6166278e18
The bug was a race condition in the barrier operation that caused the barrier in MPI_Finalize to fail on very short programs. Scalaiblity was improved by using the daemons to aggregate modex and barrier messages before sending them to the rank=0 proc. Improvement is proportional to ppn, of course, but there really wasn't a scaling problem at low ppn anyway. This modification also paves the way for better allgather operations since now all the data for each node is sitting at the daemon level, and the daemons are now aware that a collective operation on the OOB is underway (so they -can- participate in a collective of their own to support it). Also added better diagnostics to map out the timing associated with MPI_Init - turned on by -mca orte_timing 1. This commit was SVN r17988.
131 строка
4.0 KiB
C
131 строка
4.0 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "orte_config.h"
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#include "orte/constants.h"
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#include "opal/mca/mca.h"
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#include "opal/mca/base/base.h"
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#include "opal/mca/base/mca_base_param.h"
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#include "opal/util/output.h"
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#include "opal/util/trace.h"
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#include "opal/util/argv.h"
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#include "opal/dss/dss.h"
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#include "orte/mca/errmgr/errmgr.h"
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#include "orte/mca/plm/plm_types.h"
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#include "orte/util/name_fns.h"
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#include "orte/runtime/orte_globals.h"
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#include "orte/mca/odls/base/base.h"
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#include "orte/mca/odls/base/odls_private.h"
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/*
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* The following file was created by configure. It contains extern
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* statements and the definition of an array of pointers to each
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* component's public mca_base_component_t struct.
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*/
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#include "orte/mca/odls/base/static-components.h"
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/*
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* Instantiate globals
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*/
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orte_odls_base_module_t orte_odls;
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/* instance the child list object */
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static void orte_odls_child_constructor(orte_odls_child_t *ptr)
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{
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ptr->name = NULL;
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ptr->local_rank = ORTE_VPID_INVALID;
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ptr->pid = 0;
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ptr->app_idx = -1;
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ptr->alive = false;
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ptr->coll_recvd = false;
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/* set the default state to "failed to start" so
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* we can correctly report should something
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* go wrong during launch
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*/
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ptr->state = ORTE_PROC_STATE_FAILED_TO_START;
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ptr->exit_code = 0;
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ptr->cpu_set = 0xffffffff;
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ptr->rml_uri = NULL;
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ptr->slot_list = NULL;
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}
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static void orte_odls_child_destructor(orte_odls_child_t *ptr)
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{
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if (NULL != ptr->name) free(ptr->name);
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if (NULL != ptr->rml_uri) free(ptr->rml_uri);
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if (NULL != ptr->slot_list) free(ptr->slot_list);
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}
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OBJ_CLASS_INSTANCE(orte_odls_child_t,
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opal_list_item_t,
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orte_odls_child_constructor,
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orte_odls_child_destructor);
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/*
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* Framework global variables
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*/
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orte_odls_base_t orte_odls_base;
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orte_odls_globals_t orte_odls_globals;
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/**
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* Function for finding and opening either all MCA components, or the one
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* that was specifically requested via a MCA parameter.
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*/
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int orte_odls_base_open(void)
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{
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/* Debugging / verbose output. Always have stream open, with
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verbose set by the mca open system... */
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orte_odls_globals.output = opal_output_open(NULL);
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mca_base_param_reg_int_name("odls", "base_sigkill_timeout",
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"Time to wait for a process to die after issuing a kill signal to it",
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false, false, 1, &orte_odls_globals.timeout_before_sigkill);
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/* initialize globals */
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OBJ_CONSTRUCT(&orte_odls_globals.mutex, opal_mutex_t);
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OBJ_CONSTRUCT(&orte_odls_globals.cond, opal_condition_t);
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OBJ_CONSTRUCT(&orte_odls_globals.children, opal_list_t);
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/* Open up all available components */
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if (ORTE_SUCCESS !=
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mca_base_components_open("odls", orte_odls_globals.output,
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mca_odls_base_static_components,
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&orte_odls_base.available_components, true)) {
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return ORTE_ERROR;
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}
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/* are there components available for use ? -
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* orte_odls_base.available_components is always initialized */
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if(0 < opal_list_get_size(&(orte_odls_base.available_components))) {
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orte_odls_base.components_available = true;
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} else {
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orte_odls_base.components_available = false;
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}
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/* All done */
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return ORTE_SUCCESS;
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}
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