fceabb2498
This is a fairly intrusive change, but outside of the moving of opal/event to opal/mca/event, the only changes involved (a) changing all calls to opal_event functions to reflect the new framework instead, and (b) ensuring that all opal_event_t objects are properly constructed since they are now true opal_objects. Note: Shiqing has just returned from vacation and has not yet had a chance to complete the Windows integration. Thus, this commit almost certainly breaks Windows support on the trunk. However, I want this to have a chance to soak for as long as possible before I become less available a week from today (going to be at a class for 5 days, and thus will only be sparingly available) so we can find and fix any problems. Biggest change is moving the libevent code from opal/event to a new opal/mca/event framework. This was done to make it much easier to update libevent in the future. New versions can be inserted as a new component and tested in parallel with the current version until validated, then we can remove the earlier version if we so choose. This is a statically built framework ala installdirs, so only one component will build at a time. There is no selection logic - the sole compiled component simply loads its function pointers into the opal_event struct. I have gone thru the code base and converted all the libevent calls I could find. However, I cannot compile nor test every environment. It is therefore quite likely that errors remain in the system. Please keep an eye open for two things: 1. compile-time errors: these will be obvious as calls to the old functions (e.g., opal_evtimer_new) must be replaced by the new framework APIs (e.g., opal_event.evtimer_new) 2. run-time errors: these will likely show up as segfaults due to missing constructors on opal_event_t objects. It appears that it became a typical practice for people to "init" an opal_event_t by simply using memset to zero it out. This will no longer work - you must either OBJ_NEW or OBJ_CONSTRUCT an opal_event_t. I tried to catch these cases, but may have missed some. Believe me, you'll know when you hit it. There is also the issue of the new libevent "no recursion" behavior. As I described on a recent email, we will have to discuss this and figure out what, if anything, we need to do. This commit was SVN r23925.
492 строки
29 KiB
C
492 строки
29 KiB
C
/*
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* Copyright (c) 2004-2005 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) 2004-2010 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) 2009 Sun Microsystems, 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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/**
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* @file
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*/
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#ifndef OMPI_PML_DR_SEND_REQUEST_H
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#define OMPI_PML_DR_SEND_REQUEST_H
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#include "opal/util/crc.h"
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#include "ompi_config.h"
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#include "opal/datatype/opal_convertor.h"
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#include "ompi/mca/btl/btl.h"
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#include "ompi/mca/pml/base/pml_base_sendreq.h"
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#include "ompi/mca/mpool/base/base.h"
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#include "ompi/mca/bml/bml.h"
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#include "ompi/mca/btl/btl.h"
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#include "pml_dr_comm.h"
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#include "pml_dr_hdr.h"
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#include "pml_dr_vfrag.h"
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#include "pml_dr_endpoint.h"
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#include "opal/mca/event/event.h"
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BEGIN_C_DECLS
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struct mca_pml_dr_send_request_t {
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mca_pml_base_send_request_t req_send;
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mca_pml_dr_comm_proc_t* req_proc;
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mca_pml_dr_endpoint_t* req_endpoint;
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#if OPAL_HAVE_THREAD_SUPPORT
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volatile int32_t req_state;
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volatile int32_t req_lock;
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#else
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int32_t req_state;
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int32_t req_lock;
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#endif
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size_t req_pipeline_depth;
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size_t req_bytes_delivered;
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size_t req_send_offset;
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mca_pml_dr_vfrag_t* req_vfrag;
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mca_pml_dr_vfrag_t req_vfrag0;
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opal_list_t req_retrans;
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mca_btl_base_descriptor_t* req_descriptor; /* descriptor for first frag, retransmission */
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};
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typedef struct mca_pml_dr_send_request_t mca_pml_dr_send_request_t;
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OBJ_CLASS_DECLARATION(mca_pml_dr_send_request_t);
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#define MCA_PML_DR_SEND_REQUEST_ALLOC( \
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comm, \
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dst, \
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sendreq, \
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rc) \
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{ \
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ompi_proc_t *proc = ompi_comm_peer_lookup( comm, dst ); \
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ompi_free_list_item_t* item; \
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\
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if(NULL == proc) { \
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rc = OMPI_ERR_OUT_OF_RESOURCE; \
