110 строки
3.6 KiB
C
110 строки
3.6 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) 2004-2008 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "ompi_config.h"
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#include "pml_ob1.h"
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#include "pml_ob1_sendreq.h"
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#include "ompi/mca/bml/base/base.h"
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#if OPAL_CUDA_SUPPORT
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#include "opal/mca/common/cuda/common_cuda.h"
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#include "pml_ob1_recvreq.h"
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#include "opal/runtime/opal_params.h"
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static void mca_pml_ob1_process_pending_cuda_async_copies(void);
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#endif /* OPAL_CUDA_SUPPORT */
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int mca_pml_ob1_progress(void)
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{
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int i, queue_length = opal_list_get_size(&mca_pml_ob1.send_pending);
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int j, completed_requests = 0;
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bool send_succedded;
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#if OPAL_CUDA_SUPPORT
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mca_pml_ob1_process_pending_cuda_async_copies();
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#endif /* OPAL_CUDA_SUPPORT */
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if( OPAL_LIKELY(0 == queue_length) )
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return 0;
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for( i = 0; i < queue_length; 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_endpoint_t* endpoint;
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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_NONE:
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assert(0);
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return 0;
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case MCA_PML_OB1_SEND_PENDING_SCHEDULE:
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if( mca_pml_ob1_send_request_schedule_exclusive(sendreq) ==
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OMPI_ERR_OUT_OF_RESOURCE ) {
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return 0;
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}
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completed_requests++;
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break;
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case MCA_PML_OB1_SEND_PENDING_START:
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MCA_PML_OB1_SEND_REQUEST_RESET(sendreq);
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endpoint = sendreq->req_endpoint;
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send_succedded = false;
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for(j = 0; j < (int)mca_bml_base_btl_array_get_size(&endpoint->btl_eager); j++) {
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mca_bml_base_btl_t* bml_btl;
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int rc;
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/* select a btl */
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bml_btl = mca_bml_base_btl_array_get_next(&endpoint->btl_eager);
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rc = mca_pml_ob1_send_request_start_btl(sendreq, bml_btl);
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if( OPAL_LIKELY(OMPI_SUCCESS == rc) ) {
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send_succedded = true;
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completed_requests++;
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break;
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}
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}
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if( false == send_succedded ) {
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add_request_to_send_pending(sendreq, MCA_PML_OB1_SEND_PENDING_START, true);
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}
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}
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}
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return completed_requests;
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}
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#if OPAL_CUDA_SUPPORT
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static void mca_pml_ob1_process_pending_cuda_async_copies(void)
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{
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mca_btl_base_descriptor_t *frag;
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int progress;
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if (!opal_cuda_support)
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return;
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do {
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progress = progress_one_cuda_htod_event(&frag);
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if (1 == progress) {
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/* Call the finish function to make progress. */
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mca_pml_ob1_recv_request_frag_copy_finished(NULL, NULL, frag, 0);
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}
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} while (progress > 0);
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/* Consider progressing dtoh events here in future */
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}
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#endif /* OPAL_CUDA_SUPPORT */
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