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openmpi/orte/mca/odls/base/odls_base_open.c
Ralph Castain 6310361532 At long last, the fabled revision to the affinity system has arrived. A more detailed explanation of how this all works will be presented here:
https://svn.open-mpi.org/trac/ompi/wiki/ProcessPlacement

The wiki page is incomplete at the moment, but I hope to complete it over the next few days. I will provide updates on the devel list. As the wiki page states, the default and most commonly used options remain unchanged (except as noted below). New, esoteric and complex options have been added, but unless you are a true masochist, you are unlikely to use many of them beyond perhaps an initial curiosity-motivated experimentation.

In a nutshell, this commit revamps the map/rank/bind procedure to take into account topology info on the compute nodes. I have, for the most part, preserved the default behaviors, with three notable exceptions:

1. I have at long last bowed my head in submission to the system admin's of managed clusters. For years, they have complained about our default of allowing users to oversubscribe nodes - i.e., to run more processes on a node than allocated slots. Accordingly, I have modified the default behavior: if you are running off of hostfile/dash-host allocated nodes, then the default is to allow oversubscription. If you are running off of RM-allocated nodes, then the default is to NOT allow oversubscription. Flags to override these behaviors are provided, so this only affects the default behavior.

2. both cpus/rank and stride have been removed. The latter was demanded by those who didn't understand the purpose behind it - and I agreed as the users who requested it are no longer using it. The former was removed temporarily pending implementation.

3. vm launch is now the sole method for starting OMPI. It was just too darned hard to maintain multiple launch procedures - maybe someday, provided someone can demonstrate a reason to do so.

As Jeff stated, it is impossible to fully test a change of this size. I have tested it on Linux and Mac, covering all the default and simple options, singletons, and comm_spawn. That said, I'm sure others will find problems, so I'll be watching MTT results until this stabilizes.

