153 строки
5.6 KiB
C
153 строки
5.6 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University.
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* All rights reserved.
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* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
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* All rights 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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* 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 "coll_tuned.h"
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#include "mpi.h"
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#include "mca/coll/coll.h"
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#include "coll_tuned.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 *mca_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 mca_coll_tuned_stream = -1;
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int mca_coll_tuned_priority = 30;
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int mca_coll_tuned_preallocate_memory_comm_size_limit = (32*1024);
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int mca_coll_tuned_use_dynamic_rules = 0;
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int mca_coll_tuned_init_tree_fanout = 4;
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int mca_coll_tuned_init_chain_fanout = 4;
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/* forced alogrithm variables */
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int mca_coll_tuned_alltoall_forced_choice = 0;
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int mca_coll_tuned_alltoall_forced_segsize = 0;
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/*
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* Local function
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*/
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static int tuned_open(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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const mca_coll_base_component_1_0_0_t mca_coll_tuned_component = {
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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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{
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/* Indicate that we are a coll v1.0.0 component (which also implies a
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specific MCA version) */
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MCA_COLL_BASE_VERSION_1_0_0,
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/* Component name and version */
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"tuned",
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OMPI_MAJOR_VERSION,
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OMPI_MINOR_VERSION,
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OMPI_RELEASE_VERSION,
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/* Component open and close functions */
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tuned_open,
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NULL
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},
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/* Next the MCA v1.0.0 component meta data */
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{
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/* Whether the component is checkpointable or not */
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true
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},
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/* Initialization / querying functions */
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mca_coll_tuned_init_query,
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mca_coll_tuned_comm_query,
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NULL
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};
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static int tuned_open(void)
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{
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int param;
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/* mca_coll_tuned_component_t *ct = &mca_coll_tuned_component; */
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/* Use a low priority, but allow other components to be lower */
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mca_base_param_reg_int(&mca_coll_tuned_component.collm_version,
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"priority",
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"Priority of the tuned coll component",
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false, false, mca_coll_tuned_priority,
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&mca_coll_tuned_priority);
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/* parameter for pre-allocated memory requests etc */
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mca_base_param_reg_int(&mca_coll_tuned_component.collm_version,
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"pre_allocate_memory_comm_size_limit",
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"Size of communicator were we stop pre-allocating memory for the fixed internal buffer used for message requests etc that is hung off the communicator data segment. I.e. if you have a 100'000 nodes you might not want to pre-allocate 200'000 request handle slots per communicator instance!",
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false, false, mca_coll_tuned_preallocate_memory_comm_size_limit,
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&mca_coll_tuned_preallocate_memory_comm_size_limit);
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/* by default DISABLE dynamic rules and instead use fixed [if based] rules */
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mca_base_param_reg_int(&mca_coll_tuned_component.collm_version,
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"use_dynamic_rules",
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"Switch used to decide if we use static (if statements) or dynamic (built at runtime) decision function rules",
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false, false, mca_coll_tuned_use_dynamic_rules,
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&mca_coll_tuned_use_dynamic_rules);
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/* some initial guesses at topology parameters */
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mca_base_param_reg_int(&mca_coll_tuned_component.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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false, false, mca_coll_tuned_init_tree_fanout,
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&mca_coll_tuned_init_tree_fanout);
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mca_base_param_reg_int(&mca_coll_tuned_component.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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false, false, mca_coll_tuned_init_chain_fanout,
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&mca_coll_tuned_init_chain_fanout);
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param = mca_base_param_find("coll", NULL, "base_verbose");
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if (param >= 0) {
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int verbose;
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mca_base_param_lookup_int(param, &verbose);
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if (verbose > 0) {
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mca_coll_tuned_stream = opal_output_open(NULL);
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}
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}
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OPAL_OUTPUT((mca_coll_tuned_stream, "coll:tuned:component_open: done!"));
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return OMPI_SUCCESS;
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}
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