1012 строки
36 KiB
C
1012 строки
36 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) 2004-2005 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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/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
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#include "ompi_config.h"
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#include "opal/util/crc.h"
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#include "ompi/constants.h"
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#include "ompi/mca/pml/pml.h"
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#include "ompi/mca/btl/btl.h"
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#include "orte/mca/errmgr/errmgr.h"
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#include "ompi/mca/mpool/mpool.h"
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#include "pml_dr.h"
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#include "pml_dr_hdr.h"
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#include "pml_dr_proc.h"
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#include "pml_dr_sendreq.h"
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#include "pml_dr_recvreq.h"
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#include "ompi/mca/bml/base/base.h"
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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 DR PML it should
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* be added to the free request list.
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*/
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static inline int mca_pml_dr_send_request_free(struct ompi_request_t** request)
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{
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mca_pml_dr_send_request_t* sendreq = *(mca_pml_dr_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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if( true == sendreq->req_send.req_base.req_pml_complete ) {
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MCA_PML_DR_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_dr_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_dr_send_request_construct(mca_pml_dr_send_request_t* req)
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{
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OBJ_CONSTRUCT(&req->req_vfrag0, mca_pml_dr_vfrag_t);
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OBJ_CONSTRUCT(&req->req_retrans, opal_list_t);
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req->req_vfrag0.vf_len = 1;
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req->req_vfrag0.vf_idx = 0;
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req->req_vfrag0.vf_ack = 0;
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req->req_vfrag0.vf_mask = 1;
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req->req_vfrag0.vf_mask_processed = 0;
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req->req_vfrag0.vf_send.pval = req;
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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_dr_send_request_free;
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req->req_send.req_base.req_ompi.req_cancel = mca_pml_dr_send_request_cancel;
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}
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static void mca_pml_dr_send_request_destruct(mca_pml_dr_send_request_t* req)
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{
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OBJ_DESTRUCT(&req->req_vfrag0);
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OBJ_DESTRUCT(&req->req_retrans);
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}
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OBJ_CLASS_INSTANCE(
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mca_pml_dr_send_request_t,
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mca_pml_base_send_request_t,
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mca_pml_dr_send_request_construct,
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mca_pml_dr_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 void mca_pml_dr_match_completion(
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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* descriptor,
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int status)
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{
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mca_pml_dr_send_request_t* sendreq = descriptor->des_cbdata;
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mca_pml_dr_vfrag_t* vfrag = &sendreq->req_vfrag0;
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if(descriptor != sendreq->descriptor) {
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/* only the cached descriptor needs to hang around
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for retransmission */
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mca_bml_base_free(descriptor->des_context, descriptor);
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}
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/* check completion status */
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if(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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orte_errmgr.abort();
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}
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OPAL_THREAD_LOCK(&ompi_request_lock);
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/* local completion */
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assert(vfrag->vf_mask_processed == 0);
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vfrag->vf_mask_processed |= 0x1;
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/* been acked? */
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if(vfrag->vf_ack == vfrag->vf_mask) {
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MCA_PML_DR_VFRAG_ACK_STOP(vfrag);
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/* return descriptor */
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if(NULL != sendreq->descriptor) {
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mca_bml_base_free(sendreq->descriptor->des_context, sendreq->descriptor);
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sendreq->descriptor = NULL;
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}
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/* update statistics and complete */
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sendreq->req_bytes_delivered = sendreq->req_send.req_bytes_packed;
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MCA_PML_DR_SEND_REQUEST_PML_COMPLETE(sendreq);
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OPAL_THREAD_UNLOCK(&ompi_request_lock);
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} else if(vfrag->vf_retrans) {
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MCA_PML_DR_VFRAG_ACK_STOP(vfrag);
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MCA_PML_DR_SEND_REQUEST_EAGER_RETRY(sendreq, vfrag);
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}
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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 mca_pml_dr_rndv_completion(
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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* descriptor,
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int status)
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{
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mca_pml_dr_send_request_t* sendreq = (mca_pml_dr_send_request_t*)descriptor->des_cbdata;
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mca_pml_dr_vfrag_t* vfrag = &sendreq->req_vfrag0;
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bool schedule = false;
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if(descriptor != sendreq->descriptor) {
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/* only the cached descriptor needs to hang around
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for retransmission */
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mca_bml_base_free(descriptor->des_context, descriptor);
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}
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/* check completion status */
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if(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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orte_errmgr.abort();
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}
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OPAL_THREAD_LOCK(&ompi_request_lock);
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/* local completion */
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vfrag->vf_mask_processed |= 0x1;
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/* positive ack? */
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if(vfrag->vf_ack == vfrag->vf_mask) {
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MCA_PML_DR_VFRAG_ACK_STOP(vfrag);
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if(sendreq->descriptor) {
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mca_bml_base_free(sendreq->descriptor->des_context, sendreq->descriptor);
