552c9ca5a0
WHAT: Open our low-level communication infrastructure by moving all necessary components (btl/rcache/allocator/mpool) down in OPAL All the components required for inter-process communications are currently deeply integrated in the OMPI layer. Several groups/institutions have express interest in having a more generic communication infrastructure, without all the OMPI layer dependencies. This communication layer should be made available at a different software level, available to all layers in the Open MPI software stack. As an example, our ORTE layer could replace the current OOB and instead use the BTL directly, gaining access to more reactive network interfaces than TCP. Similarly, external software libraries could take advantage of our highly optimized AM (active message) communication layer for their own purpose. UTK with support from Sandia, developped a version of Open MPI where the entire communication infrastucture has been moved down to OPAL (btl/rcache/allocator/mpool). Most of the moved components have been updated to match the new schema, with few exceptions (mainly BTLs where I have no way of compiling/testing them). Thus, the completion of this RFC is tied to being able to completing this move for all BTLs. For this we need help from the rest of the Open MPI community, especially those supporting some of the BTLs. A non-exhaustive list of BTLs that qualify here is: mx, portals4, scif, udapl, ugni, usnic. This commit was SVN r32317.
311 строки
11 KiB
C
311 строки
11 KiB
C
/*
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* Copyright (c) 2004-2010 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) 2004-2011 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) 2004-2006 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 2007-2012 Los Alamos National Security, LLC. All rights
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* reserved.
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* Copyright (c) 2008 Cisco Systems, Inc. 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 "opal/util/output.h"
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#include <stdlib.h>
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#include <string.h>
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#include "opal/runtime/opal_progress.h"
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#include "opal/mca/btl/base/base.h"
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#include "ompi/runtime/ompi_cr.h"
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#include "ompi/mca/bml/base/base.h"
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#include "ompi/mca/bml/base/bml_base_btl.h"
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#include "ompi/mca/pml/base/base.h"
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#include "ompi/proc/proc.h"
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#include "bml_r2.h"
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#include "bml_r2_ft.h"
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int mca_bml_r2_ft_event(int state)
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{
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#if OPAL_ENABLE_FT_CR == 1
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static bool first_continue_pass = false;
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ompi_proc_t** procs = NULL;
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size_t num_procs;
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size_t btl_idx;
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int ret, p;
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int loc_state;
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int param_type = -1;
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const char **btl_list;
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ompi_rte_collective_t coll;
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if(OPAL_CRS_CHECKPOINT == state) {
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/* Do nothing for now */
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}
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else if(OPAL_CRS_CONTINUE == state) {
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first_continue_pass = !first_continue_pass;
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/* Since nothing in Checkpoint, we are fine here (unless required by BTL) */
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if( orte_cr_continue_like_restart && !first_continue_pass) {
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procs = ompi_proc_all(&num_procs);
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if(NULL == procs) {
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return OMPI_ERR_OUT_OF_RESOURCE;
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}
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}
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}
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else if(OPAL_CRS_RESTART_PRE == state ) {
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/* Nothing here */
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}
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else if(OPAL_CRS_RESTART == state ) {
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procs = ompi_proc_all(&num_procs);
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if(NULL == procs) {
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return OMPI_ERR_OUT_OF_RESOURCE;
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}
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}
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else if(OPAL_CRS_TERM == state ) {
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;
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}
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else {
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;
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}
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/* Never call the ft_event functions attached to the BTLs on the second
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* pass of RESTART since on the first pass they were unloaded and therefore
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* no longer exist.
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*/
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if( OPAL_CRS_RESTART != state ) {
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if( OPAL_CRS_CONTINUE == state && !first_continue_pass ) {
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;
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} else {
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/* Since we only ever call into the BTLs once during the first restart
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* pass, just lie to them on this pass for a bit of local clarity.
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*/
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if( OPAL_CRS_RESTART_PRE == state ) {
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loc_state = OPAL_CRS_RESTART;
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} else {
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loc_state = state;
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}
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/*
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* Call ft_event in:
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* - BTL modules
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* - MPool modules
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*
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* These should be cleaning out stale state, and memory references in
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* preparation for being shut down.
