1c4762a1bSJed Brown 2c4762a1bSJed Brown static char help[] = "Tests MatCreateSubMatrices() for SBAIJ matrices\n\n"; 3c4762a1bSJed Brown 4c4762a1bSJed Brown #include <petscmat.h> 5c4762a1bSJed Brown 6c4762a1bSJed Brown int main(int argc,char **args) 7c4762a1bSJed Brown { 8c4762a1bSJed Brown Mat BAIJ,SBAIJ,*subBAIJ,*subSBAIJ; 9c4762a1bSJed Brown PetscViewer viewer; 10c4762a1bSJed Brown char file[PETSC_MAX_PATH_LEN]; 11c4762a1bSJed Brown PetscBool flg; 12c4762a1bSJed Brown PetscErrorCode ierr; 13c4762a1bSJed Brown PetscInt n = 2,issize,M,N; 14c4762a1bSJed Brown PetscMPIInt rank; 15c4762a1bSJed Brown IS isrow,iscol,irow[n],icol[n]; 16c4762a1bSJed Brown 17c4762a1bSJed Brown ierr = PetscInitialize(&argc,&args,(char*)0,help);if (ierr) return ierr; 18589a23caSBarry Smith ierr = PetscOptionsGetString(NULL,NULL,"-f",file,sizeof(file),&flg);CHKERRQ(ierr); 19c4762a1bSJed Brown ierr = PetscViewerBinaryOpen(PETSC_COMM_WORLD,file,FILE_MODE_READ,&viewer);CHKERRQ(ierr); 20c4762a1bSJed Brown 21c4762a1bSJed Brown ierr = MatCreate(PETSC_COMM_WORLD,&BAIJ);CHKERRQ(ierr); 22c4762a1bSJed Brown ierr = MatSetType(BAIJ,MATMPIBAIJ);CHKERRQ(ierr); 23c4762a1bSJed Brown ierr = MatLoad(BAIJ,viewer);CHKERRQ(ierr); 24c4762a1bSJed Brown ierr = PetscViewerDestroy(&viewer);CHKERRQ(ierr); 25c4762a1bSJed Brown 26c4762a1bSJed Brown ierr = PetscViewerBinaryOpen(PETSC_COMM_WORLD,file,FILE_MODE_READ,&viewer);CHKERRQ(ierr); 27c4762a1bSJed Brown ierr = MatCreate(PETSC_COMM_WORLD,&SBAIJ);CHKERRQ(ierr); 28c4762a1bSJed Brown ierr = MatSetType(SBAIJ,MATMPISBAIJ);CHKERRQ(ierr); 29c4762a1bSJed Brown ierr = MatLoad(SBAIJ,viewer);CHKERRQ(ierr); 30c4762a1bSJed Brown ierr = PetscViewerDestroy(&viewer);CHKERRQ(ierr); 31c4762a1bSJed Brown 32c4762a1bSJed Brown ierr = MatGetSize(BAIJ,&M,&N);CHKERRQ(ierr); 33c4762a1bSJed Brown issize = M/4; 34c4762a1bSJed Brown ierr = ISCreateStride(PETSC_COMM_SELF,issize,0,1,&isrow);CHKERRQ(ierr); 35c4762a1bSJed Brown irow[0] = irow[1] = isrow; 36c4762a1bSJed Brown issize = N/2; 37c4762a1bSJed Brown ierr = ISCreateStride(PETSC_COMM_SELF,issize,0,1,&iscol);CHKERRQ(ierr); 38c4762a1bSJed Brown icol[0] = icol[1] = iscol; 39c4762a1bSJed Brown ierr = MatCreateSubMatrices(BAIJ,n,irow,icol,MAT_INITIAL_MATRIX,&subBAIJ);CHKERRQ(ierr); 40c4762a1bSJed Brown ierr = MatCreateSubMatrices(BAIJ,n,irow,icol,MAT_REUSE_MATRIX,&subBAIJ);CHKERRQ(ierr); 41c4762a1bSJed Brown 42c4762a1bSJed Brown /* irow and icol must be same for SBAIJ matrices! */ 43c4762a1bSJed Brown icol[0] = icol[1] = isrow; 44c4762a1bSJed Brown ierr = MatCreateSubMatrices(SBAIJ,n,irow,icol,MAT_INITIAL_MATRIX,&subSBAIJ);CHKERRQ(ierr); 45c4762a1bSJed Brown ierr = MatCreateSubMatrices(SBAIJ,n,irow,icol,MAT_REUSE_MATRIX,&subSBAIJ);CHKERRQ(ierr); 46c4762a1bSJed Brown 47*ffc4695bSBarry Smith ierr = MPI_Comm_rank(PETSC_COMM_WORLD,&rank);CHKERRMPI(ierr); 48c4762a1bSJed Brown if (!rank) { 49c4762a1bSJed Brown ierr = MatView(subBAIJ[0],PETSC_VIEWER_STDOUT_SELF);CHKERRQ(ierr); 50c4762a1bSJed Brown ierr = MatView(subSBAIJ[0],PETSC_VIEWER_STDOUT_SELF);CHKERRQ(ierr); 51c4762a1bSJed Brown } 52c4762a1bSJed Brown 53c4762a1bSJed Brown /* Free data structures */ 54c4762a1bSJed Brown ierr = ISDestroy(&isrow);CHKERRQ(ierr); 55c4762a1bSJed Brown ierr = ISDestroy(&iscol);CHKERRQ(ierr); 56c4762a1bSJed Brown ierr = MatDestroySubMatrices(n,&subBAIJ);CHKERRQ(ierr); 57c4762a1bSJed Brown ierr = MatDestroySubMatrices(n,&subSBAIJ);CHKERRQ(ierr); 58c4762a1bSJed Brown ierr = MatDestroy(&BAIJ);CHKERRQ(ierr); 59c4762a1bSJed Brown ierr = MatDestroy(&SBAIJ);CHKERRQ(ierr); 60c4762a1bSJed Brown 61c4762a1bSJed Brown ierr = PetscFinalize(); 62c4762a1bSJed Brown return ierr; 63c4762a1bSJed Brown } 64c4762a1bSJed Brown 65c4762a1bSJed Brown 66