01671f2991
default * Add ability to start Put and Get requests immediately instead of queuing until synchronizaion when using Fence. Not entirely sure this is completely safe, so it must be explicitly enabled by the user, either with an MCA parameter or info argument to Win_create. This commit was SVN r9418.
621 строка
21 KiB
C
621 строка
21 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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#include "ompi_config.h"
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#include <string.h>
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#include "osc_pt2pt.h"
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#include "osc_pt2pt_sendreq.h"
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#include "osc_pt2pt_replyreq.h"
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#include "osc_pt2pt_header.h"
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#include "osc_pt2pt_obj_convert.h"
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#include "osc_pt2pt_data_move.h"
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#include "opal/threads/mutex.h"
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#include "ompi/info/info.h"
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#include "ompi/communicator/communicator.h"
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#include "ompi/mca/osc/osc.h"
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#include "ompi/mca/btl/btl.h"
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#include "ompi/mca/bml/bml.h"
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#include "ompi/mca/bml/base/base.h"
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#include "ompi/datatype/dt_arch.h"
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static int ompi_osc_pt2pt_component_open(void);
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ompi_osc_pt2pt_component_t mca_osc_pt2pt_component = {
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{ /* ompi_osc_base_component_t */
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{ /* ompi_base_component_t */
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OMPI_OSC_BASE_VERSION_1_0_0,
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"pt2pt",
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1,
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0,
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0,
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ompi_osc_pt2pt_component_open,
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NULL
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},
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{ /* mca_base_component_data */
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false /* checkpointable? */
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},
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ompi_osc_pt2pt_component_init,
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ompi_osc_pt2pt_component_query,
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ompi_osc_pt2pt_component_select,
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ompi_osc_pt2pt_component_finalize
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}
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};
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ompi_osc_pt2pt_module_t ompi_osc_pt2pt_module_template = {
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{
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ompi_osc_pt2pt_module_free,
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ompi_osc_pt2pt_module_put,
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ompi_osc_pt2pt_module_get,
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ompi_osc_pt2pt_module_accumulate,
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ompi_osc_pt2pt_module_fence,
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ompi_osc_pt2pt_module_start,
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ompi_osc_pt2pt_module_complete,
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ompi_osc_pt2pt_module_post,
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ompi_osc_pt2pt_module_wait,
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ompi_osc_pt2pt_module_test,
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ompi_osc_pt2pt_module_lock,
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ompi_osc_pt2pt_module_unlock,
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}
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};
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void ompi_osc_pt2pt_component_fragment_cb(struct mca_btl_base_module_t *btl,
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mca_btl_base_tag_t tag,
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mca_btl_base_descriptor_t *descriptor,
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void *cbdata);
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/* look up parameters for configuring this window. The code first
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looks in the info structure passed by the user, then through mca
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parameters. */
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static bool
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check_config_value_bool(char *key, ompi_info_t *info)
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{
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char *value_string;
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int value_len, ret, flag, param;
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bool result;
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ret = ompi_info_get_valuelen(info, key, &value_len, &flag);
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if (OMPI_SUCCESS != ret) goto info_not_found;
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if (flag == 0) goto info_not_found;
