16b49dc5b3
Among many other things: - Fix an imbalance bug in MPI_allgather - Accept more human readable configuration files. We can now specify the collective by name instead of a magic number, and the component we want to use also by name. - Add the capability to have optional arguments in the collective communication configuration file. Right now the capability exists for segment lengths, but is yet to be connected with the algorithms. - Redo the initialization of all HAN collectives. Cleanup the fallback collective support. - In case the module is unable to deliver the expected result, it will fallback executing the collective operation on another collective component. This change make the support for this fallback simpler to use. - Implement a fallback allowing a HAN module to remove itself as potential active collective module, and instead fallback to the next module in line. - Completely disable the HAN modules on error. From the moment an error is encountered they remove themselves from the communicator, and in case some other modules calls them simply behave as a pass-through. Communicator: provide ompi_comm_split_with_info to split and provide info at the same time Add ompi_comm_coll_preference info key to control collective component selection COLL HAN: use info keys instead of component-level variable to communicate topology level between abstraction layers - The info value is a comma-separated list of entries, which are chosen with decreasing priorities. This overrides the priority of the component, unless the component has disqualified itself. An entry prefixed with ^ starts the ignore-list. Any entry following this character will be ingnored during the collective component selection for the communicator. Example: "sm,libnbc,^han,adapt" gives sm the highest preference, followed by libnbc. The components han and adapt are ignored in the selection process. - Allocate a temporary buffer for all lower-level leaders (length 2 segments) - Fix the handling of MPI_IN_PLACE for gather and scatter. COLL HAN: Fix topology handling - HAN should not rely on node names to determine the ordering of ranks. Instead, use the node leaders as identifiers and short-cut if the node-leaders agree that ranks are consecutive. Also, error out if the rank distribution is imbalanced for now. Signed-off-by: Xi Luo <xluo12@vols.utk.edu> Signed-off-by: Joseph Schuchart <schuchart@icl.utk.edu> Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
393 строки
17 KiB
C
393 строки
17 KiB
C
/*
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* Copyright (c) 2018-2020 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) 2020 Bull S.A.S. 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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/**
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* @file
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*
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* Most of the description of the data layout is in the
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* coll_han_module.c file.
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*/
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#include "ompi_config.h"
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#include "opal/util/show_help.h"
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#include "ompi/constants.h"
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#include "ompi/mca/coll/coll.h"
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#include "coll_han.h"
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#include "coll_han_dynamic.h"
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#include "coll_han_dynamic_file.h"
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#include "ompi/mca/coll/base/coll_base_util.h"
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/*
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* Public string showing the coll ompi_han component version number
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*/
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const char *mca_coll_han_component_version_string =
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"Open MPI HAN collective MCA component version " OMPI_VERSION;
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ompi_coll_han_components available_components[COMPONENTS_COUNT] = {
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{ SELF, "self", NULL },
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{ BASIC, "basic", NULL },
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{ LIBNBC, "libnbc", NULL },
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{ TUNED, "tuned", NULL },
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{ SM, "sm", NULL },
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{ SHARED, "shared", NULL },
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{ ADAPT, "adapt", NULL },
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{ HAN, "han", NULL }
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};
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/*
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* Local functions
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*/
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static int han_open(void);
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static int han_close(void);
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static int han_register(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_han_component_t mca_coll_han_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
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information 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 = "han",
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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 functions */
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.mca_open_component = han_open,
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.mca_close_component = han_close,
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.mca_register_component_params = han_register,
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},
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.collm_data = {
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/* The component is not checkpoint ready */
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MCA_BASE_METADATA_PARAM_NONE},
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/* Initialization / querying functions */
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.collm_init_query = mca_coll_han_init_query,
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.collm_comm_query = mca_coll_han_comm_query,
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},
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/* han-component specifc information */
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/* (default) priority */
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20,
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};
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/*
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* Init the component
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*/
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static int han_open(void)
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{
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/* Get the global coll verbosity: it will be ours */
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mca_coll_han_component.han_output = ompi_coll_base_framework.framework_output;
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return mca_coll_han_init_dynamic_rules();
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}
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/*
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* Shut down the component
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*/
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static int han_close(void)
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{
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mca_coll_han_free_dynamic_rules();
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return OMPI_SUCCESS;
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}
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static bool is_simple_implemented(COLLTYPE_T coll)
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{
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switch(coll) {
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case ALLGATHER:
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case ALLREDUCE:
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case BCAST:
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case GATHER:
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case REDUCE:
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return true;
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default:
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return false;
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}
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}
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const char* mca_coll_han_topo_lvl_to_str(TOPO_LVL_T topo_lvl)
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{
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switch(topo_lvl) {
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case INTRA_NODE:
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return "intra_node";
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case INTER_NODE:
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return "inter_node";
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case GLOBAL_COMMUNICATOR:
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return "global_communicator";
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case NB_TOPO_LVL:
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default:
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return "invalid topologic level";
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}
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}
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/*
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* Register MCA params
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*/
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static int han_register(void)
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{
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mca_base_component_t *c = &mca_coll_han_component.super.collm_version;
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mca_coll_han_component_t *cs = &mca_coll_han_component;
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/* Generated parameters name and description */
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char param_name[128], param_desc[256];
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int param_desc_size;
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COLLTYPE_T coll;
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TOPO_LVL_T topo_lvl;
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COMPONENT_T component;
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cs->han_priority = 0;
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(void) mca_base_component_var_register(c, "priority", "Priority of the HAN coll component",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY, &cs->han_priority);
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cs->han_bcast_segsize = 65536;
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(void) mca_base_component_var_register(c, "bcast_segsize",
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"segment size for bcast",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY, &cs->han_bcast_segsize);
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cs->han_bcast_up_module = 0;
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(void) mca_base_component_var_register(c, "bcast_up_module",
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"up level module for bcast, 0 libnbc, 1 adapt",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY, &cs->han_bcast_up_module);
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cs->han_bcast_low_module = 0;
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(void) mca_base_component_var_register(c, "bcast_low_module",
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"low level module for bcast, 0 sm, 1 solo",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY, &cs->han_bcast_low_module);
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cs->han_reduce_segsize = 524288;
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(void) mca_base_component_var_register(c, "reduce_segsize",
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"segment size for reduce",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY, &cs->han_reduce_segsize);
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cs->han_reduce_up_module = 0;
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(void) mca_base_component_var_register(c, "reduce_up_module",
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"up level module for allreduce, 0 libnbc, 1 adapt",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY, &cs->han_reduce_up_module);
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cs->han_reduce_low_module = 0;
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(void) mca_base_component_var_register(c, "reduce_low_module",
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"low level module for allreduce, 0 sm, 1 shared",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY, &cs->han_reduce_low_module);
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cs->han_allreduce_segsize = 524288;
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(void) mca_base_component_var_register(c, "allreduce_segsize",
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"segment size for allreduce",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY, &cs->han_allreduce_segsize);
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cs->han_allreduce_up_module = 0;
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(void) mca_base_component_var_register(c, "allreduce_up_module",
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"up level module for allreduce, 0 libnbc, 1 adapt",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY, &cs->han_allreduce_up_module);
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cs->han_allreduce_low_module = 0;
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(void) mca_base_component_var_register(c, "allreduce_low_module",
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"low level module for allreduce, 0 sm, 1 shared",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY, &cs->han_allreduce_low_module);
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cs->han_allgather_up_module = 0;
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(void) mca_base_component_var_register(c, "allgather_up_module",
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"up level module for allgather, 0 libnbc, 1 adapt",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY, &cs->han_allgather_up_module);
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cs->han_allgather_low_module = 0;
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(void) mca_base_component_var_register(c, "allgather_low_module",
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"low level module for allgather, 0 sm, 1 shared",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY, &cs->han_allgather_low_module);
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cs->han_gather_up_module = 0;
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(void) mca_base_component_var_register(c, "gather_up_module",
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"up level module for gather, 0 libnbc, 1 adapt",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY, &cs->han_gather_up_module);
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cs->han_gather_low_module = 0;
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(void) mca_base_component_var_register(c, "gather_low_module",
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"low level module for gather, 0 sm, 1 shared",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY, &cs->han_gather_low_module);
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cs->han_scatter_up_module = 0;
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(void) mca_base_component_var_register(c, "scatter_up_module",
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"up level module for scatter, 0 libnbc, 1 adapt",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY, &cs->han_scatter_up_module);
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cs->han_scatter_low_module = 0;
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(void) mca_base_component_var_register(c, "scatter_low_module",
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"low level module for scatter, 0 sm, 1 shared",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY, &cs->han_scatter_low_module);
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cs->han_reproducible = 0;
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(void) mca_base_component_var_register(c, "reproducible",
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"whether we need reproducible results "
