1c4762a1bSJed Brown static char help[] = "Test MatCreateRedundantMatrix for rectangular matrix.\n\ 2c4762a1bSJed Brown Contributed by Jose E. Roman, July 2017\n\n"; 3c4762a1bSJed Brown 4c4762a1bSJed Brown #include <petscmat.h> 5c4762a1bSJed Brown int main(int argc,char **args) 6c4762a1bSJed Brown { 7c4762a1bSJed Brown Mat A,B; 8c4762a1bSJed Brown PetscErrorCode ierr; 9c4762a1bSJed Brown PetscInt m=3,n=4,i,nsubcomm; 10c4762a1bSJed Brown PetscMPIInt size,rank; 11c4762a1bSJed Brown 12c4762a1bSJed Brown ierr = PetscInitialize(&argc,&args,(char*)0,help);if (ierr) return ierr; 13ffc4695bSBarry Smith ierr = MPI_Comm_size(PETSC_COMM_WORLD, &size);CHKERRMPI(ierr); 14ffc4695bSBarry Smith ierr = MPI_Comm_rank(PETSC_COMM_WORLD, &rank);CHKERRMPI(ierr); 15c4762a1bSJed Brown 16c4762a1bSJed Brown nsubcomm = size; 17c4762a1bSJed Brown ierr = PetscOptionsGetInt(NULL,NULL,"-nsubcomm",&nsubcomm,NULL);CHKERRQ(ierr); 18c4762a1bSJed Brown 19c4762a1bSJed Brown ierr = MatCreate(PETSC_COMM_WORLD, &A);CHKERRQ(ierr); 20c4762a1bSJed Brown ierr = MatSetSizes(A, m, n, PETSC_DETERMINE, PETSC_DETERMINE);CHKERRQ(ierr); 21c4762a1bSJed Brown ierr = MatSetType(A, MATAIJ);CHKERRQ(ierr); 22c4762a1bSJed Brown ierr = MatSetFromOptions(A);CHKERRQ(ierr); 23c4762a1bSJed Brown ierr = MatSetUp(A);CHKERRQ(ierr); 24c4762a1bSJed Brown 25*dd400576SPatrick Sanan if (rank == 0) { 26c4762a1bSJed Brown for (i=0;i<size*PetscMin(m,n);i++) { 27c4762a1bSJed Brown ierr = MatSetValue(A, i, i, 1.0, INSERT_VALUES);CHKERRQ(ierr); 28c4762a1bSJed Brown } 29c4762a1bSJed Brown } 30c4762a1bSJed Brown ierr = MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 31c4762a1bSJed Brown ierr = MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 32c4762a1bSJed Brown ierr = MatView(A,PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr); 33c4762a1bSJed Brown 34c4762a1bSJed Brown ierr = MatCreateRedundantMatrix(A, nsubcomm, MPI_COMM_NULL, MAT_INITIAL_MATRIX, &B);CHKERRQ(ierr); 35c4762a1bSJed Brown if (nsubcomm==size) { /* B is a sequential matrix */ 36*dd400576SPatrick Sanan if (rank == 0) { 37c4762a1bSJed Brown ierr = MatView(B,PETSC_VIEWER_STDOUT_SELF);CHKERRQ(ierr); 38c4762a1bSJed Brown } 39c4762a1bSJed Brown } else { 40c4762a1bSJed Brown MPI_Comm comm; 41c4762a1bSJed Brown ierr = PetscObjectGetComm((PetscObject)B,&comm);CHKERRQ(ierr); 42c4762a1bSJed Brown ierr = MatView(B,PETSC_VIEWER_STDOUT_(comm));CHKERRQ(ierr); 43c4762a1bSJed Brown } 44c4762a1bSJed Brown 45c4762a1bSJed Brown ierr = MatDestroy(&A);CHKERRQ(ierr); 46c4762a1bSJed Brown ierr = MatDestroy(&B);CHKERRQ(ierr); 47c4762a1bSJed Brown ierr = PetscFinalize(); 48c4762a1bSJed Brown return ierr; 49c4762a1bSJed Brown } 50c4762a1bSJed Brown 51c4762a1bSJed Brown /*TEST 52c4762a1bSJed Brown 53c4762a1bSJed Brown test: 54c4762a1bSJed Brown 55c4762a1bSJed Brown test: 56c4762a1bSJed Brown suffix: 2 57c4762a1bSJed Brown nsize: 3 58c4762a1bSJed Brown 59c4762a1bSJed Brown test: 60c4762a1bSJed Brown suffix: baij 61c4762a1bSJed Brown args: -mat_type baij 62c4762a1bSJed Brown 63c4762a1bSJed Brown test: 64c4762a1bSJed Brown suffix: baij_2 65c4762a1bSJed Brown nsize: 3 66c4762a1bSJed Brown args: -mat_type baij 67c4762a1bSJed Brown 68c4762a1bSJed Brown test: 69c4762a1bSJed Brown suffix: dense 70c4762a1bSJed Brown args: -mat_type dense 71c4762a1bSJed Brown 72c4762a1bSJed Brown test: 73c4762a1bSJed Brown suffix: dense_2 74c4762a1bSJed Brown nsize: 3 75c4762a1bSJed Brown args: -mat_type dense 76c4762a1bSJed Brown 77c4762a1bSJed Brown TEST*/ 78