cf377db823
Features: - Support for an override parameter file (openmpi-mca-param-override.conf). Variable values in this file can not be overridden by any file or environment value. - Support for boolean, unsigned, and unsigned long long variables. - Support for true/false values. - Support for enumerations on integer variables. - Support for MPIT scope, verbosity, and binding. - Support for command line source. - Support for setting variable source via the environment using OMPI_MCA_SOURCE_<var name>=source (either command or file:filename) - Cleaner API. - Support for variable groups (equivalent to MPIT categories). Notes: - Variables must be created with a backing store (char **, int *, or bool *) that must live at least as long as the variable. - Creating a variable with the MCA_BASE_VAR_FLAG_SETTABLE enables the use of mca_base_var_set_value() to change the value. - String values are duplicated when the variable is registered. It is up to the caller to free the original value if necessary. The new value will be freed by the mca_base_var system and must not be freed by the user. - Variables with constant scope may not be settable. - Variable groups (and all associated variables) are deregistered when the component is closed or the component repository item is freed. This prevents a segmentation fault from accessing a variable after its component is unloaded. - After some discussion we decided we should remove the automatic registration of component priority variables. Few component actually made use of this feature. - The enumerator interface was updated to be general enough to handle future uses of the interface. - The code to generate ompi_info output has been moved into the MCA variable system. See mca_base_var_dump(). opal: update core and components to mca_base_var system orte: update core and components to mca_base_var system ompi: update core and components to mca_base_var system This commit also modifies the rmaps framework. The following variables were moved from ppr and lama: rmaps_base_pernode, rmaps_base_n_pernode, rmaps_base_n_persocket. Both lama and ppr create synonyms for these variables. This commit was SVN r28236.
259 строки
9.9 KiB
C
259 строки
9.9 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) 2004-2005 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) 2008-2009 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2011 Los Alamos National Security, LLC.
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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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/**
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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_sm_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_sm.h"
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/*
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* Public string showing the coll ompi_sm component version number
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*/
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const char *mca_coll_sm_component_version_string =
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"Open MPI sm collective MCA component version " OMPI_VERSION;
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/*
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* Local functions
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*/
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static int sm_close(void);
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static int sm_register(void);
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static int coll_sm_shared_mem_used_data;
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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_sm_component_t mca_coll_sm_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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{
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MCA_COLL_BASE_VERSION_2_0_0,
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/* Component name and version */
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"sm",
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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 functions */
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NULL, /* open */
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sm_close,
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NULL, /* query */
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sm_register
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},
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{
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/* The component is not checkpoint ready */
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MCA_BASE_METADATA_PARAM_NONE
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},
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/* Initialization / querying functions */
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mca_coll_sm_init_query,
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mca_coll_sm_comm_query,
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},
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/* sm-component specifc information */
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/* (default) priority */
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/* JMS temporarily lowered until we can get more testing */
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0,
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/* (default) control size (bytes) */
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4096,
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/* (default) number of "in use" flags for each communicator's area
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in the per-communicator shmem segment */
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2,
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/* (default) number of segments for each communicator in the
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per-communicator shmem segment */
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8,
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/* (default) fragment size */
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8192,
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/* (default) degree of tree for tree-based operations (must be <=
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control unit size) */
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4,
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/* (default) number of processes in coll_sm_shared_mem_size
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information variable */
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4,
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/* default values for non-MCA parameters */
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/* Not specifying values here gives us all 0's */
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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 sm_close(void)
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{
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return OMPI_SUCCESS;
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}
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static int sm_verify_mca_variables(void)
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{
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mca_coll_sm_component_t *cs = &mca_coll_sm_component;
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if (0 != (cs->sm_fragment_size % cs->sm_control_size)) {
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cs->sm_fragment_size += cs->sm_control_size -
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(cs->sm_fragment_size % cs->sm_control_size);
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}
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if (cs->sm_comm_num_in_use_flags < 2) {
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cs->sm_comm_num_in_use_flags = 2;