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value_len++;
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value_string = malloc(sizeof(char) * value_len);
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if (NULL == value_string) goto info_not_found;
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ret = ompi_info_get(info, key, value_len, value_string, &flag);
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if (OMPI_SUCCESS != ret) {
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free(value_string);
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goto info_not_found;
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}
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assert(flag != 0);
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ret = ompi_info_value_to_bool(value_string, &result);
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free(value_string);
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if (OMPI_SUCCESS != ret) goto info_not_found;
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return result;
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info_not_found:
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param = mca_base_param_find("osc", "pt2pt", key);
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if (param == OPAL_ERROR) return false;
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ret = mca_base_param_lookup_int(param, &flag);
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if (OMPI_SUCCESS != ret) return false;
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result = flag;
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return result;
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}
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static int fence_sync_index;
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static int
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ompi_osc_pt2pt_component_open(void)
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{
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fence_sync_index =
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mca_base_param_reg_string(&mca_osc_pt2pt_component.super.osc_version,
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"fence_sync_method",
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"How to synchronize fence: reduce_scatter, allreduce, alltoall",
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false, false, "reduce_scatter", NULL);
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mca_base_param_reg_int(&mca_osc_pt2pt_component.super.osc_version,
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"eager_send",
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"Attempt to start data movement during communication call, "
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"instead of at synchrnoization time. "
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"Info key of same name overrides this value, "
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"if info key given.",
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false, false, 0, NULL);
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mca_base_param_reg_int(&mca_osc_pt2pt_component.super.osc_version,
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"no_locks",
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"Enable optimizations available only if MPI_LOCK is not used.",
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false, false, 0, NULL);
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return OMPI_SUCCESS;
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}
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int
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ompi_osc_pt2pt_component_init(bool enable_progress_threads,
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bool enable_mpi_threads)
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{
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int ret;
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/* we can run with either threads or not threads (may not be able
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to do win locks)... */
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mca_osc_pt2pt_component.p2p_c_have_progress_threads =
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enable_progress_threads;
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OBJ_CONSTRUCT(&mca_osc_pt2pt_component.p2p_c_lock, opal_mutex_t);
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OBJ_CONSTRUCT(&mca_osc_pt2pt_component.p2p_c_modules,
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opal_hash_table_t);
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opal_hash_table_init(&mca_osc_pt2pt_component.p2p_c_modules, 2);
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OBJ_CONSTRUCT(&mca_osc_pt2pt_component.p2p_c_sendreqs, opal_free_list_t);
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opal_free_list_init(&mca_osc_pt2pt_component.p2p_c_sendreqs,
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sizeof(ompi_osc_pt2pt_sendreq_t),
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OBJ_CLASS(ompi_osc_pt2pt_sendreq_t),
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1, -1, 1);
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OBJ_CONSTRUCT(&mca_osc_pt2pt_component.p2p_c_replyreqs, opal_free_list_t);
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opal_free_list_init(&mca_osc_pt2pt_component.p2p_c_replyreqs,
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sizeof(ompi_osc_pt2pt_replyreq_t),
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OBJ_CLASS(ompi_osc_pt2pt_replyreq_t),
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1, -1, 1);
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OBJ_CONSTRUCT(&mca_osc_pt2pt_component.p2p_c_longreqs, opal_free_list_t);
