58cd591d3b
We support all the events in the PERUSE specifications, but right now only one event of each type can be attached to a communicator. This will be worked out in the future. The events were places in such a way, that we will be able to measure the overhead for our threading implementation (the cost of the synchronization objects). This commit was SVN r9500.
756 строки
27 KiB
C
756 строки
27 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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#include "ompi_config.h"
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#include "opal/class/opal_list.h"
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#include "opal/threads/mutex.h"
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#include "ompi/constants.h"
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#include "ompi/communicator/communicator.h"
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#include "ompi/mca/pml/pml.h"
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#include "pml_ob1.h"
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#include "pml_ob1_comm.h"
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#include "pml_ob1_recvfrag.h"
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#include "pml_ob1_recvreq.h"
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#include "pml_ob1_sendreq.h"
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#include "pml_ob1_hdr.h"
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#include "ompi/datatype/dt_arch.h"
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#include "ompi/peruse/peruse-internal.h"
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OBJ_CLASS_INSTANCE(
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mca_pml_ob1_buffer_t,
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opal_list_item_t,
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NULL,
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NULL
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);
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OBJ_CLASS_INSTANCE(
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mca_pml_ob1_recv_frag_t,
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opal_list_item_t,
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NULL,
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NULL
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);
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/**
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* Callback from BTL on receive.
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*/
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void mca_pml_ob1_recv_frag_callback(
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mca_btl_base_module_t* btl,
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mca_btl_base_tag_t tag,
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mca_btl_base_descriptor_t* des,
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void* cbdata)
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{
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mca_btl_base_segment_t* segments = des->des_dst;
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mca_pml_ob1_hdr_t* hdr = (mca_pml_ob1_hdr_t*)segments->seg_addr.pval;
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if(segments->seg_len < sizeof(mca_pml_ob1_common_hdr_t)) {
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return;
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}
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/* hdr_type and hdr_flags are uint8_t, so no endian problems */
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switch(hdr->hdr_common.hdr_type) {
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case MCA_PML_OB1_HDR_TYPE_MATCH:
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{
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#if !defined(WORDS_BIGENDIAN) && OMPI_ENABLE_HETEROGENEOUS_SUPPORT
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if (hdr->hdr_common.hdr_flags & MCA_PML_OB1_HDR_FLAGS_NBO) {
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MCA_PML_OB1_MATCH_HDR_NTOH(hdr->hdr_match);
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}
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#endif
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mca_pml_ob1_recv_frag_match(btl, &hdr->hdr_match, segments,des->des_dst_cnt);
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break;
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}
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case MCA_PML_OB1_HDR_TYPE_RNDV:
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{
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#if !defined(WORDS_BIGENDIAN) && OMPI_ENABLE_HETEROGENEOUS_SUPPORT
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if (hdr->hdr_common.hdr_flags & MCA_PML_OB1_HDR_FLAGS_NBO) {
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MCA_PML_OB1_RNDV_HDR_NTOH(hdr->hdr_rndv);
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}
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#endif
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mca_pml_ob1_recv_frag_match(btl, &hdr->hdr_match, segments,des->des_dst_cnt);
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break;
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}
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case MCA_PML_OB1_HDR_TYPE_RGET:
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{
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#if !defined(WORDS_BIGENDIAN) && OMPI_ENABLE_HETEROGENEOUS_SUPPORT
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/* RDMA is currently disabled by bml if arch doesn't
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match, so this shouldn't be needed. here to make sure
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we remember if we ever change the bml. */
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assert(0 == (hdr->hdr_common.hdr_flags & MCA_PML_OB1_HDR_FLAGS_NBO));
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#endif
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mca_pml_ob1_recv_frag_match(btl, &hdr->hdr_match, segments,des->des_dst_cnt);
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break;
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}
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case MCA_PML_OB1_HDR_TYPE_ACK:
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{
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mca_pml_ob1_send_request_t* sendreq;
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#if !defined(WORDS_BIGENDIAN) && OMPI_ENABLE_HETEROGENEOUS_SUPPORT
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if (hdr->hdr_common.hdr_flags & MCA_PML_OB1_HDR_FLAGS_NBO) {
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MCA_PML_OB1_ACK_HDR_NTOH(hdr->hdr_ack);
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}
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#endif
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sendreq = (mca_pml_ob1_send_request_t*)
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hdr->hdr_ack.hdr_src_req.pval;
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sendreq->req_recv = hdr->hdr_ack.hdr_dst_req;
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sendreq->req_rdma_offset = hdr->hdr_ack.hdr_rdma_offset;
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MCA_PML_OB1_SEND_REQUEST_ADVANCE(sendreq);
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break;
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}
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case MCA_PML_OB1_HDR_TYPE_FRAG:
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{
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mca_pml_ob1_recv_request_t* recvreq;
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#if !defined(WORDS_BIGENDIAN) && OMPI_ENABLE_HETEROGENEOUS_SUPPORT