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} else { \
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rc = OMPI_SUCCESS; \
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OMPI_FREE_LIST_WAIT(&mca_pml_base_send_requests, item, rc); \
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sendreq = (mca_pml_dr_send_request_t*)item; \
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sendreq->req_send.req_base.req_proc = proc; \
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opal_list_append(&mca_pml_dr.send_active, \
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(opal_list_item_t*) sendreq); \
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} \
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}
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#define MCA_PML_DR_SEND_REQUEST_INIT( \
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sendreq, \
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addr, \
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count, \
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datatype, \
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peer, \
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tag, \
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comm, \
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sendmode, \
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persistent) \
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do { \
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mca_bml_base_endpoint_t* endpoint = \
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sendreq->req_send.req_base.req_proc->proc_bml; \
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bool do_csum = mca_pml_dr.enable_csum && \
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(endpoint->btl_flags_or & MCA_BTL_FLAGS_NEED_CSUM); \
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/* increment reference counts */ \
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OBJ_RETAIN(comm); \
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OBJ_RETAIN(datatype); \
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\
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OMPI_REQUEST_INIT(&(sendreq)->req_send.req_base.req_ompi, persistent); \
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(sendreq)->req_send.req_addr = addr; \
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(sendreq)->req_send.req_send_mode = sendmode; \
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(sendreq)->req_send.req_base.req_addr = addr; \
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(sendreq)->req_send.req_base.req_count = count; \
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(sendreq)->req_send.req_base.req_datatype = datatype; \
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(sendreq)->req_send.req_base.req_peer = (int32_t)peer; \
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(sendreq)->req_send.req_base.req_tag = (int32_t)tag; \
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(sendreq)->req_send.req_base.req_comm = comm; \
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(sendreq)->req_send.req_base.req_pml_complete = OPAL_INT_TO_BOOL(persistent); \
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(sendreq)->req_send.req_base.req_free_called = false; \
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(sendreq)->req_send.req_base.req_ompi.req_status._cancelled = 0; \
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\
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/* initialize datatype convertor for this request */ \
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/* if(count > 0) { */ \
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/* We will create a convertor specialized for the */ \
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/* remote architecture and prepared with the datatype. */ \
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opal_convertor_copy_and_prepare_for_send( \
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(sendreq)->req_send.req_base.req_proc->proc_convertor, \
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&((sendreq)->req_send.req_base.req_datatype->super), \
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(sendreq)->req_send.req_base.req_count, \
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(sendreq)->req_send.req_base.req_addr, \
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(do_csum ? CONVERTOR_WITH_CHECKSUM: 0), \
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&(sendreq)->req_send.req_base.req_convertor ); \
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opal_convertor_get_packed_size(&(sendreq)->req_send.req_base.req_convertor, \
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&((sendreq)->req_send.req_bytes_packed) ); \
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/* } else { */ \
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/* (sendreq)->req_send.req_bytes_packed = 0; */ \
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/* } */ \
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} while(0)
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#define MCA_PML_DR_SEND_REQUEST_START(sendreq, rc) \
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do { \
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mca_pml_dr_comm_t* comm = sendreq->req_send.req_base.req_comm->c_pml_comm; \
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mca_pml_dr_endpoint_t* pml_endpoint = \
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(mca_pml_dr_endpoint_t*)sendreq->req_send.req_base.req_proc->proc_pml; \
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mca_bml_base_endpoint_t* bml_endpoint = \
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sendreq->req_send.req_base.req_proc->proc_bml; \
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mca_pml_dr_comm_proc_t* proc = \
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comm->procs + sendreq->req_send.req_base.req_peer; \
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mca_bml_base_btl_t* bml_btl; \
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size_t size = sendreq->req_send.req_bytes_packed; \
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size_t eager_limit; \
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if(pml_endpoint == NULL || bml_endpoint == NULL) { \
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rc = OMPI_ERR_UNREACH; \
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break; \
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} \
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\
