425 строки
24 KiB
C
425 строки
24 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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* @file
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*/
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#ifndef OMPI_PML_OB1_SEND_REQUEST_H
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#define OMPI_PML_OB1_SEND_REQUEST_H
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#include "mca/btl/btl.h"
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#include "mca/pml/base/pml_base_sendreq.h"
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#include "mca/mpool/base/base.h"
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#include "pml_ob1_proc.h"
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#include "pml_ob1_comm.h"
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#include "pml_ob1_hdr.h"
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#include "pml_ob1_rdma.h"
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#include "datatype/convertor.h"
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#include "mca/bml/bml.h"
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#if defined(c_plusplus) || defined(__cplusplus)
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extern "C" {
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#endif
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struct mca_pml_ob1_send_request_t {
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mca_pml_base_send_request_t req_send;
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ompi_proc_t* req_proc;
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mca_bml_base_endpoint_t* req_endpoint;
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ompi_ptr_t req_recv;
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#if OMPI_HAVE_THREAD_SUPPORT
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volatile int32_t req_state;
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volatile int32_t req_lock;
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#else
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int32_t req_state;
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int32_t req_lock;
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#endif
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size_t req_pipeline_depth;
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size_t req_bytes_delivered;
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size_t req_send_offset;
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size_t req_rdma_offset;
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mca_pml_ob1_rdma_btl_t req_rdma[MCA_PML_OB1_MAX_RDMA_PER_REQUEST];
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uint32_t req_rdma_cnt;
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};
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typedef struct mca_pml_ob1_send_request_t mca_pml_ob1_send_request_t;
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OBJ_CLASS_DECLARATION(mca_pml_ob1_send_request_t);
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#define MCA_PML_OB1_SEND_REQUEST_ALLOC( \
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comm, \
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dst, \
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sendreq, \
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rc) \
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{ \
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ompi_proc_t *proc = \
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comm->c_pml_procs[dst]->proc_ompi; \
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opal_list_item_t* item; \
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\
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if(NULL == proc) { \
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rc = OMPI_ERR_OUT_OF_RESOURCE; \
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} else { \
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rc = OMPI_SUCCESS; \
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OMPI_FREE_LIST_WAIT(&mca_pml_ob1.send_requests, item, rc); \
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sendreq = (mca_pml_ob1_send_request_t*)item; \
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sendreq->req_proc = proc; \
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} \
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}
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#define MCA_PML_OB1_SEND_REQUEST_INIT( \
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sendreq, \
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buf, \
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count, \
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datatype, \
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dst, \
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tag, \
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comm, \
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sendmode, \
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persistent) \
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{ \
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MCA_PML_BASE_SEND_REQUEST_INIT(&sendreq->req_send, \
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buf, \
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count, \
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datatype, \
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dst, \
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tag, \
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comm, \
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sendmode, \
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persistent); \
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}
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/**
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* Diagnostic output to trace rdma protocol timing
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*/
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/**
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* Start a send request.
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*/
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#define MCA_PML_OB1_SEND_REQUEST_START(sendreq, rc) \
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do { \
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mca_pml_ob1_comm_t* comm = sendreq->req_send.req_base.req_comm->c_pml_comm; \
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mca_bml_base_endpoint_t* endpoint = (mca_bml_base_endpoint_t*)sendreq->req_proc->proc_pml; \
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mca_bml_base_btl_t* bml_btl; \
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size_t size = sendreq->req_send.req_bytes_packed; \
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\
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if(endpoint == NULL) { \
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rc = OMPI_ERR_UNREACH; \
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break; \
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} \
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\
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sendreq->req_lock = 0; \
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sendreq->req_pipeline_depth = 0; \
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sendreq->req_bytes_delivered = 0; \
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sendreq->req_rdma_cnt = 0; \
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sendreq->req_state = 0; \
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sendreq->req_send_offset = 0; \
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sendreq->req_send.req_base.req_pml_complete = false; \
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sendreq->req_send.req_base.req_ompi.req_complete = false; \
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sendreq->req_send.req_base.req_ompi.req_state = OMPI_REQUEST_ACTIVE; \
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sendreq->req_send.req_base.req_ompi.req_status._cancelled = 0; \
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sendreq->req_send.req_base.req_sequence = OPAL_THREAD_ADD32( \
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&comm->procs[sendreq->req_send.req_base.req_peer].send_sequence,1); \
