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/* Copyright 2007 ENSEIRB, INRIA & CNRS
**
** This file is part of the Scotch software package for static mapping,
** graph partitioning and sparse matrix ordering.
**
** This software is governed by the CeCILL-C license under French law
** and abiding by the rules of distribution of free software. You can
** use, modify and/or redistribute the software under the terms of the
** CeCILL-C license as circulated by CEA, CNRS and INRIA at the following
** URL: "http://www.cecill.info".
**
** As a counterpart to the access to the source code and rights to copy,
** modify and redistribute granted by the license, users are provided
** only with a limited warranty and the software's author, the holder of
** the economic rights, and the successive licensors have only limited
** liability.
**
** In this respect, the user's attention is drawn to the risks associated
** with loading, using, modifying and/or developing or reproducing the
** software by the user in light of its specific status of free software,
** that may mean that it is complicated to manipulate, and that also
** therefore means that it is reserved for developers and experienced
** professionals having in-depth computer knowledge. Users are therefore
** encouraged to load and test the software's suitability as regards
** their requirements in conditions enabling the security of their
** systems and/or data to be ensured and, more generally, to use and
** operate it in the same conditions as regards security.
**
** The fact that you are presently reading this means that you have had
** knowledge of the CeCILL-C license and that you accept its terms.
*/
/************************************************************/
/** **/
/** NAME : dgscat.c **/
/** **/
/** AUTHOR : Francois PELLEGRINI **/
/** **/
/** FUNCTION : This program distributes a source graph **/
/** across processors and saves it as a **/
/** distributed source graph. **/
/** This module contains the main function. **/
/** **/
/** DATES : # Version 5.0 : from : 17 may 2007 **/
/** to : 23 jun 2007 **/
/** **/
/************************************************************/
/*
** The defines and includes.
*/
#define DGSCAT
#define SCOTCH_PTSCOTCH
#include "common.h"
#include "ptscotch.h"
#include "dgscat.h"
/*
** The static and global definitions.
*/
static int C_fileNum = 0; /* Number of file in arg list */
static File C_fileTab[C_FILENBR] = { /* File array */
{ "-", NULL, "r" },
{ "-", NULL, "w" } };
static const char * C_usageList[] = {
"dgscat [<input (centralized) source file> [<output distributed source file>]] <options>",
" -c : Check the input graph after loading",
" -h : Display this help",
" -r<num> : Set root process for centralized files (default is 0)",
" -V : Print program version and copyright",
NULL };
/*********************/
/* */
/* The main routine. */
/* */
/*********************/
int
main (
int argc,
char * argv[])
{
int thrdlvlreqval;
int thrdlvlproval;
SCOTCH_Dgraph grafdat;
int procglbnbr;
int proclocnum;
int protglbnum; /* Root process */
int flagval;
int i;
thrdlvlreqval = MPI_THREAD_MULTIPLE;
if (MPI_Init_thread (&argc, &argv, thrdlvlreqval, &thrdlvlproval) != MPI_SUCCESS) {
errorPrint ("main: Cannot initialize (1)");
exit (1);
}
if (thrdlvlreqval > thrdlvlproval) {
errorPrint ("main: Cannot initialize (2)");
exit (1);
}
