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e7ecd56bd2
openmpi/orte/mca/plm/submit/pls_submit_module.c
Jeff Squyres e7ecd56bd2 This commit represents a bunch of work on a Mercurial side branch. As 
such, the commit message back to the master SVN repository is fairly
long.

= ORTE Job-Level Output Messages =

Add two new interfaces that should be used for all new code throughout
the ORTE and OMPI layers (we already make the search-and-replace on
the existing ORTE / OMPI layers):

 * orte_output(): (and corresponding friends ORTE_OUTPUT,
   orte_output_verbose, etc.)  This function sends the output directly
   to the HNP for processing as part of a job-specific output
   channel.  It supports all the same outputs as opal_output()
   (syslog, file, stdout, stderr), but for stdout/stderr, the output
   is sent to the HNP for processing and output.  More on this below.
 * orte_show_help(): This function is a drop-in-replacement for
   opal_show_help(), with two differences in functionality:
   1. the rendered text help message output is sent to the HNP for
      display (rather than outputting directly into the process' stderr
      stream)
   1. the HNP detects duplicate help messages and does not display them
      (so that you don't see the same error message N times, once from
      each of your N MPI processes); instead, it counts "new" instances
      of the help message and displays a message every ~5 seconds when
      there are new ones ("I got X new copies of the help message...")

opal_show_help and opal_output still exist, but they only output in
the current process.  The intent for the new orte_* functions is that
they can apply job-level intelligence to the output.  As such, we
recommend that all new ORTE and OMPI code use the new orte_*
functions, not thei opal_* functions.

=== New code ===

For ORTE and OMPI programmers, here's what you need to do differently
in new code:

 * Do not include opal/util/show_help.h or opal/util/output.h.
   Instead, include orte/util/output.h (this one header file has
   declarations for both the orte_output() series of functions and
   orte_show_help()).
 * Effectively s/opal_output/orte_output/gi throughout your code.
   Note that orte_output_open() takes a slightly different argument
   list (as a way to pass data to the filtering stream -- see below),
   so you if explicitly call opal_output_open(), you'll need to
   slightly adapt to the new signature of orte_output_open().
 * Literally s/opal_show_help/orte_show_help/.  The function signature
   is identical.

=== Notes ===

 * orte_output'ing to stream 0 will do similar to what
   opal_output'ing did, so leaving a hard-coded "0" as the first
   argument is safe.
 * For systems that do not use ORTE's RML or the HNP, the effect of
   orte_output_* and orte_show_help will be identical to their opal
   counterparts (the additional information passed to
   orte_output_open() will be lost!).  Indeed, the orte_* functions
   simply become trivial wrappers to their opal_* counterparts.  Note
   that we have not tested this; the code is simple but it is quite
   possible that we mucked something up.

= Filter Framework =

Messages sent view the new orte_* functions described above and
messages output via the IOF on the HNP will now optionally be passed
through a new "filter" framework before being output to
stdout/stderr.  The "filter" OPAL MCA framework is intended to allow
preprocessing to messages before they are sent to their final
destinations.  The first component that was written in the filter
framework was to create an XML stream, segregating all the messages
into different XML tags, etc.  This will allow 3rd party tools to read
the stdout/stderr from the HNP and be able to know exactly what each
text message is (e.g., a help message, another OMPI infrastructure
message, stdout from the user process, stderr from the user process,
etc.).

Filtering is not active by default.  Filter components must be
specifically requested, such as:

{{{
$ mpirun --mca filter xml ...
}}}

There can only be one filter component active.

= New MCA Parameters =

The new functionality described above introduces two new MCA
parameters:

 * '''orte_base_help_aggregate''': Defaults to 1 (true), meaning that
   help messages will be aggregated, as described above.  If set to 0,
   all help messages will be displayed, even if they are duplicates
   (i.e., the original behavior).
 * '''orte_base_show_output_recursions''': An MCA parameter to help
   debug one of the known issues, described below.  It is likely that
   this MCA parameter will disappear before v1.3 final.

= Known Issues =

 * The XML filter component is not complete.  The current output from
   this component is preliminary and not real XML.  A bit more work
   needs to be done to configure.m4 search for an appropriate XML
   library/link it in/use it at run time.
 * There are possible recursion loops in the orte_output() and
   orte_show_help() functions -- e.g., if RML send calls orte_output()
   or orte_show_help().  We have some ideas how to fix these, but
   figured that it was ok to commit before feature freeze with known
   issues.  The code currently contains sub-optimal workarounds so
   that this will not be a problem, but it would be good to actually
   solve the problem rather than have hackish workarounds before v1.3 final.

