e551c5f1a3
when we precalculate most of the addresses there is no point to have separate BTL for this. The sm_progress() code become much more simple as a result. This commit was SVN r14071.
431 строка
15 KiB
C
431 строка
15 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) 2004-2006 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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* $COPYRIGHT$
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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 <errno.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif /* HAVE_UNISTD_H */
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif /* HAVE_STRING_H */
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#ifdef HAVE_FCNTL_H
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#include <fcntl.h>
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#endif /* HAVE_FCNTL_H */
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif /* HAVE_SYS_TYPES_H */
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#ifdef HAVE_SYS_MMAN_H
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#include <sys/mman.h>
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#endif /* HAVE_SYS_MMAN_H */
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#ifdef HAVE_SYS_STAT_H
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#include <sys/stat.h> /* for mkfifo */
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#endif /* HAVE_SYS_STAT_H */
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#include "ompi/constants.h"
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#include "opal/sys/cache.h"
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#include "opal/event/event.h"
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#include "opal/util/if.h"
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#include "opal/util/argv.h"
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#include "opal/util/output.h"
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#include "orte/util/sys_info.h"
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#include "orte/util/proc_info.h"
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#include "ompi/mca/pml/pml.h"
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#include "opal/mca/base/mca_base_param.h"
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#include "ompi/mca/pml/base/pml_base_module_exchange.h"
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#include "ompi/mca/mpool/base/base.h"
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#include "ompi/mca/common/sm/common_sm_mmap.h"
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#include "ompi/mca/btl/base/btl_base_error.h"
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#include "btl_sm.h"
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#include "btl_sm_frag.h"
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#include "btl_sm_fifo.h"
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/*
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* Shared Memory (SM) component instance.
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*/
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mca_btl_sm_component_t mca_btl_sm_component = {
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{ /* super is being filled in */
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/* First, the mca_base_component_t struct containing meta information
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about the component itself */
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{
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/* Indicate that we are a pml v1.0.0 component (which also implies a
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specific MCA version) */
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MCA_BTL_BASE_VERSION_1_0_1,
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"sm", /* MCA component name */
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OMPI_MAJOR_VERSION, /* MCA component major version */
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OMPI_MINOR_VERSION, /* MCA component minor version */
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OMPI_RELEASE_VERSION, /* MCA component release version */
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mca_btl_sm_component_open, /* component open */
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mca_btl_sm_component_close /* component close */
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},
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/* Next the MCA v1.0.0 component meta data */
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{
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/* The component is not checkpoint ready */
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MCA_BASE_METADATA_PARAM_NONE
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},
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mca_btl_sm_component_init,
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mca_btl_sm_component_progress,
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} /* end super */
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};
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/*
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* utility routines for parameter registration
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*/
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static inline char* mca_btl_sm_param_register_string(
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const char* param_name,
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const char* default_value)
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{
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char *param_value;
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int id = mca_base_param_register_string("btl","sm",param_name,NULL,default_value);
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mca_base_param_lookup_string(id, ¶m_value);
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return param_value;
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}
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static inline int mca_btl_sm_param_register_int(
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const char* param_name,
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int default_value)
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{
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int id = mca_base_param_register_int("btl","sm",param_name,NULL,default_value);
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int param_value = default_value;
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mca_base_param_lookup_int(id,¶m_value);
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return param_value;
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}
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/*
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* Called by MCA framework to open the component, registers
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* component parameters.