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sendreq->descriptor = NULL;
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}
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/* matched at peer? */
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if(NULL != sendreq->req_vfrag0.vf_recv.pval) {
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sendreq->req_bytes_delivered = vfrag->vf_size;
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if(sendreq->req_bytes_delivered == sendreq->req_send.req_bytes_packed){
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MCA_PML_DR_SEND_REQUEST_PML_COMPLETE(sendreq);
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} else {
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schedule = true;
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}
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}
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OPAL_THREAD_UNLOCK(&ompi_request_lock);
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if(schedule) {
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mca_pml_dr_send_request_schedule(sendreq);
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}
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/* negative ack - need to retransmit? */
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} else if(vfrag->vf_retrans) {
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MCA_PML_DR_VFRAG_ACK_STOP(vfrag);
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MCA_PML_DR_SEND_REQUEST_RNDV_PROBE(sendreq, vfrag);
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}
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/* check for pending requests */
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MCA_PML_DR_SEND_REQUEST_PROCESS_PENDING();
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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 mca_pml_dr_frag_completion(
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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* descriptor,
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int status)
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{
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mca_pml_dr_vfrag_t* vfrag = descriptor->des_cbdata;
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mca_pml_dr_send_request_t* sendreq = vfrag->vf_send.pval;
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mca_bml_base_btl_t* bml_btl = vfrag->bml_btl;
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mca_pml_dr_frag_hdr_t* hdr = (mca_pml_dr_frag_hdr_t*)descriptor->des_src->seg_addr.pval;
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bool schedule = false;
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uint64_t bit;
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/* check completion status */
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if(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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orte_errmgr.abort();
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}
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OPAL_THREAD_LOCK(&ompi_request_lock);
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bit = ((uint64_t)1 << hdr->hdr_frag_idx);
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vfrag->vf_mask_processed |= bit;
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/* update pipeline depth */
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OPAL_THREAD_ADD_SIZE_T(&sendreq->req_pipeline_depth,-1);
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/* when we have local completion of the entire vfrag
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we stop the local wdog timers and set our ack timer
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as the peer should be sending us an ack for the vfrag
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*/
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if(vfrag->vf_mask_processed == vfrag->vf_mask) {
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MCA_PML_DR_VFRAG_WDOG_STOP(vfrag);
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/* has the vfrag already been acked */
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if(vfrag->vf_ack == vfrag->vf_mask) {
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/* check to see if we need to schedule the remainder of the message */
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sendreq->req_bytes_delivered += vfrag->vf_size;
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assert(sendreq->req_bytes_delivered <= sendreq->req_send.req_bytes_packed);
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/* return this vfrag */
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MCA_PML_DR_VFRAG_RETURN(vfrag);
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} else {
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MCA_PML_DR_VFRAG_ACK_START(vfrag);
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}
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} else {
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MCA_PML_DR_VFRAG_WDOG_RESET(vfrag);
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}
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/* are we done with this request ? */
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if(sendreq->req_bytes_delivered == sendreq->req_send.req_bytes_packed) {
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MCA_PML_DR_SEND_REQUEST_PML_COMPLETE(sendreq);
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} else if (sendreq->req_send_offset < sendreq->req_send.req_bytes_packed ||
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opal_list_get_size(&sendreq->req_retrans)) {
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schedule = true;
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}
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OPAL_THREAD_UNLOCK(&ompi_request_lock);
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/* return the descriptor */
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mca_bml_base_free(bml_btl, descriptor);
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/* schedule remainder of message? */
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if(schedule) {
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mca_pml_dr_send_request_schedule(sendreq);
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}
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/* check for pending requests */
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MCA_PML_DR_SEND_REQUEST_PROCESS_PENDING();
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}
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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_dr_send_request_start_buffered(
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mca_pml_dr_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* descriptor;
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mca_btl_base_segment_t* segment;
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mca_pml_dr_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;
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int32_t free_after;
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int rc;
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uint32_t csum;
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/* allocate descriptor */
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mca_bml_base_alloc(bml_btl, &descriptor, sizeof(mca_pml_dr_rendezvous_hdr_t) + size);
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if(NULL == descriptor) {
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return OMPI_ERR_OUT_OF_RESOURCE;
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}
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sendreq->descriptor = descriptor; /* hang on to this for later */
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segment = descriptor->des_src;
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/* pack the data into the BTL supplied buffer */
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iov.iov_base = (void*)((unsigned char*)segment->seg_addr.pval +
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sizeof(mca_pml_dr_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 = ompi_convertor_pack(
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&sendreq->req_send.req_convertor,
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&iov,
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&iov_count,
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&max_data,
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&free_after)) < 0) {
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mca_bml_base_free(bml_btl, descriptor);
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return rc;
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}
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csum = sendreq->req_send.req_convertor.checksum;
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/* update lengths */
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segment->seg_len = sizeof(mca_pml_dr_rendezvous_hdr_t) + max_data;
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sendreq->req_vfrag0.vf_size = max_data;