This commit was SVN r18434.
2008-05-13 20:00:55 +00:00

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Исходник Ответственный История

/*
* Copyright (c) 2004-2008 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*
* These symbols are in a file by themselves to provide nice linker
* semantics. Since linkers generally pull in symbols by object
* files, keeping these symbols as the only symbols in this file
* prevents utility programs such as "ompi_info" from having to import
* entire components just to query their version and parameters.
*/
#include "orte_config.h"
#include "orte/constants.h"
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <errno.h>
#include <string.h>
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#ifdef HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#include <fcntl.h>
#include <signal.h>
#ifdef HAVE_PWD_H
#include <pwd.h>
#endif
#include "opal/mca/installdirs/installdirs.h"
#include "opal/mca/base/mca_base_param.h"
#include "opal/util/if.h"
#include "opal/util/os_path.h"
#include "opal/util/path.h"
#include "opal/event/event.h"
#include "orte/util/show_help.h"
#include "opal/util/argv.h"
#include "opal/util/opal_environ.h"
#include "orte/util/output.h"
#include "opal/util/trace.h"
#include "opal/util/basename.h"
#include "opal/util/opal_environ.h"
#include "orte/util/proc_info.h"
#include "orte/util/univ_info.h"
#include "orte/util/session_dir.h"
#include "orte/runtime/orte_wait.h"
#include "orte/runtime/orte_wakeup.h"
#include "orte/runtime/params.h"
#include "opal/dss/dss.h"
#include "orte/mca/rml/rml.h"
#include "orte/mca/errmgr/errmgr.h"
#include "orte/mca/ras/ras_types.h"
#include "orte/mca/rmaps/rmaps.h"
#include "orte/mca/plm/plm.h"
#include "orte/mca/plm/base/base.h"
#include "orte/mca/plm/base/plm_private.h"
#include "orte/mca/plm/submit/plm_submit.h"
static int orte_plm_submit_init(void);
#if OMPI_HAVE_POSIX_THREADS && OMPI_THREADS_HAVE_DIFFERENT_PIDS && OMPI_ENABLE_PROGRESS_THREADS
static int orte_plm_submit_launch_threaded(orte_jobid_t jobid);
#endif
orte_plm_base_module_t orte_plm_submit_module = {
orte_plm_submit_init,
orte_plm_base_set_hnp_name,
#if OMPI_HAVE_POSIX_THREADS && OMPI_THREADS_HAVE_DIFFERENT_PIDS && OMPI_ENABLE_PROGRESS_THREADS
orte_plm_submit_launch_threaded,
#else
orte_plm_submit_launch,
#endif
NULL,
orte_plm_submit_terminate_job,
orte_plm_submit_terminate_orteds,
orte_plm_submit_signal_job,
orte_plm_submit_finalize
};
static void set_handler_default(int sig);
enum {
ORTE_PLM_submit_SHELL_BASH = 0,
ORTE_PLM_submit_SHELL_ZSH,
ORTE_PLM_submit_SHELL_TCSH,
ORTE_PLM_submit_SHELL_CSH,
ORTE_PLM_submit_SHELL_KSH,
ORTE_PLM_submit_SHELL_SH,
ORTE_PLM_submit_SHELL_UNKNOWN
};
typedef int orte_plm_submit_shell;
static const char * orte_plm_submit_shell_name[] = {
"bash",
"zsh",
"tcsh", /* tcsh has to be first otherwise strstr finds csh */
"csh",
"ksh",
"sh",
"unknown"
};
/* local global storage of timing variables */
static struct timeval joblaunchstart, joblaunchstop;
/* global storage of active jobid being launched */
static orte_jobid_t active_job=ORTE_JOBID_INVALID;
/*
* Init module
*/
static int orte_plm_submit_init(void)
{
int rc;
if (ORTE_SUCCESS != (rc = orte_plm_base_comm_start())) {
ORTE_ERROR_LOG(rc);
}
return rc;
}
/**
* Check the Shell variable on the specified node
*/
static int orte_plm_submit_probe(orte_node_t *node, orte_plm_submit_shell * shell)
{
char ** argv;
int argc, rc = ORTE_SUCCESS, i;
int fd[2];
pid_t pid;
char outbuf[4096];
if (mca_plm_submit_component.debug) {
orte_output(0, "plm:submit: going to check SHELL variable on node %s\n",
node->name);
}
*shell = ORTE_PLM_submit_SHELL_UNKNOWN;
if (pipe(fd)) {
orte_output(0, "plm:submit: pipe failed with errno=%d\n", errno);
return ORTE_ERR_IN_ERRNO;
}
if ((pid = fork()) < 0) {
orte_output(0, "plm:submit: fork failed with errno=%d\n", errno);
return ORTE_ERR_IN_ERRNO;
}
else if (pid == 0) { /* child */
if (dup2(fd[1], 1) < 0) {
orte_output(0, "plm:submit: dup2 failed with errno=%d\n", errno);
exit(01);
}
/* Build argv array */
argv = opal_argv_copy(mca_plm_submit_component.agent_argv);
argc = mca_plm_submit_component.agent_argc;
opal_argv_append(&argc, &argv, node->name);
opal_argv_append(&argc, &argv, "echo $SHELL");
execvp(argv[0], argv);
exit(errno);
}
