/[escript]/trunk/pythonMPI/src/ScriptMPIredirect.cpp
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Contents of /trunk/pythonMPI/src/ScriptMPIredirect.cpp

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Revision 3490 - (show annotations)
Wed Mar 30 02:24:33 2011 UTC (8 years, 4 months ago) by caltinay
File size: 2675 byte(s)
More gcc-4.6 fixes (mostly initialized-but-unused-var warnings)

1
2 /*******************************************************
3 *
4 * Copyright (c) 2003-2010 by University of Queensland
5 * Earth Systems Science Computational Center (ESSCC)
6 * http://www.uq.edu.au/esscc
7 *
8 * Primary Business: Queensland, Australia
9 * Licensed under the Open Software License version 3.0
10 * http://www.opensource.org/licenses/osl-3.0.php
11 *
12 *******************************************************/
13
14
15 #include <Python.h>
16 #include <iostream>
17 #include <stdexcept>
18
19 extern "C"{
20 #include "esysUtils/Esys_MPI.h"
21 }
22
23 #ifdef ESYS_MPI
24
25 int main( int argc, char **argv ) {
26 int status = 0;
27 int provided;
28 Esys_MPIInfo *mpi_info=NULL;
29 try
30 {
31 /*
32 * Initialise MPI
33 */
34 /* status = MPI_Init(&argc, &argv); */
35 status = MPI_Init_thread(&argc, &argv, MPI_THREAD_FUNNELED, &provided );
36 if (status != MPI_SUCCESS) {
37 std::cerr << argv[0] << ": MPI_Init failed, exiting." << std::endl;
38 return status;
39 }
40 mpi_info = Esys_MPIInfo_alloc( MPI_COMM_WORLD );
41
42 if( mpi_info->rank )
43 {
44 char fname[256];
45 sprintf( fname, "stdout_%04d.out", mpi_info->rank );
46 /*FILE *fp_out =*/ freopen( fname, "w+", stdout );
47 sprintf( fname, "stdout_%04d.err", mpi_info->rank );
48 /*FILE *fp_err =*/ freopen( fname, "w+", stderr );
49 }
50 /*
51 * Start the python parser
52 */
53 status = Py_Main(argc, argv);
54
55 /*
56 * Close down MPI.
57 * status==1 : uncaught python exception
58 * status==2 : invalid python cmd line
59 * status>2 : supposed to be param of sys.exit()
60 * sys.exit doesn't return as it should.
61 *
62 * I have made an exception for 2 because calling MPI_Abort
63 * can display pretty ugly messages for not typing params
64 * properly.
65 * Yes that means you probably shouldn't use 2 as an exit code
66 * but we don't really recommend sys.exit anyway.
67 */
68 if ((status!=0) && (status!=2))
69 {
70 MPI_Abort(MPI_COMM_WORLD,status);
71 }
72 else
73 {
74 /*
75 * Finalise MPI for a clean exit.
76 */
77 MPI_Finalize();
78 }
79
80 Esys_MPIInfo_free( mpi_info );
81 }
82 catch (std::runtime_error &e)
83 {
84 std::cerr << "EXCEPTION: " << e.what() << std::endl;
85 MPI_Abort(MPI_COMM_WORLD,1);
86 throw;
87 }
88 catch (char *e)
89 {
90 std::cerr << "EXCEPTION: " << e << std::endl;
91 MPI_Abort(MPI_COMM_WORLD,1);
92 throw;
93 }
94 catch (...)
95 {
96 std::cerr << "EXCEPTION: " << "UNKNOWN." << std::endl;
97 MPI_Abort(MPI_COMM_WORLD,1);
98 throw;
99 }
100
101 return status;
102 }
103
104 #else
105
106 int main( int argc, char **argv ) {
107 printf( "Esys must be compiled with ESYS_MPI defined to make the MPI version available\n\n" );
108 return 0;
109 }
110 #endif // ESYS_MPI
111

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