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bml_btl = mca_bml_base_btl_array_get_next(&bml_endpoint->btl_eager); \
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MCA_PML_DR_VFRAG_INIT(&sendreq->req_vfrag0); \
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sendreq->req_vfrag0.vf_id = OPAL_THREAD_ADD32(&pml_endpoint->vfrag_seq,1); \
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sendreq->req_vfrag0.bml_btl = bml_btl; \
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sendreq->req_vfrag = &sendreq->req_vfrag0; \
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sendreq->req_endpoint = pml_endpoint; \
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assert(pml_endpoint->bml_endpoint == bml_endpoint); \
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sendreq->req_proc = proc; \
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\
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sendreq->req_lock = 0; \
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sendreq->req_pipeline_depth = 1; \
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sendreq->req_bytes_delivered = 0; \
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sendreq->req_state = 0; \
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sendreq->req_send_offset = 0; \
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sendreq->req_send.req_base.req_pml_complete = false; \
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sendreq->req_send.req_base.req_ompi.req_complete = false; \
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sendreq->req_send.req_base.req_ompi.req_state = OMPI_REQUEST_ACTIVE; \
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sendreq->req_send.req_base.req_ompi.req_status._cancelled = 0; \
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sendreq->req_send.req_base.req_sequence = OPAL_THREAD_ADD32(&proc->send_sequence,1); \
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\
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/* select a btl */ \
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assert(bml_btl->btl->btl_eager_limit >= sizeof(mca_pml_dr_hdr_t)); \
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eager_limit = bml_btl->btl->btl_eager_limit - sizeof(mca_pml_dr_hdr_t); \
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if(size <= eager_limit) { \
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switch(sendreq->req_send.req_send_mode) { \
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case MCA_PML_BASE_SEND_SYNCHRONOUS: \
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rc = mca_pml_dr_send_request_start_rndv(sendreq, bml_btl, size, 0); \
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break; \
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case MCA_PML_BASE_SEND_BUFFERED: \
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rc = mca_pml_dr_send_request_start_copy(sendreq, bml_btl, size); \
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break; \
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case MCA_PML_BASE_SEND_COMPLETE: \
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rc = mca_pml_dr_send_request_start_prepare(sendreq, bml_btl, size); \
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break; \
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default: \
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if (bml_btl->btl_flags & MCA_BTL_FLAGS_SEND_INPLACE) { \
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rc = mca_pml_dr_send_request_start_prepare(sendreq, bml_btl, size); \
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} else { \
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rc = mca_pml_dr_send_request_start_copy(sendreq, bml_btl, size); \
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} \
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break; \
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} \
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} else { \
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size = eager_limit; \
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if(sendreq->req_send.req_send_mode == MCA_PML_BASE_SEND_BUFFERED) { \
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rc = mca_pml_dr_send_request_start_buffered(sendreq, bml_btl, size); \
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} else { \
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rc = mca_pml_dr_send_request_start_rndv(sendreq, bml_btl, size, 0); \
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} \
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} \
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} while (0)
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/*
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* Mark a send request as completed at the MPI level.
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*/
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#define MCA_PML_DR_SEND_REQUEST_MPI_COMPLETE(sendreq) \
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do { \
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(sendreq)->req_send.req_base.req_ompi.req_status.MPI_SOURCE = \
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(sendreq)->req_send.req_base.req_comm->c_my_rank; \
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(sendreq)->req_send.req_base.req_ompi.req_status.MPI_TAG = \
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(sendreq)->req_send.req_base.req_tag; \
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(sendreq)->req_send.req_base.req_ompi.req_status.MPI_ERROR = OMPI_SUCCESS; \
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(sendreq)->req_send.req_base.req_ompi.req_status._ucount = \
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(sendreq)->req_send.req_bytes_packed; \
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ompi_request_complete( &((sendreq)->req_send.req_base.req_ompi), true ); \
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} while(0)
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/*
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* The request fini is responsible for releasing all ressources at the PML
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* level. It will never be called directly from the upper level, as it should
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* only be an internal call to the PML. However, in the case when the user
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* already lost the MPI reference to the request (MPI_Request_free was called)
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* fini should completely free the MPI request.