This commit was SVN r25476.
2011-11-15 03:40:11 +00:00

305 строки
9.6 KiB
C

/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2011 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2010-2011 Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2011 Cisco Systems, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "orte_config.h"
#include "orte/constants.h"
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#if !ORTE_DISABLE_FULL_SUPPORT
#include "opal/class/opal_ring_buffer.h"
#include "opal/mca/mca.h"
#include "opal/mca/base/base.h"
#include "opal/mca/base/mca_base_param.h"
#include "opal/mca/hwloc/hwloc.h"
#include "opal/util/output.h"
#include "opal/util/path.h"
#include "opal/util/argv.h"
#include "opal/threads/threads.h"
#include "orte/mca/plm/plm_types.h"
#include "orte/util/name_fns.h"
#include "orte/runtime/orte_globals.h"
#include "orte/util/show_help.h"
#include "orte/util/parse_options.h"
#include "orte/mca/ess/ess.h"
#include "orte/mca/odls/base/odls_private.h"
#endif
#include "orte/mca/odls/base/base.h"
/*
* The following file was created by configure. It contains extern
* statements and the definition of an array of pointers to each
* component's public mca_base_component_t struct.
*/
#include "orte/mca/odls/base/static-components.h"
#if ORTE_DISABLE_FULL_SUPPORT
/* have to include a bogus function here so that
* the build system sees at least one function
* in the library
*/
int orte_odls_base_open(void)
{
return ORTE_SUCCESS;
}
#else
/*
* Instantiate globals
*/
orte_odls_base_module_t orte_odls;
/*
* Framework global variables
*/
orte_odls_base_t orte_odls_base;
orte_odls_globals_t orte_odls_globals;
/**
* Function for finding and opening either all MCA components, or the one
* that was specifically requested via a MCA parameter.
*/
int orte_odls_base_open(void)
{
char **ranks=NULL, *tmp;
int i, rank;
orte_namelist_t *nm;
bool xterm_hold;
/* Debugging / verbose output. Always have stream open, with
verbose set by the mca open system... */
orte_odls_globals.output = opal_output_open(NULL);
mca_base_param_reg_int_name("odls", "base_sigkill_timeout",
"Time to wait for a process to die after issuing a kill signal to it",
false, false, 1, &orte_odls_globals.timeout_before_sigkill);
/* initialize the global list of local children and job data */
OBJ_CONSTRUCT(&orte_local_children, opal_list_t);
OBJ_CONSTRUCT(&orte_local_children_lock, opal_mutex_t);
OBJ_CONSTRUCT(&orte_local_children_cond, opal_condition_t);
OBJ_CONSTRUCT(&orte_local_jobdata, opal_list_t);
OBJ_CONSTRUCT(&orte_local_jobdata_lock, opal_mutex_t);
OBJ_CONSTRUCT(&orte_local_jobdata_cond, opal_condition_t);
/* initialize ODLS globals */
OBJ_CONSTRUCT(&orte_odls_globals.mutex, opal_mutex_t);
OBJ_CONSTRUCT(&orte_odls_globals.cond, opal_condition_t);
OBJ_CONSTRUCT(&orte_odls_globals.xterm_ranks, opal_list_t);
orte_odls_globals.xtermcmd = NULL;
orte_odls_globals.dmap = NULL;
orte_odls_globals.debugger = NULL;
orte_odls_globals.debugger_launched = false;
/* check if the user requested that we display output in xterms */
if (NULL != orte_xterm) {
/* construct a list of ranks to be displayed */
xterm_hold = false;
orte_util_parse_range_options(orte_xterm, &ranks);
for (i=0; i < opal_argv_count(ranks); i++) {
if (0 == strcmp(ranks[i], "BANG")) {
xterm_hold = true;
continue;
}
nm = OBJ_NEW(orte_namelist_t);
rank = strtol(ranks[i], NULL, 10);
if (-1 == rank) {
/* wildcard */
nm->name.vpid = ORTE_VPID_WILDCARD;
ORTE_EPOCH_SET(nm->name.epoch,ORTE_EPOCH_WILDCARD);
} else if (rank < 0) {
/* error out on bozo case */
orte_show_help("help-odls-base.txt",
"orte-odls-base:xterm-neg-rank",
true, rank);
return ORTE_ERROR;
} else {
/* we can't check here if the rank is out of
* range as we don't yet know how many ranks
* will be in the job - we'll check later
*/
nm->name.vpid = rank;
ORTE_EPOCH_SET(nm->name.epoch,orte_ess.proc_get_epoch(&nm->name));
}
opal_list_append(&orte_odls_globals.xterm_ranks, &nm->item);