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sendreq->req_vfrag0.bml_btl = bml_btl;
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sendreq->req_vfrag0.vf_rndv = true;
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descriptor->des_cbfunc = mca_pml_dr_rndv_completion;
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descriptor->des_flags |= MCA_BTL_DES_FLAGS_PRIORITY;
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descriptor->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(OMPI_SUCCESS != rc) {
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mca_bml_base_free(bml_btl, descriptor);
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return rc;
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}
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iov.iov_base = (void*)(((unsigned char*)sendreq->req_send.req_addr) + max_data);
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iov.iov_len = sendreq->req_send.req_bytes_packed - max_data;
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max_data = iov.iov_len;
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if((rc = ompi_convertor_pack(
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&sendreq->req_send.req_convertor,
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&iov,
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&iov_count,
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&max_data,
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&free_after)) < 0) {
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mca_bml_base_free(bml_btl, descriptor);
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return rc;
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}
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/* build rendezvous header */
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hdr = (mca_pml_dr_hdr_t*)segment->seg_addr.pval;
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hdr->hdr_common.hdr_flags = 0;
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hdr->hdr_common.hdr_csum = 0;
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hdr->hdr_common.hdr_type = MCA_PML_DR_HDR_TYPE_RNDV;
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hdr->hdr_common.hdr_dst = sendreq->req_send.req_base.req_peer;
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hdr->hdr_common.hdr_src = sendreq->req_send.req_base.req_comm->c_my_rank;
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hdr->hdr_common.hdr_ctx = sendreq->req_send.req_base.req_comm->c_contextid;
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hdr->hdr_common.hdr_vid = sendreq->req_vfrag0.vf_id;
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hdr->hdr_match.hdr_tag = sendreq->req_send.req_base.req_tag;
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hdr->hdr_match.hdr_seq = sendreq->req_send.req_base.req_sequence;
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hdr->hdr_match.hdr_csum = csum;
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hdr->hdr_match.hdr_src_ptr.pval = &sendreq->req_vfrag0;
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hdr->hdr_rndv.hdr_msg_length = sendreq->req_send.req_bytes_packed;
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hdr->hdr_common.hdr_csum = opal_csum(hdr, sizeof(mca_pml_dr_rendezvous_hdr_t));
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/* re-init convertor for packed data */
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ompi_convertor_prepare_for_send(
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&sendreq->req_send.req_convertor,
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sendreq->req_send.req_datatype,
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sendreq->req_send.req_count,
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sendreq->req_send.req_addr);
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/* request is complete at mpi level */
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OPAL_THREAD_LOCK(&ompi_request_lock);
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MCA_PML_DR_SEND_REQUEST_MPI_COMPLETE(sendreq);
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OPAL_THREAD_UNLOCK(&ompi_request_lock);
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/* send */
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rc = mca_bml_base_send(bml_btl, descriptor, MCA_BTL_TAG_PML);
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MCA_PML_DR_VFRAG_ACK_START(&sendreq->req_vfrag0);
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if(OMPI_SUCCESS != rc) {
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mca_bml_base_free(bml_btl, descriptor );
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}
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return rc;
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}
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/**
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* BTL requires "specially" allocated memory. Request a segment that
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* is used for initial hdr and any eager data.
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*/
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int mca_pml_dr_send_request_start_copy(
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mca_pml_dr_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* descriptor;
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mca_btl_base_segment_t* segment;
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mca_pml_dr_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;
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int32_t free_after;
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int rc;
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/* allocate descriptor */
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mca_bml_base_alloc(bml_btl, &descriptor, sizeof(mca_pml_dr_match_hdr_t) + size);
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if(NULL == descriptor) {
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return OMPI_ERR_OUT_OF_RESOURCE;
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}
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sendreq->descriptor = descriptor; /* hang on to this for later */
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segment = descriptor->des_src;
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/* pack the data into the supplied buffer */
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iov.iov_base = (void*)((unsigned char*)segment->seg_addr.pval + sizeof(mca_pml_dr_match_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(size > 0) {
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if((rc = ompi_convertor_pack(
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&sendreq->req_send.req_convertor,
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&iov,
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&iov_count,
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&max_data,
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&free_after)) < 0) {
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mca_bml_base_free(bml_btl, descriptor);
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return rc;
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}
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}
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/* build match header */
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hdr = (mca_pml_dr_hdr_t*)segment->seg_addr.pval;
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hdr->hdr_common.hdr_flags = 0;
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hdr->hdr_common.hdr_csum = 0;
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hdr->hdr_common.hdr_type = MCA_PML_DR_HDR_TYPE_MATCH;
|
|
hdr->hdr_common.hdr_dst = sendreq->req_send.req_base.req_peer;
|
|
hdr->hdr_common.hdr_ctx = sendreq->req_send.req_base.req_comm->c_contextid;
|
|
hdr->hdr_common.hdr_src = sendreq->req_send.req_base.req_comm->c_my_rank;
|
|
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_csum = size > 0 ? sendreq->req_send.req_convertor.checksum : OPAL_CSUM_ZERO;
|
|
hdr->hdr_match.hdr_src_ptr.pval = &sendreq->req_vfrag0;
|
|
hdr->hdr_common.hdr_vid = sendreq->req_vfrag0.vf_id;
|
|
hdr->hdr_common.hdr_csum = opal_csum(hdr, sizeof(mca_pml_dr_match_hdr_t));
|
|
|
|
/* update lengths */
|
|
segment->seg_len = sizeof(mca_pml_dr_match_hdr_t) + max_data;
|
|
sendreq->req_vfrag0.vf_size = max_data;
|
|
sendreq->req_vfrag0.bml_btl = bml_btl;
|
|
sendreq->req_vfrag0.vf_rndv = false;
|
|
|
|
/* short message */
|
|
descriptor->des_cbfunc = mca_pml_dr_match_completion;
|
|
descriptor->des_flags |= MCA_BTL_DES_FLAGS_PRIORITY;
|
|
descriptor->des_cbdata = sendreq;
|
|
|
|
/* signal request completion */
|
|
OPAL_THREAD_LOCK(&ompi_request_lock);
|
|
MCA_PML_DR_SEND_REQUEST_MPI_COMPLETE(sendreq);
|
|
OPAL_THREAD_UNLOCK(&ompi_request_lock);
|
|
|
|
/* send */
|
|
rc = mca_bml_base_send(bml_btl, descriptor, MCA_BTL_TAG_PML);
|
|
MCA_PML_DR_VFRAG_ACK_START(&sendreq->req_vfrag0);
|
|
if(OMPI_SUCCESS != rc) {
|
|
mca_bml_base_free(bml_btl, descriptor );
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* BTL can send directly from user buffer so allow the BTL
|
|
* to prepare the segment list.
