1231 строка
46 KiB
C
1231 строка
46 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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/*
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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) 2004-2013 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) 2004-2008 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 2008 UT-Battelle, LLC. All rights reserved.
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* Copyright (c) 2010 Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2012 NVIDIA Corporation. All rights reserved.
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* Copyright (c) 2012 Los Alamos National Security, LLC. All rights
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* 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/prefetch.h"
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#include "opal/mca/mpool/mpool.h"
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#include "ompi/constants.h"
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#include "ompi/mca/pml/pml.h"
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#include "pml_ob1.h"
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#include "pml_ob1_hdr.h"
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#include "pml_ob1_sendreq.h"
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#include "pml_ob1_rdmafrag.h"
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#include "pml_ob1_recvreq.h"
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#include "ompi/mca/bml/base/base.h"
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#include "ompi/memchecker.h"
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OBJ_CLASS_INSTANCE(mca_pml_ob1_send_range_t, ompi_free_list_item_t,
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NULL, NULL);
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void mca_pml_ob1_send_request_process_pending(mca_bml_base_btl_t *bml_btl)
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{
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int rc, i, s = opal_list_get_size(&mca_pml_ob1.send_pending);
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/* advance pending requests */
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for(i = 0; i < s; i++) {
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mca_pml_ob1_send_pending_t pending_type = MCA_PML_OB1_SEND_PENDING_NONE;
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mca_pml_ob1_send_request_t* sendreq;
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mca_bml_base_btl_t *send_dst;
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sendreq = get_request_from_send_pending(&pending_type);
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if(OPAL_UNLIKELY(NULL == sendreq))
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break;
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switch(pending_type) {
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case MCA_PML_OB1_SEND_PENDING_SCHEDULE:
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rc = mca_pml_ob1_send_request_schedule_exclusive(sendreq);
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if(OMPI_ERR_OUT_OF_RESOURCE == rc) {
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return;
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}
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break;
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case MCA_PML_OB1_SEND_PENDING_START:
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send_dst = mca_bml_base_btl_array_find(
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&sendreq->req_endpoint->btl_eager, bml_btl->btl);
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if (NULL == send_dst) {
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/* Put request back onto pending list and try next one. */
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add_request_to_send_pending(sendreq,
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MCA_PML_OB1_SEND_PENDING_START, true);
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} else {
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MCA_PML_OB1_SEND_REQUEST_RESET(sendreq);
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rc = mca_pml_ob1_send_request_start_btl(sendreq, send_dst);
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if (OMPI_ERR_OUT_OF_RESOURCE == rc) {
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/* No more resources on this btl so prepend to the pending
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* list to minimize reordering and give up for now. */
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add_request_to_send_pending(sendreq,
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MCA_PML_OB1_SEND_PENDING_START, false);
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return;
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}
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}
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break;
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default:
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opal_output(0, "[%s:%d] wrong send request type\n",
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__FILE__, __LINE__);
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break;
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}
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}
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}
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/*
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* The free call mark the final stage in a request life-cycle. Starting from this
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* point the request is completed at both PML and user level, and can be used
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* for others p2p communications. Therefore, in the case of the OB1 PML it should
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* be added to the free request list.
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*/
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static int mca_pml_ob1_send_request_free(struct ompi_request_t** request)
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{
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mca_pml_ob1_send_request_t* sendreq = *(mca_pml_ob1_send_request_t**)request;
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assert( false == sendreq->req_send.req_base.req_free_called );
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OPAL_THREAD_LOCK(&ompi_request_lock);
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sendreq->req_send.req_base.req_free_called = true;
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PERUSE_TRACE_COMM_EVENT( PERUSE_COMM_REQ_NOTIFY,
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&(sendreq->req_send.req_base), PERUSE_SEND );
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if( true == sendreq->req_send.req_base.req_pml_complete ) {
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/* make buffer defined when the request is compeleted,
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and before releasing the objects. */
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MEMCHECKER(
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memchecker_call(&opal_memchecker_base_mem_defined,
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sendreq->req_send.req_base.req_addr,
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sendreq->req_send.req_base.req_count,
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sendreq->req_send.req_base.req_datatype);
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);
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MCA_PML_OB1_SEND_REQUEST_RETURN( sendreq );
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}
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OPAL_THREAD_UNLOCK(&ompi_request_lock);
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*request = MPI_REQUEST_NULL;
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return OMPI_SUCCESS;
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}
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static int mca_pml_ob1_send_request_cancel(struct ompi_request_t* request, int complete)
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{
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/* we dont cancel send requests by now */
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return OMPI_SUCCESS;
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}
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static void mca_pml_ob1_send_request_construct(mca_pml_ob1_send_request_t* req)
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{
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req->req_send.req_base.req_type = MCA_PML_REQUEST_SEND;
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req->req_send.req_base.req_ompi.req_free = mca_pml_ob1_send_request_free;
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req->req_send.req_base.req_ompi.req_cancel = mca_pml_ob1_send_request_cancel;
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req->req_rdma_cnt = 0;
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req->req_throttle_sends = false;
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OBJ_CONSTRUCT(&req->req_send_ranges, opal_list_t);
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OBJ_CONSTRUCT(&req->req_send_range_lock, opal_mutex_t);
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}
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static void mca_pml_ob1_send_request_destruct(mca_pml_ob1_send_request_t* req)
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{
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OBJ_DESTRUCT(&req->req_send_ranges);
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OBJ_DESTRUCT(&req->req_send_range_lock);
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}
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OBJ_CLASS_INSTANCE( mca_pml_ob1_send_request_t,
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mca_pml_base_send_request_t,
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mca_pml_ob1_send_request_construct,
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mca_pml_ob1_send_request_destruct );
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/**
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* Completion of a short message - nothing left to schedule.