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if (hdr->hdr_common.hdr_flags & MCA_PML_OB1_HDR_FLAGS_NBO) {
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MCA_PML_OB1_FRAG_HDR_NTOH(hdr->hdr_frag);
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}
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#endif
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recvreq = (mca_pml_ob1_recv_request_t*)
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hdr->hdr_frag.hdr_dst_req.pval;
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mca_pml_ob1_recv_request_progress(recvreq,btl,segments,des->des_dst_cnt);
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break;
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}
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case MCA_PML_OB1_HDR_TYPE_PUT:
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{
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mca_pml_ob1_send_request_t* sendreq;
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#if !defined(WORDS_BIGENDIAN) && OMPI_ENABLE_HETEROGENEOUS_SUPPORT
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/* RDMA is currently disabled by bml if arch doesn't
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match, so this shouldn't be needed. here to make sure
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we remember if we ever change the bml. */
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assert(0 == (hdr->hdr_common.hdr_flags & MCA_PML_OB1_HDR_FLAGS_NBO));
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#endif
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sendreq = (mca_pml_ob1_send_request_t*)
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hdr->hdr_rdma.hdr_req.pval;
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mca_pml_ob1_send_request_put(sendreq,btl,&hdr->hdr_rdma);
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break;
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}
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case MCA_PML_OB1_HDR_TYPE_FIN:
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{
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mca_btl_base_descriptor_t* rdma;
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#if !defined(WORDS_BIGENDIAN) && OMPI_ENABLE_HETEROGENEOUS_SUPPORT
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if (hdr->hdr_common.hdr_flags & MCA_PML_OB1_HDR_FLAGS_NBO) {
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MCA_PML_OB1_FIN_HDR_NTOH(hdr->hdr_fin);
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}
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#endif
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rdma = (mca_btl_base_descriptor_t*)
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hdr->hdr_fin.hdr_des.pval;
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rdma->des_cbfunc(btl, NULL, rdma, OMPI_SUCCESS);
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break;
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}
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default:
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break;
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}
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}
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/**
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* Try and match the incoming message fragment to a generic
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* list of receives
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*
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* @param hdr Matching data from received fragment (IN)
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*
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* @param generic_receives Pointer to the receive list used for
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* matching purposes. (IN)
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*
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* @return Matched receive
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*
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* This routine assumes that the appropriate matching locks are
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* set by the upper level routine.
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*/
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#define MCA_PML_OB1_MATCH_GENERIC_RECEIVES(hdr,generic_receives,proc,return_match) \
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do { \
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/* local variables */ \
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mca_pml_ob1_recv_request_t *generic_recv; \
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int recv_tag, frag_tag = hdr->hdr_tag; \
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\
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/* Loop over the receives. */ \
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for( generic_recv = (mca_pml_ob1_recv_request_t *) \
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opal_list_get_first(generic_receives); \
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generic_recv != (mca_pml_ob1_recv_request_t *) \
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opal_list_get_end(generic_receives); \
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generic_recv = (mca_pml_ob1_recv_request_t *) \
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((opal_list_item_t *)generic_recv)->opal_list_next) { \
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/* Check for a match */ \
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recv_tag = generic_recv->req_recv.req_base.req_tag; \
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if ( (frag_tag == recv_tag) || \
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( (recv_tag == OMPI_ANY_TAG) && (0 <= frag_tag) ) ) { \
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\
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generic_recv->req_recv.req_base.req_proc = proc->proc_ompi; \
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/* Match made */ \
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return_match = generic_recv; \
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\
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/* remove descriptor from posted specific ireceive list */ \
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opal_list_remove_item(generic_receives, \
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(opal_list_item_t *)generic_recv); \
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\
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break; \
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} \
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} \
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} while(0)
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/**
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* Try and match the incoming message fragment to the list of
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* "wild" receives
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*
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* @param hdr Matching data from recived fragment (IN)
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*
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* @param pml_comm Pointer to the communicator structure used for
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* matching purposes. (IN)
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*
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* @return Matched receive
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*
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* This routine assumes that the appropriate matching locks are
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* set by the upper level routine.