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*/
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#define MCA_PML_DR_SEND_REQUEST_PML_COMPLETE(sendreq) \
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do { \
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assert( false == sendreq->req_send.req_base.req_pml_complete ); \
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opal_list_remove_item(&mca_pml_dr.send_active, \
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(opal_list_item_t*) sendreq); \
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if (sendreq->req_send.req_send_mode == MCA_PML_BASE_SEND_BUFFERED && \
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sendreq->req_send.req_addr != sendreq->req_send.req_base.req_addr) { \
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mca_pml_base_bsend_request_fini((ompi_request_t*)sendreq); \
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} \
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\
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if( false == sendreq->req_send.req_base.req_ompi.req_complete ) { \
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/* Should only be called for long messages (maybe synchronous) */ \
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MCA_PML_DR_SEND_REQUEST_MPI_COMPLETE(sendreq); \
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} \
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sendreq->req_send.req_base.req_pml_complete = true; \
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\
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if( sendreq->req_send.req_base.req_free_called ) { \
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MCA_PML_DR_SEND_REQUEST_RETURN( sendreq ); \
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} else { \
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if(sendreq->req_send.req_base.req_ompi.req_persistent && \
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(0 != sendreq->req_send.req_bytes_packed) ) { \
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/* rewind convertor */ \
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size_t offset = 0; \
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opal_convertor_set_position(&sendreq->req_send.req_base.req_convertor, \
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&offset); \
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} \
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} \
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} while (0)
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/*
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* Release resources associated with a request
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*/
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#define MCA_PML_DR_SEND_REQUEST_RETURN(sendreq) \
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do { \
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/* Let the base handle the reference counts */ \
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MCA_PML_BASE_SEND_REQUEST_FINI((&(sendreq)->req_send)); \
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OMPI_FREE_LIST_RETURN( &mca_pml_base_send_requests, \
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(ompi_free_list_item_t*)sendreq ); \
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} while(0)
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/*
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* Lookup/allocate a vfrag for the pending send
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*/
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#define MCA_PML_DR_SEND_REQUEST_VFRAG_INIT(sendreq, pml_endpoint, size, vfrag) \
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do { \
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size_t max_send_size = pml_endpoint->bml_endpoint->btl_max_send_size - \
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sizeof(mca_pml_dr_frag_hdr_t); \
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size_t div = size / max_send_size; \
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\
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MCA_PML_DR_VFRAG_INIT(vfrag); \
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if(div == 0) { \
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vfrag->vf_len = 1; \
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vfrag->vf_size = size; \
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vfrag->vf_mask = 1; \
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} else if(div > 64) { \
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vfrag->vf_len = 64; \
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vfrag->vf_size = (max_send_size << 6); /* size * 64 */ \
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vfrag->vf_mask = ~(uint64_t)0; \
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} else if (div == 64) { \
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size_t mod = size % max_send_size; \