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*/
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static inline void
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mca_pml_ob1_match_completion_free_request( mca_bml_base_btl_t* bml_btl,
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mca_pml_ob1_send_request_t* sendreq )
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{
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if( sendreq->req_send.req_bytes_packed > 0 ) {
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PERUSE_TRACE_COMM_EVENT( PERUSE_COMM_REQ_XFER_BEGIN,
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&(sendreq->req_send.req_base), PERUSE_SEND );
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}
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/* signal request completion */
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send_request_pml_complete(sendreq);
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/* check for pending requests */
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MCA_PML_OB1_PROGRESS_PENDING(bml_btl);
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}
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static void
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mca_pml_ob1_match_completion_free( struct mca_btl_base_module_t* btl,
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struct mca_btl_base_endpoint_t* ep,
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struct mca_btl_base_descriptor_t* des,
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int status )
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{
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mca_pml_ob1_send_request_t* sendreq = (mca_pml_ob1_send_request_t*)des->des_cbdata;
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mca_bml_base_btl_t* bml_btl = (mca_bml_base_btl_t*) des->des_context;
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/* check completion status */
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if( OPAL_UNLIKELY(OMPI_SUCCESS != status) ) {
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/* TSW - FIX */
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opal_output(0, "%s:%d FATAL", __FILE__, __LINE__);
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ompi_rte_abort(-1, NULL);
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}
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mca_pml_ob1_match_completion_free_request( bml_btl, sendreq );
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}
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static inline void
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mca_pml_ob1_rndv_completion_request( mca_bml_base_btl_t* bml_btl,
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mca_pml_ob1_send_request_t* sendreq,
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size_t req_bytes_delivered )
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{
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if( sendreq->req_send.req_bytes_packed > 0 ) {
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PERUSE_TRACE_COMM_EVENT( PERUSE_COMM_REQ_XFER_BEGIN,
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&(sendreq->req_send.req_base), PERUSE_SEND );
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}
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OPAL_THREAD_ADD_SIZE_T(&sendreq->req_bytes_delivered, req_bytes_delivered);
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/* advance the request */
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OPAL_THREAD_ADD32(&sendreq->req_state, -1);
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send_request_pml_complete_check(sendreq);
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/* check for pending requests */
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MCA_PML_OB1_PROGRESS_PENDING(bml_btl);
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}
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/*
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* Completion of the first fragment of a long message that
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* requires an acknowledgement
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*/
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static void
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mca_pml_ob1_rndv_completion( mca_btl_base_module_t* btl,
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struct mca_btl_base_endpoint_t* ep,
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struct mca_btl_base_descriptor_t* des,
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int status )
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{
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mca_pml_ob1_send_request_t* sendreq = (mca_pml_ob1_send_request_t*)des->des_cbdata;
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mca_bml_base_btl_t* bml_btl = (mca_bml_base_btl_t*)des->des_context;
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size_t req_bytes_delivered;
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/* check completion status */
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if( OPAL_UNLIKELY(OMPI_SUCCESS != status) ) {
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/* TSW - FIX */
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opal_output(0, "%s:%d FATAL", __FILE__, __LINE__);
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ompi_rte_abort(-1, NULL);
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}
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/* count bytes of user data actually delivered. As the rndv completion only
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* happens in one thread, the increase of the req_bytes_delivered does not
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* have to be atomic.
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*/
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req_bytes_delivered = mca_pml_ob1_compute_segment_length_base ((void *) des->des_segments,
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des->des_segment_count,
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sizeof(mca_pml_ob1_rendezvous_hdr_t));
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mca_pml_ob1_rndv_completion_request( bml_btl, sendreq, req_bytes_delivered );
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}
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/**
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* Completion of a get request.
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*/
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static void
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mca_pml_ob1_rget_completion (mca_pml_ob1_rdma_frag_t *frag, int64_t rdma_length)
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{
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mca_pml_ob1_send_request_t *sendreq = (mca_pml_ob1_send_request_t *) frag->rdma_req;
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mca_bml_base_btl_t *bml_btl = frag->rdma_bml;
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/* count bytes of user data actually delivered and check for request completion */
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if (OPAL_LIKELY(0 < rdma_length)) {
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OPAL_THREAD_ADD_SIZE_T(&sendreq->req_bytes_delivered, (size_t) rdma_length);
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}
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send_request_pml_complete_check(sendreq);
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MCA_PML_OB1_PROGRESS_PENDING(bml_btl);
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}
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/**
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* Completion of a control message - return resources.
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*/
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static void
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mca_pml_ob1_send_ctl_completion( mca_btl_base_module_t* btl,
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struct mca_btl_base_endpoint_t* ep,
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struct mca_btl_base_descriptor_t* des,
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int status )
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{
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mca_bml_base_btl_t* bml_btl = (mca_bml_base_btl_t*) des->des_context;
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/* check for pending requests */
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MCA_PML_OB1_PROGRESS_PENDING(bml_btl);
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}
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/**
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* Completion of additional fragments of a large message - may need
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* to schedule additional fragments.
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*/
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static void
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mca_pml_ob1_frag_completion( mca_btl_base_module_t* btl,
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struct mca_btl_base_endpoint_t* ep,
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struct mca_btl_base_descriptor_t* des,
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int status )
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{
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mca_pml_ob1_send_request_t* sendreq = (mca_pml_ob1_send_request_t*)des->des_cbdata;
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mca_bml_base_btl_t* bml_btl = (mca_bml_base_btl_t*) des->des_context;
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size_t req_bytes_delivered;
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/* check completion status */
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if( OPAL_UNLIKELY(OMPI_SUCCESS != status) ) {
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/* TSW - FIX */
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opal_output(0, "%s:%d FATAL", __FILE__, __LINE__);
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ompi_rte_abort(-1, NULL);
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}
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/* count bytes of user data actually delivered */
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req_bytes_delivered = mca_pml_ob1_compute_segment_length_base ((void *) des->des_segments,
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des->des_segment_count,
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sizeof(mca_pml_ob1_frag_hdr_t));
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OPAL_THREAD_ADD_SIZE_T(&sendreq->req_pipeline_depth, -1);
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OPAL_THREAD_ADD_SIZE_T(&sendreq->req_bytes_delivered, req_bytes_delivered);
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if(send_request_pml_complete_check(sendreq) == false) {
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mca_pml_ob1_send_request_schedule(sendreq);
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}
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/* check for pending requests */
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MCA_PML_OB1_PROGRESS_PENDING(bml_btl);
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}
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#if OPAL_CUDA_SUPPORT /* CUDA_ASYNC_SEND */
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/**
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* This function is called when the copy of the frag from the GPU buffer
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* to the internal buffer is complete. Used to support asynchronous
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* copies from GPU to host buffers. Now the data can be sent.
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*/
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static void
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mca_pml_ob1_copy_frag_completion( mca_btl_base_module_t* btl,
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struct mca_btl_base_endpoint_t* ep,
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struct mca_btl_base_descriptor_t* des,
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int status )
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{
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int rc;
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mca_bml_base_btl_t* bml_btl = (mca_bml_base_btl_t*) des->des_context;
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des->des_cbfunc = mca_pml_ob1_frag_completion;
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/* Reset the BTL onwership flag as the BTL can free it after completion. */
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des->des_flags |= MCA_BTL_DES_FLAGS_BTL_OWNERSHIP;
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OPAL_OUTPUT((-1, "copy_frag_completion FRAG frag=%p", (void *)des));
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/* Currently, we cannot support a failure in the send. In the blocking
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* case, the counters tracking the fragments being sent are not adjusted
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* until the function returns success, so it handles the error by leaving
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* all the buffer counters intact. In this case, it is too late so
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* we just abort. In theory, a new queue could be created to hold this
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* fragment and then attempt to send it out on another BTL. */
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rc = mca_bml_base_send(bml_btl, des, MCA_PML_OB1_HDR_TYPE_FRAG);
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if(OPAL_UNLIKELY(rc < 0)) {
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opal_output(0, "%s:%d FATAL", __FILE__, __LINE__);
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ompi_rte_abort(-1, NULL);
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}
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}
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#endif /* OPAL_CUDA_SUPPORT */
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/**
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* Buffer the entire message and mark as complete.