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sendreq->req_endpoint = endpoint; \
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\
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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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\
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/* shortcut for zero byte */ \
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if(size == 0 && sendreq->req_send.req_send_mode != MCA_PML_BASE_SEND_SYNCHRONOUS) { \
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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_ob1_hdr_t* hdr; \
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\
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/* allocate a descriptor */ \
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MCA_PML_OB1_DES_ALLOC(bml_btl, descriptor, sizeof(mca_pml_ob1_match_hdr_t)); \
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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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segment = descriptor->des_src; \
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\
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/* build hdr */ \
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hdr = (mca_pml_ob1_hdr_t*)segment->seg_addr.pval; \
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hdr->hdr_common.hdr_flags = 0; \
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hdr->hdr_common.hdr_type = MCA_PML_OB1_HDR_TYPE_MATCH; \
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hdr->hdr_match.hdr_ctx = sendreq->req_send.req_base.req_comm->c_contextid; \
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hdr->hdr_match.hdr_src = sendreq->req_send.req_base.req_comm->c_my_rank; \
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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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\
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/* short message */ \
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descriptor->des_cbfunc = mca_pml_ob1_match_completion_cache; \
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descriptor->des_flags |= MCA_BTL_DES_FLAGS_PRIORITY; \
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descriptor->des_cbdata = sendreq; \
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\
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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_OB1_SEND_REQUEST_MPI_COMPLETE(sendreq); \
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OPAL_THREAD_UNLOCK(&ompi_request_lock); \
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\
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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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if(OMPI_SUCCESS != rc) { \
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mca_bml_base_free(bml_btl, descriptor ); \
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} \
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\
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} else { \
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size_t eager_limit = bml_btl->btl_eager_limit - sizeof(mca_pml_ob1_hdr_t); \
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if(size <= eager_limit) { \
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switch(sendreq->req_send.req_send_mode) { \
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case MCA_PML_BASE_SEND_SYNCHRONOUS: \
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rc = mca_pml_ob1_send_request_start_rndv(sendreq, bml_btl, size, 0); \
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break; \
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case MCA_PML_BASE_SEND_BUFFERED: \
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rc = mca_pml_ob1_send_request_start_copy(sendreq, bml_btl, size); \
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break; \
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default: \
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if (bml_btl->btl_flags & MCA_BTL_FLAGS_SEND_INPLACE) { \
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rc = mca_pml_ob1_send_request_start_prepare(sendreq, bml_btl, size); \
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} else { \
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rc = mca_pml_ob1_send_request_start_copy(sendreq, bml_btl, size); \
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} \
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break; \
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} \
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} else { \
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size = eager_limit; \
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if(sendreq->req_send.req_send_mode == MCA_PML_BASE_SEND_BUFFERED) { \
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rc = mca_pml_ob1_send_request_start_buffered(sendreq, bml_btl, size); \
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} else if \
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(ompi_convertor_need_buffers(&sendreq->req_send.req_convertor) == false) { \
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if( 0 != (sendreq->req_rdma_cnt = mca_pml_ob1_rdma_btls( \
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sendreq->req_endpoint, \
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sendreq->req_send.req_addr, \
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sendreq->req_send.req_bytes_packed, \
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sendreq->req_rdma))) { \
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rc = mca_pml_ob1_send_request_start_rdma(sendreq, bml_btl, size); \
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} else { \
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rc = mca_pml_ob1_send_request_start_rndv(sendreq, bml_btl, size, MCA_PML_OB1_HDR_FLAGS_CONTIG); \
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} \
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} else { \
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rc = mca_pml_ob1_send_request_start_rndv(sendreq, bml_btl, size, 0); \
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} \
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} \
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} \
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} while (0)
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/*
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* Mark a send request as completed at the MPI level.
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*/
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#define MCA_PML_OB1_SEND_REQUEST_MPI_COMPLETE(sendreq) \
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do { \
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(sendreq)->req_send.req_base.req_ompi.req_status.MPI_SOURCE = \
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(sendreq)->req_send.req_base.req_comm->c_my_rank; \
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(sendreq)->req_send.req_base.req_ompi.req_status.MPI_TAG = \
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(sendreq)->req_send.req_base.req_tag; \
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(sendreq)->req_send.req_base.req_ompi.req_status.MPI_ERROR = OMPI_SUCCESS; \
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(sendreq)->req_send.req_base.req_ompi.req_status._count = \
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(sendreq)->req_send.req_bytes_packed; \
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(sendreq)->req_send.req_base.req_ompi.req_complete = true; \
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ompi_request_completed++; \
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if(ompi_request_waiting) { \
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opal_condition_broadcast(&ompi_request_cond); \
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} \
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} while(0)
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/*
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* The PML has completed a send request. Note that this request
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* may have been orphaned by the user or have already completed
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* at the MPI level.