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vfrag->vf_len = 64; \
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vfrag->vf_size = (mod ? (size - mod) : size); \
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vfrag->vf_mask = ~(uint64_t)0; \
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} else { \
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size_t mod = size % max_send_size; \
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vfrag->vf_len = div + (mod ? 1 : 0); \
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vfrag->vf_size = size; \
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if(vfrag->vf_len == 64) \
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vfrag->vf_mask = ~(uint64_t)0; \
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else \
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vfrag->vf_mask = (((uint64_t)1 << vfrag->vf_len) - (uint64_t)1); \
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} \
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vfrag->vf_id = OPAL_THREAD_ADD32(&pml_endpoint->vfrag_seq,1); \
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vfrag->vf_offset = sendreq->req_send_offset; \
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vfrag->vf_max_send_size = max_send_size; \
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vfrag->vf_send.pval = sendreq; \
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sendreq->req_vfrag = vfrag; \
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} while(0)
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/*
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* Reschedule unacked fragments
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*/
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#define MCA_PML_DR_SEND_REQUEST_VFRAG_RETRANS(sendreq, vfrag) \
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do { \
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if(((vfrag)->vf_state & MCA_PML_DR_VFRAG_RETRANS) == 0) { \
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opal_list_append(&(sendreq)->req_retrans, (opal_list_item_t*)(vfrag));\
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(vfrag)->vf_state |= MCA_PML_DR_VFRAG_RETRANS; \
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} \
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(vfrag)->vf_state &= ~MCA_PML_DR_VFRAG_NACKED; \
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(vfrag)->vf_idx = 0; \
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} while(0)
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/*
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* Update bytes delivered on request based on supplied descriptor
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*/
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#define MCA_PML_DR_SEND_REQUEST_SET_BYTES_DELIVERED(sendreq, vfrag, hdrlen) \
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do { \
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sendreq->req_bytes_delivered += vfrag->vf_size; \
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} while(0)
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/*
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* Attempt to process any pending requests
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*/
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#define MCA_PML_DR_SEND_REQUEST_PROCESS_PENDING() \
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do { \
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/* advance pending requests */ \
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while(opal_list_get_size(&mca_pml_dr.send_pending)) { \
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mca_pml_dr_send_request_t* sendreq; \
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OPAL_THREAD_LOCK(&ompi_request_lock); \
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sendreq = (mca_pml_dr_send_request_t*) \
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opal_list_remove_first(&mca_pml_dr.send_pending); \
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OPAL_THREAD_UNLOCK(&ompi_request_lock); \
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if(NULL == sendreq) \
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break; \
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opal_list_append(&mca_pml_dr.send_active, \
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(opal_list_item_t*) sendreq); \
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mca_pml_dr_send_request_schedule(sendreq); \
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} \
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} while (0)
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/*
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* Requeue first fragment of message for retransmission
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*/
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#define MCA_PML_DR_SEND_REQUEST_EAGER_RETRY(sendreq, vfrag) \