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*/
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for(btl_idx = 0; btl_idx < mca_bml_r2.num_btl_modules; btl_idx++) {
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/*
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* Notify Mpool
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*/
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if( NULL != (mca_bml_r2.btl_modules[btl_idx])->btl_mpool &&
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NULL != (mca_bml_r2.btl_modules[btl_idx])->btl_mpool->mpool_ft_event ) {
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opal_output_verbose(10, ompi_cr_output,
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"bml:r2: ft_event: Notify the %s MPool.\n",
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(mca_bml_r2.btl_modules[btl_idx])->btl_mpool->mpool_component->mpool_version.mca_component_name);
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if(OMPI_SUCCESS != (ret = (mca_bml_r2.btl_modules[btl_idx])->btl_mpool->mpool_ft_event(loc_state) ) ) {
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continue;
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}
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}
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/*
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* Notify BTL
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*/
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if( NULL != (mca_bml_r2.btl_modules[btl_idx])->btl_ft_event) {
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opal_output_verbose(10, ompi_cr_output,
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"bml:r2: ft_event: Notify the %s BTL.\n",
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(mca_bml_r2.btl_modules[btl_idx])->btl_component->btl_version.mca_component_name);
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if(OMPI_SUCCESS != (ret = (mca_bml_r2.btl_modules[btl_idx])->btl_ft_event(loc_state) ) ) {
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continue;
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}
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}
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}
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} /* OPAL_CRS_CONTINUE == state && !first_continue_pass */
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}
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if(OPAL_CRS_CHECKPOINT == state) {
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;
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}
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else if(OPAL_CRS_CONTINUE == state) {
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/* Matches OPAL_CRS_RESTART_PRE */
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if( orte_cr_continue_like_restart && first_continue_pass) {
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if( OMPI_SUCCESS != (ret = mca_bml_r2_finalize()) ) {
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opal_output(0, "bml:r2: ft_event(Restart): Failed to finalize BML framework\n");
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return ret;
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}
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if( OMPI_SUCCESS != (ret = mca_base_framework_close(&opal_btl_base_framework)) ) {
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opal_output(0, "bml:r2: ft_event(Restart): Failed to close BTL framework\n");
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return ret;
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}
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}
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/* Matches OPAL_CRS_RESTART */
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else if( orte_cr_continue_like_restart && !first_continue_pass ) {
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/*
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* Barrier to make all processes have been successfully restarted before
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* we try to remove some restart only files.
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*/
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OBJ_CONSTRUCT(&coll, ompi_rte_collective_t);
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coll.id = ompi_process_info.peer_init_barrier;
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if (OMPI_SUCCESS != (ret = ompi_rte_barrier(&coll))) {
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opal_output(0, "bml:r2: ft_event(Restart): Failed in ompi_rte_barrier (%d)", ret);
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return ret;
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}
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while (coll.active) {
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opal_progress();
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}
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/*
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* Re-open the BTL framework to get the full list of components.
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*/
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if( OMPI_SUCCESS != (ret = mca_base_framework_open(&opal_btl_base_framework, 0)) ) {
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opal_output(0, "bml:r2: ft_event(Restart): Failed to open BTL framework\n");
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return ret;
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}
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/*
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* Re-select the BTL components/modules
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* This will cause the BTL components to discover the available
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* network options on this machine, and post proper modex informaiton.
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*/
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if( OMPI_SUCCESS != (ret = mca_btl_base_select(OPAL_ENABLE_PROGRESS_THREADS,
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OMPI_ENABLE_THREAD_MULTIPLE) ) ) {
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opal_output(0, "bml:r2: ft_event(Restart): Failed to select in BTL framework\n");
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return ret;
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}
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/*
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* Clear some structures so we can properly repopulate them
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*/
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mca_bml_r2.btls_added = false;
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for(p = 0; p < (int)num_procs; ++p) {
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if( NULL != procs[p]->proc_endpoints[OMPI_PROC_ENDPOINT_TAG_BML]) {
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OBJ_RELEASE(procs[p]->proc_endpoints[OMPI_PROC_ENDPOINT_TAG_BML]);
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procs[p]->proc_endpoints[OMPI_PROC_ENDPOINT_TAG_BML] = NULL;
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}
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OBJ_RELEASE(procs[p]);
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}
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if( NULL != procs ) {
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free(procs);
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procs = NULL;
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}
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}
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}
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else if(OPAL_CRS_RESTART_PRE == state ) {
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opal_output_verbose(10, ompi_cr_output,
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"bml:r2: ft_event(Restart): Finalize BML\n");
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/*
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* Finalize the BML
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* - Flush progress functions
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* - Flush module references
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* - mca_btl_base_close()
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* Need to do this because we may have BTL components that were
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* unloaded in the first selection that may be available now.