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*/
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int mca_pml_ob1_send_request_start_buffered(
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mca_pml_ob1_send_request_t* sendreq,
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mca_bml_base_btl_t* bml_btl,
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size_t size)
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{
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mca_btl_base_descriptor_t* des;
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mca_btl_base_segment_t* segment;
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mca_pml_ob1_hdr_t* hdr;
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struct iovec iov;
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unsigned int iov_count;
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size_t max_data, req_bytes_delivered;
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int rc;
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/* allocate descriptor */
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mca_bml_base_alloc(bml_btl, &des,
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MCA_BTL_NO_ORDER,
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sizeof(mca_pml_ob1_rendezvous_hdr_t) + size,
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MCA_BTL_DES_FLAGS_PRIORITY | MCA_BTL_DES_FLAGS_BTL_OWNERSHIP);
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if( OPAL_UNLIKELY(NULL == des) ) {
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return OMPI_ERR_OUT_OF_RESOURCE;
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}
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segment = des->des_segments;
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/* pack the data into the BTL supplied buffer */
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iov.iov_base = (IOVBASE_TYPE*)((unsigned char*)segment->seg_addr.pval +
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sizeof(mca_pml_ob1_rendezvous_hdr_t));
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iov.iov_len = size;
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iov_count = 1;
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max_data = size;
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if((rc = opal_convertor_pack( &sendreq->req_send.req_base.req_convertor,
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&iov,
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&iov_count,
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&max_data)) < 0) {
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mca_bml_base_free(bml_btl, des);
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return rc;
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}
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req_bytes_delivered = max_data;
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/* build rendezvous header */
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hdr = (mca_pml_ob1_hdr_t*)segment->seg_addr.pval;
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mca_pml_ob1_rendezvous_hdr_prepare (&hdr->hdr_rndv, MCA_PML_OB1_HDR_TYPE_RNDV, 0,
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sendreq->req_send.req_base.req_comm->c_contextid,
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sendreq->req_send.req_base.req_comm->c_my_rank,
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sendreq->req_send.req_base.req_tag,
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(uint16_t)sendreq->req_send.req_base.req_sequence,
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sendreq->req_send.req_bytes_packed, sendreq);
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ob1_hdr_hton(hdr, MCA_PML_OB1_HDR_TYPE_RNDV, sendreq->req_send.req_base.req_proc);
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/* update lengths */
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segment->seg_len = sizeof(mca_pml_ob1_rendezvous_hdr_t) + max_data;
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des->des_cbfunc = mca_pml_ob1_rndv_completion;
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des->des_cbdata = sendreq;
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/* buffer the remainder of the message */
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rc = mca_pml_base_bsend_request_alloc((ompi_request_t*)sendreq);
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if( OPAL_UNLIKELY(OMPI_SUCCESS != rc) ) {
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mca_bml_base_free(bml_btl, des);
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return rc;
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}
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iov.iov_base = (IOVBASE_TYPE*)(((unsigned char*)sendreq->req_send.req_addr) + max_data);
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iov.iov_len = max_data = sendreq->req_send.req_bytes_packed - max_data;
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if((rc = opal_convertor_pack( &sendreq->req_send.req_base.req_convertor,
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&iov,
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&iov_count,
|
|
&max_data)) < 0) {
|
|
mca_bml_base_free(bml_btl, des);
|
|
return rc;
|
|
}
|
|
|
|
/* re-init convertor for packed data */
|
|
opal_convertor_prepare_for_send( &sendreq->req_send.req_base.req_convertor,
|
|
&(ompi_mpi_byte.dt.super),
|
|
sendreq->req_send.req_bytes_packed,
|
|
sendreq->req_send.req_addr );
|
|
|
|
/* wait for ack and completion */
|
|
sendreq->req_state = 2;
|
|
|
|
/* request is complete at mpi level */
|
|
OPAL_THREAD_LOCK(&ompi_request_lock);
|
|
MCA_PML_OB1_SEND_REQUEST_MPI_COMPLETE(sendreq, true);
|
|
OPAL_THREAD_UNLOCK(&ompi_request_lock);
|
|
|
|
/* send */
|
|
rc = mca_bml_base_send(bml_btl, des, MCA_PML_OB1_HDR_TYPE_RNDV);
|
|
if( OPAL_LIKELY( rc >= 0 ) ) {
|
|
if( OPAL_LIKELY( 1 == rc ) ) {
|
|
mca_pml_ob1_rndv_completion_request( bml_btl, sendreq, req_bytes_delivered);
|
|
}
|
|
return OMPI_SUCCESS;
|
|
}
|
|
mca_bml_base_free(bml_btl, des );
|
|
return rc;
|
|
}
|
|
|
|
|
|
/**
|
|
* We work on a buffered request with a size smaller than the eager size
|
|
* or the BTL is not able to send the data IN_PLACE. Request a segment
|
|
* that is used for initial hdr and any eager data. This is used only
|
|
* from the _START macro.
|
|
*/
|
|
int mca_pml_ob1_send_request_start_copy( mca_pml_ob1_send_request_t* sendreq,
|
|
mca_bml_base_btl_t* bml_btl,
|
|
size_t size )
|
|
{
|
|
mca_btl_base_descriptor_t* des = NULL;
|
|
mca_btl_base_segment_t* segment;
|
|
mca_pml_ob1_hdr_t* hdr;
|
|
struct iovec iov;
|
|
unsigned int iov_count;
|
|
size_t max_data = size;
|
|
int rc;
|
|
|
|
if(NULL != bml_btl->btl->btl_sendi) {
|
|
mca_pml_ob1_match_hdr_t match;
|
|
mca_pml_ob1_match_hdr_prepare (&match, MCA_PML_OB1_HDR_TYPE_MATCH, 0,
|
|
sendreq->req_send.req_base.req_comm->c_contextid,
|
|
sendreq->req_send.req_base.req_comm->c_my_rank,
|
|
sendreq->req_send.req_base.req_tag,
|
|
(uint16_t)sendreq->req_send.req_base.req_sequence);
|
|
|
|
ob1_hdr_hton (&match, MCA_PML_OB1_HDR_TYPE_MATCH, sendreq->req_send.req_base.req_proc);
|
|
|
|
/* try to send immediately */
|
|
rc = mca_bml_base_sendi( bml_btl, &sendreq->req_send.req_base.req_convertor,
|
|
&match, OMPI_PML_OB1_MATCH_HDR_LEN,
|
|
size, MCA_BTL_NO_ORDER,
|
|
MCA_BTL_DES_FLAGS_PRIORITY | MCA_BTL_DES_FLAGS_BTL_OWNERSHIP,
|
|
MCA_PML_OB1_HDR_TYPE_MATCH,
|
|
&des);
|
|
if( OPAL_LIKELY(OMPI_SUCCESS == rc) ) {
|
|
/* signal request completion */
|
|
send_request_pml_complete(sendreq);
|
|
|
|
/* check for pending requests */
|
|
MCA_PML_OB1_PROGRESS_PENDING(bml_btl);
|
|
return OMPI_SUCCESS;
|
|
}
|
|
|
|
/* just in case the btl changed the converter, reset it */
|
|
if (size > 0 && NULL != des) {
|
|
MCA_PML_OB1_SEND_REQUEST_RESET(sendreq);
|
|
}
|
|
} else {
|
|
/* allocate descriptor */
|
|
mca_bml_base_alloc( bml_btl, &des,
|
|
MCA_BTL_NO_ORDER,
|
|
OMPI_PML_OB1_MATCH_HDR_LEN + size,
|
|
MCA_BTL_DES_FLAGS_PRIORITY | MCA_BTL_DES_FLAGS_BTL_OWNERSHIP);
|
|
}
|
|
if( OPAL_UNLIKELY(NULL == des) ) {
|
|
return OMPI_ERR_OUT_OF_RESOURCE;
|
|
}
|
|
|
|
segment = des->des_segments;
|
|
|
|
if(size > 0) {
|
|
/* pack the data into the supplied buffer */
|
|
iov.iov_base = (IOVBASE_TYPE*)((unsigned char*)segment->seg_addr.pval +
|
|
OMPI_PML_OB1_MATCH_HDR_LEN);
|
|
iov.iov_len = size;
|
|
iov_count = 1;
|
|
/*
|
|
* Before copy the user buffer, make the target part
|
|
* accessible.