if (close(fd[1])) {
orte_output(0, "plm:submit: close failed with errno=%d\n", errno);
return ORTE_ERR_IN_ERRNO;
}
{
ssize_t ret = 1;
char* ptr = outbuf;
size_t outbufsize = sizeof(outbuf);
do {
ret = read (fd[0], ptr, outbufsize-1);
if (ret < 0) {
if (errno == EINTR)
continue;
orte_output( 0, "Unable to detect the remote shell (error %s)\n",
strerror(errno) );
rc = ORTE_ERR_IN_ERRNO;
break;
}
if( outbufsize > 1 ) {
outbufsize -= ret;
ptr += ret;
}
} while( 0 != ret );
*ptr = '\0';
}
close(fd[0]);
if( outbuf[0] != '\0' ) {
char *sh_name = rindex(outbuf, '/');
if( NULL != sh_name ) {
sh_name++; /* skip '/' */
/* We cannot use "echo -n $SHELL" because -n is not portable. Therefore
* we have to remove the "\n" */
if ( sh_name[strlen(sh_name)-1] == '\n' ) {
sh_name[strlen(sh_name)-1] = '\0';
}
/* Search for the substring of known shell-names */
for (i = 0; i < (int)(sizeof (orte_plm_submit_shell_name)/
sizeof(orte_plm_submit_shell_name[0])); i++) {
if ( 0 == strcmp(sh_name, orte_plm_submit_shell_name[i]) ) {
*shell = i;
break;
}
}
}
}
if (mca_plm_submit_component.debug) {
if( ORTE_PLM_submit_SHELL_UNKNOWN == *shell ) {
orte_output(0, "plm:submit: node:%s has unhandled SHELL\n",
node->name);
} else {
orte_output(0, "plm:submit: node:%s has SHELL: %s\n",
node->name, orte_plm_submit_shell_name[*shell]);
}
}
return rc;
}
/**
* Fill the exec_path variable with the directory to the orted
*/
static int orte_plm_submit_fill_exec_path ( char ** exec_path)
{
struct stat buf;
asprintf(exec_path, "%s/orted", opal_install_dirs.bindir);
if (0 != stat(*exec_path, &buf)) {
char *path = getenv("PATH");
if (NULL == path) {
path = ("PATH is empty!");
}
orte_show_help("help-plm-submit.txt", "no-local-orted",
true, path, opal_install_dirs.bindir);
return ORTE_ERR_NOT_FOUND;
}
return ORTE_SUCCESS;
}
/**
* Callback on daemon exit.
*/
static void orte_plm_submit_wait_daemon(pid_t pid, int status, void* cbdata)
{
unsigned long deltat;
if (! WIFEXITED(status) || ! WEXITSTATUS(status) == 0) {
/* tell the user something went wrong */
orte_output(0, "ERROR: A daemon failed to start as expected.");
orte_output(0, "ERROR: There may be more information available from");
orte_output(0, "ERROR: the remote shell (see above).");
if (WIFEXITED(status)) {
orte_output(0, "ERROR: The daemon exited unexpectedly with status %d.",
WEXITSTATUS(status));
} else if (WIFSIGNALED(status)) {
#ifdef WCOREDUMP
if (WCOREDUMP(status)) {
orte_output(0, "The daemon received a signal %d (with core).",
WTERMSIG(status));
} else {
orte_output(0, "The daemon received a signal %d.", WTERMSIG(status));
}
#else
orte_output(0, "The daemon received a signal %d.", WTERMSIG(status));
#endif /* WCOREDUMP */
} else {
orte_output(0, "No extra status information is available: %d.", status);
}
/* The usual reasons for ssh to exit abnormally all are a pretty good
indication that the child processes aren't going to start up properly.
Set the job state to indicate we failed to launch so orterun's exit status
will be non-zero and forcibly terminate the job so orterun can exit
*/
orte_plm_base_launch_failed(active_job, true, pid, status, ORTE_JOB_STATE_FAILED_TO_START);
} /* if abnormal exit */
/* release any waiting threads */
OPAL_THREAD_LOCK(&mca_plm_submit_component.lock);
if (mca_plm_submit_component.num_children-- >=
mca_plm_submit_component.num_concurrent ||
mca_plm_submit_component.num_children == 0) {
opal_condition_signal(&mca_plm_submit_component.cond);
}
if (mca_plm_submit_component.timing && mca_plm_submit_component.num_children == 0) {
if (0 != gettimeofday(&joblaunchstop, NULL)) {
orte_output(0, "plm_submit: could not obtain job launch stop time");
} else {
deltat = (joblaunchstop.tv_sec - joblaunchstart.tv_sec)*1000000 +
(joblaunchstop.tv_usec - joblaunchstart.tv_usec);
orte_output(0, "plm_submit: total time to launch job is %lu usec", deltat);
}
}
OPAL_THREAD_UNLOCK(&mca_plm_submit_component.lock);
}
/**
* Launch a daemon (bootproxy) on each node. The daemon will be responsible
* for launching the application.
*/
/* When working in this function, ALWAYS jump to "cleanup" if
* you encounter an error so that orterun will be woken up and
* the job can cleanly terminate
*/
int orte_plm_submit_launch(orte_job_t *jdata)
{
orte_job_map_t *map;
orte_std_cntr_t num_nodes;
