Per request from Brian, enable mapping of stddiag output (output from opal_output calls) to stderr of the local process. This allows you to obtain that output in a local window (for example, when using xterm for each process) instead of having it automatically forwarded to mpirun. Turn this on automatically whenever someone uses the -xterm option, and to be set manually using the orte_map_stddiag_to_stderr mca param.

This commit was SVN r26352.

orte/mca/iof/base/iof_base_setup.c

@@ -186,12 +186,14 @@ orte_iof_base_setup_child(orte_iof_base_io_conf_t *opts, char ***env)
         close(opts->p_stderr[1]);
     }
 
-    /* Set an environment variable that the new child process can use
-       to get the fd of the pipe connected to the INTERNAL IOF tag. */
-    asprintf(&str, "%d", opts->p_internal[1]);
-    if (NULL != str) {
-        opal_setenv("OPAL_OUTPUT_STDERR_FD", str, true, env);
-        free(str);
+    if (!orte_map_stddiag_to_stderr) {
+        /* Set an environment variable that the new child process can use
+           to get the fd of the pipe connected to the INTERNAL IOF tag. */
+        asprintf(&str, "%d", opts->p_internal[1]);
+        if (NULL != str) {
+            opal_setenv("OPAL_OUTPUT_STDERR_FD", str, true, env);
+            free(str);
+        }
     }
 
     return ORTE_SUCCESS;

orte/runtime/orte_globals.c

@@ -183,6 +183,9 @@ char *orte_forward_envars = NULL;
 /* preload binaries */
 bool orte_preload_binaries = false;
 
+/* map stddiag output to stderr so it isn't forwarded to mpirun */
+bool orte_map_stddiag_to_stderr = false;
+
 /* progress thread */
 #if ORTE_ENABLE_PROGRESS_THREAD
 opal_thread_t orte_progress_thread;

orte/runtime/orte_globals.h

@@ -695,6 +695,9 @@ ORTE_DECLSPEC extern char *orte_forward_envars;
 /* preload binaries */
 ORTE_DECLSPEC extern bool orte_preload_binaries;
 
+/* map stddiag output to stderr so it isn't forwarded to mpirun */
+ORTE_DECLSPEC extern bool orte_map_stddiag_to_stderr;
+
 #endif /* ORTE_DISABLE_FULL_SUPPORT */
 
 END_C_DECLS

orte/runtime/orte_mca_params.c

@@ -421,8 +421,20 @@ int orte_register_params(void)
          * back to the controlling terminal
          */
         orte_leave_session_attached = true;
+        /* also want to redirect stddiag output from opal_output
+         * to stderr from the process so those messages show
+         * up in the xterm window instead of being forwarded to mpirun
+         */
+        orte_map_stddiag_to_stderr = true;
     }
 
+    /* whether or not to map stddiag to stderr */
+    mca_base_param_reg_int_name("orte", "map_stddiag_to_stderr",
+                                "Map output from opal_output to stderr of the local process [default: no]",
+                                false, false,
+                                (int) false, &value);
+    orte_map_stddiag_to_stderr = OPAL_INT_TO_BOOL(value);
+
     /* whether or not to forward SIGTSTP and SIGCONT signals */
     mca_base_param_reg_int_name("orte", "forward_job_control",
                                 "Forward SIGTSTP (after converting to SIGSTOP) and SIGCONT signals to the application procs [default: no]",