|
|
*/
|
|
|
|
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)
|
|
{
|
|
mca_btl_base_descriptor_t* descriptor;
|
|
mca_btl_base_segment_t* segment;
|
|
mca_pml_dr_hdr_t* hdr;
|
|
int rc;
|
|
|
|
/* prepare descriptor */
|
|
mca_bml_base_prepare_src(
|
|
bml_btl,
|
|
NULL,
|
|
&sendreq->req_send.req_convertor,
|
|
sizeof(mca_pml_dr_match_hdr_t),
|
|
&size,
|
|
&descriptor);
|
|
if(NULL == descriptor) {
|
|
return OMPI_ERR_OUT_OF_RESOURCE;
|
|
}
|
|
sendreq->descriptor = descriptor; /* hang on to this for later */
|
|
segment = descriptor->des_src;
|
|
|
|
/* build match header */
|
|
hdr = (mca_pml_dr_hdr_t*)segment->seg_addr.pval;
|
|
hdr->hdr_common.hdr_flags = 0;
|
|
hdr->hdr_common.hdr_csum = 0;
|
|
hdr->hdr_common.hdr_type = MCA_PML_DR_HDR_TYPE_MATCH;
|
|
hdr->hdr_common.hdr_dst = sendreq->req_send.req_base.req_peer;
|
|
hdr->hdr_common.hdr_ctx = sendreq->req_send.req_base.req_comm->c_contextid;
|
|
hdr->hdr_common.hdr_src = sendreq->req_send.req_base.req_comm->c_my_rank;
|
|
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_csum = size > 0 ? sendreq->req_send.req_convertor.checksum : OPAL_CSUM_ZERO;
|
|
hdr->hdr_match.hdr_src_ptr.pval = &sendreq->req_vfrag0;
|
|
hdr->hdr_common.hdr_vid = sendreq->req_vfrag0.vf_id;
|
|
hdr->hdr_common.hdr_csum = opal_csum(hdr, sizeof(mca_pml_dr_match_hdr_t));
|
|
|
|
/* short message */
|
|
descriptor->des_cbfunc = mca_pml_dr_match_completion;
|
|
descriptor->des_flags |= MCA_BTL_DES_FLAGS_PRIORITY;
|
|
descriptor->des_cbdata = sendreq;
|
|
|
|
/* update lengths */
|
|
sendreq->req_vfrag0.vf_size = size;
|
|
sendreq->req_vfrag0.bml_btl = bml_btl;
|
|
sendreq->req_vfrag0.vf_rndv = false;
|
|
|
|
/* send */
|
|
rc = mca_bml_base_send(bml_btl, descriptor, MCA_BTL_TAG_PML);
|
|
MCA_PML_DR_VFRAG_ACK_START(&sendreq->req_vfrag0);
|
|
if(OMPI_SUCCESS != rc) {
|
|
mca_bml_base_free(bml_btl, descriptor );
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
|
|
/**
|
|
* Rendezvous is required. Eager send up to
|
|
* the btls eager limit.
|
|
*/
|
|
|
|
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)
|
|
{
|
|
mca_btl_base_descriptor_t* des;
|
|
mca_btl_base_segment_t* segment;
|
|
mca_pml_dr_hdr_t* hdr;
|
|
int rc;
|
|
|
|
|
|
/* prepare descriptor */
|
|
if(size == 0) {
|
|
mca_bml_base_alloc(
|
|
bml_btl,
|
|
&des,
|
|
sizeof(mca_pml_dr_rendezvous_hdr_t)
|
|
);
|
|
} else {
|
|
mca_bml_base_prepare_src(
|
|
bml_btl,
|
|
NULL,
|
|
&sendreq->req_send.req_convertor,
|
|
sizeof(mca_pml_dr_rendezvous_hdr_t),
|
|
&size,
|
|
&des);
|
|
}
|
|
|
|
if(NULL == des) {
|
|
return OMPI_ERR_OUT_OF_RESOURCE;
|
|
}
|
|
sendreq->descriptor = des; /* hang on to this for later */
|
|
segment = des->des_src;
|
|
|
|
/* build hdr */
|
|
hdr = (mca_pml_dr_hdr_t*)segment->seg_addr.pval;
|
|
hdr->hdr_common.hdr_flags = flags;
|
|
hdr->hdr_common.hdr_type = MCA_PML_DR_HDR_TYPE_RNDV;
|
|
hdr->hdr_common.hdr_dst = sendreq->req_send.req_base.req_peer;
|
|
hdr->hdr_common.hdr_ctx = sendreq->req_send.req_base.req_comm->c_contextid;
|
|
hdr->hdr_common.hdr_src = sendreq->req_send.req_base.req_comm->c_my_rank;
|
|
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 = size > 0 ? sendreq->req_send.req_convertor.checksum : 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 = opal_csum(hdr, sizeof(mca_pml_dr_rendezvous_hdr_t));
|
|
|
|
/* first fragment of a long message */
|
|
des->des_flags |= MCA_BTL_DES_FLAGS_PRIORITY;
|
|
des->des_cbdata = sendreq;
|
|
des->des_cbfunc = mca_pml_dr_rndv_completion;
|
|
sendreq->req_vfrag0.vf_size = size;
|
|
sendreq->req_vfrag0.bml_btl = bml_btl;
|
|
sendreq->req_vfrag0.vf_rndv = true;
|
|
|
|
/* send */
|
|
MCA_PML_DR_VFRAG_ACK_START(&sendreq->req_vfrag0);
|
|
rc = mca_bml_base_send(bml_btl, des, MCA_BTL_TAG_PML);
|
|
if(OMPI_SUCCESS != rc) {
|
|
mca_bml_base_free(bml_btl, des );
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Schedule pipeline of send descriptors for the given request,
|
|
* using send protocol.