int node_name_index1;
int node_name_index2;
int proc_vpid_index;
int local_exec_index, local_exec_index_end;
char *vpid_string = NULL;
char *param;
char **argv = NULL;
char *prefix_dir;
int argc;
int rc;
sigset_t sigs;
struct passwd *p;
bool remote_sh = false, remote_csh = false;
bool local_sh = false, local_csh = false;
char *lib_base = NULL, *bin_base = NULL;
bool failed_launch = true;
orte_app_context_t **apps;
orte_node_t **nodes;
orte_std_cntr_t nnode;
if (mca_plm_submit_component.timing) {
if (0 != gettimeofday(&joblaunchstart, NULL)) {
orte_output(0, "plm_submit: could not obtain start time");
joblaunchstart.tv_sec = 0;
joblaunchstart.tv_usec = 0;
}
}
/* create a jobid for this job */
if (ORTE_SUCCESS != (rc = orte_plm_base_create_jobid(&jdata->jobid))) {
ORTE_ERROR_LOG(rc);
goto cleanup;
}
ORTE_OUTPUT_VERBOSE((1, orte_plm_globals.output,
"%s plm:submit: launching job %s",
ORTE_NAME_PRINT(ORTE_PROC_MY_NAME),
ORTE_JOBID_PRINT(jdata->jobid)));
/* setup the job */
if (ORTE_SUCCESS != (rc = orte_plm_base_setup_job(jdata))) {
ORTE_ERROR_LOG(rc);
goto cleanup;
}
/* set the active jobid */
active_job = jobid;
/* Get the map for this job */
if (NULL == (map = orte_rmaps.get_job_map(active_job))) {
ORTE_ERROR_LOG(ORTE_ERR_NOT_FOUND);
rc = ORTE_ERR_NOT_FOUND;
goto cleanup;
}
apps = (orte_app_context_t**)jdata->apps->addr;
nodes = (orte_node_t**)map->nodes->addr;
/* account for any reuse of daemons */
if (ORTE_SUCCESS != (rc = orte_plm_base_launch_on_existing_daemons(map))) {
ORTE_ERROR_LOG(rc);
goto cleanup;
}
num_nodes = map->num_new_daemons;
if (0 == num_nodes) {
/* have all the daemons we need - launch app */
ORTE_OUTPUT_VERBOSE((1, orte_plm_globals.output,
"%s plm:submit: no new daemons to launch",
ORTE_NAME_PRINT(ORTE_PROC_MY_NAME)));
goto launch_apps;
}
if (mca_plm_submit_component.debug_daemons &&
mca_plm_submit_component.num_concurrent < num_nodes) {
/**
* If we are in '--debug-daemons' we keep the ssh connection
* alive for the span of the run. If we use this option
* AND we launch on more than "num_concurrent" machines
* then we will deadlock. No connections are terminated
* until the job is complete, no job is started
* since all the orteds are waiting for all the others
* to come online, and the others ore not launched because
* we are waiting on those that have started to terminate
* their ssh tunnels. :(
* As we cannot run in this situation, pretty print the error
* and return an error code.
*/
orte_show_help("help-plm-submit.txt", "deadlock-params",
true, mca_plm_submit_component.num_concurrent, num_nodes);
rc = ORTE_ERR_FATAL;
goto cleanup;
}
/*
* After a discussion between Ralph & Jeff, we concluded that we
* really are handling the prefix dir option incorrectly. It currently
* is associated with an app_context, yet it really refers to the
* location where OpenRTE/Open MPI is installed on a NODE. Fixing
* this right now would involve significant change to orterun as well
* as elsewhere, so we will intentionally leave this incorrect at this
* point. The error, however, is identical to that seen in all prior
* releases of OpenRTE/Open MPI, so our behavior is no worse than before.
*
* A note to fix this, along with ideas on how to do so, has been filed
* on the project's Trac system under "feature enhancement".
*
* For now, default to the prefix_dir provided in the first app_context.
* Since there always MUST be at least one app_context, we are safe in
* doing this.
*/
prefix_dir = apps[0]->prefix_dir;
/* What is our local shell? */
p = getpwuid(getuid());
if( NULL == p ) {
/* This user is unknown to the system. Therefore, there is no reason we
* spawn whatsoever in his name. Give up with a HUGE error message.
*/
orte_show_help( "help-plm-submit.txt", "unknown-user", true, (int)getuid() );
rc = ORTE_ERR_FATAL;
goto cleanup;
} else {
int i;
char *sh_name = NULL;
sh_name = rindex(p->pw_shell, '/');
sh_name++; /* skip the '\' */
for (i = 0; i < (int)(sizeof (orte_plm_submit_shell_name)/
sizeof(orte_plm_submit_shell_name[0])); i++) {
if ( 0 == strcmp(sh_name, orte_plm_submit_shell_name[i]) ) {
switch (i) {
case ORTE_PLM_submit_SHELL_SH: /* fall through */
case ORTE_PLM_submit_SHELL_KSH: /* fall through */
case ORTE_PLM_submit_SHELL_ZSH: /* fall through */