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*/
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#define MCA_PML_OB1_CHECK_WILD_RECEIVES_FOR_MATCH(hdr,comm,proc,return_match) \
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do { \
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/* local parameters */ \
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opal_list_t* wild_receives = &comm->wild_receives; \
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MCA_PML_OB1_MATCH_GENERIC_RECEIVES(hdr,wild_receives,proc,return_match); \
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} while(0)
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/**
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* Try and match the incoming message fragment to the list of
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* "specific" receives
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*
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* @param hdr Matching data from recived fragment (IN)
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*
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* @param comm Pointer to the communicator structure used for
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* matching purposes. (IN)
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*
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* @return Matched receive
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*
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* This routine assumes that the appropriate matching locks are
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* set by the upper level routine.
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*/
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#define MCA_PML_OB1_CHECK_SPECIFIC_RECEIVES_FOR_MATCH(hdr,comm,proc,return_match) \
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do { \
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/* local variables */ \
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opal_list_t* specific_receives = &proc->specific_receives; \
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MCA_PML_OB1_MATCH_GENERIC_RECEIVES(hdr,specific_receives,proc,return_match); \
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} while(0)
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/**
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* Try and match the incoming message fragment to the list of
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* "wild" receives and "specific" receives. Used when both types
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* of receives have been posted, i.e. when we need to coordinate
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* between multiple lists to make sure ordered delivery occurs.
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*
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* @param hdr Matching data from recived fragment (IN)
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*
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* @param comm Pointer to the communicator structure used for
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* matching purposes. (IN)
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*
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* @return Matched receive
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*
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* This routine assumes that the appropriate matching locks are
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* set by the upper level routine.
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*/
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#define MCA_PML_OB1_CHECK_SPECIFIC_AND_WILD_RECEIVES_FOR_MATCH( \
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hdr,comm,proc,return_match) \
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do { \
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/* local variables */ \
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mca_pml_ob1_recv_request_t *specific_recv, *wild_recv; \
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mca_pml_sequence_t wild_recv_seq, specific_recv_seq; \
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int frag_tag, wild_recv_tag, specific_recv_tag; \
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\
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/* initialization */ \
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frag_tag=hdr->hdr_tag; \
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\
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/* \
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* We know that when this is called, both specific and wild irecvs \
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* have been posted. \
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*/ \
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specific_recv = (mca_pml_ob1_recv_request_t *) \
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opal_list_get_first(&(proc)->specific_receives); \
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wild_recv = (mca_pml_ob1_recv_request_t *) \
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opal_list_get_first(&comm->wild_receives); \
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\
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specific_recv_seq = specific_recv->req_recv.req_base.req_sequence; \
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wild_recv_seq = wild_recv->req_recv.req_base.req_sequence; \
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\
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while (true) { \
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if (wild_recv_seq < specific_recv_seq) { \
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/* \
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* wild recv is earlier than the specific one. \
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*/ \
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/* \
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* try and match \
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*/ \
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wild_recv_tag = wild_recv->req_recv.req_base.req_tag; \
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if ( (frag_tag == wild_recv_tag) || \
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( (wild_recv_tag == OMPI_ANY_TAG) && (0 <= frag_tag) ) ) { \
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/* \
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* Match made \
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*/ \
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return_match=wild_recv; \
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\
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/* remove this recv from the wild receive queue */ \
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opal_list_remove_item(&comm->wild_receives, \
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(opal_list_item_t *)wild_recv); \
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\
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PERUSE_TRACE_COMM_EVENT (PERUSE_COMM_REQ_REMOVE_FROM_POSTED_Q, \
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&(wild_recv->req_recv.req_base), \
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PERUSE_RECV); \
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\
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break; \
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} \
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\
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/* \
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* No match, go to the next. \
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*/ \
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wild_recv=(mca_pml_ob1_recv_request_t *) \
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((opal_list_item_t *)wild_recv)->opal_list_next; \
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\
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/* \
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* If that was the last wild one, just look at the \
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* rest of the specific ones. \
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*/ \
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if (wild_recv == (mca_pml_ob1_recv_request_t *) \
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opal_list_get_end(&comm->wild_receives) ) \
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{ \
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MCA_PML_OB1_CHECK_SPECIFIC_RECEIVES_FOR_MATCH(hdr, comm, proc, return_match); \
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break; \
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} \
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\
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/* \
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* Get the sequence number for this recv, and go \
