309 строки
13 KiB
C
309 строки
13 KiB
C
/*
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* Copyright (c) 2004-2007 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) 2004-2009 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 (c) 2008 Sun Microsystems, Inc. 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 "ompi_config.h"
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#include "coll_tuned.h"
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#include <stdio.h>
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#include "mpi.h"
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#include "ompi/communicator/communicator.h"
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#include "opal/mca/base/mca_base_param.h"
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#include "ompi/mca/coll/coll.h"
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#include "ompi/mca/coll/base/base.h"
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#include "coll_tuned.h"
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#include "coll_tuned_topo.h"
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#include "coll_tuned_dynamic_rules.h"
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#include "coll_tuned_dynamic_file.h"
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static int tuned_module_enable(mca_coll_base_module_t *module,
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struct ompi_communicator_t *comm);
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/*
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* Initial query function that is invoked during MPI_INIT, allowing
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* this component to disqualify itself if it doesn't support the
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* required level of thread support.
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*/
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int ompi_coll_tuned_init_query(bool enable_progress_threads,
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bool enable_mpi_threads)
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{
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return OMPI_SUCCESS;
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}
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/*
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* Invoked when there's a new communicator that has been created.
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* Look at the communicator and decide which set of functions and
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* priority we want to return.
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*/
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mca_coll_base_module_t *
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ompi_coll_tuned_comm_query(struct ompi_communicator_t *comm, int *priority)
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{
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mca_coll_tuned_module_t *tuned_module;
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OPAL_OUTPUT((ompi_coll_tuned_stream, "coll:tuned:module_tuned query called"));
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/**
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* No support for inter-communicator yet.
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*/
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if (OMPI_COMM_IS_INTER(comm)) {
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*priority = 0;
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return NULL;
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}
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/**
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* If it is inter-communicator and size is less than 2 we have specialized modules
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* to handle the intra collective communications.
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*/
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if (OMPI_COMM_IS_INTRA(comm) && ompi_comm_size(comm) < 2) {
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*priority = 0;
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return NULL;
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}
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tuned_module = OBJ_NEW(mca_coll_tuned_module_t);
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if (NULL == tuned_module) return NULL;
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*priority = ompi_coll_tuned_priority;
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/*
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* Choose whether to use [intra|inter] decision functions
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* and if using fixed OR dynamic rule sets.
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* Right now you cannot mix them, maybe later on it can be changed
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* but this would probably add an extra if and funct call to the path
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*/
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tuned_module->super.coll_module_enable = tuned_module_enable;
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tuned_module->super.ft_event = mca_coll_tuned_ft_event;
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/* By default stick with the fied version of the tuned collectives. Later on,
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* when the module get enabled, set the correct version based on the availability
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* of the dynamic rules.
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*/
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tuned_module->super.coll_allgather = ompi_coll_tuned_allgather_intra_dec_fixed;
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tuned_module->super.coll_allgatherv = ompi_coll_tuned_allgatherv_intra_dec_fixed;
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tuned_module->super.coll_allreduce = ompi_coll_tuned_allreduce_intra_dec_fixed;
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tuned_module->super.coll_alltoall = ompi_coll_tuned_alltoall_intra_dec_fixed;
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tuned_module->super.coll_alltoallv = ompi_coll_tuned_alltoallv_intra_dec_fixed;
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tuned_module->super.coll_alltoallw = NULL;
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tuned_module->super.coll_barrier = ompi_coll_tuned_barrier_intra_dec_fixed;
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tuned_module->super.coll_bcast = ompi_coll_tuned_bcast_intra_dec_fixed;
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tuned_module->super.coll_exscan = NULL;
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tuned_module->super.coll_gather = ompi_coll_tuned_gather_intra_dec_fixed;
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tuned_module->super.coll_gatherv = NULL;
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tuned_module->super.coll_reduce = ompi_coll_tuned_reduce_intra_dec_fixed;
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tuned_module->super.coll_reduce_scatter = ompi_coll_tuned_reduce_scatter_intra_dec_fixed;
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tuned_module->super.coll_scan = NULL;
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tuned_module->super.coll_scatter = ompi_coll_tuned_scatter_intra_dec_fixed;
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tuned_module->super.coll_scatterv = NULL;
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return &(tuned_module->super);
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}
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/* We put all routines that handle the MCA user forced algorithm and parameter choices here */
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/* recheck the setting of forced, called on module create (i.e. for each new comm) */
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static int
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ompi_coll_tuned_forced_getvalues( enum COLLTYPE type,
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coll_tuned_force_algorithm_params_t *forced_values )
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{
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coll_tuned_force_algorithm_mca_param_indices_t* mca_params;
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mca_params = &(ompi_coll_tuned_forced_params[type]);
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/**
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* Set the selected algorithm to 0 by default. Later on we can check this against 0
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* to see if it was setted explicitly (if we suppose that setting it to 0 enable the
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* default behavior) or not.