case ORTE_PLM_submit_SHELL_BASH: local_sh = true; break;
case ORTE_PLM_submit_SHELL_TCSH: /* fall through */
case ORTE_PLM_submit_SHELL_CSH: local_csh = true; break;
/* The match has been done, there is no need for a default case here */
}
/* I did match one of the known shells, so now we're done with the shell detection */
break;
}
}
if ( i == ORTE_PLM_submit_SHELL_UNKNOWN ) {
orte_output(0, "WARNING: local probe returned unhandled shell:%s assuming bash\n",
sh_name);
local_sh = true;
}
if (mca_plm_submit_component.debug) {
orte_output(0, "plm:submit: local csh: %d, local sh: %d\n",
local_csh, local_sh);
}
}
/* What is our remote shell? */
if (mca_plm_submit_component.assume_same_shell) {
remote_sh = local_sh;
remote_csh = local_csh;
if (mca_plm_submit_component.debug) {
orte_output(0, "plm:submit: assuming same remote shell as local shell");
}
} else {
orte_plm_submit_shell shell;
rc = orte_plm_submit_probe(nodes[0], &shell);
if (ORTE_SUCCESS != rc) {
ORTE_ERROR_LOG(rc);
goto cleanup;
}
switch (shell) {
case ORTE_PLM_submit_SHELL_SH: /* fall through */
case ORTE_PLM_submit_SHELL_KSH: /* fall through */
case ORTE_PLM_submit_SHELL_BASH: remote_sh = true; break;
case ORTE_PLM_submit_SHELL_TCSH: /* fall through */
case ORTE_PLM_submit_SHELL_CSH: remote_csh = true; break;
default:
orte_output(0, "WARNING: submit probe returned unhandled shell:%s assuming bash\n",
orte_plm_submit_shell_name[shell]);
remote_sh = true;
}
}
if (mca_plm_submit_component.debug) {
orte_output(0, "plm:submit: remote csh: %d, remote sh: %d\n",
remote_csh, remote_sh);
}
/*
* Build argv array
*/
argv = opal_argv_copy(mca_plm_submit_component.agent_argv);
argc = mca_plm_submit_component.agent_argc;
node_name_index1 = argc;
opal_argv_append(&argc, &argv, "<template>");
/* add the daemon command (as specified by user) */
local_exec_index = argc;
opal_argv_append(&argc, &argv, mca_plm_submit_component.orted);
/*
* Add the basic arguments to the orted command line
*/
orte_plm_base_orted_append_basic_args(&argc, &argv,
"env",
&proc_vpid_index,
&node_name_index2);
local_exec_index_end = argc;
if (mca_plm_submit_component.debug) {
param = opal_argv_join(argv, ' ');
if (NULL != param) {
orte_output(0, "plm:submit: final template argv:");
orte_output(0, "plm:submit: %s", param);
free(param);
}
}
/* Figure out the basenames for the libdir and bindir. This
requires some explanation:
- Use opal_install_dirs.libdir and opal_install_dirs.bindir.
- After a discussion on the devel-core mailing list, the
developers decided that we should use the local directory
basenames as the basis for the prefix on the remote note.
This does not handle a few notable cases (e.g., if the
libdir/bindir is not simply a subdir under the prefix, if the
libdir/bindir basename is not the same on the remote node as
it is here on the local node, etc.), but we decided that
--prefix was meant to handle "the common case". If you need
something more complex than this, a) edit your shell startup
files to set PATH/LD_LIBRARY_PATH properly on the remove
node, or b) use some new/to-be-defined options that
explicitly allow setting the bindir/libdir on the remote
node. We decided to implement these options (e.g.,
--remote-bindir and --remote-libdir) to orterun when it
actually becomes a problem for someone (vs. a hypothetical
situation).
Hence, for now, we simply take the basename of this install's
libdir and bindir and use it to append this install's prefix
and use that on the remote node.
*/
lib_base = opal_basename(opal_install_dirs.libdir);
bin_base = opal_basename(opal_install_dirs.bindir);
/*
* Iterate through each of the nodes
*/
for(nnode=0; nnode < map->num_nodes; nnode++) {
pid_t pid;
char *exec_path;
char **exec_argv;
/* if this daemon already exists, don't launch it! */
if (nodes[nnode]->daemon_launched) {
continue;
}
/* setup node name */
free(argv[node_name_index1]);
if (NULL != nodes[nnode]->username &&
0 != strlen (nodes[nnode]->username)) {
asprintf (&argv[node_name_index1], "%s@%s",
nodes[nnode]->username, nodes[nnode]->name);
} else {
argv[node_name_index1] = strdup(nodes[nnode]->name);
}
free(argv[node_name_index2]);
argv[node_name_index2] = strdup(nodes[nnode]->name);
/* fork a child to exec the submit/ssh session */
pid = fork();
if (pid < 0) {
ORTE_ERROR_LOG(ORTE_ERR_SYS_LIMITS_CHILDREN);