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*/
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int mca_btl_sm_component_open(void)
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{
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/* register SM component parameters */
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mca_btl_sm_component.sm_free_list_num =
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mca_btl_sm_param_register_int("free_list_num", 8);
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mca_btl_sm_component.sm_free_list_max =
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mca_btl_sm_param_register_int("free_list_max", -1);
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mca_btl_sm_component.sm_free_list_inc =
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mca_btl_sm_param_register_int("free_list_inc", 64);
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mca_btl_sm_component.sm_exclusivity =
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mca_btl_sm_param_register_int("exclusivity", MCA_BTL_EXCLUSIVITY_HIGH-1);
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mca_btl_sm_component.sm_latency =
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mca_btl_sm_param_register_int("latency", 100);
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mca_btl_sm_component.sm_max_procs =
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mca_btl_sm_param_register_int("max_procs", -1);
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mca_btl_sm_component.sm_extra_procs =
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mca_btl_sm_param_register_int("sm_extra_procs", -1);
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mca_btl_sm_component.sm_mpool_name =
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mca_btl_sm_param_register_string("mpool", "sm");
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mca_btl_sm_component.eager_limit =
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mca_btl_sm_param_register_int("eager_limit", 4*1024);
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mca_btl_sm_component.max_frag_size =
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mca_btl_sm_param_register_int("max_frag_size", 32*1024);
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mca_btl_sm_component.size_of_cb_queue =
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mca_btl_sm_param_register_int("size_of_cb_queue", 128);
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mca_btl_sm_component.cb_lazy_free_freq =
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mca_btl_sm_param_register_int("cb_lazy_free_freq", 120);
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/* make sure that queue size and lazy free frequency are consistent -
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* want to make sure that slots are freed at a rate they can be
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* reused, w/o allocating extra new circular buffer fifo arrays */
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if( (float)(mca_btl_sm_component.cb_lazy_free_freq) >=
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0.95*(float)(mca_btl_sm_component.size_of_cb_queue) ) {
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/* upper limit */
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mca_btl_sm_component.cb_lazy_free_freq=
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(int)(0.95*(float)(mca_btl_sm_component.size_of_cb_queue));
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/* lower limit */
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if( 0>= mca_btl_sm_component.cb_lazy_free_freq ) {
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mca_btl_sm_component.cb_lazy_free_freq=1;
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}
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}
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/* default number of extra procs to allow for future growth */
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mca_btl_sm_component.sm_extra_procs =
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mca_btl_sm_param_register_int("sm_extra_procs", 2);
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/* initialize objects */
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OBJ_CONSTRUCT(&mca_btl_sm_component.sm_lock, opal_mutex_t);
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OBJ_CONSTRUCT(&mca_btl_sm_component.sm_frags, ompi_free_list_t);
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OBJ_CONSTRUCT(&mca_btl_sm_component.sm_frags1, ompi_free_list_t);
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OBJ_CONSTRUCT(&mca_btl_sm_component.sm_frags2, ompi_free_list_t);
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return OMPI_SUCCESS;
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}
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/*
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* component cleanup - sanity checking of queue lengths
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*/
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int mca_btl_sm_component_close(void)
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{
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int return_value = OMPI_SUCCESS;
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OBJ_DESTRUCT(&mca_btl_sm_component.sm_lock);
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/**
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* We don't have to destroy the fragment lists. They are allocated
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* directly into the mmapped file, they will auto-magically dissapear
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* when the file get unmapped.
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*/
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/*OBJ_DESTRUCT(&mca_btl_sm_component.sm_frags1);*/
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/*OBJ_DESTRUCT(&mca_btl_sm_component.sm_frags2);*/
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/* unmap the shared memory control structure */
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if(mca_btl_sm_component.mmap_file != NULL) {
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return_value = mca_common_sm_mmap_fini( mca_btl_sm_component.mmap_file );
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if( OMPI_SUCCESS != return_value ) {
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return_value=OMPI_ERROR;
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opal_output(0," munmap failed :: file - %s :: errno - %d \n",
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mca_btl_sm_component.mmap_file->map_addr,
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errno);
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goto CLEANUP;
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}
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/* unlink file, so that it will be deleted when all references
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* to it are gone - no error checking, since we want all procs
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* to call this, so that in an abnormal termination scenario,
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* this file will still get cleaned up */
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unlink(mca_btl_sm_component.mmap_file->map_path);
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OBJ_RELEASE(mca_btl_sm_component.mmap_file);
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}
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#if OMPI_ENABLE_PROGRESS_THREADS == 1
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/* close/cleanup fifo create for event notification */