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"(enabling this disables optimisations using topology)"
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"0 disable 1 enable, default 0",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_3,
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MCA_BASE_VAR_SCOPE_READONLY, &cs->han_reproducible);
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/* Simple algorithms MCA parameters */
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for(coll = 0 ; coll < COLLCOUNT ; coll++) {
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cs->use_simple_algorithm[coll] = false;
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if(is_simple_implemented(coll)) {
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snprintf(param_name, sizeof(param_name), "use_simple_%s",
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mca_coll_base_colltype_to_str(coll));
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snprintf(param_desc, sizeof(param_desc), "whether to enable simple algo for %s",
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mca_coll_base_colltype_to_str(coll));
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mca_base_component_var_register(c, param_name,
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param_desc,
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MCA_BASE_VAR_TYPE_BOOL, NULL, 0, 0,
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OPAL_INFO_LVL_5,
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MCA_BASE_VAR_SCOPE_READONLY,
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&(cs->use_simple_algorithm[coll]));
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}
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}
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/* Dynamic rules MCA parameters */
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memset(cs->mca_rules, 0,
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COLLCOUNT * (GLOBAL_COMMUNICATOR+1) * sizeof(COMPONENT_T));
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for(coll = 0; coll < COLLCOUNT; coll++) {
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if(!mca_coll_han_is_coll_dynamic_implemented(coll)) {
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continue;
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}
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/*
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* Default values
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*/
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cs->mca_rules[coll][INTRA_NODE] = TUNED;
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cs->mca_rules[coll][INTER_NODE] = BASIC;
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cs->mca_rules[coll][GLOBAL_COMMUNICATOR] = HAN;
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for(topo_lvl = 0; topo_lvl < NB_TOPO_LVL; topo_lvl++) {
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snprintf(param_name, sizeof(param_name), "%s_dynamic_%s_module",
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mca_coll_base_colltype_to_str(coll),
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mca_coll_han_topo_lvl_to_str(topo_lvl));
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param_desc_size = snprintf(param_desc, sizeof(param_desc),
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"Collective module to use for %s on %s topological level: ",
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mca_coll_base_colltype_to_str(coll),
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mca_coll_han_topo_lvl_to_str(topo_lvl));
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/*
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* Exhaustive description:
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* 0 = self; 1 = basic; 2 = libnbc; ...
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* FIXME: Do not print component not providing this collective
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*/
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for(component = 0 ; component < COMPONENTS_COUNT ; component++) {
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if(HAN == component && GLOBAL_COMMUNICATOR != topo_lvl) {
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/* Han can only be used on the global communicator */
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continue;
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}
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param_desc_size += snprintf(param_desc+param_desc_size, sizeof(param_desc) - param_desc_size,
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"%d = %s; ",
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component,
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available_components[component].component_name);
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}
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mca_base_component_var_register(c, param_name, param_desc,
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY,
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&(cs->mca_rules[coll][topo_lvl]));
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}
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}
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/* Dynamic rules */
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cs->use_dynamic_file_rules = false;
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(void) mca_base_component_var_register(&mca_coll_han_component.super.collm_version,
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"use_dynamic_file_rules",
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"Enable the dynamic selection provided via the dynamic_rules_filename MCA",
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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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&(cs->use_dynamic_file_rules));
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cs->dynamic_rules_filename = NULL;
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(void) mca_base_component_var_register(&mca_coll_han_component.super.collm_version,
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"dynamic_rules_filename",
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"Configuration file containing the dynamic selection 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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&(cs->dynamic_rules_filename));
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cs->dump_dynamic_rules = false;
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(void) mca_base_component_var_register(&mca_coll_han_component.super.collm_version,
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"dump_dynamic_rules",
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"Switch used to decide if we dump dynamic rules provided by configuration file",
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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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&(cs->dump_dynamic_rules));
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if((cs->dump_dynamic_rules || NULL != cs->dynamic_rules_filename)
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&& !cs->use_dynamic_file_rules) {
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opal_output_verbose(0, cs->han_output,
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"HAN: dynamic rules for collectives are hot activated."
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"Check coll_han_use_dynamic_file_rules MCA parameter");
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}
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cs->max_dynamic_errors = 10;
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(void) mca_base_component_var_register(&mca_coll_han_component.super.collm_version,
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"max_dynamic_errors",
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"Number of dynamic rules module/function "
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"errors printed on rank 0 "
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"with a 0 verbosity."
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"Useless if coll_base_verbose is 30 or more.",
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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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&(cs->max_dynamic_errors));
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return OMPI_SUCCESS;
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}
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