rc = ORTE_ERR_SYS_LIMITS_CHILDREN;
goto cleanup;
}
/* child */
if (pid == 0) {
char* name_string;
char** env;
char* var;
long fd, fdmax = sysconf(_SC_OPEN_MAX);
if (mca_plm_submit_component.debug) {
orte_output(0, "plm:submit: launching on node %s\n",
rmaps_node->nodename);
}
/* We don't need to sense an oversubscribed condition and set the sched_yield
* for the node as we are only launching the daemons at this time. The daemons
* are now smart enough to set the oversubscribed condition themselves when
* they launch the local procs.
*/
/* Is this a local launch?
*
* Not all node names may be resolvable (if we found
* localhost in the hostfile, for example). So first
* check trivial case of node_name being same as the
* current nodename, which must be local. If that doesn't
* match, check using ifislocal().
*/
if (!mca_plm_submit_component.force_submit &&
(0 == strcmp(nodes[nnode]->name, orte_process_info.nodename) ||
opal_ifislocal(nodes[nnode]->name))) {
if (mca_plm_submit_component.debug) {
orte_output(0, "plm:submit: %s is a LOCAL node\n",
nodes[nnode]->name);
}
exec_path = opal_path_findv(argv[local_exec_index], 0, environ, NULL);
if (NULL == exec_path && NULL == prefix_dir) {
rc = orte_plm_submit_fill_exec_path (&exec_path);
if (ORTE_SUCCESS != rc) {
/* don't normally ERROR_LOG this problem as the function has already
* printed out a nice error message for us - do the ERROR_LOG only
* when we are in debug mode so we can see where it occurred
*/
if (mca_plm_submit_component.debug) {
ORTE_ERROR_LOG(rc);
}
exit(-1); /* the forked process MUST exit */
}
} else {
if (NULL != prefix_dir) {
exec_path = opal_os_path( false, prefix_dir, bin_base, mca_plm_submit_component.orted, NULL );
}
/* If we yet did not fill up the execpath, do so now */
if (NULL == exec_path) {
rc = orte_plm_submit_fill_exec_path (&exec_path);
if (ORTE_SUCCESS != rc) {
/* don't normally ERROR_LOG this problem as the function has already
* printed out a nice error message for us - do the ERROR_LOG only
* when we are in debug mode so we can see where it occurred
*/
if (mca_plm_submit_component.debug) {
ORTE_ERROR_LOG(rc);
}
exit(-1); /* the forked process MUST exit */
}
}
}
/* If we have a prefix, then modify the PATH and
LD_LIBRARY_PATH environment variables. We're
already in the child process, so it's ok to modify
environ. */
if (NULL != prefix_dir) {
char *oldenv, *newenv;
/* Reset PATH */
newenv = opal_os_path( false, prefix_dir, bin_base, NULL );
oldenv = getenv("PATH");
if (NULL != oldenv) {
char *temp;
asprintf(&temp, "%s:%s", newenv, oldenv );
free( newenv );
newenv = temp;
}
opal_setenv("PATH", newenv, true, &environ);
if (mca_plm_submit_component.debug) {
orte_output(0, "plm:submit: reset PATH: %s", newenv);
}
free(newenv);
/* Reset LD_LIBRARY_PATH */
newenv = opal_os_path( false, prefix_dir, lib_base, NULL );
oldenv = getenv("LD_LIBRARY_PATH");
if (NULL != oldenv) {
char* temp;
asprintf(&temp, "%s:%s", newenv, oldenv);
free(newenv);
newenv = temp;
}
opal_setenv("LD_LIBRARY_PATH", newenv, true, &environ);
if (mca_plm_submit_component.debug) {
orte_output(0, "plm:submit: reset LD_LIBRARY_PATH: %s",
newenv);
}
free(newenv);
}
/* Since this is a local execution, we need to
potentially whack the final ")" in the argv (if
sh/csh conditionals, from above). Note that we're
modifying the argv[] in the child process, so
there's no need to save this and restore it
afterward -- the parent's argv[] is unmodified. */
if (NULL != argv[local_exec_index_end]) {
free(argv[local_exec_index_end]);
argv[local_exec_index_end] = NULL;
}
/* tell the daemon to setup its own process session/group */
opal_argv_append(&argc, &argv, "--set-sid");
exec_argv = &argv[local_exec_index];
/* Finally, chdir($HOME) because we're making the
assumption that this is what will happen on
remote nodes (via submit/ssh). This allows a user
to specify a path that is relative to $HOME for
both the cwd and argv[0] and it will work on
all nodes -- including the local nost.
Otherwise, it would work on remote nodes and
not the local node. If the user does not start
in $HOME on the remote nodes... well... let's
hope they start in $HOME. :-) */
var = opal_home_directory();
if (NULL != var) {
if (mca_plm_submit_component.debug) {