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}
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if (cs->sm_comm_num_segments < cs->sm_comm_num_in_use_flags) {
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cs->sm_comm_num_segments = cs->sm_comm_num_in_use_flags;
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}
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if (0 != (cs->sm_comm_num_segments % cs->sm_comm_num_in_use_flags)) {
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cs->sm_comm_num_segments += cs->sm_comm_num_in_use_flags -
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(cs->sm_comm_num_segments % cs->sm_comm_num_in_use_flags);
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}
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cs->sm_segs_per_inuse_flag =
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cs->sm_comm_num_segments / cs->sm_comm_num_in_use_flags;
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if (cs->sm_tree_degree > cs->sm_control_size) {
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opal_show_help("help-mpi-coll-sm.txt",
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"tree-degree-larger-than-control", true,
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cs->sm_tree_degree, cs->sm_control_size);
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cs->sm_tree_degree = cs->sm_control_size;
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}
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if (cs->sm_tree_degree > 255) {
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opal_show_help("help-mpi-coll-sm.txt",
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"tree-degree-larger-than-255", true,
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cs->sm_tree_degree);
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cs->sm_tree_degree = 255;
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}
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coll_sm_shared_mem_used_data = (int)(4 * cs->sm_control_size +
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(cs->sm_comm_num_in_use_flags * cs->sm_control_size) +
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(cs->sm_comm_num_segments * (cs->sm_info_comm_size * cs->sm_control_size * 2)) +
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(cs->sm_comm_num_segments * (cs->sm_info_comm_size * cs->sm_fragment_size)));
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return OMPI_SUCCESS;
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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 sm_register(void)
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{
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mca_base_component_t *c = &mca_coll_sm_component.super.collm_version;
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mca_coll_sm_component_t *cs = &mca_coll_sm_component;
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/* If we want to be selected (i.e., all procs on one node), then
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we should have a high priority */
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cs->sm_priority = 0;
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(void) mca_base_component_var_register(c, "priority", "Priority of the sm 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,
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&cs->sm_priority);
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cs->sm_control_size = 4096;
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(void) mca_base_component_var_register(c, "control_size",
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"Length of the control data -- should usually be either the length of a cache line on most SMPs, or the size of a page on machines that support direct memory affinity page placement (in bytes)",
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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->sm_control_size);
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cs->sm_fragment_size = 8192;
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(void) mca_base_component_var_register(c, "fragment_size",
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"Fragment size (in bytes) used for passing data through shared memory (will be rounded up to the nearest control_size size)",
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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->sm_fragment_size);
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cs->sm_comm_num_in_use_flags = 2;
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(void) mca_base_component_var_register(c, "comm_in_use_flags",
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"Number of \"in use\" flags, used to mark a message passing area segment as currently being used or not (must be >= 2 and <= comm_num_segments)",
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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->sm_comm_num_in_use_flags);
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cs->sm_comm_num_segments = 8;
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(void) mca_base_component_var_register(c, "comm_num_segments",
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"Number of segments in each communicator's shared memory message passing area (must be >= 2, and must be a multiple of comm_in_use_flags)",
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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->sm_comm_num_segments);
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cs->sm_tree_degree = 4;
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(void) mca_base_component_var_register(c, "tree_degree",
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"Degree of the tree for tree-based operations (must be => 1 and <= min(control_size, 255))",
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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->sm_tree_degree);
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/* INFO: Calculate how much space we need in the per-communicator
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shmem data segment. This formula taken directly from
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coll_sm_module.c. */
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cs->sm_info_comm_size = 4;
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(void) mca_base_component_var_register(c, "info_num_procs",
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"Number of processes to use for the calculation of the shared_mem_size MCA information parameter (must be => 2)",
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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->sm_info_comm_size);
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coll_sm_shared_mem_used_data = (int)(4 * cs->sm_control_size +
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(cs->sm_comm_num_in_use_flags * cs->sm_control_size) +
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(cs->sm_comm_num_segments * (cs->sm_info_comm_size * cs->sm_control_size * 2)) +
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(cs->sm_comm_num_segments * (cs->sm_info_comm_size * cs->sm_fragment_size)));
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(void) mca_base_component_var_register(c, "shared_mem_used_data",
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"Amount of shared memory used, per communicator, in the shared memory data area for info_num_procs processes (in bytes)",
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MCA_BASE_VAR_TYPE_INT, NULL, 0,
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MCA_BASE_VAR_FLAG_DEFAULT_ONLY,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY,
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&coll_sm_shared_mem_used_data);
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return sm_verify_mca_variables();
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}
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