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opal_free_list_init(&mca_osc_pt2pt_component.p2p_c_longreqs,
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sizeof(ompi_osc_pt2pt_longreq_t),
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OBJ_CLASS(ompi_osc_pt2pt_longreq_t),
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1, -1, 1);
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ret = mca_bml.bml_register(MCA_BTL_TAG_OSC_PT2PT,
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ompi_osc_pt2pt_component_fragment_cb,
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NULL);
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return ret;
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}
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int
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ompi_osc_pt2pt_component_finalize(void)
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{
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size_t num_modules;
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if (0 !=
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(num_modules = opal_hash_table_get_size(&mca_osc_pt2pt_component.p2p_c_modules))) {
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opal_output(0, "WARNING: There were %d Windows created but not freed.",
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num_modules);
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}
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mca_bml.bml_register(MCA_BTL_TAG_OSC_PT2PT, NULL, NULL);
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OBJ_DESTRUCT(&mca_osc_pt2pt_component.p2p_c_longreqs);
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OBJ_DESTRUCT(&mca_osc_pt2pt_component.p2p_c_replyreqs);
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OBJ_DESTRUCT(&mca_osc_pt2pt_component.p2p_c_sendreqs);
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OBJ_DESTRUCT(&mca_osc_pt2pt_component.p2p_c_modules);
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OBJ_DESTRUCT(&mca_osc_pt2pt_component.p2p_c_lock);
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return OMPI_SUCCESS;
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}
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int
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ompi_osc_pt2pt_component_query(ompi_win_t *win,
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ompi_info_t *info,
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ompi_communicator_t *comm)
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{
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/* we can always run - return a low priority */
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return 10;
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}
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int
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ompi_osc_pt2pt_component_select(ompi_win_t *win,
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ompi_info_t *info,
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ompi_communicator_t *comm)
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{
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ompi_osc_pt2pt_module_t *module;
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int ret, i;
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char *sync_string;
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/* create module structure */
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module = malloc(sizeof(ompi_osc_pt2pt_module_t));
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if (NULL == module) return OMPI_ERROR;
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/* fill in the function pointer part */
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memcpy(module, &ompi_osc_pt2pt_module_template,
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sizeof(ompi_osc_base_module_t));
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/* initialize the p2p part */
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OBJ_CONSTRUCT(&(module->p2p_lock), opal_mutex_t);
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OBJ_CONSTRUCT(&(module->p2p_acc_lock), opal_mutex_t);
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module->p2p_win = win;
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ret = ompi_comm_dup(comm, &(module->p2p_comm));
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if (ret != OMPI_SUCCESS) {
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OBJ_DESTRUCT(&(module->p2p_acc_lock));
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OBJ_DESTRUCT(&(module->p2p_lock));
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free(module);
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return ret;
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}
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OBJ_CONSTRUCT(&module->p2p_pending_sendreqs, opal_list_t);
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module->p2p_num_pending_sendreqs = malloc(sizeof(short) *
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ompi_comm_size(module->p2p_comm));
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if (NULL == module->p2p_num_pending_sendreqs) {
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OBJ_DESTRUCT(&module->p2p_pending_sendreqs);
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ompi_comm_free(&comm);
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OBJ_DESTRUCT(&(module->p2p_acc_lock));
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OBJ_DESTRUCT(&(module->p2p_lock));
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free(module);
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return ret;
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}
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memset(module->p2p_num_pending_sendreqs, 0,
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sizeof(short) * ompi_comm_size(module->p2p_comm));