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do { \
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mca_btl_base_descriptor_t *des_old, *des_new; \
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OPAL_THREAD_ADD64(&vfrag->vf_pending,1); \
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MCA_PML_DR_DEBUG(0, \
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(0, "%s:%d:%s: retransmitting eager\n", \
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__FILE__, __LINE__, __func__)); \
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assert(sendreq->req_descriptor->des_src != NULL); \
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\
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OPAL_THREAD_ADD_SIZE_T(&sendreq->req_pipeline_depth,1); \
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OPAL_THREAD_ADD64(&(vfrag)->vf_pending,1); \
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(vfrag)->vf_state &= ~MCA_PML_DR_VFRAG_NACKED; \
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\
|
|
des_old = sendreq->req_descriptor; \
|
|
mca_bml_base_alloc(vfrag->bml_btl, &des_new, \
|
|
MCA_BTL_NO_ORDER, des_old->des_src->seg_len, \
|
|
des_old->des_flags); \
|
|
sendreq->req_descriptor = des_new; \
|
|
memcpy(des_new->des_src->seg_addr.pval, \
|
|
des_old->des_src->seg_addr.pval, \
|
|
des_old->des_src->seg_len); \
|
|
des_new->des_flags = des_old->des_flags; \
|
|
des_new->des_cbdata = des_old->des_cbdata; \
|
|
des_new->des_cbfunc = des_old->des_cbfunc; \
|
|
mca_bml_base_send(vfrag->bml_btl, des_new, MCA_BTL_TAG_PML); \
|
|
} while(0)
|
|
|
|
/*
|
|
* Requeue first fragment of message for retransmission
|
|
*/
|
|
|
|
#define MCA_PML_DR_SEND_REQUEST_RNDV_PROBE(sendreq, vfrag) \
|
|
do { \
|
|
mca_pml_dr_endpoint_t* endpoint = sendreq->req_endpoint; \
|
|
mca_bml_base_btl_t* bml_btl = \
|
|
mca_bml_base_btl_array_get_next(&endpoint->bml_endpoint->btl_eager); \
|
|
mca_btl_base_descriptor_t *des_old, *des_new; \
|
|
mca_pml_dr_hdr_t *hdr; \
|
|
bool do_csum = mca_pml_dr.enable_csum && \
|
|
(bml_btl->btl_flags & MCA_BTL_FLAGS_NEED_CSUM); \
|
|
MCA_PML_DR_DEBUG(0,(0, "%s:%d:%s: (re)transmitting rndv probe\n", \
|
|
__FILE__, __LINE__, __func__)); \
|
|
OPAL_THREAD_ADD_SIZE_T(&sendreq->req_pipeline_depth,1); \
|
|
OPAL_THREAD_ADD64(&vfrag->vf_pending,1); \
|
|
(vfrag)->vf_state &= ~MCA_PML_DR_VFRAG_NACKED; \
|
|
\
|
|
assert(sendreq->req_descriptor->des_src != NULL); \
|
|
des_old = sendreq->req_descriptor; \
|
|
mca_bml_base_alloc(bml_btl, &des_new, \
|
|
MCA_BTL_NO_ORDER, \
|
|
sizeof(mca_pml_dr_rendezvous_hdr_t), \
|
|
des_old->des_flags); \
|
|
/* build hdr */ \
|
|
hdr = (mca_pml_dr_hdr_t*)des_new->des_src->seg_addr.pval; \
|
|
hdr->hdr_common.hdr_flags = 0; \
|
|
hdr->hdr_common.hdr_type = MCA_PML_DR_HDR_TYPE_RNDV; \
|
|
hdr->hdr_common.hdr_dst = endpoint->dst; \
|
|
hdr->hdr_common.hdr_ctx = sendreq->req_send.req_base.req_comm->c_contextid; \
|
|
hdr->hdr_common.hdr_src = endpoint->src; \
|
|
hdr->hdr_match.hdr_tag = sendreq->req_send.req_base.req_tag; \
|
|
hdr->hdr_match.hdr_seq = sendreq->req_send.req_base.req_sequence; \
|
|
hdr->hdr_match.hdr_src_ptr.pval = &sendreq->req_vfrag0; \
|
|
hdr->hdr_match.hdr_csum = OPAL_CSUM_ZERO; \
|
|
hdr->hdr_common.hdr_vid = sendreq->req_vfrag0.vf_id; \
|
|
hdr->hdr_rndv.hdr_msg_length = sendreq->req_send.req_bytes_packed; \
|
|
hdr->hdr_common.hdr_csum = (do_csum ? \
|
|
opal_csum(hdr, sizeof(mca_pml_dr_rendezvous_hdr_t)): OPAL_CSUM_ZERO); \
|
|
des_new->des_flags = des_old->des_flags; \
|
|
des_new->des_cbdata = des_old->des_cbdata; \
|
|
des_new->des_cbfunc = des_old->des_cbfunc; \
|
|
mca_bml_base_send(bml_btl, des_new, MCA_BTL_TAG_PML); \
|
|
} while(0)
|
|
|
|
/**
|
|
* Start the specified request
|
|
*/
|
|
|
|
int mca_pml_dr_send_request_start_buffered(
|
|
mca_pml_dr_send_request_t* sendreq,
|
|
mca_bml_base_btl_t* bml_btl,
|
|
size_t size);
|
|
|
|
int mca_pml_dr_send_request_start_copy(
|
|
mca_pml_dr_send_request_t* sendreq,
|
|
mca_bml_base_btl_t* bml_btl,
|
|
size_t size);
|
|
|
|
int mca_pml_dr_send_request_start_prepare(
|
|
mca_pml_dr_send_request_t* sendreq,
|
|
mca_bml_base_btl_t* bml_btl,
|
|
size_t size);
|
|
|
|
int mca_pml_dr_send_request_start_rndv(
|
|
mca_pml_dr_send_request_t* sendreq,
|
|
mca_bml_base_btl_t* bml_btl,
|
|
size_t size,
|
|
int flags);
|
|
|
|
/**
|
|
* Schedule additional fragments
|
|
*/
|
|
int mca_pml_dr_send_request_schedule(
|
|
mca_pml_dr_send_request_t* sendreq);
|
|
|
|
int mca_pml_dr_send_request_reschedule(
|
|
mca_pml_dr_send_request_t* sendreq,
|
|
mca_pml_dr_vfrag_t* vfrag);
|
|
|
|
/**
|
|
* Acknowledgment of vfrags
|
|
*/
|
|
void mca_pml_dr_send_request_match_ack(
|
|
mca_btl_base_module_t* btl,
|
|
mca_pml_dr_ack_hdr_t*);
|
|
|
|
void mca_pml_dr_send_request_rndv_ack(
|
|
mca_btl_base_module_t* btl,
|
|
mca_pml_dr_ack_hdr_t*);
|
|
|
|
void mca_pml_dr_send_request_frag_ack(
|
|
mca_btl_base_module_t* btl,
|
|
mca_pml_dr_ack_hdr_t*);
|
|
|
|
void mca_pml_dr_sendreq_cleanup_active(mca_btl_base_module_t* btl);
|
|
|
|
|
|
END_C_DECLS
|
|
#endif
|
|
|