|
|
*/
|
|
MEMCHECKER(
|
|
memchecker_call(&opal_memchecker_base_mem_defined,
|
|
sendreq->req_send.req_base.req_addr,
|
|
sendreq->req_send.req_base.req_count,
|
|
sendreq->req_send.req_base.req_datatype);
|
|
);
|
|
(void)opal_convertor_pack( &sendreq->req_send.req_base.req_convertor,
|
|
&iov, &iov_count, &max_data );
|
|
/*
|
|
* Packing finished, make the user buffer unaccessable.
|
|
*/
|
|
MEMCHECKER(
|
|
memchecker_call(&opal_memchecker_base_mem_noaccess,
|
|
sendreq->req_send.req_base.req_addr,
|
|
sendreq->req_send.req_base.req_count,
|
|
sendreq->req_send.req_base.req_datatype);
|
|
);
|
|
}
|
|
|
|
|
|
/* build match header */
|
|
hdr = (mca_pml_ob1_hdr_t*)segment->seg_addr.pval;
|
|
mca_pml_ob1_match_hdr_prepare (&hdr->hdr_match, MCA_PML_OB1_HDR_TYPE_MATCH, 0,
|
|
sendreq->req_send.req_base.req_comm->c_contextid,
|
|
sendreq->req_send.req_base.req_comm->c_my_rank,
|
|
sendreq->req_send.req_base.req_tag,
|
|
(uint16_t)sendreq->req_send.req_base.req_sequence);
|
|
|
|
ob1_hdr_hton(hdr, MCA_PML_OB1_HDR_TYPE_MATCH, sendreq->req_send.req_base.req_proc);
|
|
|
|
/* update lengths */
|
|
segment->seg_len = OMPI_PML_OB1_MATCH_HDR_LEN + max_data;
|
|
|
|
/* short message */
|
|
des->des_cbdata = sendreq;
|
|
des->des_cbfunc = mca_pml_ob1_match_completion_free;
|
|
|
|
/* send */
|
|
rc = mca_bml_base_send_status(bml_btl, des, MCA_PML_OB1_HDR_TYPE_MATCH);
|
|
if( OPAL_LIKELY( rc >= OMPI_SUCCESS ) ) {
|
|
if( OPAL_LIKELY( 1 == rc ) ) {
|
|
mca_pml_ob1_match_completion_free_request( bml_btl, sendreq );
|
|
}
|
|
return OMPI_SUCCESS;
|
|
}
|
|
|
|
if (OMPI_ERR_RESOURCE_BUSY == rc) {
|
|
/* No more resources. Allow the upper level to queue the send */
|
|
rc = OMPI_ERR_OUT_OF_RESOURCE;
|
|
}
|
|
|
|
mca_bml_base_free (bml_btl, des);
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* BTL can send directly from user buffer so allow the BTL
|
|
* to prepare the segment list. Start sending a small message.
|
|
*/
|
|
|
|
int mca_pml_ob1_send_request_start_prepare( mca_pml_ob1_send_request_t* sendreq,
|
|
mca_bml_base_btl_t* bml_btl,
|
|
size_t size )
|
|
{
|
|
mca_btl_base_descriptor_t* des;
|
|
mca_btl_base_segment_t* segment;
|
|
mca_pml_ob1_hdr_t* hdr;
|
|
int rc;
|
|
|
|
/* prepare descriptor */
|
|
mca_bml_base_prepare_src( bml_btl,
|
|
NULL,
|
|
&sendreq->req_send.req_base.req_convertor,
|
|
MCA_BTL_NO_ORDER,
|
|
OMPI_PML_OB1_MATCH_HDR_LEN,
|
|
&size,
|
|
MCA_BTL_DES_FLAGS_PRIORITY | MCA_BTL_DES_FLAGS_BTL_OWNERSHIP,
|
|
&des );
|
|
if( OPAL_UNLIKELY(NULL == des) ) {
|
|
return OMPI_ERR_OUT_OF_RESOURCE;
|
|
}
|
|
segment = des->des_segments;
|
|
|
|
/* build match header */
|
|
hdr = (mca_pml_ob1_hdr_t*)segment->seg_addr.pval;
|
|
mca_pml_ob1_match_hdr_prepare (&hdr->hdr_match, MCA_PML_OB1_HDR_TYPE_MATCH, 0,
|
|
sendreq->req_send.req_base.req_comm->c_contextid,
|
|
sendreq->req_send.req_base.req_comm->c_my_rank,
|
|
sendreq->req_send.req_base.req_tag,
|
|
(uint16_t)sendreq->req_send.req_base.req_sequence);
|
|
|
|
ob1_hdr_hton(hdr, MCA_PML_OB1_HDR_TYPE_MATCH, sendreq->req_send.req_base.req_proc);
|
|
|
|
/* short message */
|
|
des->des_cbfunc = mca_pml_ob1_match_completion_free;
|
|
des->des_cbdata = sendreq;
|
|
|
|
/* send */
|
|
rc = mca_bml_base_send(bml_btl, des, MCA_PML_OB1_HDR_TYPE_MATCH);
|
|
if( OPAL_LIKELY( rc >= 0 ) ) {
|
|
if( OPAL_LIKELY( 1 == rc ) ) {
|
|
mca_pml_ob1_match_completion_free_request( bml_btl, sendreq );
|
|
}
|
|
return OMPI_SUCCESS;
|
|
}
|
|
mca_bml_base_free(bml_btl, des );
|
|
return rc;
|
|
}
|
|
|
|
|
|
/**
|
|
* We have contigous data that is registered - schedule across
|
|
* available nics.
|
|
*/
|
|
|
|
int mca_pml_ob1_send_request_start_rdma( mca_pml_ob1_send_request_t* sendreq,
|
|
mca_bml_base_btl_t* bml_btl,
|
|
size_t size )
|
|
{
|
|
/*
|
|
* When req_rdma array is constructed the first element of the array always
|
|
* assigned different btl in round robin fashion (if there are more than
|
|
* one RDMA capable BTLs). This way round robin distribution of RDMA
|
|
* operation is achieved.
