root/orte/test/system/orte_nodename.c

DEFINITIONS

1. main

   1 /* -*- C -*-
   2  *
   3  * $HEADER$
   4  *
   5  * The most basic of MPI applications
   6  */
   7 
   8 #include "orte_config.h"
   9 
  10 #include <stdio.h>
  11 #include <unistd.h>
  12 
  13 #include "opal/class/opal_list.h"
  14 #include "opal/util/opal_environ.h"
  15 
  16 #include "orte/util/proc_info.h"
  17 #include "orte/util/name_fns.h"
  18 #include "orte/runtime/orte_globals.h"
  19 #include "orte/runtime/runtime.h"
  20 #include "orte/mca/ess/ess.h"
  21 
  22 int main(int argc, char* argv[])
  23 {
  24     int rc, i, restart=-1;
  25     char hostname[OPAL_MAXHOSTNAMELEN], *rstrt;
  26     pid_t pid;
  27 
  28     if (0 > (rc = orte_init(&argc, &argv, ORTE_PROC_NON_MPI))) {
  29         fprintf(stderr, "orte_nodename: couldn't init orte - error code %d\n", rc);
  30         return rc;
  31     }
  32 
  33     if (NULL != (rstrt = getenv("OMPI_MCA_orte_num_restarts"))) {
  34         restart = strtol(rstrt, NULL, 10);
  35     }
  36 
  37     gethostname(hostname, sizeof(hostname));
  38     pid = getpid();
  39 
  40     printf("orte_nodename: Node %s Name %s Pid %ld Restarts: %d\n",
  41            hostname, ORTE_NAME_PRINT(ORTE_PROC_MY_NAME), (long)pid, restart);
  42 
  43     for (i=0; NULL != environ[i]; i++) {
  44         if (0 == strncmp(environ[i], "OMPI_MCA", strlen("OMPI_MCA"))) {
  45             printf("\t%s\n", environ[i]);
  46         }
  47     }
  48 
  49     orte_finalize();
  50     return 0;
  51 }