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if(mca_btl_sm_component.sm_fifo_fd > 0) {
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/* write a done message down the pipe */
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unsigned char cmd = DONE;
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if( write(mca_btl_sm_component.sm_fifo_fd,&cmd,sizeof(cmd)) !=
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sizeof(cmd)){
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opal_output(0, "mca_btl_sm_component_close: write fifo failed: errno=%d\n",
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errno);
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}
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opal_thread_join(&mca_btl_sm_component.sm_fifo_thread, NULL);
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close(mca_btl_sm_component.sm_fifo_fd);
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unlink(mca_btl_sm_component.sm_fifo_path);
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}
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#endif
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CLEANUP:
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/* return */
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return return_value;
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}
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/*
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* SM component initialization
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*/
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mca_btl_base_module_t** mca_btl_sm_component_init(
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int *num_ptls,
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bool enable_progress_threads,
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bool enable_mpi_threads)
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{
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mca_btl_base_module_t **ptls = NULL;
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*num_ptls = 0;
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/* lookup/create shared memory pool only when used */
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mca_btl_sm_component.sm_mpool = NULL;
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mca_btl_sm_component.sm_mpool_base = NULL;
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#if OMPI_ENABLE_PROGRESS_THREADS == 1
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/* create a named pipe to receive events */
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sprintf( mca_btl_sm_component.sm_fifo_path,
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"%s"OPAL_PATH_SEP"sm_fifo.%lu", orte_process_info.job_session_dir,
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(unsigned long)orte_process_info.my_name->vpid );
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if(mkfifo(mca_btl_sm_component.sm_fifo_path, 0660) < 0) {
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opal_output(0, "mca_btl_sm_component_init: mkfifo failed with errno=%d\n",errno);
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return NULL;
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}
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mca_btl_sm_component.sm_fifo_fd = open(mca_btl_sm_component.sm_fifo_path, O_RDWR);
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if(mca_btl_sm_component.sm_fifo_fd < 0) {
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opal_output(0, "mca_btl_sm_component_init: open(%s) failed with errno=%d\n",
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mca_btl_sm_component.sm_fifo_path, errno);
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return NULL;
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}
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OBJ_CONSTRUCT(&mca_btl_sm_component.sm_fifo_thread, opal_thread_t);
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mca_btl_sm_component.sm_fifo_thread.t_run = (opal_thread_fn_t) mca_btl_sm_component_event_thread;
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opal_thread_start(&mca_btl_sm_component.sm_fifo_thread);
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#endif
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/* allocate the Shared Memory PTL */
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*num_ptls = 1;
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ptls = (mca_btl_base_module_t**)malloc((*num_ptls)*sizeof(mca_btl_base_module_t*));
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if (NULL == ptls) {
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return NULL;
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}
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/* get pointer to the ptls */
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ptls[0] = (mca_btl_base_module_t *)(&(mca_btl_sm));
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/* set scheduling parameters */
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mca_btl_sm.super.btl_eager_limit=mca_btl_sm_component.eager_limit;
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mca_btl_sm.super.btl_min_send_size=mca_btl_sm_component.max_frag_size;
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mca_btl_sm.super.btl_max_send_size=mca_btl_sm_component.max_frag_size;
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mca_btl_sm.super.btl_min_rdma_size=mca_btl_sm_component.max_frag_size;
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mca_btl_sm.super.btl_max_rdma_size=mca_btl_sm_component.max_frag_size;
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/* The order in which the SM modules are initialized is important as only
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* the first one (the one using the mca_btl_sm_add_procs_same_base_addr)
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* will setup all the memory for the internal structures (sm_proc_connect).
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* Therefore, the order in which the two SM module will be after the
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* selection is important. We have to make sure they get sorted in the
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* correct order. The simplest way is to force the exclusivity of the
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* second module to something lower than the exclusivity of the first one.
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*/
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mca_btl_sm.super.btl_exclusivity = mca_btl_sm_component.sm_exclusivity;
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mca_btl_sm.super.btl_latency = mca_btl_sm_component.sm_latency; /* lowest latency */
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mca_btl_sm.super.btl_bandwidth = 900; /* not really used now since exclusivity is set to the highest value */
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/* initialize some PTL data */
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/* start with no SM procs */
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mca_btl_sm_component.num_smp_procs = 0;
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mca_btl_sm_component.my_smp_rank = -1; /* not defined */
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/* set flag indicating ptl not inited */
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mca_btl_sm.btl_inited=false;
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return ptls;
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}
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/*
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* SM component progress.
