1471cc821SHong Zhang #define PETSCMAT_DLL 2471cc821SHong Zhang 3471cc821SHong Zhang #include "mpisbaij.h" /*I "petscmat.h" I*/ 4949f5904SShri Abhyankar #include "../src/mat/impls/aij/mpi/mpiaij.h" 5949f5904SShri Abhyankar #include "private/matimpl.h" 6949f5904SShri Abhyankar #include "petscmat.h" 7471cc821SHong Zhang 8471cc821SHong Zhang EXTERN_C_BEGIN 9471cc821SHong Zhang #undef __FUNCT__ 10471cc821SHong Zhang #define __FUNCT__ "MatConvert_MPIAIJ_MPISBAIJ" 11471cc821SHong Zhang PetscErrorCode PETSCMAT_DLLEXPORT MatConvert_MPIAIJ_MPISBAIJ(Mat A, MatType newtype,MatReuse reuse,Mat *newmat) 12471cc821SHong Zhang { 13471cc821SHong Zhang PetscErrorCode ierr; 14949f5904SShri Abhyankar Mat M; 15*549719c3SShri Abhyankar Mat_MPIAIJ *mpimat = (Mat_MPIAIJ*)A->data; 16*549719c3SShri Abhyankar Mat_SeqAIJ *Aa = (Mat_SeqAIJ*)mpimat->A->data,*Ba = (Mat_SeqAIJ*)mpimat->B->data; 17949f5904SShri Abhyankar PetscInt *d_nnz,*o_nnz; 18949f5904SShri Abhyankar PetscInt i,j,k,nz; 19949f5904SShri Abhyankar PetscInt m,n,lm,ln; 20949f5904SShri Abhyankar PetscInt rstart,rend; 21949f5904SShri Abhyankar const PetscScalar *vwork; 22949f5904SShri Abhyankar const PetscInt *cwork; 23471cc821SHong Zhang 24471cc821SHong Zhang PetscFunctionBegin; 25949f5904SShri Abhyankar ierr = MatGetSize(A,&m,&n);CHKERRQ(ierr); 26c4688eafSJed Brown ierr = MatGetLocalSize(A,&lm,&ln);CHKERRQ(ierr); 271667e675SShri Abhyankar ierr = PetscMalloc2(lm*sizeof(PetscInt),PetscInt,&d_nnz,lm*sizeof(PetscInt),PetscInt,&o_nnz);CHKERRQ(ierr); 28949f5904SShri Abhyankar 29949f5904SShri Abhyankar k = 0; 30949f5904SShri Abhyankar ierr = MatGetOwnershipRange(A,&rstart,&rend);CHKERRQ(ierr); 31949f5904SShri Abhyankar for(i=rstart;i<rend;i++){ 32*549719c3SShri Abhyankar d_nnz[k] = Aa->i[i+1-rstart] - Aa->diag[i-rstart]; 33*549719c3SShri Abhyankar o_nnz[k] = Ba->i[i+1-rstart] - Ba->i[i-rstart]; 34949f5904SShri Abhyankar k++; 35949f5904SShri Abhyankar } 3687f3aed4SHong Zhang 37949f5904SShri Abhyankar ierr = MatCreate(((PetscObject)A)->comm,&M);CHKERRQ(ierr); 38949f5904SShri Abhyankar ierr = MatSetSizes(M,lm,ln,m,n);CHKERRQ(ierr); 39949f5904SShri Abhyankar ierr = MatSetType(M,newtype);CHKERRQ(ierr); 40949f5904SShri Abhyankar ierr = MatMPISBAIJSetPreallocation(M,1,0,d_nnz,0,o_nnz);CHKERRQ(ierr); 41949f5904SShri Abhyankar 421667e675SShri Abhyankar ierr = PetscFree2(d_nnz,o_nnz);CHKERRQ(ierr); 43949f5904SShri Abhyankar 44949f5904SShri Abhyankar for(i=rstart;i<rend;i++){ 45949f5904SShri Abhyankar ierr = MatGetRow(A,i,&nz,&cwork,&vwork);CHKERRQ(ierr); 4687f3aed4SHong Zhang j = 0; 4787f3aed4SHong Zhang while (cwork[j] < i){ j++; nz--;} 4887f3aed4SHong Zhang ierr = MatSetValues(M,1,&i,nz,cwork+j,vwork+j,INSERT_VALUES);CHKERRQ(ierr); 49949f5904SShri Abhyankar ierr = MatRestoreRow(A,i,&nz,&cwork,&vwork);CHKERRQ(ierr); 50949f5904SShri Abhyankar k++; 51949f5904SShri Abhyankar } 52949f5904SShri Abhyankar ierr = MatAssemblyBegin(M,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 53949f5904SShri Abhyankar ierr = MatAssemblyEnd(M,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 54949f5904SShri Abhyankar 55949f5904SShri Abhyankar if (A->hermitian){ 56949f5904SShri Abhyankar ierr = MatSetOption(M,MAT_HERMITIAN,PETSC_TRUE);CHKERRQ(ierr); 57949f5904SShri Abhyankar } 58949f5904SShri Abhyankar 59949f5904SShri Abhyankar if (reuse == MAT_REUSE_MATRIX) { 60949f5904SShri Abhyankar ierr = MatHeaderReplace(A,M);CHKERRQ(ierr); 6187f3aed4SHong Zhang } else { 62949f5904SShri Abhyankar *newmat = M; 6387f3aed4SHong Zhang } 64471cc821SHong Zhang PetscFunctionReturn(0); 65471cc821SHong Zhang } 66471cc821SHong Zhang EXTERN_C_END 67