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module->p2p_num_pending_out = 0;
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module->p2p_num_pending_in = 0;
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module->p2p_tag_counter = 0;
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OBJ_CONSTRUCT(&(module->p2p_long_msgs), opal_list_t);
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OBJ_CONSTRUCT(&(module->p2p_copy_pending_sendreqs), opal_list_t);
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module->p2p_copy_num_pending_sendreqs = malloc(sizeof(short) *
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ompi_comm_size(module->p2p_comm));
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if (NULL == module->p2p_copy_num_pending_sendreqs) {
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OBJ_DESTRUCT(&module->p2p_copy_pending_sendreqs);
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OBJ_DESTRUCT(&module->p2p_long_msgs);
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free(module->p2p_num_pending_sendreqs);
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OBJ_DESTRUCT(&module->p2p_pending_sendreqs);
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ompi_comm_free(&comm);
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OBJ_DESTRUCT(&(module->p2p_acc_lock));
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OBJ_DESTRUCT(&(module->p2p_lock));
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free(module);
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return ret;
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}
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memset(module->p2p_num_pending_sendreqs, 0,
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sizeof(short) * ompi_comm_size(module->p2p_comm));
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module->p2p_eager_send = check_config_value_bool("eager_send", info);
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/* fence data */
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module->p2p_fence_coll_counts = malloc(sizeof(int) *
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ompi_comm_size(module->p2p_comm));
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if (NULL == module->p2p_fence_coll_counts) {
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free(module->p2p_copy_num_pending_sendreqs);
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OBJ_DESTRUCT(&module->p2p_copy_pending_sendreqs);
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OBJ_DESTRUCT(&module->p2p_long_msgs);
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free(module->p2p_num_pending_sendreqs);
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OBJ_DESTRUCT(&module->p2p_pending_sendreqs);
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ompi_comm_free(&comm);
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OBJ_DESTRUCT(&(module->p2p_acc_lock));
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OBJ_DESTRUCT(&(module->p2p_lock));
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free(module);
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return ret;
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}
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for (i = 0 ; i < ompi_comm_size(module->p2p_comm) ; ++i) {
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module->p2p_fence_coll_counts[i] = 1;
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}
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module->p2p_fence_coll_results = malloc(sizeof(int) *
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ompi_comm_size(module->p2p_comm));
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if (NULL == module->p2p_fence_coll_counts) {
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free(module->p2p_fence_coll_counts);
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free(module->p2p_copy_num_pending_sendreqs);
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OBJ_DESTRUCT(&module->p2p_copy_pending_sendreqs);
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OBJ_DESTRUCT(&module->p2p_long_msgs);
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free(module->p2p_num_pending_sendreqs);
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OBJ_DESTRUCT(&module->p2p_pending_sendreqs);
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ompi_comm_free(&comm);
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OBJ_DESTRUCT(&(module->p2p_acc_lock));
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OBJ_DESTRUCT(&(module->p2p_lock));
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free(module);
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return ret;
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}
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/* figure out what sync method to use */
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mca_base_param_lookup_string(fence_sync_index, &sync_string);
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if (0 == strcmp(sync_string, "reduce_scatter")) {
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module->p2p_fence_sync_type = OSC_SYNC_REDUCE_SCATTER;
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} else if (0 == strcmp(sync_string, "allreduce")) {
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module->p2p_fence_sync_type = OSC_SYNC_ALLREDUCE;
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} else if (0 == strcmp(sync_string, "alltoall")) {
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module->p2p_fence_sync_type = OSC_SYNC_ALLTOALL;
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} else {
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opal_output(0, "invalid value for fence_sync_method parameter: %s\n", sync_string);
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return OMPI_ERROR;
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}