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* back to the top of the loop. \
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*/ \
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wild_recv_seq = wild_recv->req_recv.req_base.req_sequence; \
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\
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} else { \
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/* \
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* specific recv is earlier than the wild one. \
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*/ \
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specific_recv_tag=specific_recv->req_recv.req_base.req_tag; \
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if ( (frag_tag == specific_recv_tag) || \
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( (specific_recv_tag == OMPI_ANY_TAG) && (0<=frag_tag)) ) \
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{ \
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/* \
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* Match made \
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*/ \
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return_match = specific_recv; \
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/* remove descriptor from specific receive list */ \
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opal_list_remove_item(&(proc)->specific_receives, \
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(opal_list_item_t *)specific_recv); \
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\
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PERUSE_TRACE_COMM_EVENT (PERUSE_COMM_REQ_REMOVE_FROM_POSTED_Q, \
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&(specific_recv->req_recv.req_base), \
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PERUSE_RECV); \
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\
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break; \
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} \
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\
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/* \
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* No match, go on to the next specific irecv. \
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*/ \
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specific_recv = (mca_pml_ob1_recv_request_t *) \
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((opal_list_item_t *)specific_recv)->opal_list_next; \
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\
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/* \
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* If that was the last specific irecv, process the \
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* rest of the wild ones. \
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*/ \
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if (specific_recv == (mca_pml_ob1_recv_request_t *) \
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opal_list_get_end(&(proc)->specific_receives)) \
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{ \
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MCA_PML_OB1_CHECK_WILD_RECEIVES_FOR_MATCH(hdr, comm, proc, return_match); \
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break; \
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} \
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/* \
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* Get the sequence number for this recv, and go \
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* back to the top of the loop. \
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*/ \
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specific_recv_seq = specific_recv->req_recv.req_base.req_sequence; \
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} \
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} \
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} while(0)
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/*
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* Specialized matching routines for internal use only.
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*/
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static bool mca_pml_ob1_check_cantmatch_for_match(
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opal_list_t *additional_matches,
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mca_pml_ob1_comm_t* comm,
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mca_pml_ob1_comm_proc_t *proc);
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/**
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* RCS/CTS receive side matching
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*
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* @param hdr list of parameters needed for matching
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* This list is also embeded in frag,
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* but this allows to save a memory copy when
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* a match is made in this routine. (IN)
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* @param frag pointer to receive fragment which we want
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* to match (IN/OUT). If a match is not made,
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* hdr is copied to frag.
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* @param match_made parameter indicating if we matched frag/
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* hdr (OUT)
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* @param additional_matches if a match is made with frag, we
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* may be able to match fragments that previously
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* have arrived out-of-order. If this is the
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* case, the associated fragment descriptors are
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* put on this list for further processing. (OUT)
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*
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* @return OMPI error code
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*
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* This routine is used to try and match a newly arrived message fragment
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* to pre-posted receives. The following assumptions are made
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* - fragments are received out of order
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* - for long messages, e.g. more than one fragment, a RTS/CTS algorithm
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* is used.
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* - 2nd and greater fragments include a receive descriptor pointer
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* - fragments may be dropped
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* - fragments may be corrupt
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* - this routine may be called simultaneously by more than one thread
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*/
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int mca_pml_ob1_recv_frag_match(
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mca_btl_base_module_t *btl,
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mca_pml_ob1_match_hdr_t *hdr,
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mca_btl_base_segment_t* segments,
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size_t num_segments)
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{
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/* local variables */
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uint16_t next_msg_seq_expected, frag_msg_seq;
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ompi_communicator_t *comm_ptr;
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mca_pml_ob1_recv_request_t *match = NULL;
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mca_pml_ob1_comm_t *comm;
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mca_pml_ob1_comm_proc_t *proc;
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bool additional_match=false;
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opal_list_t additional_matches;
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int rc;
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/* communicator pointer */
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comm_ptr=ompi_comm_lookup(hdr->hdr_ctx);
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comm=(mca_pml_ob1_comm_t *)comm_ptr->c_pml_comm;
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/* source sequence number */
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frag_msg_seq = hdr->hdr_seq;
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proc = comm->procs + hdr->hdr_src;
|
|
|
|
/**
|
|
* We generate the MSG_ARRIVED event as soon as the PML is aware of a matching
|
|
* fragment arrival. Independing if it is received on the correct order or not.
