/usr/include/sc/util/group/memmtmpi.h is in libsc-dev 2.3.1-16build1.
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// memmtmpi.h
// based on memmpi.h
//
// Copyright (C) 1996 Limit Point Systems, Inc.
//
// Author: Curtis Janssen <cljanss@limitpt.com>
// Maintainer: LPS
//
// This file is part of the SC Toolkit.
//
// The SC Toolkit is free software; you can redistribute it and/or modify
// it under the terms of the GNU Library General Public License as published by
// the Free Software Foundation; either version 2, or (at your option)
// any later version.
//
// The SC Toolkit 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 Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public License
// along with the SC Toolkit; see the file COPYING.LIB. If not, write to
// the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
//
// The U.S. Government is granted a limited license as per AL 91-7.
//
#ifdef __GNUC__
#pragma interface
#endif
#ifndef _util_group_memmtmpi_h
#define _util_group_memmtmpi_h
#include <fstream>
#define MPICH_SKIP_MPICXX
#include <mpi.h>
#include <util/group/message.h>
#include <util/group/memamsg.h>
#include <util/group/thread.h>
namespace sc {
class MTMPIThread;
/** This MemoryGrp class requires a MT-safe MPI implementation. The
default MessageGrp must be a MPIMessageGrp. MPI must be safe with respect
to the default ThreadGrp. Alternately, a MessageGrp and a ThreadGrp can be
passed to the constructor. */
class MTMPIMemoryGrp: public ActiveMsgMemoryGrp {
private:
Ref<ThreadGrp> th_;
Ref<ThreadLock> serial_lock_;
int serial_;
int serial(int node);
MPI_Comm comp_comm_;
MPI_Comm comm_comm_;
int req_tag_;
int active_;
unsigned int *nreq_sent_;
unsigned int *nreq_sent_buf_;
MTMPIThread **thread_;
Ref<ThreadLock> print_lock_; // needed for debugging only
std::ofstream hout; // handler out
std::ofstream mout; // main thread out
void init_mtmpimg(MPI_Comm comm, int nthreads);
// parent class pure virtuals
void retrieve_data(void *, int node, int offset, int size, int lock);
void replace_data(void *, int node, int offset, int size, int unlock);
void sum_data(double *data, int node, int doffset, int dsize);
friend class MTMPIThread;
public:
/** Construct a MTMPIMemoryGrp given a MessageGrp, ThreadGrp, and
an MPI communicator. The communicator can be a subset of
MPI_COMM_WORLD, in which case, the MessageGrp must refer to the
same subset. */
MTMPIMemoryGrp(const Ref<MessageGrp>& msg, const Ref<ThreadGrp> &th,
MPI_Comm comm = MPI_COMM_WORLD);
/** Construct a MTMPIMemoryGrp given a KeyVal input object. A
fully thread safe MPI is needed (MPI_THREAD_MULTIPLE). */
MTMPIMemoryGrp(const Ref<KeyVal> &);
~MTMPIMemoryGrp();
void activate();
void deactivate();
void sync();
};
}
#endif
// Local Variables:
// mode: c++
// c-file-style: "CLJ"
// End:
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