Reduce_timestep() [4/7]

template<typename T >

void cntr::Reduce_timestep	(	int	tstp,
		int	root,
		herm_matrix< T > &	Gred,
		herm_matrix_timestep_view< T > &	G
	)

MPI reduce for the herm_matrix_timestep_view to a herm_matrix

Purpose

MPI reduce for the herm_matrix_timestep_view to a herm_matrix on rank root. Works for scalar or square-matrix contour objects.

Parameters

tstp	time step
root	Index of root
Gred	The reduced herm_matrix on rank root.
G	The herm_matrix_timestep_view on the individual ranks.

Definition at line 188 of file cntr_mpitools_impl.hpp.

References cntr::herm_matrix< T >::nt(), cntr::herm_matrix_timestep_view< T >::ntau(), cntr::herm_matrix< T >::ntau(), Reduce_timestep(), cntr::herm_matrix_timestep_view< T >::size1(), cntr::herm_matrix< T >::size1(), cntr::herm_matrix_timestep_view< T >::size2(), cntr::herm_matrix< T >::size2(), and cntr::herm_matrix_timestep_view< T >::tstp().

                                    {
    assert(tstp == G.tstp());
    int taskid;
    MPI_Comm_rank(MPI_COMM_WORLD, &taskid);
    if (taskid == root) {
        assert(tstp <= Gred.nt());
        assert(G.ntau() == Gred.ntau());
        assert(G.size1() == Gred.size1());
        assert(G.size2() == Gred.size2());
    }

    bool check_tstp = (taskid == root);
    herm_matrix_timestep_view<T> Gred_tmp(tstp, Gred, check_tstp);
    Reduce_timestep(tstp, root, Gred_tmp, G);

}

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