|
|
* This will allow the tools to figure out if the messages are not received in the
|
|
* correct order (if multiple network interfaces).
|
|
*/
|
|
PERUSE_TRACE_MSG_EVENT( PERUSE_COMM_MSG_ARRIVED, comm_ptr,
|
|
hdr->hdr_src, hdr->hdr_tag, PERUSE_RECV);
|
|
|
|
/* get next expected message sequence number - if threaded
|
|
* run, lock to make sure that if another thread is processing
|
|
* a frag from the same message a match is made only once.
|
|
* Also, this prevents other posted receives (for a pair of
|
|
* end points) from being processed, and potentially "loosing"
|
|
* the fragment.
|
|
*/
|
|
OPAL_THREAD_LOCK(&comm->matching_lock);
|
|
|
|
/* get sequence number of next message that can be processed */
|
|
next_msg_seq_expected = (uint16_t)proc->expected_sequence;
|
|
if (frag_msg_seq == next_msg_seq_expected) {
|
|
|
|
/*
|
|
* This is the sequence number we were expecting,
|
|
* so we can try matching it to already posted
|
|
* receives.
|
|
*/
|
|
|
|
/* We're now expecting the next sequence number. */
|
|
(proc->expected_sequence)++;
|
|
|
|
/**
|
|
* We generate the SEARCH_POSTED_QUEUE only when the message is received
|
|
* in the correct sequence. Otherwise, we delay the event generation until
|
|
* we reach the correct sequence number.
|
|
*/
|
|
PERUSE_TRACE_MSG_EVENT( PERUSE_COMM_SEARCH_POSTED_Q_BEGIN, comm_ptr,
|
|
hdr->hdr_src, hdr->hdr_tag, PERUSE_RECV);
|
|
|
|
rematch:
|
|
|
|
/*
|
|
* figure out what sort of matching logic to use, if need to
|
|
* look only at "specific" receives, or "wild" receives,
|
|
* or if we need to traverse both sets at the same time.
|
|
*/
|
|
if (opal_list_get_size(&proc->specific_receives) == 0 ){
|
|
/*
|
|
* There are only wild irecvs, so specialize the algorithm.
|
|
*/
|
|
MCA_PML_OB1_CHECK_WILD_RECEIVES_FOR_MATCH(hdr, comm, proc, match);
|
|
|
|
} else if (opal_list_get_size(&comm->wild_receives) == 0 ) {
|
|
/*
|
|
* There are only specific irecvs, so specialize the algorithm.
|
|
*/
|
|
MCA_PML_OB1_CHECK_SPECIFIC_RECEIVES_FOR_MATCH(hdr, comm, proc, match);
|
|
} else {
|
|
/*
|
|
* There are some of each.
|
|
*/
|
|
MCA_PML_OB1_CHECK_SPECIFIC_AND_WILD_RECEIVES_FOR_MATCH(hdr, comm, proc, match);
|
|
}
|
|
|
|
/* if match found, process data */
|
|
if (match) {
|
|
|
|
/*
|
|
* update delivered sequence number information, if needed.
|
|
*/
|
|
if( (match->req_recv.req_base.req_type == MCA_PML_REQUEST_PROBE) ) {
|
|
|
|
/* complete the probe */
|
|
mca_pml_ob1_recv_request_matched_probe(match,btl,segments,num_segments);
|
|
|
|
/* attempt to match actual request */
|
|
match = NULL;
|
|
goto rematch;
|
|
}
|
|
} else {
|
|
|
|
/* if no match found, place on unexpected queue */
|
|
mca_pml_ob1_recv_frag_t* frag;
|
|
MCA_PML_OB1_RECV_FRAG_ALLOC(frag, rc);
|
|
if(OMPI_SUCCESS != rc) {
|
|
OPAL_THREAD_UNLOCK(&comm->matching_lock);
|
|
/**
|
|
* As we return from the match function, we should generate the expected event.