|
|
*/
|
|
mca_btl_base_registration_handle_t *local_handle;
|
|
mca_btl_base_descriptor_t *des;
|
|
mca_pml_ob1_rdma_frag_t *frag;
|
|
mca_pml_ob1_rget_hdr_t *hdr;
|
|
size_t reg_size;
|
|
void *data_ptr;
|
|
int rc;
|
|
|
|
bml_btl = sendreq->req_rdma[0].bml_btl;
|
|
if (!(bml_btl->btl_flags & (MCA_BTL_FLAGS_GET | MCA_BTL_FLAGS_CUDA_GET))) {
|
|
sendreq->rdma_frag = NULL;
|
|
/* This BTL does not support get. Use rendezvous to start the RDMA operation using put instead. */
|
|
return mca_pml_ob1_send_request_start_rndv (sendreq, bml_btl, 0, MCA_PML_OB1_HDR_FLAGS_CONTIG |
|
|
MCA_PML_OB1_HDR_FLAGS_PIN);
|
|
}
|
|
|
|
/* at this time ob1 does not support non-contiguous gets. the convertor represents a
|
|
* contiguous block of memory */
|
|
opal_convertor_get_current_pointer (&sendreq->req_send.req_base.req_convertor, &data_ptr);
|
|
|
|
local_handle = sendreq->req_rdma[0].btl_reg;
|
|
|
|
/* allocate an rdma fragment to keep track of the request size for use in the fin message */
|
|
MCA_PML_OB1_RDMA_FRAG_ALLOC(frag);
|
|
if (OPAL_UNLIKELY(NULL == frag)) {
|
|
return OPAL_ERR_OUT_OF_RESOURCE;
|
|
}
|
|
|
|
/* fill in necessary fragment data */
|
|
frag->rdma_req = sendreq;
|
|
frag->rdma_bml = bml_btl;
|
|
frag->rdma_length = size;
|
|
frag->cbfunc = mca_pml_ob1_rget_completion;
|
|
/* do not store the local handle in the fragment. it will be released by mca_pml_ob1_free_rdma_resources */
|
|
|
|
/* save the fragment for get->put fallback */
|
|
sendreq->rdma_frag = frag;
|
|
|
|
reg_size = bml_btl->btl->btl_registration_handle_size;
|
|
|
|
/* allocate space for get hdr + segment list */
|
|
mca_bml_base_alloc(bml_btl, &des, MCA_BTL_NO_ORDER, sizeof (*hdr) + reg_size,
|
|
MCA_BTL_DES_FLAGS_PRIORITY | MCA_BTL_DES_FLAGS_BTL_OWNERSHIP);
|
|
if( OPAL_UNLIKELY(NULL == des) ) {
|
|
/* NTH: no need to reset the converter here. it will be reset before it is retried */
|
|
return OMPI_ERR_OUT_OF_RESOURCE;
|
|
}
|
|
|
|
/* build match header */
|
|
hdr = (mca_pml_ob1_rget_hdr_t *) des->des_segments->seg_addr.pval;
|
|
/* TODO -- Add support for multiple segments for get */
|
|
mca_pml_ob1_rget_hdr_prepare (hdr, MCA_PML_OB1_HDR_FLAGS_CONTIG | MCA_PML_OB1_HDR_FLAGS_PIN,
|
|
sendreq->req_send.req_base.req_comm->c_contextid,
|
|
sendreq->req_send.req_base.req_comm->c_my_rank,
|
|
sendreq->req_send.req_base.req_tag,
|
|
(uint16_t)sendreq->req_send.req_base.req_sequence,
|
|
sendreq->req_send.req_bytes_packed, sendreq,
|
|
frag, data_ptr, local_handle, reg_size);
|
|
|
|
ob1_hdr_hton(hdr, MCA_PML_OB1_HDR_TYPE_RGET, sendreq->req_send.req_base.req_proc);
|
|
|
|
des->des_cbfunc = mca_pml_ob1_send_ctl_completion;
|
|
des->des_cbdata = sendreq;
|
|
|
|
/**
|
|
* Well, it's a get so we will not know when the peer will get the data anyway.
|
|
* If we generate the PERUSE event here, at least we will know when we
|
|
* sent the GET message ...
|
|
*/
|
|
if( sendreq->req_send.req_bytes_packed > 0 ) {
|
|
PERUSE_TRACE_COMM_EVENT( PERUSE_COMM_REQ_XFER_BEGIN,
|
|
&(sendreq->req_send.req_base), PERUSE_SEND );
|
|
}
|
|
|
|
/* send */
|
|
rc = mca_bml_base_send(bml_btl, des, MCA_PML_OB1_HDR_TYPE_RGET);
|
|
if (OPAL_UNLIKELY(rc < 0)) {
|
|
mca_bml_base_free(bml_btl, des);
|
|
return rc;
|
|
}
|
|
|
|
return OMPI_SUCCESS;
|
|
}
|
|
|
|
|
|
/**
|
|
* Rendezvous is required. Not doing rdma so eager send up to
|
|
* the btls eager limit.
|
|
*/
|
|
|
|
int mca_pml_ob1_send_request_start_rndv( mca_pml_ob1_send_request_t* sendreq,
|
|
mca_bml_base_btl_t* bml_btl,
|
|
size_t size,
|
|
int flags )
|
|
{
|
|
mca_btl_base_descriptor_t* des;
|
|
mca_btl_base_segment_t* segment;
|
|
mca_pml_ob1_hdr_t* hdr;
|
|
int rc;
|
|
|
|
/* prepare descriptor */
|
|
if(size == 0) {
|
|
mca_bml_base_alloc( bml_btl,
|
|
&des,
|
|
MCA_BTL_NO_ORDER,
|
|
sizeof(mca_pml_ob1_rendezvous_hdr_t),
|
|
MCA_BTL_DES_FLAGS_PRIORITY | MCA_BTL_DES_FLAGS_BTL_OWNERSHIP );
|
|
} else {
|
|
MEMCHECKER(
|
|
memchecker_call(&opal_memchecker_base_mem_defined,
|
|
sendreq->req_send.req_base.req_addr,
|
|
sendreq->req_send.req_base.req_count,
|
|
sendreq->req_send.req_base.req_datatype);
|
|
);
|
|
mca_bml_base_prepare_src( bml_btl,
|
|
NULL,
|
|
&sendreq->req_send.req_base.req_convertor,
|
|
MCA_BTL_NO_ORDER,
|
|
sizeof(mca_pml_ob1_rendezvous_hdr_t),
|
|
&size,
|
|
MCA_BTL_DES_FLAGS_PRIORITY | MCA_BTL_DES_FLAGS_BTL_OWNERSHIP,
|
|
&des );
|
|
MEMCHECKER(
|
|
memchecker_call(&opal_memchecker_base_mem_noaccess,
|
|
sendreq->req_send.req_base.req_addr,
|
|
sendreq->req_send.req_base.req_count,
|
|
sendreq->req_send.req_base.req_datatype);
|
|
);
|
|
}
|
|
|
|
if( OPAL_UNLIKELY(NULL == des) ) {
|
|
return OMPI_ERR_OUT_OF_RESOURCE;
|
|
}
|
|
segment = des->des_segments;
|
|
|
|
/* build hdr */
|
|
hdr = (mca_pml_ob1_hdr_t*)segment->seg_addr.pval;
|
|