|
|
*/
|
|
|
|
int mca_pml_dr_send_request_schedule(mca_pml_dr_send_request_t* sendreq)
|
|
{
|
|
/*
|
|
* Only allow one thread in this routine for a given request.
|
|
* However, we cannot block callers on a mutex, so simply keep track
|
|
* of the number of times the routine has been called and run through
|
|
* the scheduling logic once for every call.
|
|
*/
|
|
|
|
mca_bml_base_endpoint_t* bml_endpoint = sendreq->req_endpoint;
|
|
if(OPAL_THREAD_ADD32(&sendreq->req_lock,1) == 1) {
|
|
do {
|
|
/* allocate remaining bytes to BTLs */
|
|
size_t bytes_remaining = sendreq->req_send.req_bytes_packed - sendreq->req_send_offset;
|
|
while(bytes_remaining > 0 &&
|
|
sendreq->req_pipeline_depth < mca_pml_dr.send_pipeline_depth) {
|
|
|
|
mca_pml_dr_frag_hdr_t* hdr;
|
|
mca_btl_base_descriptor_t* des;
|
|
mca_bml_base_btl_t* bml_btl = NULL;
|
|
mca_pml_dr_vfrag_t* vfrag = sendreq->req_vfrag;
|
|
size_t size = bytes_remaining;
|
|
|
|
/* offset tells us how much of the vfrag has been scheduled */
|
|
size_t offset = sendreq->req_send_offset - vfrag->vf_offset;
|
|
int rc;
|
|
|
|
/* do we need to allocate a new vfrag
|
|
(we scheduled all the vfrag already) */
|
|
if(vfrag->vf_size == offset) {
|
|
bml_btl = mca_bml_base_btl_array_get_next(&bml_endpoint->btl_send);
|
|
MCA_PML_DR_VFRAG_ALLOC(vfrag,rc);
|
|
if(NULL == vfrag) {
|
|
OPAL_THREAD_LOCK(&mca_pml_dr.lock);
|
|
opal_list_append(&mca_pml_dr.send_pending, (opal_list_item_t*)sendreq);
|
|
OPAL_THREAD_UNLOCK(&mca_pml_dr.lock);
|
|
break;
|
|
}
|
|
MCA_PML_DR_SEND_REQUEST_VFRAG_INIT(sendreq,bml_endpoint,bytes_remaining,vfrag);
|
|
vfrag->bml_btl = bml_btl;
|
|
offset = 0;
|
|
|
|
} else { /* always schedule the vfrag accross the same btl */
|
|
bml_btl = vfrag->bml_btl;
|
|
}
|
|
|
|
/* makes sure that we don't exceed vfrag size */
|
|
if (size > vfrag->vf_max_send_size) {
|
|
size = vfrag->vf_max_send_size;
|
|
}
|
|
if (size > vfrag->vf_size - offset) {
|
|
size = vfrag->vf_size - offset;
|
|
}
|
|
|
|
/* pack into a descriptor */
|
|
ompi_convertor_set_position(&sendreq->req_send.req_convertor, &sendreq->req_send_offset);
|
|
mca_bml_base_prepare_src(
|
|
bml_btl,
|
|
NULL,
|
|
&sendreq->req_send.req_convertor,
|
|
sizeof(mca_pml_dr_frag_hdr_t),
|
|
&size,
|
|
&des
|
|
);
|
|
if(des == NULL) {
|
|
OPAL_THREAD_LOCK(&mca_pml_dr.lock);
|
|
opal_list_append(&mca_pml_dr.send_pending, (opal_list_item_t*)sendreq);
|
|
OPAL_THREAD_UNLOCK(&mca_pml_dr.lock);
|
|
break;
|
|
}
|
|
des->des_cbfunc = mca_pml_dr_frag_completion;
|
|
des->des_cbdata = vfrag;
|
|
|
|
/* setup header */
|
|
hdr = (mca_pml_dr_frag_hdr_t*)des->des_src->seg_addr.pval;
|
|
hdr->hdr_common.hdr_flags = 0;
|
|
hdr->hdr_common.hdr_csum = 0;
|
|
hdr->hdr_common.hdr_type = MCA_PML_DR_HDR_TYPE_FRAG;
|
|
hdr->hdr_common.hdr_dst = sendreq->req_send.req_base.req_peer;
|
|
hdr->hdr_common.hdr_vid = vfrag->vf_id;
|
|
hdr->hdr_common.hdr_src = sendreq->req_send.req_base.req_comm->c_my_rank;
|
|
hdr->hdr_common.hdr_ctx = sendreq->req_send.req_base.req_comm->c_contextid;
|
|
hdr->hdr_vlen = vfrag->vf_len;
|
|
