/* * Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana * University Research and Technology * Corporation. All rights reserved. * Copyright (c) 2004-2006 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) 2008 Sun Microsystems, Inc. All rights reserved. * Copyright (c) 2008 Cisco Systems, Inc. All rights reserved. * $COPYRIGHT$ * * Additional copyrights may follow * * $HEADER$ * * These symbols are in a file by themselves to provide nice linker * semantics. Since linkers generally pull in symbols by object * files, keeping these symbols as the only symbols in this file * prevents utility programs such as "ompi_info" from having to import * entire components just to query their version and parameters. */ #include "ompi_config.h" #include "coll_tuned.h" #include "mpi.h" #include "ompi/mca/coll/coll.h" #include "coll_tuned.h" #include "orte/util/show_help.h" #include "orte/util/show_help.h" /* * Public string showing the coll ompi_tuned component version number */ const char *ompi_coll_tuned_component_version_string = "Open MPI tuned collective MCA component version " OMPI_VERSION; /* * Global variable */ int ompi_coll_tuned_stream = -1; int ompi_coll_tuned_priority = 30; int ompi_coll_tuned_preallocate_memory_comm_size_limit = (32 * 1024); int ompi_coll_tuned_use_dynamic_rules = 0; char* ompi_coll_tuned_dynamic_rules_filename = (char*) NULL; int ompi_coll_tuned_init_tree_fanout = 4; int ompi_coll_tuned_init_chain_fanout = 4; int ompi_coll_tuned_init_max_requests = 128; /* forced alogrithm variables */ /* indices for the MCA parameters */ coll_tuned_force_algorithm_mca_param_indices_t ompi_coll_tuned_forced_params[COLLCOUNT]; /* max algorithm values */ int ompi_coll_tuned_forced_max_algorithms[COLLCOUNT]; /* * Local function */ static int tuned_open(void); static int tuned_close(void); /* * Instantiate the public struct with all of our public information * and pointers to our public functions in it */ mca_coll_tuned_component_t mca_coll_tuned_component = { /* First, fill in the super */ { /* First, the mca_component_t struct containing meta information about the component itself */ { MCA_COLL_BASE_VERSION_2_0_0, /* Component name and version */ "tuned", OMPI_MAJOR_VERSION, OMPI_MINOR_VERSION, OMPI_RELEASE_VERSION, /* Component open and close functions */ tuned_open, tuned_close }, { /* The component is checkpoint ready */ MCA_BASE_METADATA_PARAM_CHECKPOINT }, /* Initialization / querying functions */ ompi_coll_tuned_init_query, ompi_coll_tuned_comm_query, }, /* priority of the module */ 0, /* Tuned component specific information */ /* Note some of this WAS in the module */ NULL /* ompi_coll_alg_rule_t ptr */ }; static int tuned_open(void) { #if OMPI_ENABLE_DEBUG { int param; param = mca_base_param_find("coll", NULL, "base_verbose"); if (param >= 0) { int verbose; mca_base_param_lookup_int(param, &verbose); if (verbose > 0) { ompi_coll_tuned_stream = opal_output_open(NULL); } } } #endif /* OMPI_ENABLE_DEBUG */ /* Use a low priority, but allow other components to be lower */ mca_base_param_reg_int(&mca_coll_tuned_component.super.collm_version, "priority", "Priority of the tuned coll component", false, false, ompi_coll_tuned_priority, &ompi_coll_tuned_priority); /* parameter for pre-allocated memory requests etc */ mca_base_param_reg_int(&mca_coll_tuned_component.super.collm_version, "pre_allocate_memory_comm_size_limit", "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!", false, false, ompi_coll_tuned_preallocate_memory_comm_size_limit, &ompi_coll_tuned_preallocate_memory_comm_size_limit); /* some initial guesses at topology parameters */ mca_base_param_reg_int(&mca_coll_tuned_component.super.collm_version, "init_tree_fanout", "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", false, false, ompi_coll_tuned_init_tree_fanout, &ompi_coll_tuned_init_tree_fanout); mca_base_param_reg_int(&mca_coll_tuned_component.super.collm_version, "init_chain_fanout", "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", false, false, ompi_coll_tuned_init_chain_fanout, &ompi_coll_tuned_init_chain_fanout); /* now check that the user hasn't overrode any of the decision functions if dynamic rules are enabled */ /* the user can redo this before every comm dup/create if they like */ /* this is useful for benchmarking and user knows best tuning */ /* as this is the component we only lookup the indicies of the mca params */ /* the actual values are looked up during