mca_pml_ob1_rendezvous_hdr_prepare (&hdr->hdr_rndv, MCA_PML_OB1_HDR_TYPE_RNDV, flags,
|
|
sendreq->req_send.req_base.req_comm->c_contextid,
|
|
sendreq->req_send.req_base.req_comm->c_my_rank,
|
|
sendreq->req_send.req_base.req_tag,
|
|
(uint16_t)sendreq->req_send.req_base.req_sequence,
|
|
sendreq->req_send.req_bytes_packed, sendreq);
|
|
|
|
ob1_hdr_hton(hdr, MCA_PML_OB1_HDR_TYPE_RNDV, sendreq->req_send.req_base.req_proc);
|
|
|
|
/* first fragment of a long message */
|
|
des->des_cbdata = sendreq;
|
|
des->des_cbfunc = mca_pml_ob1_rndv_completion;
|
|
|
|
/* wait for ack and completion */
|
|
sendreq->req_state = 2;
|
|
|
|
/* send */
|
|
rc = mca_bml_base_send(bml_btl, des, MCA_PML_OB1_HDR_TYPE_RNDV);
|
|
if( OPAL_LIKELY( rc >= 0 ) ) {
|
|
if( OPAL_LIKELY( 1 == rc ) ) {
|
|
mca_pml_ob1_rndv_completion_request( bml_btl, sendreq, size );
|
|
}
|
|
return OMPI_SUCCESS;
|
|
}
|
|
mca_bml_base_free(bml_btl, des );
|
|
return rc;
|
|
}
|
|
|
|
void mca_pml_ob1_send_request_copy_in_out( mca_pml_ob1_send_request_t *sendreq,
|
|
uint64_t send_offset,
|
|
uint64_t send_length )
|
|
{
|
|
mca_pml_ob1_send_range_t *sr;
|
|
ompi_free_list_item_t *i;
|
|
mca_bml_base_endpoint_t* bml_endpoint = sendreq->req_endpoint;
|
|
int num_btls = mca_bml_base_btl_array_get_size(&bml_endpoint->btl_send);
|
|
int n;
|
|
double weight_total = 0;
|
|
|
|
if( OPAL_UNLIKELY(0 == send_length) )
|
|
return;
|
|
|
|
OMPI_FREE_LIST_WAIT_MT(&mca_pml_ob1.send_ranges, i);
|
|
|
|
sr = (mca_pml_ob1_send_range_t*)i;
|
|
|
|
sr->range_send_offset = send_offset;
|
|
sr->range_send_length = send_length;
|
|
sr->range_btl_idx = 0;
|
|
|
|
for(n = 0; n < num_btls && n < mca_pml_ob1.max_send_per_range; n++) {
|
|
sr->range_btls[n].bml_btl =
|
|
mca_bml_base_btl_array_get_next(&bml_endpoint->btl_send);
|
|
weight_total += sr->range_btls[n].bml_btl->btl_weight;
|
|
}
|
|
|
|
sr->range_btl_cnt = n;
|
|
mca_pml_ob1_calc_weighted_length(sr->range_btls, n, send_length,
|
|
weight_total);
|
|
|
|
OPAL_THREAD_LOCK(&sendreq->req_send_range_lock);
|
|
opal_list_append(&sendreq->req_send_ranges, (opal_list_item_t*)sr);
|
|
OPAL_THREAD_UNLOCK(&sendreq->req_send_range_lock);
|
|
}
|
|
|
|
static inline mca_pml_ob1_send_range_t *
|
|
get_send_range_nolock(mca_pml_ob1_send_request_t* sendreq)
|
|
{
|
|
opal_list_item_t *item;
|
|
|
|
item = opal_list_get_first(&sendreq->req_send_ranges);
|
|
|
|
if(opal_list_get_end(&sendreq->req_send_ranges) == item)
|
|
return NULL;
|
|
|
|
return (mca_pml_ob1_send_range_t*)item;
|
|
}
|
|
|
|
static inline mca_pml_ob1_send_range_t *
|
|
get_send_range(mca_pml_ob1_send_request_t* sendreq)
|
|
{
|
|
mca_pml_ob1_send_range_t *range;
|
|
|
|
OPAL_THREAD_LOCK(&sendreq->req_send_range_lock);
|
|
range = get_send_range_nolock(sendreq);
|
|
OPAL_THREAD_UNLOCK(&sendreq->req_send_range_lock);
|
|
|
|
return range;
|
|
}
|
|
|
|
static inline mca_pml_ob1_send_range_t *
|
|
get_next_send_range(mca_pml_ob1_send_request_t* sendreq,
|
|
mca_pml_ob1_send_range_t *range)
|
|
{
|
|
OPAL_THREAD_LOCK(&sendreq->req_send_range_lock);
|
|
opal_list_remove_item(&sendreq->req_send_ranges, (opal_list_item_t *)range);
|
|
OMPI_FREE_LIST_RETURN_MT(&mca_pml_ob1.send_ranges, &range->base);
|
|
range = get_send_range_nolock(sendreq);
|
|
OPAL_THREAD_UNLOCK(&sendreq->req_send_range_lock);
|
|
|
|
return range;
|
|
}
|
|
|
|
/**
|
|
* Schedule pipeline of send descriptors for the given request.
|
|
* Up to the rdma threshold. If this is a send based protocol,
|
|
* the rdma threshold is the end of the message. Otherwise, schedule
|
|
* fragments up to the threshold to overlap initial registration/setup
|
|
* costs of the rdma. Only one thread can be inside this function.
|
|
*/
|
|
|
|
int
|
|
mca_pml_ob1_send_request_schedule_once(mca_pml_ob1_send_request_t* sendreq)
|
|
{
|
|
size_t prev_bytes_remaining = 0;
|
|
mca_pml_ob1_send_range_t *range;
|
|
int num_fail = 0;
|
|
|
|
/* check pipeline_depth here before attempting to get any locks */
|
|
if(true == sendreq->req_throttle_sends &&
|
|
sendreq->req_pipeline_depth >= mca_pml_ob1.send_pipeline_depth)
|
|
return OMPI_SUCCESS;
|
|
|
|
range = get_send_range(sendreq);
|
|
|
|
while(range && (false == sendreq->req_throttle_sends ||
|
|
sendreq->req_pipeline_depth < mca_pml_ob1.send_pipeline_depth)) {
|
|
mca_pml_ob1_frag_hdr_t* hdr;
|
|
mca_btl_base_descriptor_t* des;
|
|
int rc, btl_idx;
|
|
size_t size, offset, data_remaining = 0;
|
|
mca_bml_base_btl_t* bml_btl;
|
|
|
|
assert(range->range_send_length != 0);
|
|
|
|
if(prev_bytes_remaining == range->range_send_length)
|
|
num_fail++;
|
|
else
|
|
num_fail = 0;
|
|
|
|
prev_bytes_remaining = range->range_send_length;
|
|
|
|
if( OPAL_UNLIKELY(num_fail == range->range_btl_cnt) ) {
|
|
assert(sendreq->req_pending == MCA_PML_OB1_SEND_PENDING_NONE);
|