orte_output(0, "plm:submit: changing to directory %s", var);
}
/* Ignore errors -- what are we going to do?
(and we ignore errors on the remote nodes
in the fork plm, so this is consistent) */
chdir(var);
}
} else {
if (mca_plm_submit_component.debug) {
orte_output(0, "plm:submit: %s is a REMOTE node\n",
nodes[nnode]->name);
}
exec_argv = argv;
exec_path = strdup(mca_plm_submit_component.agent_path);
if (NULL != prefix_dir) {
char *opal_prefix = getenv("OPAL_PREFIX");
if (remote_sh) {
asprintf (&argv[local_exec_index],
"%s%s%s PATH=%s/%s:$PATH ; export PATH ; "
"LD_LIBRARY_PATH=%s/%s:$LD_LIBRARY_PATH ; export LD_LIBRARY_PATH ; "
"%s/%s/%s",
(opal_prefix != NULL ? "OPAL_PREFIX=" : ""),
(opal_prefix != NULL ? opal_prefix : ""),
(opal_prefix != NULL ? " ;" : ""),
prefix_dir, bin_base,
prefix_dir, lib_base,
prefix_dir, bin_base,
mca_plm_submit_component.orted);
} else if (remote_csh) {
/* [t]csh is a bit more challenging -- we
have to check whether LD_LIBRARY_PATH
is already set before we try to set it.
Must be very careful about obeying
[t]csh's order of evaluation and not
using a variable before it is defined.
See this thread for more details:
http://www.open-mpi.org/community/lists/users/2006/01/0517.php. */
asprintf (&argv[local_exec_index],
"%s%s%s set path = ( %s/%s $path ) ; "
"if ( $?LD_LIBRARY_PATH == 1 ) "
"set OMPI_have_llp ; "
"if ( $?LD_LIBRARY_PATH == 0 ) "
"setenv LD_LIBRARY_PATH %s/%s ; "
"if ( $?OMPI_have_llp == 1 ) "
"setenv LD_LIBRARY_PATH %s/%s:$LD_LIBRARY_PATH ; "
"%s/%s/%s",
(opal_prefix != NULL ? "setenv OPAL_PREFIX " : ""),
(opal_prefix != NULL ? opal_prefix : ""),
(opal_prefix != NULL ? " ;" : ""),
prefix_dir, bin_base,
prefix_dir, lib_base,
prefix_dir, lib_base,
prefix_dir, bin_base,
mca_plm_submit_component.orted);
}
}
}
/* pass the vpid */
rc = orte_util_convert_vpid_to_string(&vpid_string, nodes[nnode]->daemon->name.vpid);
if (ORTE_SUCCESS != rc) {
orte_output(0, "orte_plm_submit: unable to get daemon vpid as string");
exit(-1);
}
free(argv[proc_vpid_index]);
argv[proc_vpid_index] = strdup(vpid_string);
free(vpid_string);
if (!mca_plm_submit_component.debug) {
/* setup stdin */
int fd = open("/dev/null", O_RDWR);
dup2(fd, 0);
close(fd);
}
/* close all file descriptors w/ exception of stdin/stdout/stderr */
for(fd=3; fd<fdmax; fd++)
close(fd);
/* Set signal handlers back to the default. Do this close
to the execve() because the event library may (and likely
will) reset them. If we don't do this, the event
library may have left some set that, at least on some
OS's, don't get reset via fork() or exec(). Hence, the
orted could be unkillable (for example). */
set_handler_default(SIGTERM);
set_handler_default(SIGINT);
set_handler_default(SIGHUP);
set_handler_default(SIGPIPE);
set_handler_default(SIGCHLD);
/* Unblock all signals, for many of the same reasons that
we set the default handlers, above. This is noticable
on Linux where the event library blocks SIGTERM, but we
don't want that blocked by the orted (or, more
specifically, we don't want it to be blocked by the
orted and then inherited by the ORTE processes that it
forks, making them unkillable by SIGTERM). */
sigprocmask(0, 0, &sigs);
sigprocmask(SIG_UNBLOCK, &sigs, 0);
/* setup environment */
env = opal_argv_copy(environ);
var = mca_base_param_environ_variable("seed",NULL,NULL);
opal_setenv(var, "0", true, &env);
/* exec the daemon */
if (mca_plm_submit_component.debug) {
param = opal_argv_join(exec_argv, ' ');
if (NULL != param) {
orte_output(0, "plm:submit: executing: (%s) [%s]", exec_path, param);
free(param);
}
}
execve(exec_path, exec_argv, env);
orte_output(0, "plm:submit: execv of %s failed with errno=%s(%d)\n",
exec_path, strerror(errno), errno);
exit(-1);
} else { /* father */
/* indicate this daemon has been launched */
nodes[nnode]->daemon->state = ORTE_PROC_STATE_LAUNCHED;
OPAL_THREAD_LOCK(&mca_plm_submit_component.lock);
/* This situation can lead to a deadlock if '--debug-daemons' is set.
* However, the deadlock condition is tested at the begining of this
* function, so we're quite confident it should not happens here.
*/
if (mca_plm_submit_component.num_children++ >=
mca_plm_submit_component.num_concurrent) {
opal_condition_wait(&mca_plm_submit_component.cond, &mca_plm_submit_component.lock);
}
OPAL_THREAD_UNLOCK(&mca_plm_submit_component.lock);
