Beispiel #1
0
inline void mixed_gemm_local_part_nn (
        const double alpha,
        const SpParMat<index_type, value_type, SpDCCols<index_type, value_type> > &A,
        const El::DistMatrix<value_type, El::STAR, El::STAR> &S,
        const double beta,
        std::vector<value_type> &local_matrix) {

    typedef SpDCCols< index_type, value_type > col_t;
    typedef SpParMat< index_type, value_type, col_t > matrix_type;
    matrix_type &_A = const_cast<matrix_type&>(A);
    col_t &data = _A.seq();

    //FIXME
    local_matrix.resize(S.Width() * data.getnrow(), 0);
    size_t cb_col_offset = utility::cb_my_col_offset(A);

    for(typename col_t::SpColIter col = data.begcol();
        col != data.endcol(); col++) {
        for(typename col_t::SpColIter::NzIter nz = data.begnz(col);
            nz != data.endnz(col); nz++) {

            // we want local index here to fill local dense matrix
            index_type rowid = nz.rowid();
            // column needs to be global
            index_type colid = col.colid() + cb_col_offset;

            // compute application of S to yield a partial row in the result.
            for(size_t bcol = 0; bcol < S.Width(); ++bcol) {
                local_matrix[rowid * S.Width() + bcol] +=
                        alpha * S.Get(colid, bcol) * nz.value();
            }
        }
    }
}
void compare_result(size_t rank, DistMatrixType &expected_A,
                    El::DistMatrix<double, El::STAR, El::STAR> &result) {

    col_t &data = expected_A.seq();

    const size_t my_row_offset = skylark::utility::cb_my_row_offset(expected_A);
    const size_t my_col_offset = skylark::utility::cb_my_col_offset(expected_A);

    for(typename col_t::SpColIter col = data.begcol();
        col != data.endcol(); col++) {
        for(typename col_t::SpColIter::NzIter nz = data.begnz(col);
            nz != data.endnz(col); nz++) {

            const size_t rowid = nz.rowid()  + my_row_offset;
            const size_t colid = col.colid() + my_col_offset;
            const double value = nz.value();

            if(value != result.GetLocal(rowid, colid)) {
                std::ostringstream os;
                os << rank << ": " << rowid << ", " << colid << ": "
                   << value << " != "
                   << result.GetLocal(rowid, colid) << std::endl;
                std::cout << os.str() << std::flush;
                BOOST_FAIL("Result application not as expected");
            }
        }
    }
}