diff -ru mpiexec-0.78/mpiexec.c mpiexec-0.78.new/mpiexec.c
--- mpiexec-0.78/mpiexec.c	Mon Apr 11 16:56:45 2005
+++ mpiexec-0.78.new/mpiexec.c	Tue Apr 12 10:43:36 2005
@@ -8,6 +8,9 @@
  *
  * Copyright (C) 2000-5 Pete Wyckoff <pw@osc.edu>
  *
+ * Copyright (C) 2005 Institut National de Recherche en Informatique
+ *                    et Automatique <sebastien.georget@sophia.inria.fr>
+ *
  * Distributed under the GNU Public License Version 2 or later (See LICENSE)
  */
 #define _GNU_SOURCE  /* hoping to get strsignal() from string.h */
@@ -176,6 +179,18 @@
 	  __func__, sig, parse_signal_number(sig));
     wait_tasks(sig, 0);
     exit(sig);
+}
+
+void
+notify_all(int sig)
+{
+    if (cl_args->verbose)
+	printf("%s: caught signal %d (%s), sending it to all tasks...\n",
+	  __func__, sig, parse_signal_number(sig));
+    if (sig == 18)
+        notify_tasks(18);
+    if (sig == 20)
+        notify_tasks(19);
 }
 
 /*
diff -ru mpiexec-0.78/mpiexec.h mpiexec-0.78.new/mpiexec.h
--- mpiexec-0.78/mpiexec.h	Mon Apr 11 16:56:45 2005
+++ mpiexec-0.78.new/mpiexec.h	Mon Apr 11 16:56:57 2005
@@ -114,6 +114,7 @@
  */
 /* mpiexec.c */
 const char *resolve_exe(const char *exe);
+void notify_all(int sig);
 void killall(int sig);
 void handle_signals(const int *list, int num, void (*handler)(int sig));
 typedef int (*cull_compare_func)(task_cntrl_t *t1, task_cntrl_t *t2);
diff -ru mpiexec-0.78/start_tasks.c mpiexec-0.78.new/start_tasks.c
--- mpiexec-0.78/start_tasks.c	Mon Apr 11 16:56:45 2005
+++ mpiexec-0.78.new/start_tasks.c	Tue Apr 12 10:44:55 2005
@@ -5,6 +5,8 @@
  *
  * Copyright (C) 2000-3 Ohio Supercomputer Center.
  * Copyright (C) 2000-5 Pete Wyckoff <pw@osc.edu>
+ * Copyright (C) 2005 Institut National de Recherche en Informatique
+ *                    et Automatique <sebastien.georget@sophia.inria.fr>
  *
  * Distributed under the GNU Public License Version 2 or later (See LICENSE)
  */
@@ -354,8 +356,10 @@
     {
 	const int siglist[] = { SIGHUP, SIGINT, SIGTERM };
 	const int alarm_list[] = { SIGALRM };
+	const int suspend_list[] = { SIGTSTP, SIGCONT };
 	handle_signals(siglist, list_count(siglist), killall);
 	handle_signals(alarm_list, list_count(alarm_list), kill_others_now);
+	handle_signals(suspend_list, list_count(suspend_list), notify_all);
     }
 
     /*
diff -ru mpiexec-0.78/wait_tasks.c mpiexec-0.78.new/wait_tasks.c
--- mpiexec-0.78/wait_tasks.c	Mon Apr 11 16:56:45 2005
+++ mpiexec-0.78.new/wait_tasks.c	Tue Apr 12 10:45:36 2005
@@ -5,6 +5,8 @@
  *
  * Copyright (C) 2000-3 Ohio Supercomputer Center.
  * Copyright (C) 2000-4 Pete Wyckoff <pw@osc.edu>
+ * Copyright (C) 2005 Institut National de Recherche en Informatique
+ *                    et Automatique <sebastien.georget@sophia.inria.fr>
  *
  * Distributed under the GNU Public License Version 2 or later (See LICENSE)
  */
@@ -33,6 +35,24 @@
 	/* replace old event with the kill one */
 	tasks[i].evt_obit = tasks[i].evt;
 	tasks[i].evt = evt;
+    }
+}
+
+/*
+ * Use tm to send a signal to all tasks.
+ */
+void
+notify_tasks(int signum)
+{
+    int i, err;
+    tm_event_t evt;
+
+    /* printf("kill_tasks: killing with %d\n", signum); */
+    /* ignore the generated event */
+    for (i=0; i<numtask; i++) {
+	if (tasks[i].done) continue;
+	if ((err = tm_kill(tasks[i].tid, signum, &evt)) != TM_SUCCESS)
+	    error_tm(err, "%s: tm_kill tid %d", __func__, tasks[i].tid);
     }
 }