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*/
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#if OMPI_ENABLE_PROGRESS_THREADS == 1
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void mca_btl_sm_component_event_thread(opal_object_t* thread)
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{
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while(1) {
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unsigned char cmd;
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if(read(mca_btl_sm_component.sm_fifo_fd, &cmd, sizeof(cmd)) != sizeof(cmd)) {
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/* error condition */
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return;
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}
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if( DONE == cmd ){
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/* return when done message received */
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return;
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}
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mca_btl_sm_component_progress();
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}
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}
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#endif
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int mca_btl_sm_component_progress(void)
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{
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/* local variables */
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unsigned int peer_smp_rank ;
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mca_btl_sm_frag_t *frag;
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ompi_fifo_t *fifo = NULL;
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mca_btl_sm_hdr_t *hdr;
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int my_smp_rank=mca_btl_sm_component.my_smp_rank;
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int proc;
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int rc = 0;
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/* send progress is made by the PML */
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/*
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* receive progress
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*/
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/* poll each fifo */
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for(proc = 0; proc < mca_btl_sm_component.num_smp_procs - 1; proc++) {
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peer_smp_rank = mca_btl_sm_component.list_smp_procs[proc];
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fifo = &(mca_btl_sm_component.fifo[my_smp_rank][peer_smp_rank]);
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/* if fifo is not yet setup - continue - not data has been sent*/
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if(OMPI_CB_FREE == fifo->tail){
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continue;
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}
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/* aquire thread lock */
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if(opal_using_threads()) {
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opal_atomic_lock(fifo->tail_lock);
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}
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hdr = (mca_btl_sm_hdr_t *)ompi_fifo_read_from_tail(fifo);
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/* release thread lock */
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if(opal_using_threads()) {
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opal_atomic_unlock(fifo->tail_lock);
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}
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if(OMPI_CB_FREE == hdr) {
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continue;
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}
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/* dispatch fragment by type */
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switch(((uintptr_t)hdr) & MCA_BTL_SM_FRAG_TYPE_MASK) {
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case MCA_BTL_SM_FRAG_ACK:
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{
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int status = (uintptr_t)hdr & MCA_BTL_SM_FRAG_STATUS_MASK;
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frag = (mca_btl_sm_frag_t *)((char*)((uintptr_t)hdr &
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(~(MCA_BTL_SM_FRAG_TYPE_MASK |
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MCA_BTL_SM_FRAG_STATUS_MASK))));
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/* completion callback */
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frag->base.des_cbfunc(&mca_btl_sm.super, frag->endpoint,
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&frag->base, status?OMPI_ERROR:OMPI_SUCCESS);
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break;
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}
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case MCA_BTL_SM_FRAG_SEND:
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{
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mca_btl_sm_recv_reg_t* reg;
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/* change the address from address relative to the shared
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* memory address, to a true virtual address */
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hdr = (mca_btl_sm_hdr_t *)((char *)hdr +
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mca_btl_sm_component.sm_offset[peer_smp_rank]);
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/* recv upcall */
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reg = mca_btl_sm.sm_reg + hdr->tag;
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MCA_BTL_SM_FRAG_ALLOC(frag, rc);
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frag->segment.seg_addr.pval = ((char*)hdr) +
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sizeof(mca_btl_sm_hdr_t);
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frag->segment.seg_len = hdr->len;
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reg->cbfunc(&mca_btl_sm.super, hdr->tag, &frag->base,
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reg->cbdata);
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MCA_BTL_SM_FRAG_RETURN(frag);
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MCA_BTL_SM_FIFO_WRITE(
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mca_btl_sm_component.sm_peers[peer_smp_rank],
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my_smp_rank, peer_smp_rank, hdr->frag, rc);
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if(OMPI_SUCCESS != rc)
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goto err;
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break;
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}
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default:
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/* unknown */
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hdr = (mca_btl_sm_hdr_t*)((uintptr_t)hdr->frag |
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MCA_BTL_SM_FRAG_STATUS_MASK);
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MCA_BTL_SM_FIFO_WRITE(
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mca_btl_sm_component.sm_peers[peer_smp_rank],
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my_smp_rank, peer_smp_rank, hdr, rc);
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if(OMPI_SUCCESS != rc)
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goto err;
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break;
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}
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rc++;
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}
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return rc;
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err:
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BTL_ERROR(("SM faild to send message due to shortage of shared memory.\n"));
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mca_btl_sm.error_cb(&mca_btl_sm.super, MCA_BTL_ERROR_FLAGS_FATAL);
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return rc;
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}
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