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* Conversely we may have BTL components loaded now that
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* are not available now.
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*/
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if( OMPI_SUCCESS != (ret = mca_bml_r2_finalize()) ) {
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opal_output(0, "bml:r2: ft_event(Restart): Failed to finalize BML framework\n");
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return ret;
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}
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if( OMPI_SUCCESS != (ret = mca_base_framework_close(&opal_btl_base_framework)) ) {
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opal_output(0, "bml:r2: ft_event(Restart): Failed to close BTL framework\n");
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return ret;
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}
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}
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else if(OPAL_CRS_RESTART == state ) {
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/*
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* Barrier to make all processes have been successfully restarted before
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* we try to remove some restart only files.
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*/
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OBJ_CONSTRUCT(&coll, ompi_rte_collective_t);
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coll.id = ompi_process_info.peer_init_barrier;
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if (OMPI_SUCCESS != (ret = ompi_rte_barrier(&coll))) {
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opal_output(0, "bml:r2: ft_event(Restart): Failed in ompi_rte_barrier (%d)", ret);
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return ret;
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}
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while (coll.active) {
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opal_progress();
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}
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/*
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* Re-open the BTL framework to get the full list of components.
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* - but first clear the MCA value that was there
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*/
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param_type = mca_base_var_find("ompi", "btl", NULL, NULL);
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btl_list = NULL;
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mca_base_var_get_value(param_type, &btl_list, NULL, NULL);
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opal_output_verbose(11, ompi_cr_output,
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"Restart (Previous BTL MCA): <%s>\n", btl_list ? btl_list[0] : "");
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if( OMPI_SUCCESS != (ret = mca_base_framework_open(&opal_btl_base_framework, 0)) ) {
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opal_output(0, "bml:r2: ft_event(Restart): Failed to open BTL framework\n");
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return ret;
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}
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/* The reregistered paramter is guaranteed to have the same index */
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btl_list = NULL;
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mca_base_var_get_value(param_type, &btl_list, NULL, NULL);
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opal_output_verbose(11, ompi_cr_output,
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"Restart (New BTL MCA): <%s>\n", btl_list ? btl_list[0] : "");
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if( NULL != btl_list ) {
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free(btl_list);
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btl_list = NULL;
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}
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/*
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* Re-select the BTL components/modules
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* This will cause the BTL components to discover the available
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* network options on this machine, and post proper modex informaiton.
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*/
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if( OMPI_SUCCESS != (ret = mca_btl_base_select(OPAL_ENABLE_PROGRESS_THREADS,
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OMPI_ENABLE_THREAD_MULTIPLE) ) ) {
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opal_output(0, "bml:r2: ft_event(Restart): Failed to select in BTL framework\n");
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return ret;
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}
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/*
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* Clear some structures so we can properly repopulate them
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*/
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mca_bml_r2.btls_added = false;
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for(p = 0; p < (int)num_procs; ++p) {
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if( NULL != procs[p]->proc_endpoints[OMPI_PROC_ENDPOINT_TAG_BML]) {
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OBJ_RELEASE(procs[p]->proc_endpoints[OMPI_PROC_ENDPOINT_TAG_BML]);
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procs[p]->proc_endpoints[OMPI_PROC_ENDPOINT_TAG_BML] = NULL;
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}
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OBJ_RELEASE(procs[p]);
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}
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if( NULL != procs ) {
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free(procs);
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procs = NULL;
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}
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}
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else if(OPAL_CRS_TERM == state ) {
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;
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}
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else {
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;
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}
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#endif
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return OMPI_SUCCESS;
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}
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