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/* pwsc data */
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module->p2p_pw_group = NULL;
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module->p2p_sc_group = NULL;
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/* lock data */
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module->p2p_lock_status = 0;
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module->p2p_shared_count = 0;
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OBJ_CONSTRUCT(&(module->p2p_locks_pending), opal_list_t);
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module->p2p_lock_received_ack = 0;
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/* update component data */
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OPAL_THREAD_LOCK(&mca_osc_pt2pt_component.p2p_c_lock);
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opal_hash_table_set_value_uint32(&mca_osc_pt2pt_component.p2p_c_modules,
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module->p2p_comm->c_contextid,
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module);
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OPAL_THREAD_UNLOCK(&mca_osc_pt2pt_component.p2p_c_lock);
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/* fill in window information */
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win->w_osc_module = (ompi_osc_base_module_t*) module;
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if (check_config_value_bool("no_locks", info)) {
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win->w_flags |= OMPI_WIN_NO_LOCKS;
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}
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/* sync memory - make sure all initialization completed */
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opal_atomic_mb();
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/* register to receive fragment callbacks */
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ret = mca_bml.bml_register(MCA_BTL_TAG_OSC_PT2PT,
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ompi_osc_pt2pt_component_fragment_cb,
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NULL);
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if (module->p2p_eager_send) {
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/* need to barrier if eager sending or we can receive before the
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other side has been fully setup, causing much gnashing of
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teeth. */
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module->p2p_comm->c_coll.coll_barrier(module->p2p_comm);
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}
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return ret;
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}
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/* dispatch for callback on message completion */
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void
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ompi_osc_pt2pt_component_fragment_cb(struct mca_btl_base_module_t *btl,
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mca_btl_base_tag_t tag,
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mca_btl_base_descriptor_t *descriptor,
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void *cbdata)
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{
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int ret;
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ompi_osc_pt2pt_module_t *module;
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void *payload;
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assert(descriptor->des_dst[0].seg_len >=
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sizeof(ompi_osc_pt2pt_base_header_t));
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/* handle message */
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switch (((ompi_osc_pt2pt_base_header_t*) descriptor->des_dst[0].seg_addr.pval)->hdr_type) {
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case OMPI_OSC_PT2PT_HDR_PUT:
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{
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ompi_osc_pt2pt_send_header_t *header;
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/* get our header and payload */
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header = (ompi_osc_pt2pt_send_header_t*)
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descriptor->des_dst[0].seg_addr.pval;
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payload = (void*) (header + 1);
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#if !defined(WORDS_BIGENDIAN) && OMPI_ENABLE_HETEROGENEOUS_SUPPORT
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if (header->hdr_base.hdr_flags & OMPI_OSC_PT2PT_HDR_FLAG_NBO) {
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OMPI_OSC_PT2PT_SEND_HDR_NTOH(*header);
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}
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#endif
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/* get our module pointer */
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module = ompi_osc_pt2pt_windx_to_module(header->hdr_windx);
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if (NULL == module) return;
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ret = ompi_osc_pt2pt_sendreq_recv_put(module, header, payload);
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}
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break;
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case OMPI_OSC_PT2PT_HDR_ACC:
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{
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ompi_osc_pt2pt_send_header_t *header;
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/* get our header and payload */
