mpi_tool.hpp

Go to the documentation of this file.

/*
  mptensor - Parallel Library for Tensor Network Methods
 
  Copyright 2016 Satoshi Morita
 
  mptensor is free software: you can redistribute it and/or modify it
  under the terms of the GNU Lesser General Public License as
  published by the Free Software Foundation, either version 3 of the
  License, or (at your option) any later version.
 
  mptensor is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.
 
  You should have received a copy of the GNU Lesser General Public
  License along with mptensor.  If not, see
  <https://www.gnu.org/licenses/>.
*/
 
#ifndef _MPI_TOOL_HPP_
#define _MPI_TOOL_HPP_
 
#ifdef _NO_MPI
typedef int mpi_comm;
extern const mpi_comm MPI_COMM_WORLD;
 
#else
#include <mpi.h>
typedef MPI_Comm mpi_comm;
 
#endif
 
void mpi_finalize();
void mpi_init(int argc, char **argv);
void mpi_info(const mpi_comm &comm, int &rank, int &size, bool &is_root);
void mpi_barrier(const mpi_comm &comm);
double mpi_reduce_max(double send, const mpi_comm &comm);
 
#endif  // _MPI_TOOL_HPP_