|
add_request_to_send_pending(sendreq,
|
|
MCA_PML_OB1_SEND_PENDING_SCHEDULE, true);
|
|
/* Note that request remains locked. send_request_process_pending()
|
|
* function will call shedule_exclusive() directly without taking
|
|
* the lock */
|
|
return OMPI_ERR_OUT_OF_RESOURCE;
|
|
}
|
|
|
|
cannot_pack:
|
|
do {
|
|
btl_idx = range->range_btl_idx;
|
|
if(++range->range_btl_idx == range->range_btl_cnt)
|
|
range->range_btl_idx = 0;
|
|
} while(!range->range_btls[btl_idx].length);
|
|
|
|
bml_btl = range->range_btls[btl_idx].bml_btl;
|
|
/* If there is a remaining data from another BTL that was too small
|
|
* for converter to pack then send it through another BTL */
|
|
range->range_btls[btl_idx].length += data_remaining;
|
|
size = range->range_btls[btl_idx].length;
|
|
|
|
/* makes sure that we don't exceed BTL max send size */
|
|
if(bml_btl->btl->btl_max_send_size != 0) {
|
|
size_t max_send_size = bml_btl->btl->btl_max_send_size -
|
|
sizeof(mca_pml_ob1_frag_hdr_t);
|
|
|
|
if (size > max_send_size) {
|
|
size = max_send_size;
|
|
}
|
|
}
|
|
|
|
/* pack into a descriptor */
|
|
offset = (size_t)range->range_send_offset;
|
|
opal_convertor_set_position(&sendreq->req_send.req_base.req_convertor,
|
|
&offset);
|
|
range->range_send_offset = (uint64_t)offset;
|
|
|
|
data_remaining = size;
|
|
MEMCHECKER(
|
|
memchecker_call(&opal_memchecker_base_mem_defined,
|
|
sendreq->req_send.req_base.req_addr,
|
|
sendreq->req_send.req_base.req_count,
|
|
sendreq->req_send.req_base.req_datatype);
|
|
);
|
|
mca_bml_base_prepare_src(bml_btl, NULL,
|
|
&sendreq->req_send.req_base.req_convertor,
|
|
MCA_BTL_NO_ORDER,
|
|
sizeof(mca_pml_ob1_frag_hdr_t),
|
|
&size, MCA_BTL_DES_FLAGS_BTL_OWNERSHIP | MCA_BTL_DES_SEND_ALWAYS_CALLBACK, &des);
|
|
MEMCHECKER(
|
|
memchecker_call(&opal_memchecker_base_mem_noaccess,
|
|
sendreq->req_send.req_base.req_addr,
|
|
sendreq->req_send.req_base.req_count,
|
|
sendreq->req_send.req_base.req_datatype);
|
|
);
|
|
|
|
if( OPAL_UNLIKELY(des == NULL || size == 0) ) {
|
|
if(des) {
|
|
/* Converter can't pack this chunk. Append to another chunk
|
|
* from other BTL */
|
|
mca_bml_base_free(bml_btl, des);
|
|
range->range_btls[btl_idx].length -= data_remaining;
|
|
goto cannot_pack;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
des->des_cbfunc = mca_pml_ob1_frag_completion;
|
|
des->des_cbdata = sendreq;
|
|
|
|
/* setup header */
|
|
hdr = (mca_pml_ob1_frag_hdr_t*)des->des_segments->seg_addr.pval;
|
|
mca_pml_ob1_frag_hdr_prepare (hdr, 0, range->range_send_offset, sendreq,
|
|
sendreq->req_recv.lval);
|
|
|
|
ob1_hdr_hton(hdr, MCA_PML_OB1_HDR_TYPE_FRAG,
|
|
sendreq->req_send.req_base.req_proc);
|
|
|
|
#if OMPI_WANT_PERUSE
|
|
PERUSE_TRACE_COMM_OMPI_EVENT(PERUSE_COMM_REQ_XFER_CONTINUE,
|
|
&(sendreq->req_send.req_base), size, PERUSE_SEND);
|
|
#endif /* OMPI_WANT_PERUSE */
|
|
|
|
#if OPAL_CUDA_SUPPORT /* CUDA_ASYNC_SEND */
|
|
/* At this point, check to see if the BTL is doing an asynchronous
|
|
* copy. This would have been initiated in the mca_bml_base_prepare_src
|
|
* called above. The flag is checked here as we let the hdr be
|
|
* set up prior to checking.
|
|
*/
|
|
if (des->des_flags & MCA_BTL_DES_FLAGS_CUDA_COPY_ASYNC) {
|
|
OPAL_OUTPUT((-1, "Initiating async copy on FRAG frag=%p", (void *)des));
|
|
/* Need to make sure BTL does not free frag after completion
|
|
* of asynchronous copy as we still need to send the fragment. */
|
|
des->des_flags &= ~MCA_BTL_DES_FLAGS_BTL_OWNERSHIP;
|
|
/* Unclear that this flag needs to be set but to be sure, set it */
|
|
des->des_flags |= MCA_BTL_DES_SEND_ALWAYS_CALLBACK;
|
|
des->des_cbfunc = mca_pml_ob1_copy_frag_completion;
|
|
range->range_btls[btl_idx].length -= size;
|
|
range->range_send_length -= size;
|
|
range->range_send_offset += size;
|
|
OPAL_THREAD_ADD_SIZE_T(&sendreq->req_pipeline_depth, 1);
|
|
if(range->range_send_length == 0) {
|
|
range = get_next_send_range(sendreq, range);
|
|
prev_bytes_remaining = 0;
|
|
}
|
|
continue;
|
|
}
|
|
#endif /* OPAL_CUDA_SUPPORT */
|
|
|
|
/* initiate send - note that this may complete before the call returns */
|
|
rc = mca_bml_base_send(bml_btl, des, MCA_PML_OB1_HDR_TYPE_FRAG);
|
|
if( OPAL_LIKELY(rc >= 0) ) {
|
|
/* update state */
|
|
range->range_btls[btl_idx].length -= size;
|
|
range->range_send_length -= size;
|
|
range->range_send_offset += size;
|
|
OPAL_THREAD_ADD_SIZE_T(&sendreq->req_pipeline_depth, 1);
|
|
if(range->range_send_length == 0) {
|
|
range = get_next_send_range(sendreq, range);
|
|
prev_bytes_remaining = 0;
|
|
}
|
|
} else {
|
|
mca_bml_base_free(bml_btl,des);
|
|
}
|
|
}
|
|
|
|
return OMPI_SUCCESS;
|
|
}
|
|
|
|
|
|
/**
|
|
* A put fragment could not be started. Queue the fragment to be retried later or
|
|
* fall back on send/recv.