hdr->hdr_frag_idx = vfrag->vf_idx;
|
|
hdr->hdr_frag_csum = sendreq->req_send.req_convertor.checksum;
|
|
hdr->hdr_frag_offset = sendreq->req_send_offset;
|
|
hdr->hdr_src_ptr.pval = vfrag;
|
|
hdr->hdr_dst_ptr = sendreq->req_vfrag0.vf_recv;
|
|
hdr->hdr_common.hdr_csum = opal_csum(hdr, sizeof(mca_pml_dr_frag_hdr_t));
|
|
|
|
/* update state */
|
|
vfrag->vf_idx++;
|
|
vfrag->vf_rndv = false;
|
|
|
|
sendreq->req_send_offset += size;
|
|
OPAL_THREAD_ADD_SIZE_T(&sendreq->req_pipeline_depth,1);
|
|
|
|
/* start vfrag watchdog timer if this is the first part of the vfrag*/
|
|
if(vfrag->vf_idx == 1) {
|
|
MCA_PML_DR_VFRAG_WDOG_START(vfrag);
|
|
}
|
|
/* initiate send - note that this may complete before the call returns */
|
|
rc = mca_bml_base_send( bml_btl, des, MCA_BTL_TAG_PML);
|
|
|
|
if(rc == OMPI_SUCCESS) {
|
|
bytes_remaining -= size;
|
|
} else {
|
|
sendreq->req_send_offset -= size;
|
|
OPAL_THREAD_ADD_SIZE_T(&sendreq->req_pipeline_depth,-1);
|
|
mca_bml_base_free(bml_btl,des);
|
|
OPAL_THREAD_LOCK(&mca_pml_dr.lock);
|
|
opal_list_append(&mca_pml_dr.send_pending, (opal_list_item_t*)sendreq);
|
|
OPAL_THREAD_UNLOCK(&mca_pml_dr.lock);
|
|
break;
|
|
}
|
|
mca_pml_dr_progress();
|
|
}
|
|
|
|
/*
|
|
* VFrags w/ nacks or that timed out
|
|
*/
|
|
while(opal_list_get_size(&sendreq->req_retrans) &&
|
|
sendreq->req_pipeline_depth < mca_pml_dr.send_pipeline_depth) {
|
|
mca_pml_dr_vfrag_t* vfrag = (mca_pml_dr_vfrag_t*)opal_list_get_first(&sendreq->req_retrans);
|
|
|
|
/*
|
|
* Retransmit fragments that have not been acked.
|
|
*/
|
|
while(vfrag->vf_idx < vfrag->vf_len &&
|
|
sendreq->req_pipeline_depth < mca_pml_dr.send_pipeline_depth) {
|
|
if(((1 << vfrag->vf_idx) & vfrag->vf_mask_processed) == 0) {
|
|
mca_bml_base_btl_t* bml_btl = vfrag->bml_btl;
|
|
mca_pml_dr_frag_hdr_t* hdr;
|
|
mca_btl_base_descriptor_t* des;
|
|
size_t offset_in_vfrag = vfrag->vf_max_send_size * vfrag->vf_idx;
|
|
size_t offset_in_msg = vfrag->vf_offset + offset_in_vfrag;
|
|
size_t size;
|
|
int rc;
|
|
|
|
vfrag->vf_retry_cnt ++;
|
|
if(vfrag->vf_idx == vfrag->vf_len - 1) {
|
|
size = vfrag->vf_size - offset_in_vfrag;
|
|
} else {
|
|
size = vfrag->vf_max_send_size;
|
|
}
|
|
|
|
/* pack into a descriptor */
|
|
ompi_convertor_set_position(&sendreq->req_send.req_convertor, &offset_in_msg);
|
|
mca_bml_base_prepare_src(
|
|
bml_btl,
|
|
NULL,
|
|
&sendreq->req_send.req_convertor,
|
|
sizeof(mca_pml_dr_frag_hdr_t),
|
|
&size,
|
|
&des
|
|
);
|
|
if(des == NULL) {
|
|
OPAL_THREAD_LOCK(&mca_pml_dr.lock);
|
|
opal_list_append(&mca_pml_dr.send_pending, (opal_list_item_t*)sendreq);
|
|
OPAL_THREAD_UNLOCK(&mca_pml_dr.lock);
|
|
break;
|
|
}
|
|
des->des_cbfunc = mca_pml_dr_frag_completion;
|
|
des->des_cbdata = vfrag;
|
|
|
|
/* setup header */
|
|
hdr = (mca_pml_dr_frag_hdr_t*)des->des_src->seg_addr.pval;
|
|
hdr->hdr_common.hdr_flags = 0;
|
|
hdr->hdr_common.hdr_csum = 0;
|
|
hdr->hdr_common.hdr_type = MCA_PML_DR_HDR_TYPE_FRAG;
|
|
hdr->hdr_common.hdr_dst = sendreq->req_send.req_base.req_peer;
|
|
hdr->hdr_common.hdr_vid = vfrag->vf_id;
|
|