comm create via module init */ /* intra functions first */ /* if dynamic rules allowed then look up dynamic rules config filename, else we leave it an empty filename (NULL) */ /* by default DISABLE dynamic rules and instead use fixed [if based] rules */ mca_base_param_reg_int(&mca_coll_tuned_component.super.collm_version, "use_dynamic_rules", "Switch used to decide if we use static (compiled/if statements) or dynamic (built at runtime) decision function rules", false, false, ompi_coll_tuned_use_dynamic_rules, &ompi_coll_tuned_use_dynamic_rules); if (ompi_coll_tuned_use_dynamic_rules) { mca_base_param_reg_string(&mca_coll_tuned_component.super.collm_version, "dynamic_rules_filename", "Filename of configuration file that contains the dynamic (@runtime) decision function rules", false, false, ompi_coll_tuned_dynamic_rules_filename, &ompi_coll_tuned_dynamic_rules_filename); ompi_coll_tuned_allreduce_intra_check_forced_init(&ompi_coll_tuned_forced_params[ALLREDUCE]); ompi_coll_tuned_alltoall_intra_check_forced_init(&ompi_coll_tuned_forced_params[ALLTOALL]); ompi_coll_tuned_allgather_intra_check_forced_init(&ompi_coll_tuned_forced_params[ALLGATHER]); ompi_coll_tuned_allgatherv_intra_check_forced_init(&ompi_coll_tuned_forced_params[ALLGATHERV]); ompi_coll_tuned_alltoallv_intra_check_forced_init(&ompi_coll_tuned_forced_params[ALLTOALLV]); ompi_coll_tuned_barrier_intra_check_forced_init(&ompi_coll_tuned_forced_params[BARRIER]); ompi_coll_tuned_bcast_intra_check_forced_init(&ompi_coll_tuned_forced_params[BCAST]); ompi_coll_tuned_reduce_intra_check_forced_init(&ompi_coll_tuned_forced_params[REDUCE]); ompi_coll_tuned_reduce_scatter_intra_check_forced_init(&ompi_coll_tuned_forced_params[REDUCESCATTER]); ompi_coll_tuned_gather_intra_check_forced_init(&ompi_coll_tuned_forced_params[GATHER]); ompi_coll_tuned_scatter_intra_check_forced_init(&ompi_coll_tuned_forced_params[SCATTER]); } OPAL_OUTPUT((ompi_coll_tuned_stream, "coll:tuned:component_open: done!")); return OMPI_SUCCESS; } /* here we should clean up state stored on the component */ /* i.e. alg table and dynamic changable rules if allocated etc */ static int tuned_close(void) { OPAL_OUTPUT((ompi_coll_tuned_stream, "coll:tuned:component_close: called")); /* dealloc alg table if allocated */ /* dealloc dynamic changable rules if allocated */ OPAL_OUTPUT((ompi_coll_tuned_stream, "coll:tuned:component_close: done!")); return OMPI_SUCCESS; } static void mca_coll_tuned_module_construct(mca_coll_tuned_module_t *module) { module->tuned_data = NULL; } static void mca_coll_tuned_module_destruct(mca_coll_tuned_module_t *module) { mca_coll_tuned_comm_t *data; /* Free the space in the data mpool and the data hanging off the communicator */ data = module->tuned_data; if (NULL != data) { #if OMPI_ENABLE_DEBUG /* Reset the reqs to NULL/0 -- they'll be freed as part of freeing the generel c_coll_selected_data */ data->mcct_reqs = NULL; data->mcct_num_reqs = 0; #endif /* free any cached information that has been allocated */ if (data->cached_ntree) { /* destroy general tree if defined */ ompi_coll_tuned_topo_destroy_tree (&data->cached_ntree); } if (data->cached_bintree) { /* destroy bintree if defined */ ompi_coll_tuned_topo_destroy_tree (&data->cached_bintree); } if (data->cached_bmtree) { /* destroy bmtree if defined */ ompi_coll_tuned_topo_destroy_tree (&data->cached_bmtree); } if (data->cached_in_order_bmtree) { /* destroy bmtree if defined */ ompi_coll_tuned_topo_destroy_tree (&data->cached_in_order_bmtree); } if (data->cached_chain) { /* destroy general chain if defined */ ompi_coll_tuned_topo_destroy_tree (&data->cached_chain); } if (data->cached_pipeline) { /* destroy pipeline if defined */ ompi_coll_tuned_topo_destroy_tree (&data->cached_pipeline); } if (data->cached_in_order_bintree) { /* destroy in order bintree if defined */ ompi_coll_tuned_topo_destroy_tree (&data->cached_in_order_bintree); } #if 0 /* FIXME: */ /* if any algorithm rules are cached on the communicator, only free them if its MCW */ /* as this is the only place they are allocated by reading the decision configure file */ if ((ompi_coll_tuned_use_dynamic_rules)&&(&ompi_mpi_comm_world==comm)) { if (comm->data->all_base_rules) { ompi_coll_tuned_free_all_rules (comm->data->all_base_rules, COLLCOUNT); } } #endif free(data); } } OBJ_CLASS_INSTANCE(mca_coll_tuned_module_t, mca_coll_base_module_t, mca_coll_tuned_module_construct, mca_coll_tuned_module_destruct);