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header = (ompi_osc_pt2pt_send_header_t*)
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descriptor->des_dst[0].seg_addr.pval;
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payload = (void*) (header + 1);
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#if !defined(WORDS_BIGENDIAN) && OMPI_ENABLE_HETEROGENEOUS_SUPPORT
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if (header->hdr_base.hdr_flags & OMPI_OSC_PT2PT_HDR_FLAG_NBO) {
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OMPI_OSC_PT2PT_SEND_HDR_NTOH(*header);
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}
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#endif
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/* get our module pointer */
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module = ompi_osc_pt2pt_windx_to_module(header->hdr_windx);
|
|
if (NULL == module) return;
|
|
|
|
/* receive into temporary buffer */
|
|
ret = ompi_osc_pt2pt_sendreq_recv_accum(module, header, payload);
|
|
}
|
|
break;
|
|
|
|
case OMPI_OSC_PT2PT_HDR_GET:
|
|
{
|
|
ompi_datatype_t *datatype;
|
|
ompi_osc_pt2pt_send_header_t *header;
|
|
ompi_osc_pt2pt_replyreq_t *replyreq;
|
|
ompi_proc_t *proc;
|
|
|
|
/* get our header and payload */
|
|
header = (ompi_osc_pt2pt_send_header_t*)
|
|
descriptor->des_dst[0].seg_addr.pval;
|
|
payload = (void*) (header + 1);
|
|
|
|
#if !defined(WORDS_BIGENDIAN) && OMPI_ENABLE_HETEROGENEOUS_SUPPORT
|
|
if (header->hdr_base.hdr_flags & OMPI_OSC_PT2PT_HDR_FLAG_NBO) {
|
|
OMPI_OSC_PT2PT_SEND_HDR_NTOH(*header);
|
|
}
|
|
#endif
|
|
|
|
/* get our module pointer */
|
|
module = ompi_osc_pt2pt_windx_to_module(header->hdr_windx);
|
|
if (NULL == module) return;
|
|
|
|
/* create or get a pointer to our datatype */
|
|
proc = module->p2p_comm->c_pml_procs[header->hdr_origin]->proc_ompi;
|
|
datatype = ompi_osc_pt2pt_datatype_create(proc, &payload);
|
|
|
|
/* create replyreq sendreq */
|
|
ret = ompi_osc_pt2pt_replyreq_alloc_init(module,
|
|
header->hdr_origin,
|
|
header->hdr_origin_sendreq,
|
|
header->hdr_target_disp,
|
|
header->hdr_target_count,
|
|
datatype,
|
|
&replyreq);
|
|
|
|
/* send replyreq */
|
|
ompi_osc_pt2pt_replyreq_send(module, replyreq);
|
|
|
|
/* sendreq does the right retain, so we can release safely */
|
|
OBJ_RELEASE(datatype);
|
|
}
|
|
break;
|
|
|
|
case OMPI_OSC_PT2PT_HDR_REPLY:
|
|
{
|
|
ompi_osc_pt2pt_reply_header_t *header;
|
|
ompi_osc_pt2pt_sendreq_t *sendreq;
|
|
|
|
/* get our header and payload */
|
|
header = (ompi_osc_pt2pt_reply_header_t*)
|
|
descriptor->des_dst[0].seg_addr.pval;
|
|
payload = (void*) (header + 1);
|
|
|
|
#if !defined(WORDS_BIGENDIAN) && OMPI_ENABLE_HETEROGENEOUS_SUPPORT
|
|
if (header->hdr_base.hdr_flags & OMPI_OSC_PT2PT_HDR_FLAG_NBO) {
|
|
OMPI_OSC_PT2PT_REPLY_HDR_NTOH(*header);
|
|
}
|
|
#endif
|
|
|
|
/* get original sendreq pointer */
|
|
sendreq = (ompi_osc_pt2pt_sendreq_t*) header->hdr_origin_sendreq.pval;
|
|
module = sendreq->req_module;
|
|
|
|
/* receive data */
|
|
ompi_osc_pt2pt_replyreq_recv(module, sendreq, header, payload);
|
|
}
|
|
break;
|
|
case OMPI_OSC_PT2PT_HDR_POST:
|
|
{
|
|
ompi_osc_pt2pt_control_header_t *header =
|
|
(ompi_osc_pt2pt_control_header_t*)
|
|
descriptor->des_dst[0].seg_addr.pval;
|
|
|
|
#if !defined(WORDS_BIGENDIAN) && OMPI_ENABLE_HETEROGENEOUS_SUPPORT
|
|
if (header->hdr_base.hdr_flags & OMPI_OSC_PT2PT_HDR_FLAG_NBO) {
|
|
OMPI_OSC_PT2PT_CONTROL_HDR_NTOH(*header);
|
|
}
|
|
#endif
|
|
|
|
/* get our module pointer */
|
|
module = ompi_osc_pt2pt_windx_to_module(header->hdr_windx);
|
|
if (NULL == module) return;
|
|
|
|
OPAL_THREAD_ADD32(&(module->p2p_num_pending_in), -1);
|
|
}
|
|
break;
|
|
case OMPI_OSC_PT2PT_HDR_COMPLETE:
|
|
{
|
|
ompi_osc_pt2pt_control_header_t *header =
|
|
(ompi_osc_pt2pt_control_header_t*)
|
|
descriptor->des_dst[0].seg_addr.pval;
|
|
|
|
#if !defined(WORDS_BIGENDIAN) && OMPI_ENABLE_HETEROGENEOUS_SUPPORT
|
|
if (header->hdr_base.hdr_flags & OMPI_OSC_PT2PT_HDR_FLAG_NBO) {
|
|
OMPI_OSC_PT2PT_CONTROL_HDR_NTOH(*header);
|
|
}
|
|
#endif
|
|
|
|
/* get our module pointer */
|
|
module = ompi_osc_pt2pt_windx_to_module(header->hdr_windx);
|
|
if (NULL == module) return;
|
|
|
|
/* we've heard from one more place, and have value reqs to
|
|
process */
|
|
OPAL_THREAD_ADD32(&(module->p2p_num_pending_out), -1);
|
|
OPAL_THREAD_ADD32(&(module->p2p_num_pending_in), header->hdr_value[0]);
|
|
}
|
|
break;
|
|
|
|
case OMPI_OSC_PT2PT_HDR_LOCK_REQ:
|
|
{
|
|
ompi_osc_pt2pt_control_header_t *header =
|
|
(ompi_osc_pt2pt_control_header_t*)
|
|
descriptor->des_dst[0].seg_addr.pval;
|
|
|
|
#if !defined(WORDS_BIGENDIAN) && OMPI_ENABLE_HETEROGENEOUS_SUPPORT
|
|
if (header->hdr_base.hdr_flags & OMPI_OSC_PT2PT_HDR_FLAG_NBO) {
|
|
OMPI_OSC_PT2PT_CONTROL_HDR_NTOH(*header);
|
|
}
|
|
#endif
|
|
|
|
/* get our module pointer */
|
|
module = ompi_osc_pt2pt_windx_to_module(header->hdr_windx);
|
|
if (NULL == module) return;
|
|
|
|
if (header->hdr_value[1] > 0) {
|
|
ompi_osc_pt2pt_passive_lock(module, header->hdr_value[0],
|
|
header->hdr_value[1]);
|
|
} else {
|
|
OPAL_THREAD_ADD32(&(module->p2p_lock_received_ack), 1);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case OMPI_OSC_PT2PT_HDR_UNLOCK_REQ:
|
|
{
|
|
ompi_osc_pt2pt_control_header_t *header =
|
|
(ompi_osc_pt2pt_control_header_t*)
|
|
descriptor->des_dst[0].seg_addr.pval;
|
|
|
|
#if !defined(WORDS_BIGENDIAN) && OMPI_ENABLE_HETEROGENEOUS_SUPPORT
|
|
if (header->hdr_base.hdr_flags & OMPI_OSC_PT2PT_HDR_FLAG_NBO) {
|
|
OMPI_OSC_PT2PT_CONTROL_HDR_NTOH(*header);
|
|
}
|
|
#endif
|
|
|
|
/* get our module pointer */
|
|
module = ompi_osc_pt2pt_windx_to_module(header->hdr_windx);
|
|
if (NULL == module) return;
|
|
|
|
ompi_osc_pt2pt_passive_unlock(module, header->hdr_value[0],
|
|
header->hdr_value[1]);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
/* BWB - FIX ME - this sucks */
|
|
opal_output(0, "received packet for Window with unknown type");
|
|
abort();
|
|
}
|
|
}
|