hdr->hdr_common.hdr_src = sendreq->req_send.req_base.req_comm->c_my_rank;
|
|
hdr->hdr_common.hdr_ctx = sendreq->req_send.req_base.req_comm->c_contextid;
|
|
hdr->hdr_vlen = vfrag->vf_len;
|
|
hdr->hdr_frag_idx = vfrag->vf_idx;
|
|
hdr->hdr_frag_csum = sendreq->req_send.req_convertor.checksum;
|
|
hdr->hdr_frag_offset = sendreq->req_send_offset;
|
|
hdr->hdr_src_ptr.pval = vfrag;
|
|
hdr->hdr_dst_ptr = sendreq->req_vfrag0.vf_recv;
|
|
hdr->hdr_common.hdr_csum = opal_csum(hdr, sizeof(mca_pml_dr_frag_hdr_t));
|
|
|
|
vfrag->vf_rndv = false;
|
|
/* update state */
|
|
OPAL_THREAD_ADD_SIZE_T(&sendreq->req_pipeline_depth,1);
|
|
|
|
/* reset the vfrag watchdog timer due to retransmission */
|
|
MCA_PML_DR_VFRAG_WDOG_RESET(vfrag);
|
|
|
|
/* initiate send - note that this may complete before the call returns */
|
|
rc = mca_bml_base_send( bml_btl, des, MCA_BTL_TAG_PML);
|
|
|
|
if(rc == OMPI_SUCCESS) {
|
|
bytes_remaining -= size;
|
|
} else {
|
|
OPAL_THREAD_ADD_SIZE_T(&sendreq->req_pipeline_depth,-1);
|
|
mca_bml_base_free(bml_btl,des);
|
|
OPAL_THREAD_LOCK(&mca_pml_dr.lock);
|
|
opal_list_append(&mca_pml_dr.send_pending, (opal_list_item_t*)sendreq);
|
|
OPAL_THREAD_UNLOCK(&mca_pml_dr.lock);
|
|
break;
|
|
}
|
|
}
|
|
vfrag->vf_idx++;
|
|
}
|
|
|
|
/* move from retrans to pending list */
|
|
if(vfrag->vf_idx == vfrag->vf_len) {
|
|
OPAL_THREAD_LOCK(&ompi_request_lock);
|
|
opal_list_remove_item(&sendreq->req_retrans, (opal_list_item_t*)vfrag);
|
|
OPAL_THREAD_UNLOCK(&ompi_request_lock);
|
|
}
|
|
}
|
|
} while (OPAL_THREAD_ADD32(&sendreq->req_lock,-1) > 0);
|
|
}
|
|
return OMPI_SUCCESS;
|
|
}
|
|
|
|
|
|
/**
|
|
* Acknowledgment of match vfrag.
|
|
*/
|
|
|
|
void mca_pml_dr_send_request_match_ack(
|
|
mca_btl_base_module_t* btl,
|
|
mca_pml_dr_ack_hdr_t* ack)
|
|
{
|
|
mca_pml_dr_vfrag_t* vfrag = ack->hdr_src_ptr.pval;
|
|
mca_pml_dr_send_request_t* sendreq = vfrag->vf_send.pval;
|
|
|
|
OPAL_THREAD_LOCK(&ompi_request_lock);
|
|
assert(vfrag->vf_ack == 0);
|
|
|
|
vfrag->vf_ack = ack->hdr_vmask & vfrag->vf_mask;
|
|
if ((vfrag->vf_mask_processed & vfrag->vf_mask) == vfrag->vf_mask) {
|
|
MCA_PML_DR_VFRAG_ACK_STOP(vfrag);
|
|
/* need to retransmit? */
|
|
if(vfrag->vf_ack != vfrag->vf_mask) {
|
|
MCA_PML_DR_SEND_REQUEST_EAGER_RETRY(sendreq, vfrag);
|
|
} else {
|
|
/* if already have local completion free descriptor and complete message */
|
|
/* return descriptor */
|
|
if(NULL != sendreq->descriptor) {
|
|
mca_bml_base_free(sendreq->descriptor->des_context, sendreq->descriptor );
|
|
sendreq->descriptor = NULL;
|
|
}
|
|
|
|
/* update statistics */
|
|
sendreq->req_bytes_delivered = vfrag->vf_size;
|
|
MCA_PML_DR_SEND_REQUEST_PML_COMPLETE(sendreq);
|
|
OPAL_THREAD_UNLOCK(&ompi_request_lock);
|
|
}
|
|
|
|
/* wait for local completion */
|
|
} else {
|
|
/* need to retransmit? */
|
|
if(vfrag->vf_ack != vfrag->vf_mask) {
|
|
vfrag->vf_retrans = vfrag->vf_mask;
|
|
} else {
|
|
vfrag->vf_recv = ack->hdr_dst_ptr;
|
|
}
|
|
OPAL_THREAD_UNLOCK(&ompi_request_lock);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Acknowledgment of rndv vfrag.
