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; 18*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscOptionsGetString(NULL,NULL,"-f",file,sizeof(file),&flg)); 19*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscViewerBinaryOpen(PETSC_COMM_WORLD,file,FILE_MODE_READ,&viewer)); 20c4762a1bSJed Brown 21*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatCreate(PETSC_COMM_WORLD,&BAIJ)); 22*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatSetType(BAIJ,MATMPIBAIJ)); 23*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatLoad(BAIJ,viewer)); 24*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscViewerDestroy(&viewer)); 25c4762a1bSJed Brown 26*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscViewerBinaryOpen(PETSC_COMM_WORLD,file,FILE_MODE_READ,&viewer)); 27*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatCreate(PETSC_COMM_WORLD,&SBAIJ)); 28*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatSetType(SBAIJ,MATMPISBAIJ)); 29*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatLoad(SBAIJ,viewer)); 30*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscViewerDestroy(&viewer)); 31c4762a1bSJed Brown 32*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatGetSize(BAIJ,&M,&N)); 33c4762a1bSJed Brown issize = M/4; 34*5f80ce2aSJacob Faibussowitsch CHKERRQ(ISCreateStride(PETSC_COMM_SELF,issize,0,1,&isrow)); 35c4762a1bSJed Brown irow[0] = irow[1] = isrow; 36c4762a1bSJed Brown issize = N/2; 37*5f80ce2aSJacob Faibussowitsch CHKERRQ(ISCreateStride(PETSC_COMM_SELF,issize,0,1,&iscol)); 38c4762a1bSJed Brown icol[0] = icol[1] = iscol; 39*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatCreateSubMatrices(BAIJ,n,irow,icol,MAT_INITIAL_MATRIX,&subBAIJ)); 40*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatCreateSubMatrices(BAIJ,n,irow,icol,MAT_REUSE_MATRIX,&subBAIJ)); 41c4762a1bSJed Brown 42c4762a1bSJed Brown /* irow and icol must be same for SBAIJ matrices! */ 43c4762a1bSJed Brown icol[0] = icol[1] = isrow; 44*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatCreateSubMatrices(SBAIJ,n,irow,icol,MAT_INITIAL_MATRIX,&subSBAIJ)); 45*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatCreateSubMatrices(SBAIJ,n,irow,icol,MAT_REUSE_MATRIX,&subSBAIJ)); 46c4762a1bSJed Brown 47*5f80ce2aSJacob Faibussowitsch CHKERRMPI(MPI_Comm_rank(PETSC_COMM_WORLD,&rank)); 48dd400576SPatrick Sanan if (rank == 0) { 49*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatView(subBAIJ[0],PETSC_VIEWER_STDOUT_SELF)); 50*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatView(subSBAIJ[0],PETSC_VIEWER_STDOUT_SELF)); 51c4762a1bSJed Brown } 52c4762a1bSJed Brown 53c4762a1bSJed Brown /* Free data structures */ 54*5f80ce2aSJacob Faibussowitsch CHKERRQ(ISDestroy(&isrow)); 55*5f80ce2aSJacob Faibussowitsch CHKERRQ(ISDestroy(&iscol)); 56*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatDestroySubMatrices(n,&subBAIJ)); 57*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatDestroySubMatrices(n,&subSBAIJ)); 58*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatDestroy(&BAIJ)); 59*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatDestroy(&SBAIJ)); 60c4762a1bSJed Brown 61c4762a1bSJed Brown ierr = PetscFinalize(); 62c4762a1bSJed Brown return ierr; 63c4762a1bSJed Brown } 64