|
|
*/
|
|
PERUSE_TRACE_MSG_EVENT( PERUSE_COMM_SEARCH_POSTED_Q_END, comm_ptr,
|
|
hdr->hdr_src, hdr->hdr_tag, PERUSE_RECV);
|
|
|
|
return rc;
|
|
}
|
|
MCA_PML_OB1_RECV_FRAG_INIT(frag,hdr,segments,num_segments,btl);
|
|
opal_list_append( &proc->unexpected_frags, (opal_list_item_t *)frag );
|
|
}
|
|
|
|
/**
|
|
* The match is over. We generate the SEARCH_POSTED_Q_END here, before going
|
|
* into the mca_pml_ob1_check_cantmatch_for_match so we can make a difference
|
|
* for the searching time for all messages.
|
|
*/
|
|
PERUSE_TRACE_MSG_EVENT( PERUSE_COMM_SEARCH_POSTED_Q_END, comm_ptr,
|
|
hdr->hdr_src, hdr->hdr_tag, PERUSE_RECV);
|
|
|
|
/*
|
|
* Now that new message has arrived, check to see if
|
|
* any fragments on the c_c_frags_cant_match list
|
|
* may now be used to form new matchs
|
|
*/
|
|
if (0 < opal_list_get_size(&proc->frags_cant_match)) {
|
|
additional_match = mca_pml_ob1_check_cantmatch_for_match(&additional_matches,comm,proc);
|
|
}
|
|
|
|
} else {
|
|
|
|
/*
|
|
* This message comes after the next expected, so it
|
|
* is ahead of sequence. Save it for later.
|
|
*/
|
|
mca_pml_ob1_recv_frag_t* frag;
|
|
MCA_PML_OB1_RECV_FRAG_ALLOC(frag, rc);
|
|
if(OMPI_SUCCESS != rc) {
|
|
OPAL_THREAD_UNLOCK(&comm->matching_lock);
|
|
return rc;
|
|
}
|
|
MCA_PML_OB1_RECV_FRAG_INIT(frag,hdr,segments,num_segments,btl);
|
|
opal_list_append(&proc->frags_cant_match, (opal_list_item_t *)frag);
|
|
|
|
}
|
|
/* release matching lock before processing fragment */
|
|
OPAL_THREAD_UNLOCK(&comm->matching_lock);
|
|
|
|
if(match != NULL) {
|
|
mca_pml_ob1_recv_request_progress(match,btl,segments,num_segments);
|
|
#if OMPI_WANT_PERUSE
|
|
} else {
|
|
PERUSE_TRACE_MSG_EVENT( PERUSE_COMM_MSG_INSERT_IN_UNEX_Q, comm_ptr,
|
|
hdr->hdr_src, hdr->hdr_tag, PERUSE_RECV);
|
|
#endif /* OMPI_WANT_PERUSE */
|
|
}
|
|
if(additional_match) {
|
|
opal_list_item_t* item;
|
|
while(NULL != (item = opal_list_remove_first(&additional_matches))) {
|
|
mca_pml_ob1_recv_frag_t* frag = (mca_pml_ob1_recv_frag_t*)item;
|
|
mca_pml_ob1_recv_request_progress( frag->request, frag->btl, frag->segments,
|
|
frag->num_segments );
|
|
MCA_PML_OB1_RECV_FRAG_RETURN(frag);
|
|
}
|
|
}
|
|
return OMPI_SUCCESS;
|
|
}
|
|
|
|
|
|
/**
|
|
* Scan the list of frags that came in ahead of time to see if any
|
|
* can be processed at this time. If they can, try and match the
|
|
* frags.
|
|
*
|
|
* @param additional_matches List to hold new matches with fragments
|
|
* from the c_frags_cant_match list. (IN/OUT)
|
|
*
|
|
* @param pml_comm Pointer to the communicator structure used for
|
|
* matching purposes. (IN)
|
|
*
|
|
* This routine assumes that the appropriate matching locks are
|
|
* set by the upper level routine.
|
|
*/
|
|
|
|
static bool mca_pml_ob1_check_cantmatch_for_match(
|
|
opal_list_t *additional_matches,
|
|
mca_pml_ob1_comm_t* comm,
|
|
mca_pml_ob1_comm_proc_t *proc)
|
|
{
|
|
/* local parameters */
|
|
int match_found;
|
|
uint16_t next_msg_seq_expected, frag_seq;
|
|
mca_pml_ob1_recv_frag_t *frag;
|
|
bool match_made = false;
|
|
|
|
/*
|
|
* Loop over all the out of sequence messages. No ordering is assumed
|
|
* in the c_frags_cant_match list.