MPI_Comm_size (MPI_COMM_WORLD, &procglbnbr); /* Get communicator data */
MPI_Comm_rank (MPI_COMM_WORLD, &proclocnum);
protglbnum = 0; /* Assume root process is process 0 */
errorProg ("dgscat");
if ((argc >= 2) && (argv[1][0] == '?')) { /* If need for help */
usagePrint (stdout, C_usageList);
return (0);
}
flagval = C_FLAGNONE;
for (i = 0; i < C_FILENBR; i ++) /* Set default stream pointers */
C_fileTab[i].pntr = (C_fileTab[i].mode[0] == 'r') ? stdin : stdout;
for (i = 1; i < argc; i ++) { /* Loop for all option codes */
if ((argv[i][0] != '+') && /* If found a file name */
((argv[i][0] != '-') || (argv[i][1] == '\0'))) {
if (C_fileNum < C_FILEARGNBR) /* A file name has been given */
C_fileTab[C_fileNum ++].name = argv[i];
else {
errorPrint ("main: too many file names given");
return (1);
}
}
else { /* If found an option name */
switch (argv[i][1]) {
case 'C' :
case 'c' :
flagval |= C_FLAGCHECK;
break;
#ifdef SCOTCH_DEBUG_ALL
case 'D' :
case 'd' :
flagval |= C_FLAGDEBUG;
break;
#endif /* SCOTCH_DEBUG_ALL */
case 'H' : /* Give the usage message */
case 'h' :
usagePrint (stdout, C_usageList);
return (0);
case 'R' : /* Root process (if necessary) */
case 'r' :
protglbnum = atoi (&argv[i][2]);
if ((protglbnum < 0) ||
(protglbnum >= procglbnbr) ||
((protglbnum == 0) && (argv[i][2] != '0'))) {
errorPrint ("main: invalid root process number");
return (1);
}
break;
case 'V' :
case 'v' :
fprintf (stderr, "dgscat, version %s - F. Pellegrini\n", SCOTCH_VERSION);
fprintf (stderr, "Copyright 2007 ENSEIRB, INRIA & CNRS, France\n");
fprintf (stderr, "This software is libre/free software under CeCILL-C -- see the user's manual for more information\n");
return (0);
default :
errorPrint ("main: unprocessed option (\"%s\")", argv[i]);
return (1);
}
}
}
#ifdef SCOTCH_DEBUG_ALL
if ((flagval & C_FLAGDEBUG) != 0) {
fprintf (stderr, "Proc %4d of %d, pid %d\n", proclocnum, procglbnbr, getpid ());
if (proclocnum == protglbnum) { /* Synchronize on keybord input */
char c;
printf ("Waiting for key press...\n");
scanf ("%c", &c);
}
MPI_Barrier (MPI_COMM_WORLD);
}
#endif /* SCOTCH_DEBUG_ALL */
for (i = 0; i < C_FILENBR; i ++) { /* For all file names */
if (fileNameDistExpand (&C_fileTab[i].name, procglbnbr, proclocnum, protglbnum) != 0) { /* If cannot allocate new name */
errorPrint ("main: cannot create file name (%d)", i);
return (1);
}
if (C_fileTab[i].name == NULL) /* If inexisting stream because not root process and centralized stream */
C_fileTab[i].pntr = NULL;
else {
if ((C_fileTab[i].name[0] != '-') || /* If not standard stream, open it */
(C_fileTab[i].name[1] != '\0')) {
if ((C_fileTab[i].pntr = fopen (C_fileTab[i].name, C_fileTab[i].mode)) == NULL) { /* Open the file */
errorPrint ("main: cannot open file (%d)", i);
return (1);
}
}
}
}
SCOTCH_dgraphInit (&grafdat, MPI_COMM_WORLD);
SCOTCH_dgraphLoad (&grafdat, C_filepntrsrcinp, -1, 0);
if ((flagval & C_FLAGCHECK) != 0)
SCOTCH_dgraphCheck (&grafdat);
SCOTCH_dgraphSave (&grafdat, C_filepntrsrcout);
#ifdef SCOTCH_DEBUG_ALL
SCOTCH_dgraphExit (&grafdat);
for (i = 0; i < C_FILENBR; i ++) { /* For all file names */
if ((C_fileTab[i].name != NULL) && /* If existing stream */
((C_fileTab[i].name[0] != '-') || /* If not standard stream */
(C_fileTab[i].name[1] != '\0'))) {
fclose (C_fileTab[i].pntr); /* Close the stream */
}
}
#endif /* SCOTCH_DEBUG_ALL */
MPI_Finalize ();
exit (0);
}
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