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# messmpi.h

    00001 //
    00002 // messmpi.h
    00003 //
    00004 // Copyright (C) 1996 Limit Point Systems, Inc.
    00005 //
    00006 // Author: Curtis Janssen <cljanss@limitpt.com>
    00007 // Maintainer: LPS
    00008 //
    00009 // This file is part of the SC Toolkit.
    00010 //
    00011 // The SC Toolkit is free software; you can redistribute it and/or modify
    00012 // it under the terms of the GNU Library General Public License as published by
    00013 // the Free Software Foundation; either version 2, or (at your option)
    00014 // any later version.
    00015 //
    00016 // The SC Toolkit is distributed in the hope that it will be useful,
    00017 // but WITHOUT ANY WARRANTY; without even the implied warranty of
    00018 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    00019 // GNU Library General Public License for more details.
    00020 //
    00021 // You should have received a copy of the GNU Library General Public License
    00022 // along with the SC Toolkit; see the file COPYING.LIB.  If not, write to
    00023 // the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
    00024 //
    00025 // The U.S. Government is granted a limited license as per AL 91-7.
    00026 //
    00027
    00028 #ifndef _util_group_messmpi_h
    00029 #define _util_group_messmpi_h
    00030
    00031 #include <util/group/message.h>
    00032 #include <util/group/thread.h>
    00033
    00034 #include <mpi.h>
    00035
    00036 namespace sc {
    00037
    00040 class MPIMessageGrp: public MessageGrp {
    00041   protected:
    00042     void* buf;
    00043     int bufsize;
    00044
    00045     int rnode;
    00046     int rtag;
    00047     int rlen;
    00048
    00050     static int nmpi_grps;
    00052     static Ref<ThreadLock> grplock;
    00053
    00054     Ref<ThreadGrp> threadgrp;
    00056     MPI_Comm commgrp;
    00057
    00058 #if HAVE_P4
    00059     int nlocal;     // the number of processes on the master cluster
    00060     int nremote;    // the number of remote clusters
    00061     char *master;   // the name of the master cluster
    00062     char * jobid;   // a unique job name selected by the user
    00063
    00064     struct p4_cluster {
    00065         char *hostname;  // name of the remote cluster
    00066         int nslaves;     // the number of slaves on the remote cluster
    00067     } *remote_clusters;
    00068
    00069     struct p4_cluster * my_node_info(const char[], int&);
    00070 #endif
    00071
    00072     void init(MPI_Comm comm, int *argc=0, char ***argv=0);
    00073   public:
    00074     MPIMessageGrp();
    00077     MPIMessageGrp(MPI_Comm comm);
    00081     MPIMessageGrp(int *argc, char ***argv);
    00083     MPIMessageGrp(const Ref<KeyVal>&);
    00084     ~MPIMessageGrp();
    00085
    00087     Ref<MessageGrp> clone(void);
    00088
    00089     void raw_send(int target, void* data, int nbyte);
    00090     void raw_recv(int sender, void* data, int nbyte);
    00091     void raw_sendt(int target, int type, void* data, int nbyte);
    00092     void raw_recvt(int type, void* data, int nbyte);
    00093
    00094     int probet(int type);
    00095
    00096     void sync();
    00097
    00098     void reduce(double*, int n, GrpReduce<double>&,
    00099                 double*scratch = 0, int target = -1);
    00100     void reduce(unsigned int*, int n, GrpReduce<unsigned int>&,
    00101                 unsigned int*scratch = 0, int target = -1);
    00102     void reduce(int*, int n, GrpReduce<int>&,
    00103                 int*scratch = 0, int target = -1);
    00104     void reduce(char*, int n, GrpReduce<char>&,
    00105                 char*scratch = 0, int target = -1);
    00106     void reduce(unsigned char*, int n, GrpReduce<unsigned char>&,
    00107                 unsigned char*scratch = 0, int target = -1);
    00108     void reduce(signed char*, int n, GrpReduce<signed char>&,
    00109                 signed char*scratch = 0, int target = -1);
    00110     void reduce(short*, int n, GrpReduce<short>&,
    00111                 short*scratch = 0, int target = -1);
    00112     void reduce(float*, int n, GrpReduce<float>&,
    00113                 float*scratch = 0, int target = -1);
    00114     void reduce(long*, int n, GrpReduce<long>&,
    00115                 long*scratch = 0, int target = -1);
    00116
    00117     void raw_bcast(void* data, int nbyte, int from);
    00118 };
    00119
    00120 }
    00121
    00122 #endif
    00123
    00124 // Local Variables:
    00125 // mode: c++
    00126 // c-file-style: "CLJ"
    00127 // End: