277 строки
13 KiB
C
277 строки
13 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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/*
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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) 2004-2015 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 (c) 2008 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2015 Los Alamos National Security, LLC. All rights
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* reserved.
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* Copyright (c) 2015 Research Organization for Information Science
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* and Technology (RIST). 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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* These symbols are in a file by themselves to provide nice linker
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* semantics. Since linkers generally pull in symbols by object
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* files, keeping these symbols as the only symbols in this file
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* prevents utility programs such as "ompi_info" from having to import
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* entire components just to query their version and parameters.
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*/
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#include "ompi_config.h"
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#include "opal/util/output.h"
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#include "coll_tuned.h"
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#include "mpi.h"
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#include "ompi/mca/coll/coll.h"
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#include "coll_tuned.h"
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#include "coll_tuned_dynamic_file.h"
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/*
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* Public string showing the coll ompi_tuned component version number
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*/
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const char *ompi_coll_tuned_component_version_string =
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"Open MPI tuned collective MCA component version " OMPI_VERSION;
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/*
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* Global variable
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*/
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int ompi_coll_tuned_stream = -1;
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int ompi_coll_tuned_priority = 30;
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bool ompi_coll_tuned_use_dynamic_rules = false;
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char* ompi_coll_tuned_dynamic_rules_filename = (char*) NULL;
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int ompi_coll_tuned_init_tree_fanout = 4;
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int ompi_coll_tuned_init_chain_fanout = 4;
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int ompi_coll_tuned_init_max_requests = 128;
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int ompi_coll_tuned_alltoall_small_msg = 200;
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int ompi_coll_tuned_alltoall_intermediate_msg = 3000;
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/* forced alogrithm variables */
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/* indices for the MCA parameters */
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coll_tuned_force_algorithm_mca_param_indices_t ompi_coll_tuned_forced_params[COLLCOUNT] = {{0}};
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/* max algorithm values */
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int ompi_coll_tuned_forced_max_algorithms[COLLCOUNT] = {0};
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/*
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* Local function
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*/
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static int tuned_register(void);
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static int tuned_open(void);
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static int tuned_close(void);
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/*
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* Instantiate the public struct with all of our public information
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* and pointers to our public functions in it
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*/
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mca_coll_tuned_component_t mca_coll_tuned_component = {
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/* First, fill in the super */
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{
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/* First, the mca_component_t struct containing meta information
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about the component itself */
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.collm_version = {
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MCA_COLL_BASE_VERSION_2_0_0,
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/* Component name and version */
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.mca_component_name = "tuned",
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MCA_BASE_MAKE_VERSION(component, OMPI_MAJOR_VERSION, OMPI_MINOR_VERSION,
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OMPI_RELEASE_VERSION),
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/* Component open and close functions */
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.mca_open_component = tuned_open,
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.mca_close_component = tuned_close,
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.mca_register_component_params = tuned_register,
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},
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.collm_data = {
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/* The component is checkpoint ready */
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MCA_BASE_METADATA_PARAM_CHECKPOINT
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},
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/* Initialization / querying functions */
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.collm_init_query = ompi_coll_tuned_init_query,
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.collm_comm_query = ompi_coll_tuned_comm_query,
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},
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/* priority of the module */
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0,
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/* Tuned component specific information */
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NULL /* ompi_coll_alg_rule_t ptr */
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};
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static int tuned_register(void)
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{
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/* Use a low priority, but allow other components to be lower */
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ompi_coll_tuned_priority = 30;
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(void) mca_base_component_var_register(&mca_coll_tuned_component.super.collm_version,
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"priority", "Priority of the tuned coll component",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_6,
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MCA_BASE_VAR_SCOPE_READONLY,
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&ompi_coll_tuned_priority);
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/* some initial guesses at topology parameters */
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ompi_coll_tuned_init_tree_fanout = 4;
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(void) mca_base_component_var_register(&mca_coll_tuned_component.super.collm_version,
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"init_tree_fanout",
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"Inital fanout used in the tree topologies for each communicator. This is only an initial guess, if a tuned collective needs a different fanout for an operation, it build it dynamically. This parameter is only for the first guess and might save a little time",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_6,
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MCA_BASE_VAR_SCOPE_READONLY,
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&ompi_coll_tuned_init_tree_fanout);
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ompi_coll_tuned_init_chain_fanout = 4;
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(void) mca_base_component_var_register(&mca_coll_tuned_component.super.collm_version,
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"init_chain_fanout",
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"Inital fanout used in the chain (fanout followed by pipeline) topologies for each communicator. This is only an initial guess, if a tuned collective needs a different fanout for an operation, it build it dynamically. This parameter is only for the first guess and might save a little time",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_6,
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MCA_BASE_VAR_SCOPE_READONLY,
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&ompi_coll_tuned_init_chain_fanout);
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ompi_coll_tuned_alltoall_small_msg = 200;
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(void) mca_base_component_var_register(&mca_coll_tuned_component.super.collm_version,
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"alltoall_small_msg",
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"threshold (if supported) to decide if small MSGs alltoall algorithm will be used",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_6,
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MCA_BASE_VAR_SCOPE_READONLY,
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&ompi_coll_tuned_alltoall_small_msg);
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ompi_coll_tuned_alltoall_intermediate_msg = 3000;
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(void) mca_base_component_var_register(&mca_coll_tuned_component.super.collm_version,
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"alltoall_intermediate_msg",
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"threshold (if supported) to decide if intermediate MSGs alltoall algorithm will be used",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_6,
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MCA_BASE_VAR_SCOPE_READONLY,
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&ompi_coll_tuned_alltoall_intermediate_msg);
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ompi_coll_tuned_use_dynamic_rules = false;
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(void) mca_base_component_var_register(&mca_coll_tuned_component.super.collm_version,
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"use_dynamic_rules",
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"Switch used to decide if we use static (compiled/if statements) or dynamic (built at runtime) decision function rules",
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MCA_BASE_VAR_TYPE_BOOL, NULL, 0, 0,
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OPAL_INFO_LVL_6,
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MCA_BASE_VAR_SCOPE_READONLY,
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&ompi_coll_tuned_use_dynamic_rules);
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ompi_coll_tuned_dynamic_rules_filename = NULL;
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(void) mca_base_component_var_register(&mca_coll_tuned_component.super.collm_version,
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"dynamic_rules_filename",
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"Filename of configuration file that contains the dynamic (@runtime) decision function rules",
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MCA_BASE_VAR_TYPE_STRING, NULL, 0, 0,
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OPAL_INFO_LVL_6,
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MCA_BASE_VAR_SCOPE_READONLY,
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&ompi_coll_tuned_dynamic_rules_filename);
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/* register forced params */
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ompi_coll_tuned_allreduce_intra_check_forced_init(&ompi_coll_tuned_forced_params[ALLREDUCE]);
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ompi_coll_tuned_alltoall_intra_check_forced_init(&ompi_coll_tuned_forced_params[ALLTOALL]);
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ompi_coll_tuned_allgather_intra_check_forced_init(&ompi_coll_tuned_forced_params[ALLGATHER]);
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ompi_coll_tuned_allgatherv_intra_check_forced_init(&ompi_coll_tuned_forced_params[ALLGATHERV]);
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ompi_coll_tuned_alltoallv_intra_check_forced_init(&ompi_coll_tuned_forced_params[ALLTOALLV]);
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ompi_coll_tuned_barrier_intra_check_forced_init(&ompi_coll_tuned_forced_params[BARRIER]);
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ompi_coll_tuned_bcast_intra_check_forced_init(&ompi_coll_tuned_forced_params[BCAST]);