|
|
*/
|
|
|
|
void mca_pml_dr_send_request_rndv_ack(
|
|
mca_btl_base_module_t* btl,
|
|
mca_pml_dr_ack_hdr_t* ack)
|
|
{
|
|
mca_pml_dr_vfrag_t* vfrag = ack->hdr_src_ptr.pval;
|
|
mca_pml_dr_send_request_t* sendreq = vfrag->vf_send.pval;
|
|
|
|
OPAL_THREAD_LOCK(&ompi_request_lock);
|
|
|
|
/* set acked bits */
|
|
vfrag->vf_ack = ack->hdr_vmask & vfrag->vf_mask;
|
|
|
|
/* local completion? */
|
|
if ((vfrag->vf_mask_processed & vfrag->vf_mask) == vfrag->vf_mask) {
|
|
bool schedule = false;
|
|
MCA_PML_DR_VFRAG_ACK_STOP(vfrag);
|
|
|
|
/* need to retransmit? */
|
|
if(vfrag->vf_ack != vfrag->vf_mask) {
|
|
/* got a NACK, resend eager data! */
|
|
MCA_PML_DR_SEND_REQUEST_EAGER_RETRY(sendreq, vfrag);
|
|
} else {
|
|
/* return descriptor of first fragment */
|
|
if(NULL != sendreq->descriptor) {
|
|
mca_bml_base_free(sendreq->descriptor->des_context, sendreq->descriptor);
|
|
sendreq->descriptor = NULL;
|
|
}
|
|
|
|
/* done? */
|
|
sendreq->req_bytes_delivered = ack->hdr_vlen;
|
|
if(sendreq->req_bytes_delivered == sendreq->req_send.req_bytes_packed){
|
|
MCA_PML_DR_SEND_REQUEST_PML_COMPLETE(sendreq);
|
|
} else {
|
|
vfrag->vf_recv = ack->hdr_dst_ptr;
|
|
sendreq->req_send_offset = ack->hdr_vlen;
|
|
schedule = true;
|
|
}
|
|
OPAL_THREAD_UNLOCK(&ompi_request_lock);
|
|
|
|
if(schedule) {
|
|
mca_pml_dr_send_request_schedule(sendreq);
|
|
}
|
|
}
|
|
|
|
/* wait for local completion */
|
|
} else {
|
|
|
|
/* need to retransmit? */
|
|
if(vfrag->vf_ack != vfrag->vf_mask) {
|
|
vfrag->vf_retrans = vfrag->vf_mask;
|
|
} else {
|
|
/* may need this to schedule rest of the message */
|
|
vfrag->vf_recv = ack->hdr_dst_ptr;
|
|
sendreq->req_send_offset = ack->hdr_vlen;
|
|
}
|
|
OPAL_THREAD_UNLOCK(&ompi_request_lock);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Acknowledgment of vfrag.
|
|
*/
|
|
|
|
void mca_pml_dr_send_request_frag_ack(
|
|
mca_btl_base_module_t* btl,
|
|
mca_pml_dr_ack_hdr_t* ack)
|
|
{
|
|
mca_pml_dr_vfrag_t* vfrag = ack->hdr_src_ptr.pval;
|
|
mca_pml_dr_send_request_t* sendreq = vfrag->vf_send.pval;
|
|
bool schedule = false;
|
|
MCA_PML_DR_VFRAG_ACK_STOP(vfrag);
|
|
OPAL_THREAD_LOCK(&ompi_request_lock);
|
|
|
|
/* add in acknowledged fragments */
|
|
vfrag->vf_ack |= (ack->hdr_vmask & vfrag->vf_mask);
|
|
|
|
/* need to retransmit? */
|
|
if((vfrag->vf_ack & vfrag->vf_mask) != vfrag->vf_mask) {
|
|
|
|
/* reset local completion flags to only those that have been successfully acked */
|
|
vfrag->vf_mask_processed = vfrag->vf_ack;
|
|
vfrag->vf_idx = 0;
|
|
opal_list_append(&sendreq->req_retrans, (opal_list_item_t*)vfrag);
|
|
schedule = true;
|
|
|
|
/* acked and local completion */
|
|
} else if (vfrag->vf_mask_processed == vfrag->vf_mask) {
|
|
|
|
/* update statistics */
|
|
sendreq->req_bytes_delivered += vfrag->vf_size;
|
|
assert(sendreq->req_bytes_delivered <= sendreq->req_send.req_bytes_packed);
|
|
|
|
/* return vfrag */
|
|
MCA_PML_DR_VFRAG_RETURN(vfrag);
|
|
|
|
/* are we done with this request ? */
|
|
if(sendreq->req_bytes_delivered == sendreq->req_send.req_bytes_packed) {
|
|
MCA_PML_DR_SEND_REQUEST_PML_COMPLETE(sendreq);
|
|
/* is there something left to schedule */
|
|
} else if (sendreq->req_send_offset < sendreq->req_send.req_bytes_packed) {
|
|
schedule = true;
|
|
}
|
|
}
|
|
OPAL_THREAD_UNLOCK(&ompi_request_lock);
|
|
if(schedule) {
|
|
mca_pml_dr_send_request_schedule(sendreq);
|
|
}
|
|
}
|
|
|