e9706e6db0
and add a new macro that can be used for both sends and receives. Move to atomic operations to manage the length of the sended or received status. There is one instance where the atomic operation is not required as the code can cannot be executed in same time by 2 differents threads. This commit was SVN r8933.
402 строки
23 KiB
C
402 строки
23 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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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_send.req_base.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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* 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*) \
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sendreq->req_send.req_base.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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size_t eager_limit; \
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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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eager_limit = bml_btl->btl_eager_limit - sizeof(mca_pml_ob1_hdr_t); \
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\
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/* shortcut for zero byte */ \
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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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case MCA_PML_BASE_SEND_COMPLETE: \
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rc = mca_pml_ob1_send_request_start_prepare(sendreq, bml_btl, size); \
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break; \
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default: \
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if (size == 0) { \
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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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} else 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, \
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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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} 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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MCA_PML_BASE_REQUEST_MPI_COMPLETE( &((sendreq)->req_send.req_base.req_ompi) ); \
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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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assert( false == (sendreq)->req_send.req_base.req_pml_complete ); \
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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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* 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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