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ompi_coll_tuned_reduce_intra_check_forced_init(&ompi_coll_tuned_forced_params[REDUCE]);
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ompi_coll_tuned_reduce_scatter_intra_check_forced_init(&ompi_coll_tuned_forced_params[REDUCESCATTER]);
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ompi_coll_tuned_gather_intra_check_forced_init(&ompi_coll_tuned_forced_params[GATHER]);
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ompi_coll_tuned_scatter_intra_check_forced_init(&ompi_coll_tuned_forced_params[SCATTER]);
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return OMPI_SUCCESS;
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}
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static int tuned_open(void)
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{
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int rc;
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#if OPAL_ENABLE_DEBUG
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{
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int param;
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param = mca_base_var_find("ompi", "coll", "base", "verbose");
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if (param >= 0) {
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const int *verbose = NULL;
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mca_base_var_get_value(param, &verbose, NULL, NULL);
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if (verbose && verbose[0] > 0) {
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ompi_coll_tuned_stream = opal_output_open(NULL);
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}
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}
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}
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#endif /* OPAL_ENABLE_DEBUG */
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/* now check that the user hasn't overrode any of the decision functions if dynamic rules are enabled */
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/* the user can redo this before every comm dup/create if they like */
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/* this is useful for benchmarking and user knows best tuning */
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/* as this is the component we only lookup the indicies of the mca params */
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/* the actual values are looked up during comm create via module init */
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/* intra functions first */
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/* if dynamic rules allowed then look up dynamic rules config filename, else we leave it an empty filename (NULL) */
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/* by default DISABLE dynamic rules and instead use fixed [if based] rules */
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if (ompi_coll_tuned_use_dynamic_rules) {
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if( ompi_coll_tuned_dynamic_rules_filename ) {
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OPAL_OUTPUT((ompi_coll_tuned_stream,"coll:tuned:component_open Reading collective rules file [%s]",
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ompi_coll_tuned_dynamic_rules_filename));
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rc = ompi_coll_tuned_read_rules_config_file( ompi_coll_tuned_dynamic_rules_filename,
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&(mca_coll_tuned_component.all_base_rules), COLLCOUNT);
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if( rc >= 0 ) {
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OPAL_OUTPUT((ompi_coll_tuned_stream,"coll:tuned:module_open Read %d valid rules\n", rc));
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} else {
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OPAL_OUTPUT((ompi_coll_tuned_stream,"coll:tuned:module_open Reading collective rules file failed\n"));
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mca_coll_tuned_component.all_base_rules = NULL;
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}
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}
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}
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OPAL_OUTPUT((ompi_coll_tuned_stream, "coll:tuned:component_open: done!"));
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return OMPI_SUCCESS;
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}
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/* here we should clean up state stored on the component */
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/* i.e. alg table and dynamic changable rules if allocated etc */
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static int tuned_close(void)
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{
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OPAL_OUTPUT((ompi_coll_tuned_stream, "coll:tuned:component_close: called"));
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/* dealloc alg table if allocated */
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/* dealloc dynamic changable rules if allocated */
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OPAL_OUTPUT((ompi_coll_tuned_stream, "coll:tuned:component_close: done!"));
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if( NULL != mca_coll_tuned_component.all_base_rules ) {
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ompi_coll_tuned_free_all_rules(mca_coll_tuned_component.all_base_rules, COLLCOUNT);
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mca_coll_tuned_component.all_base_rules = NULL;
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}
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return OMPI_SUCCESS;
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}
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static void
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mca_coll_tuned_module_construct(mca_coll_tuned_module_t *module)
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{
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mca_coll_tuned_module_t *tuned_module = (mca_coll_tuned_module_t*) module;
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for( int i = 0; i < COLLCOUNT; i++ ) {
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tuned_module->user_forced[i].algorithm = 0;
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tuned_module->com_rules[i] = NULL;
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}
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}
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OBJ_CLASS_INSTANCE(mca_coll_tuned_module_t, mca_coll_base_module_t,
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mca_coll_tuned_module_construct, NULL);
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