mirror of
https://github.com/triqs/dft_tools
synced 2024-11-01 19:53:45 +01:00
9c129cb224
- done Matsubara freq for testing and rereading. - TODO: generalize to other meshes. - draft for multi var gf
73 lines
2.6 KiB
C++
73 lines
2.6 KiB
C++
/*******************************************************************************
|
|
*
|
|
* TRIQS: a Toolbox for Research in Interacting Quantum Systems
|
|
*
|
|
* Copyright (C) 2014 by O. Parcollet
|
|
*
|
|
* TRIQS is free software: you can redistribute it and/or modify it under the
|
|
* terms of the GNU General Public License as published by the Free Software
|
|
* Foundation, either version 3 of the License, or (at your option) any later
|
|
* version.
|
|
*
|
|
* TRIQS 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 General Public License for more
|
|
* details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with
|
|
* TRIQS. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
******************************************************************************/
|
|
#pragma once
|
|
#include "./base.hpp"
|
|
#include <boost/mpi.hpp>
|
|
|
|
#define TRIQS_MPI_IMPLEMENTED_VIA_BOOST using triqs_mpi_via_boost = void;
|
|
|
|
namespace triqs {
|
|
namespace mpi {
|
|
|
|
// implement the communicator cast
|
|
inline communicator::operator boost::mpi::communicator() const {
|
|
return boost::mpi::communicator(_com, boost::mpi::comm_duplicate);
|
|
// duplicate policy : cf http://www.boost.org/doc/libs/1_56_0/doc/html/boost/mpi/comm_create_kind.html
|
|
}
|
|
|
|
// reverse : construct (implicit) the communicator from the boost one.
|
|
inline communicator::communicator(boost::mpi::communicator c) :_com(c) {}
|
|
|
|
/** ------------------------------------------------------------
|
|
* Type which we use boost::mpi
|
|
* ---------------------------------------------------------- **/
|
|
|
|
template <typename T> struct mpi_impl_boost_mpi {
|
|
|
|
static T invoke(tag::reduce, communicator c, T const &a, int root) {
|
|
T b;
|
|
boost::mpi::reduce(c, a, b, std::c14::plus<>(), root);
|
|
return b;
|
|
}
|
|
|
|
static T invoke(tag::allreduce, communicator c, T const &a, int root) {
|
|
T b;
|
|
boost::mpi::all_reduce(c, a, b, std::c14::plus<>());
|
|
return b;
|
|
}
|
|
|
|
static void reduce_in_place(communicator c, T &a, int root) { boost::mpi::reduce(c, a, a, std::c14::plus<>(), root); }
|
|
static void broadcast(communicator c, T &a, int root) { boost::mpi::broadcast(c, a, root); }
|
|
|
|
static void scatter(communicator c, T const &, int root) = delete;
|
|
static void gather(communicator c, T const &, int root) = delete;
|
|
static void allgather(communicator c, T const &, int root) = delete;
|
|
};
|
|
|
|
// If type T has a mpi_implementation nested struct, then it is mpi_impl<T>.
|
|
template <typename T> struct mpi_impl<T, typename T::triqs_mpi_via_boost> : mpi_impl_boost_mpi<T> {};
|
|
|
|
}}//namespace
|
|
|
|
|
|
|
|
|