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*/
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forced_values->algorithm = 0;
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mca_base_param_lookup_int (mca_params->algorithm_param_index, &(forced_values->algorithm));
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if( BARRIER != type ) {
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mca_base_param_lookup_int (mca_params->segsize_param_index, &(forced_values->segsize));
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mca_base_param_lookup_int (mca_params->tree_fanout_param_index, &(forced_values->tree_fanout));
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mca_base_param_lookup_int (mca_params->chain_fanout_param_index, &(forced_values->chain_fanout));
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mca_base_param_lookup_int (mca_params->max_requests_param_index, &(forced_values->max_requests));
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}
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return (MPI_SUCCESS);
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}
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#define COLL_TUNED_EXECUTE_IF_DYNAMIC(DATA, TYPE, EXECUTE) \
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{ \
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int need_dynamic_decision = 0; \
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ompi_coll_tuned_forced_getvalues( (TYPE), &((DATA)->user_forced[(TYPE)]) ); \
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(DATA)->com_rules[(TYPE)] = NULL; \
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if( 0 != (DATA)->user_forced[(TYPE)].algorithm ) { \
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need_dynamic_decision = 1; \
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EXECUTE; \
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} \
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if( NULL != mca_coll_tuned_component.all_base_rules ) { \
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(DATA)->com_rules[(TYPE)] \
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= ompi_coll_tuned_get_com_rule_ptr( mca_coll_tuned_component.all_base_rules, \
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(TYPE), size ); \
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if( NULL != (DATA)->com_rules[(TYPE)] ) { \
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need_dynamic_decision = 1; \
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} \
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} \
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if( 1 == need_dynamic_decision ) { \
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OPAL_OUTPUT((ompi_coll_tuned_stream,"coll:tuned: enable dynamic selection for "#TYPE)); \
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ompi_coll_tuned_use_dynamic_rules = 1; \
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EXECUTE; \
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} \
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}
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/*
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* Init module on the communicator
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*/
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static int
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tuned_module_enable( mca_coll_base_module_t *module,
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struct ompi_communicator_t *comm )
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{
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int size;
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mca_coll_tuned_module_t *tuned_module = (mca_coll_tuned_module_t *) module;
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mca_coll_tuned_comm_t *data = NULL;
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OPAL_OUTPUT((ompi_coll_tuned_stream,"coll:tuned:module_init called."));
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/* Allocate the data that hangs off the communicator */
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if (OMPI_COMM_IS_INTER(comm)) {
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size = ompi_comm_remote_size(comm);
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} else {
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size = ompi_comm_size(comm);
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}
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/**
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* we still malloc data as it is used by the TUNED modules
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* if we don't allocate it and fall back to a BASIC module routine then confuses debuggers
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* we place any special info after the default data
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*
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* BUT on very large systems we might not be able to allocate all this memory so
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* we do check a MCA parameter to see if if we should allocate this memory
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*
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* The default is set very high
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*
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*/
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/* if we within the memory/size limit, allow preallocated data */
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if( size <= ompi_coll_tuned_preallocate_memory_comm_size_limit ) {
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data = (mca_coll_tuned_comm_t*)malloc(sizeof(struct mca_coll_tuned_comm_t) +
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(sizeof(ompi_request_t *) * size * 2));
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if (NULL == data) {
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return OMPI_ERROR;
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}
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data->mcct_reqs = (ompi_request_t **) (data + 1);
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data->mcct_num_reqs = size * 2;
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} else {
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data = (mca_coll_tuned_comm_t*)malloc(sizeof(struct mca_coll_tuned_comm_t));
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if (NULL == data) {
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return OMPI_ERROR;
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}
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data->mcct_reqs = (ompi_request_t **) NULL;
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data->mcct_num_reqs = 0;
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}
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if (ompi_coll_tuned_use_dynamic_rules) {
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OPAL_OUTPUT((ompi_coll_tuned_stream,"coll:tuned:module_init MCW & Dynamic"));
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/**
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* Reset it to 0, it will be enabled again if we discover any need for dynamic decisions.
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*/
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ompi_coll_tuned_use_dynamic_rules = 0;
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/**
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* next dynamic state, recheck all forced rules as well
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* warning, we should check to make sure this is really an INTRA comm here...