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*/
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#define MCA_PML_OB1_SEND_REQUEST_PML_COMPLETE(sendreq) \
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do { \
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size_t r; \
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/* request completed at pml level */ \
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(sendreq)->req_send.req_base.req_pml_complete = true; \
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\
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/* return mpool resources */ \
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for(r=0; r<sendreq->req_rdma_cnt; r++) { \
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mca_mpool_base_registration_t* reg = sendreq->req_rdma[r].btl_reg; \
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if( NULL != reg ) { \
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reg->mpool->mpool_release(reg->mpool, reg); \
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} \
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} \
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sendreq->req_rdma_cnt = 0; \
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\
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/* user has already released the request so simply free it */ \
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if((sendreq)->req_send.req_base.req_free_called) { \
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/* if buffered send - release any resources */ \
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if ((sendreq)->req_send.req_send_mode == MCA_PML_BASE_SEND_BUFFERED && \
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(sendreq)->req_send.req_addr != (sendreq)->req_send.req_base.req_addr) { \
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mca_pml_base_bsend_request_fini((ompi_request_t*)sendreq); \
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} \
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MCA_PML_OB1_SEND_REQUEST_RETURN(sendreq); \
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/* is request complete at mpi level */ \
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} else if ((sendreq)->req_send.req_base.req_ompi.req_complete == false) { \
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MCA_PML_OB1_SEND_REQUEST_MPI_COMPLETE(sendreq); \
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/* buffered send - release any resources */ \
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} else if ((sendreq)->req_send.req_send_mode == MCA_PML_BASE_SEND_BUFFERED && \
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(sendreq)->req_send.req_addr != (sendreq)->req_send.req_base.req_addr) { \
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mca_pml_base_bsend_request_fini((ompi_request_t*)sendreq); \
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} \
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} while (0)
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/*
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* Advance a pending send request. Note that the initial descriptor must complete
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* and the acknowledment received before the request can complete or be scheduled.
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* However, these events may occur in either order.
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*/
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#define MCA_PML_OB1_SEND_REQUEST_ADVANCE(sendreq) \
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do { \
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/* has an acknowledgment been received */ \
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if(OPAL_THREAD_ADD32(&sendreq->req_state, 1) == 2) { \
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if(sendreq->req_bytes_delivered == sendreq->req_send.req_bytes_packed) { \
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OPAL_THREAD_LOCK(&ompi_request_lock); \
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MCA_PML_OB1_SEND_REQUEST_PML_COMPLETE(sendreq); \
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OPAL_THREAD_UNLOCK(&ompi_request_lock); \
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} else { \
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/* additional data to schedule */ \
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mca_pml_ob1_send_request_schedule(sendreq); \
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} \
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} \
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} while (0)
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/*
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* Release resources associated with a request
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*/
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#define MCA_PML_OB1_SEND_REQUEST_RETURN(sendreq) \
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{ \
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/* Let the base handle the reference counts */ \
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MCA_PML_BASE_SEND_REQUEST_FINI((&(sendreq)->req_send)); \
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OMPI_FREE_LIST_RETURN( \
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&mca_pml_ob1.send_requests, (opal_list_item_t*)sendreq); \
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}
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/*
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* Update bytes delivered on request based on supplied descriptor
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*/
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#define MCA_PML_OB1_SEND_REQUEST_SET_BYTES_DELIVERED(sendreq, descriptor, hdrlen) \
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do { \
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size_t i; \
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mca_btl_base_segment_t* segments = descriptor->des_src; \
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\
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for(i=0; i<descriptor->des_src_cnt; i++) { \
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sendreq->req_bytes_delivered += segments[i].seg_len; \
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} \
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sendreq->req_bytes_delivered -= hdrlen; \
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\
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} while(0)
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/*
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* Attempt to process any pending requests
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*/
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#define MCA_PML_OB1_SEND_REQUEST_PROCESS_PENDING() \
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do { \
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/* advance pending requests */ \
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while(opal_list_get_size(&mca_pml_ob1.send_pending)) { \
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mca_pml_ob1_send_request_t* sendreq; \
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OPAL_THREAD_LOCK(&mca_pml_ob1.lock); \
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sendreq = (mca_pml_ob1_send_request_t*) \
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opal_list_remove_first(&mca_pml_ob1.send_pending); \
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OPAL_THREAD_UNLOCK(&mca_pml_ob1.lock); \
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if(NULL == sendreq) \
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break; \
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mca_pml_ob1_send_request_schedule(sendreq); \
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} \
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} while (0)
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/**
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* Start the specified request
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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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int mca_pml_ob1_send_request_start_copy(
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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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int mca_pml_ob1_send_request_start_prepare(
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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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int mca_pml_ob1_send_request_start_rdma(
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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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int mca_pml_ob1_send_request_start_rndv(
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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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int flags);
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/**
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* Schedule additional fragments
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*/
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int mca_pml_ob1_send_request_schedule(
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mca_pml_ob1_send_request_t* sendreq);
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/**
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* Completion callback on match header
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* Cache descriptor.
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*/
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void mca_pml_ob1_match_completion_cache(
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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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* Completion callback on match header
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* Free descriptor.
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*/
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void mca_pml_ob1_match_completion_free(
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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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* Initiate a put scheduled by the receiver.
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*/
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void mca_pml_ob1_send_request_put(
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mca_pml_ob1_send_request_t* sendreq,
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mca_btl_base_module_t* btl,
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mca_pml_ob1_rdma_hdr_t* hdr);
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#if defined(c_plusplus) || defined(__cplusplus)
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}
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#endif
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#endif
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