/* setup callback on sigchild - wait until setup above is complete
* as the callback can occur in the call to orte_wait_cb
*/
orte_wait_cb(pid, orte_plm_submit_wait_daemon, NULL);
/* if required - add delay to avoid problems w/ X11 authentication */
if (mca_plm_submit_component.debug && mca_plm_submit_component.delay) {
sleep(mca_plm_submit_component.delay);
}
}
}
/* wait for daemons to callback */
if (ORTE_SUCCESS != (rc = orte_plm_base_daemon_callback(map->num_new_daemons))) {
ORTE_OUTPUT_VERBOSE((1, orte_plm_globals.output,
"%s plm:submit: daemon launch failed for job %s on error %s",
ORTE_NAME_PRINT(ORTE_PROC_MY_NAME),
ORTE_JOBID_PRINT(active_job), ORTE_ERROR_NAME(rc)));
goto cleanup;
}
launch_apps:
if (ORTE_SUCCESS != (rc = orte_plm_base_launch_apps(active_job))) {
ORTE_OUTPUT_VERBOSE((1, orte_plm_globals.output,
"%s plm:submit: launch of apps failed for job %s on error %s",
ORTE_NAME_PRINT(ORTE_PROC_MY_NAME),
ORTE_JOBID_PRINT(active_job), ORTE_ERROR_NAME(rc)));
goto cleanup;
}
/* get here if launch went okay */
failed_launch = false;
cleanup:
if (NULL != lib_base) {
free(lib_base);
}
if (NULL != bin_base) {
free(bin_base);
}
if (NULL != argv) {
opal_argv_free(argv);
}
/* check for failed launch - if so, force terminate */
if (failed_launch) {
orte_plm_base_launch_failed(jdata->jobid, false, -1, 0, ORTE_JOB_STATE_FAILED_TO_START);
}
return rc;
}
/**
* Terminate all processes for a given job
*/
int orte_plm_submit_terminate_job(orte_jobid_t jobid)
{
int rc;
/* order them to kill their local procs for this job */
if (ORTE_SUCCESS != (rc = orte_plm_base_orted_kill_local_procs(jobid))) {
ORTE_ERROR_LOG(rc);
}
return rc;
}
/**
* Terminate the orteds for a given job
*/
int orte_plm_submit_terminate_orteds(void)
{
int rc;
/* now tell them to die! */
if (ORTE_SUCCESS != (rc = orte_plm_base_orted_exit())) {
ORTE_ERROR_LOG(rc);
}
return rc;
}
int orte_plm_submit_signal_job(orte_jobid_t jobid, int32_t signal)
{
int rc;
/* order them to pass this signal to their local procs */
if (ORTE_SUCCESS != (rc = orte_plm_base_orted_signal_local_procs(jobid, signal))) {
ORTE_ERROR_LOG(rc);
}
return rc;
}
int orte_plm_submit_finalize(void)
{
int rc;
/* cleanup any pending recvs */
if (ORTE_SUCCESS != (rc = orte_plm_base_comm_stop())) {
ORTE_ERROR_LOG(rc);
}
return rc;
}
/**
* Handle threading issues.
*/
#if OMPI_HAVE_POSIX_THREADS && OMPI_THREADS_HAVE_DIFFERENT_PIDS && OMPI_ENABLE_PROGRESS_THREADS
struct orte_plm_submit_stack_t {
opal_condition_t cond;
opal_mutex_t mutex;
bool complete;
orte_jobid_t jobid;
int rc;
};
typedef struct orte_plm_submit_stack_t orte_plm_submit_stack_t;
static void orte_plm_submit_stack_construct(orte_plm_submit_stack_t* stack)
{
OBJ_CONSTRUCT(&stack->mutex, opal_mutex_t);
OBJ_CONSTRUCT(&stack->cond, opal_condition_t);
stack->rc = 0;
stack->complete = false;
}
static void orte_plm_submit_stack_destruct(orte_plm_submit_stack_t* stack)
{
OBJ_DESTRUCT(&stack->mutex);
OBJ_DESTRUCT(&stack->cond);
}
static OBJ_CLASS_INSTANCE(
orte_plm_submit_stack_t,
opal_object_t,
orte_plm_submit_stack_construct,
orte_plm_submit_stack_destruct);
static void orte_plm_submit_launch_cb(int fd, short event, void* args)
{
orte_plm_submit_stack_t *stack = (orte_plm_submit_stack_t*)args;
OPAL_THREAD_LOCK(&stack->mutex);
stack->rc = orte_plm_submit_launch(stack->jobid);
stack->complete = true;
opal_condition_signal(&stack->cond);
OPAL_THREAD_UNLOCK(&stack->mutex);
}
static int orte_plm_submit_launch_threaded(orte_jobid_t jobid)
{
struct timeval tv = { 0, 0 };
struct opal_event event;
struct orte_plm_submit_stack_t stack;
OBJ_CONSTRUCT(&stack, orte_plm_submit_stack_t);
stack.jobid = jobid;
if( opal_event_progress_thread() ) {
stack.rc = orte_plm_submit_launch( jobid );
} else {
opal_evtimer_set(&event, orte_plm_submit_launch_cb, &stack);
opal_evtimer_add(&event, &tv);
OPAL_THREAD_LOCK(&stack.mutex);
while (stack.complete == false) {
opal_condition_wait(&stack.cond, &stack.mutex);
}
OPAL_THREAD_UNLOCK(&stack.mutex);
}
OBJ_DESTRUCT(&stack);
return stack.rc;
}
#endif
static void set_handler_default(int sig)
{
struct sigaction act;
act.sa_handler = SIG_DFL;
act.sa_flags = 0;
sigemptyset(&act.sa_mask);
sigaction(sig, &act, (struct sigaction *)0);
}
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