Wrapper functions of MPI communications. More...

#include <mpi.h>
#include <vector>
#include "mptensor/complex.hpp"

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Functions
template<typename C >
C	mptensor::mpi::allreduce_sum (C val, const MPI_Comm &comm)
	Calculate a summation over MPI communicator.

template<typename C >
std::vector< C >	mptensor::mpi::allreduce_vec (const std::vector< C > &vec, const MPI_Comm &comm)
	Calculate a summation of each element of vector over MPI communicator.

template<typename C >
void	mptensor::mpi::allreduce (const C sendbuf, C recvbuf, int count, MPI_Op op, const MPI_Comm &comm)
	Wrapper of MPI_Allreduce.

template<typename C >
void	mptensor::mpi::sendrecv (const C sendbuf, int sendcount, int dest, int sendtag, C recvbuf, int recvcount, int source, int recvtag, const MPI_Comm &comm)
	Wrapper of MPI_Sendrecv.

template<typename C >
void	mptensor::mpi::sendrecv (const std::vector< C > &send_vec, int dest, int sendtag, std::vector< C > &recv_vec, int source, int recvtag, const MPI_Comm &comm)
	Wrapper of MPI_Sendrecv for std::vector.

template<typename C >
void	mptensor::mpi::alltoall (const C sendbuf, int sendcount, C recvbuf, int recvcount, const MPI_Comm &comm)
	Wrapper of MPI_Alltoall.

template<typename C >
void	mptensor::mpi::alltoallv (const C sendbuf, const int sendcounts, const int sdispls, C recvbuf, const int recvcounts, const int rdispls, const MPI_Comm &comm)
	Wrapper of MPI_Alltoallv.

template<typename C >
void	mptensor::mpi::bcast (C *buffer, int count, int root, const MPI_Comm &comm)
	Wrapper of MPI_Bcast.

Variables
template<typename C >
MPI_Datatype	mptensor::mpi::mpi_datatype = MPI_DATATYPE_NULL
	Template variable for MPI Datatype.

Detailed Description

Wrapper functions of MPI communications.

Author: Satoshi Morita morit.nosp@m.a@is.nosp@m.sp.u-.nosp@m.toky.nosp@m.o.ac..nosp@m.jp

This header file assumes the MPI environment.

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