|
|
*/
|
|
static void mca_pml_ob1_send_request_put_frag_failed (mca_pml_ob1_rdma_frag_t *frag, int rc)
|
|
{
|
|
mca_pml_ob1_send_request_t* sendreq = (mca_pml_ob1_send_request_t *) frag->rdma_req;
|
|
mca_bml_base_btl_t *bml_btl = frag->rdma_bml;
|
|
|
|
if (++frag->retries < mca_pml_ob1.rdma_retries_limit && OMPI_ERR_OUT_OF_RESOURCE == rc) {
|
|
/* queue the frag for later if there was a resource error */
|
|
OPAL_THREAD_LOCK(&mca_pml_ob1.lock);
|
|
opal_list_append(&mca_pml_ob1.rdma_pending, (opal_list_item_t*)frag);
|
|
OPAL_THREAD_UNLOCK(&mca_pml_ob1.lock);
|
|
} else {
|
|
/* tell receiver to deregister memory */
|
|
mca_pml_ob1_send_fin (sendreq->req_send.req_base.req_proc,
|
|
bml_btl, frag->rdma_hdr.hdr_rdma.hdr_frag,
|
|
0, MCA_BTL_NO_ORDER, 1);
|
|
|
|
/* send fragment by copy in/out */
|
|
mca_pml_ob1_send_request_copy_in_out(sendreq, frag->rdma_hdr.hdr_rdma.hdr_rdma_offset,
|
|
frag->rdma_length);
|
|
/* if a pointer to a receive request is not set it means that
|
|
* ACK was not yet received. Don't schedule sends before ACK */
|
|
if (NULL != sendreq->req_recv.pval)
|
|
mca_pml_ob1_send_request_schedule (sendreq);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* An RDMA put operation has completed:
|
|
* (1) Update request status and if required set completed
|
|
* (2) Send FIN control message to the destination
|
|
*/
|
|
|
|
static void mca_pml_ob1_put_completion (mca_btl_base_module_t* btl, struct mca_btl_base_endpoint_t* ep,
|
|
void *local_address, mca_btl_base_registration_handle_t *local_handle,
|
|
void *context, void *cbdata, int status)
|
|
{
|
|
mca_pml_ob1_rdma_frag_t *frag = (mca_pml_ob1_rdma_frag_t *) cbdata;
|
|
mca_pml_ob1_send_request_t *sendreq = (mca_pml_ob1_send_request_t *) frag->rdma_req;
|
|
mca_bml_base_btl_t *bml_btl = (mca_bml_base_btl_t *) context;
|
|
|
|
/* check completion status */
|
|
if( OPAL_UNLIKELY(OMPI_SUCCESS == status) ) {
|
|
/* TODO -- readd ordering */
|
|
mca_pml_ob1_send_fin (sendreq->req_send.req_base.req_proc, bml_btl,
|
|
frag->rdma_hdr.hdr_rdma.hdr_frag, frag->rdma_length,
|
|
0, 0);
|
|
|
|
/* check for request completion */
|
|
OPAL_THREAD_ADD_SIZE_T(&sendreq->req_bytes_delivered, frag->rdma_length);
|
|
|
|
send_request_pml_complete_check(sendreq);
|
|
} else {
|
|
/* try to fall back on send/recv */
|
|
mca_pml_ob1_send_request_put_frag_failed (frag, status);
|
|
}
|
|
|
|
MCA_PML_OB1_RDMA_FRAG_RETURN(frag);
|
|
|
|
MCA_PML_OB1_PROGRESS_PENDING(bml_btl);
|
|
}
|
|
|
|
int mca_pml_ob1_send_request_put_frag( mca_pml_ob1_rdma_frag_t *frag )
|
|
{
|
|
mca_pml_ob1_send_request_t *sendreq = (mca_pml_ob1_send_request_t *) frag->rdma_req;
|
|
mca_btl_base_registration_handle_t *local_handle = NULL;
|
|
mca_bml_base_btl_t *bml_btl = frag->rdma_bml;
|
|
int rc;
|
|
|
|
if (bml_btl->btl->btl_register_mem && NULL == frag->local_handle) {
|
|
/* Check if the segment is already registered */
|
|
for (size_t i = 0 ; i < sendreq->req_rdma_cnt ; ++i) {
|
|
if (sendreq->req_rdma[i].bml_btl == frag->rdma_bml) {
|
|
/* do not copy the handle to the fragment to avoid deregistring it twice */
|
|
local_handle = sendreq->req_rdma[i].btl_reg;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (NULL == frag->local_handle) {
|
|
/* Not already registered. Register the region with the BTL. */
|
|
mca_bml_base_register_mem (bml_btl, frag->local_address, frag->rdma_length, 0,
|
|
&frag->local_handle);
|
|
|
|
if (OPAL_UNLIKELY(NULL == frag->local_handle)) {
|
|
mca_pml_ob1_send_request_put_frag_failed (frag, OMPI_ERR_OUT_OF_RESOURCE);
|
|
|
|
return OMPI_ERR_OUT_OF_RESOURCE;
|
|
}
|
|
|
|
local_handle = frag->local_handle;
|
|
}
|
|
}
|
|
|
|
PERUSE_TRACE_COMM_OMPI_EVENT( PERUSE_COMM_REQ_XFER_CONTINUE,
|
|
&(((mca_pml_ob1_send_request_t*)frag->rdma_req)->req_send.req_base), save_size, PERUSE_SEND );
|
|
|
|
rc = mca_bml_base_put (bml_btl, frag->local_address, frag->remote_address, local_handle,
|
|
(mca_btl_base_registration_handle_t *) frag->remote_handle, frag->rdma_length,
|
|
0, mca_pml_ob1_put_completion, frag);
|
|
if (OPAL_UNLIKELY(OMPI_SUCCESS != rc)) {
|
|
mca_pml_ob1_send_request_put_frag_failed (frag, rc);
|
|
return rc;
|
|
}
|
|
|
|
return OMPI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
* Receiver has scheduled an RDMA operation:
|
|
* (1) Allocate an RDMA fragment to maintain the state of the operation
|
|
* (2) Call BTL prepare_src to pin/prepare source buffers
|
|
* (3) Queue the RDMA put
|
|
*/
|
|
|
|
void mca_pml_ob1_send_request_put( mca_pml_ob1_send_request_t* sendreq,
|
|
mca_btl_base_module_t* btl,
|
|
mca_pml_ob1_rdma_hdr_t* hdr )
|
|
{
|
|
mca_bml_base_endpoint_t *bml_endpoint = sendreq->req_endpoint;
|
|
mca_pml_ob1_rdma_frag_t* frag;
|
|
|
|
if(hdr->hdr_common.hdr_flags & MCA_PML_OB1_HDR_TYPE_ACK) {
|
|
OPAL_THREAD_ADD32(&sendreq->req_state, -1);
|
|
}
|
|
|
|
sendreq->req_recv.pval = hdr->hdr_recv_req.pval;
|
|
|
|
if (NULL == sendreq->rdma_frag) {
|
|
MCA_PML_OB1_RDMA_FRAG_ALLOC(frag);
|
|
|
|
if( OPAL_UNLIKELY(NULL == frag) ) {
|
|
/* TSW - FIX */
|
|
OMPI_ERROR_LOG(OMPI_ERR_OUT_OF_RESOURCE);
|
|
ompi_rte_abort(-1, NULL);
|
|
}
|
|
} else {
|
|
/* rget fallback on put */
|
|
frag = sendreq->rdma_frag;
|
|
sendreq->rdma_frag = NULL;
|
|
sendreq->req_state = 0;
|
|
}
|
|
|
|
/* copy registration data */
|
|
memcpy (frag->remote_handle, hdr + 1, btl->btl_registration_handle_size);
|
|
|
|
frag->rdma_bml = mca_bml_base_btl_array_find(&bml_endpoint->btl_rdma, btl);
|
|
frag->rdma_hdr.hdr_rdma = *hdr;
|
|
frag->rdma_req = sendreq;
|
|
frag->rdma_length = hdr->hdr_dst_size;
|
|
frag->rdma_state = MCA_PML_OB1_RDMA_PUT;
|
|
frag->remote_address = hdr->hdr_dst_ptr;
|
|
frag->retries = 0;
|
|
|
|
/* Get the address of the current offset. Note: at this time ob1 CAN NOT handle
|
|
* non-contiguous RDMA. If that changes this code will be wrong. */
|
|
opal_convertor_get_offset_pointer (&sendreq->req_send.req_base.req_convertor,
|
|
hdr->hdr_rdma_offset, &frag->local_address);
|
|
|
|
mca_pml_ob1_send_request_put_frag(frag);
|
|
}
|