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*/
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COLL_TUNED_EXECUTE_IF_DYNAMIC(data, ALLGATHER,
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tuned_module->super.coll_allgather = ompi_coll_tuned_allgather_intra_dec_dynamic);
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COLL_TUNED_EXECUTE_IF_DYNAMIC(data, ALLGATHERV,
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tuned_module->super.coll_allgatherv = ompi_coll_tuned_allgatherv_intra_dec_dynamic);
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COLL_TUNED_EXECUTE_IF_DYNAMIC(data, ALLREDUCE,
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tuned_module->super.coll_allreduce = ompi_coll_tuned_allreduce_intra_dec_dynamic);
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COLL_TUNED_EXECUTE_IF_DYNAMIC(data, ALLTOALL,
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tuned_module->super.coll_alltoall = ompi_coll_tuned_alltoall_intra_dec_dynamic);
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COLL_TUNED_EXECUTE_IF_DYNAMIC(data, ALLTOALLV,
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tuned_module->super.coll_alltoallv = ompi_coll_tuned_alltoallv_intra_dec_dynamic);
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COLL_TUNED_EXECUTE_IF_DYNAMIC(data, ALLTOALLW,
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tuned_module->super.coll_alltoallw = NULL);
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COLL_TUNED_EXECUTE_IF_DYNAMIC(data, BARRIER,
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tuned_module->super.coll_barrier = ompi_coll_tuned_barrier_intra_dec_dynamic);
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COLL_TUNED_EXECUTE_IF_DYNAMIC(data, BCAST,
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tuned_module->super.coll_bcast = ompi_coll_tuned_bcast_intra_dec_dynamic);
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COLL_TUNED_EXECUTE_IF_DYNAMIC(data, EXSCAN,
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tuned_module->super.coll_exscan = NULL);
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COLL_TUNED_EXECUTE_IF_DYNAMIC(data, GATHER,
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tuned_module->super.coll_gather = ompi_coll_tuned_gather_intra_dec_dynamic);
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COLL_TUNED_EXECUTE_IF_DYNAMIC(data, GATHERV,
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tuned_module->super.coll_gatherv = NULL);
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COLL_TUNED_EXECUTE_IF_DYNAMIC(data, REDUCE,
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tuned_module->super.coll_reduce = ompi_coll_tuned_reduce_intra_dec_dynamic);
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COLL_TUNED_EXECUTE_IF_DYNAMIC(data, REDUCESCATTER,
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tuned_module->super.coll_reduce_scatter = ompi_coll_tuned_reduce_scatter_intra_dec_dynamic);
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COLL_TUNED_EXECUTE_IF_DYNAMIC(data, SCAN,
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tuned_module->super.coll_scan = NULL);
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COLL_TUNED_EXECUTE_IF_DYNAMIC(data, SCATTER,
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tuned_module->super.coll_scatter = ompi_coll_tuned_scatter_intra_dec_dynamic);
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COLL_TUNED_EXECUTE_IF_DYNAMIC(data, SCATTERV,
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tuned_module->super.coll_scatterv = NULL);
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if( 0 == ompi_coll_tuned_use_dynamic_rules ) {
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/* no real need for dynamic decisions */
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OPAL_OUTPUT((ompi_coll_tuned_stream, "coll:tuned:module_enable switch back to fixed"
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" decision by lack of dynamic rules"));
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}
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}
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/* general n fan out tree */
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data->cached_ntree = NULL;
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/* binary tree */
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data->cached_bintree = NULL;
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/* binomial tree */
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data->cached_bmtree = NULL;
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/* binomial tree */
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data->cached_in_order_bmtree = NULL;
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/* chains (fanout followed by pipelines) */
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data->cached_chain = NULL;
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/* standard pipeline */
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data->cached_pipeline = NULL;
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/* in-order binary tree */
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data->cached_in_order_bintree = NULL;
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/* All done */
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tuned_module->tuned_data = data;
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OPAL_OUTPUT((ompi_coll_tuned_stream,"coll:tuned:module_init Tuned is in use"));
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return OMPI_SUCCESS;
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}
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int mca_coll_tuned_ft_event(int state) {
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if(OPAL_CRS_CHECKPOINT == state) {
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;
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}
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else if(OPAL_CRS_CONTINUE == state) {
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;
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}
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else if(OPAL_CRS_RESTART == state) {
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;
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}
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else if(OPAL_CRS_TERM == state ) {
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;
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}
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else {
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;
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}
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return OMPI_SUCCESS;
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}
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