|
|
*/
|
|
|
|
match_found = 1;
|
|
while ((0 < opal_list_get_size(&proc->frags_cant_match)) && match_found) {
|
|
|
|
/* initialize match flag for this search */
|
|
match_found = 0;
|
|
|
|
/* get sequence number of next message that can be processed */
|
|
next_msg_seq_expected = proc->expected_sequence;
|
|
|
|
/* search the list for a fragment from the send with sequence
|
|
* number next_msg_seq_expected
|
|
*/
|
|
for(frag = (mca_pml_ob1_recv_frag_t *)
|
|
opal_list_get_first(&proc->frags_cant_match);
|
|
frag != (mca_pml_ob1_recv_frag_t *)
|
|
opal_list_get_end(&proc->frags_cant_match);
|
|
frag = (mca_pml_ob1_recv_frag_t *)
|
|
opal_list_get_next(frag))
|
|
{
|
|
/*
|
|
* If the message has the next expected seq from that proc...
|
|
*/
|
|
frag_seq=frag->hdr.hdr_match.hdr_seq;
|
|
if (frag_seq == next_msg_seq_expected) {
|
|
mca_pml_ob1_match_hdr_t* hdr = &frag->hdr.hdr_match;
|
|
mca_pml_ob1_recv_request_t *match = NULL;
|
|
|
|
/* We're now expecting the next sequence number. */
|
|
(proc->expected_sequence)++;
|
|
|
|
/* signal that match was made */
|
|
match_found = 1;
|
|
|
|
/*
|
|
* remove frag from list
|
|
*/
|
|
opal_list_remove_item(&proc->frags_cant_match,
|
|
(opal_list_item_t *)frag);
|
|
|
|
rematch:
|
|
/*
|
|
* figure out what sort of matching logic to use, if need to
|
|
* look only at "specific" receives, or "wild" receives,
|
|
* or if we need to traverse both sets at the same time.
|
|
*/
|
|
proc = comm->procs + hdr->hdr_src;
|
|
if (opal_list_get_size(&proc->specific_receives) == 0 ) {
|
|
/*
|
|
* There are only wild irecvs, so specialize the algorithm.
|
|
*/
|
|
MCA_PML_OB1_CHECK_WILD_RECEIVES_FOR_MATCH(hdr, comm, proc, match);
|
|
} else if (opal_list_get_size(&comm->wild_receives) == 0 ) {
|
|
/*
|
|
* There are only specific irecvs, so specialize the algorithm.
|
|
*/
|
|
MCA_PML_OB1_CHECK_SPECIFIC_RECEIVES_FOR_MATCH(hdr, comm, proc, match);
|
|
} else {
|
|
/*
|
|
* There are some of each.
|
|
*/
|
|
MCA_PML_OB1_CHECK_SPECIFIC_AND_WILD_RECEIVES_FOR_MATCH(hdr, comm, proc, match);
|
|
|
|
}
|
|
|
|
/* if match found, process data */
|
|
if (match) {
|
|
|
|
/*
|
|
* If this was a probe need to queue fragment on unexpected list
|
|
*/
|
|
if( (match->req_recv.req_base.req_type == MCA_PML_REQUEST_PROBE) ) {
|
|
|
|
/* complete the probe */
|
|
mca_pml_ob1_recv_request_matched_probe(match,frag->btl,frag->segments,frag->num_segments);
|
|
|
|
/* retry the match */
|
|
match = NULL;
|
|
goto rematch;
|
|
|
|
} else {
|
|
|
|
/* associate the receive descriptor with the fragment
|
|
* descriptor */
|
|
frag->request=match;
|
|
|
|
/* add this fragment descriptor to the list of
|
|
* descriptors to be processed later
|
|
*/
|
|
if(match_made == false) {
|
|
match_made = true;
|
|
OBJ_CONSTRUCT(additional_matches, opal_list_t);
|
|
}
|
|
opal_list_append(additional_matches, (opal_list_item_t *)frag);
|
|
}
|
|
|
|
} else {
|
|
|
|
/* if no match found, place on unexpected queue */
|
|
opal_list_append( &proc->unexpected_frags, (opal_list_item_t *)frag);
|
|
}
|
|
|
|
/* c_frags_cant_match is not an ordered list, so exit loop
|
|
* and re-start search for next sequence number */
|
|
break;
|
|
|
|
} /* end if (frag_seq == next_msg_seq_expected) */
|
|
|
|
} /* end for (frag) loop */
|
|
|
|
} /* end while loop */
|
|
|
|
return match_made;
|
|
}
|
|
|