}
opal_argv_free(ranks);
/* construct the xtermcmd */
orte_odls_globals.xtermcmd = NULL;
tmp = opal_find_absolute_path("xterm");
if (NULL == tmp) {
return ORTE_ERROR;
}
opal_argv_append_nosize(&orte_odls_globals.xtermcmd, tmp);
free(tmp);
opal_argv_append_nosize(&orte_odls_globals.xtermcmd, "-T");
opal_argv_append_nosize(&orte_odls_globals.xtermcmd, "save");
if (xterm_hold) {
opal_argv_append_nosize(&orte_odls_globals.xtermcmd, "-hold");
}
opal_argv_append_nosize(&orte_odls_globals.xtermcmd, "-e");
}
/* Open up all available components */
if (ORTE_SUCCESS !=
mca_base_components_open("odls", orte_odls_globals.output,
mca_odls_base_static_components,
&orte_odls_base.available_components, true)) {
return ORTE_ERROR;
}
/* are there components available for use ? -
* orte_odls_base.available_components is always initialized */
if(0 < opal_list_get_size(&(orte_odls_base.available_components))) {
orte_odls_base.components_available = true;
} else {
orte_odls_base.components_available = false;
}
/* All done */
return ORTE_SUCCESS;
}
/* instance the child list object */
static void orte_odls_child_constructor(orte_odls_child_t *ptr)
{
ptr->name = NULL;
ptr->restarts = 0;
ptr->pid = 0;
ptr->app_idx = 0;
ptr->alive = false;
ptr->coll_recvd = false;
/* set the default state to "failed to start" so
* we can correctly report should something
* go wrong during launch
*/
ptr->state = ORTE_PROC_STATE_FAILED_TO_START;
ptr->exit_code = 0;
ptr->init_recvd = false;
ptr->fini_recvd = false;
ptr->rml_uri = NULL;
ptr->waitpid_recvd = false;
ptr->iof_complete = false;
ptr->do_not_barrier = false;
ptr->notified = false;
OBJ_CONSTRUCT(&ptr->stats, opal_ring_buffer_t);
opal_ring_buffer_init(&ptr->stats, orte_stat_history_size);
#if OPAL_HAVE_HWLOC
ptr->cpu_bitmap = NULL;
#endif
}
static void orte_odls_child_destructor(orte_odls_child_t *ptr)
{
opal_pstats_t *st;
if (NULL != ptr->name) free(ptr->name);
if (NULL != ptr->rml_uri) free(ptr->rml_uri);
while (NULL != (st = (opal_pstats_t*)opal_ring_buffer_pop(&ptr->stats))) {
OBJ_RELEASE(st);
}
OBJ_DESTRUCT(&ptr->stats);
#if OPAL_HAVE_HWLOC
if (NULL != ptr->cpu_bitmap) {
free(ptr->cpu_bitmap);
}
#endif
}
OBJ_CLASS_INSTANCE(orte_odls_child_t,
opal_list_item_t,
orte_odls_child_constructor,
orte_odls_child_destructor);
static void orte_odls_job_constructor(orte_odls_job_t *ptr)
{
OBJ_CONSTRUCT(&ptr->lock, opal_mutex_t);
OBJ_CONSTRUCT(&ptr->cond, opal_condition_t);
ptr->jobid = ORTE_JOBID_INVALID;
ptr->instance = NULL;
ptr->name = NULL;
ptr->state = ORTE_JOB_STATE_UNDEF;
ptr->launch_msg_processed = false;
OBJ_CONSTRUCT(&ptr->apps, opal_pointer_array_t);
opal_pointer_array_init(&ptr->apps, 2, INT_MAX, 2);
ptr->num_apps = 0;
#if OPAL_HAVE_HWLOC
ptr->binding = 0;
#endif
ptr->cpus_per_rank = 1;
ptr->stride = 1;
ptr->controls = 0;
ptr->stdin_target = ORTE_VPID_INVALID;
ptr->total_slots_alloc = 0;
ptr->num_procs = 0;
ptr->num_local_procs = 0;
ptr->pmap = NULL;
OBJ_CONSTRUCT(&ptr->collection_bucket, opal_buffer_t);
OBJ_CONSTRUCT(&ptr->local_collection, opal_buffer_t);
ptr->collective_type = ORTE_GRPCOMM_COLL_NONE;
ptr->num_contributors = 0;
ptr->num_participating = -1;
ptr->num_collected = 0;
ptr->enable_recovery = false;
}
static void orte_odls_job_destructor(orte_odls_job_t *ptr)
{
int i;
orte_app_context_t *app;
OBJ_DESTRUCT(&ptr->lock);
OBJ_DESTRUCT(&ptr->cond);
if (NULL != ptr->instance) {
free(ptr->instance);
}
if (NULL != ptr->name) {
free(ptr->name);
}
for (i=0; i < ptr->apps.size; i++) {
if (NULL != (app = (orte_app_context_t*)opal_pointer_array_get_item(&ptr->apps, i))) {
OBJ_RELEASE(app);
}
OBJ_DESTRUCT(&ptr->apps);
}
if (NULL != ptr->pmap && NULL != ptr->pmap->bytes) {
free(ptr->pmap->bytes);
free(ptr->pmap);
}
OBJ_DESTRUCT(&ptr->collection_bucket);
OBJ_DESTRUCT(&ptr->local_collection);
}
OBJ_CLASS_INSTANCE(orte_odls_job_t,
opal_list_item_t,
orte_odls_job_constructor,
orte_odls_job_destructor);
#endif