simple_mpi.cpp

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00002 // ************************************************************************
00003 // 
00004 //               Epetra: Linear Algebra Services Package 
00005 //                 Copyright (2001) Sandia Corporation
00006 // 
00007 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
00008 // license for use of this work by or on behalf of the U.S. Government.
00009 // 
00010 // This library is free software; you can redistribute it and/or modify
00011 // it under the terms of the GNU Lesser General Public License as
00012 // published by the Free Software Foundation; either version 2.1 of the
00013 // License, or (at your option) any later version.
00014 //  
00015 // This library is distributed in the hope that it will be useful, but
00016 // WITHOUT ANY WARRANTY; without even the implied warranty of
00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00018 // Lesser General Public License for more details.
00019 //  
00020 // You should have received a copy of the GNU Lesser General Public
00021 // License along with this library; if not, write to the Free Software
00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00023 // USA
00024 // Questions? Contact Michael A. Heroux (maherou@sandia.gov) 
00025 // 
00026 // ************************************************************************
00027 //@HEADER
00028 
00029 // Petra_Comm Test routine
00030 
00031 #include <math.h>
00032 #include <unistd.h>
00033 #include <string.h>
00034 #include <ctype.h>
00035 #include <stdlib.h>
00036 #include <iostream.h>
00037 #include <mpi.h>
00038 
00039 int main(int argc, char *argv[]) {
00040 
00041   // Initialize MPI
00042 
00043   MPI_Init(&argc,&argv);
00044   int size, rank; // Number of MPI processes, My process ID
00045 
00046   MPI_Comm_size(MPI_COMM_WORLD, &size);
00047   MPI_Comm_rank(MPI_COMM_WORLD, &rank);
00048 
00049   cout << "Process "<<rank<<" of "<<size<<" is alive." <<endl;
00050 
00051   MPI_Finalize();
00052   return 0;
00053 }

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