WORLD,PETSC_ERR_WRONG_MPI_SIZE,"Must run with 4 processors"); 29ffc4695bSBarry Smith ierr = MPI_Comm_rank(PETSC_COMM_WORLD,&rank);CHKERRMPI(ierr); 30c4762a1bSJed Brown 31c4762a1bSJed Brown ierr = PetscMalloc1(5,&ia);CHKERRQ(ierr); 32c4762a1bSJed Brown ierr = PetscMalloc1(16,&ja);CHKERRQ(ierr); 33dd400576SPatrick Sanan if (rank == 0) { 34c4762a1bSJed 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; 35c4762a1bSJed Brown ja[8] = 2; ja[9] = 7; 36c4762a1bSJed Brown ia[0] = 0; ia[1] = 2; ia[2] = 5; ia[3] = 8; ia[4] = 10; 37c4762a1bSJed Brown } else if (rank == 1) { 38c4762a1bSJed 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; 39c4762a1bSJed Brown ja[8] = 5; ja[9] = 7; ja[10] = 10; ja[11] = 3; ja[12] = 6; ja[13] = 11; 40c4762a1bSJed Brown ia[0] = 0; ia[1] = 3; ia[2] = 7; ia[3] = 11; ia[4] = 14; 41c4762a1bSJed Brown } else if (rank == 2) { 42c4762a1bSJed 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; 43c4762a1bSJed Brown ja[8] = 9; ja[9] = 11; ja[10] = 14; ja[11] = 7; ja[12] = 10; ja[13] = 15; 44c4762a1bSJed Brown ia[0] = 0; ia[1] = 3; ia[2] = 7; ia[3] = 11; ia[4] = 14; 45c4762a1bSJed Brown } else { 46c4762a1bSJed 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; 47c4762a1bSJed Brown ja[8] = 11; ja[9] = 14; 48c4762a1bSJed Brown ia[0] = 0; ia[1] = 2; ia[2] = 5; ia[3] = 8; ia[4] = 10; 49c4762a1bSJed Brown } 50c4762a1bSJed Brown 51c4762a1bSJed Brown ierr = MatCreate(PETSC_COMM_WORLD,&A);CHKERRQ(ierr); 52c4762a1bSJed Brown ierr = MatSetSizes(A,4,4,16,16);CHKERRQ(ierr); 53c4762a1bSJed Brown ierr = MatSetType(A,MATMPIAIJ);CHKERRQ(ierr); 54c4762a1bSJed Brown ierr = MatMPIAIJSetPreallocationCSR(A,ia,ja,NULL);CHKERRQ(ierr); 55c4762a1bSJed Brown ierr = PetscFree(ia);CHKERRQ(ierr); 56c4762a1bSJed Brown ierr = PetscFree(ja);CHKERRQ(ierr); 57c4762a1bSJed Brown ierr = MatView(A,PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr); 58c4762a1bSJed Brown ierr = MatDestroy(&A);CHKERRQ(ierr); 59c4762a1bSJed Brown ierr = PetscFinalize(); 60c4762a1bSJed Brown return ierr; 61c4762a1bSJed Brown } 62c4762a1bSJed Brown 63c4762a1bSJed Brown /*TEST 64c4762a1bSJed Brown 65c4762a1bSJed Brown test: 66c4762a1bSJed Brown nsize: 4 67c4762a1bSJed Brown 68c4762a1bSJed Brown TEST*/ 69