633 строки
23 KiB
C
633 строки
23 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University.
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* All rights reserved.
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* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
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* All rights reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "ompi_config.h"
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#include "mca/pml/pml.h"
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#include "mca/btl/btl.h"
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#include "mca/mpool/mpool.h"
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#include "pml_ob1_comm.h"
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#include "pml_ob1_recvreq.h"
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#include "pml_ob1_recvfrag.h"
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#include "pml_ob1_sendreq.h"
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static mca_pml_ob1_recv_frag_t* mca_pml_ob1_recv_request_match_specific_proc(
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mca_pml_ob1_recv_request_t* request, mca_pml_ob1_comm_proc_t* proc);
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static int mca_pml_ob1_recv_request_fini(struct ompi_request_t** request)
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{
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MCA_PML_OB1_FINI(request);
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return OMPI_SUCCESS;
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}
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static int mca_pml_ob1_recv_request_free(struct ompi_request_t** request)
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{
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MCA_PML_OB1_FREE(request);
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return OMPI_SUCCESS;
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}
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static int mca_pml_ob1_recv_request_cancel(struct ompi_request_t* ompi_request, int complete)
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{
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mca_pml_ob1_recv_request_t* request = (mca_pml_ob1_recv_request_t*)ompi_request;
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mca_pml_ob1_comm_t* comm = request->req_recv.req_base.req_comm->c_pml_comm;
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if( true == ompi_request->req_complete ) { /* way to late to cancel this one */
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return OMPI_SUCCESS;
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}
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/* The rest should be protected behind the match logic lock */
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OPAL_THREAD_LOCK(&comm->matching_lock);
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if( OMPI_ANY_TAG == ompi_request->req_status.MPI_TAG ) { /* the match has not been already done */
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if( request->req_recv.req_base.req_peer == OMPI_ANY_SOURCE ) {
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opal_list_remove_item( &comm->wild_receives, (opal_list_item_t*)request );
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} else {
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mca_pml_ob1_comm_proc_t* proc = comm->procs + request->req_recv.req_base.req_peer;
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opal_list_remove_item(&proc->specific_receives, (opal_list_item_t*)request);
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}
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}
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OPAL_THREAD_UNLOCK(&comm->matching_lock);
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OPAL_THREAD_LOCK(&ompi_request_lock);
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ompi_request->req_status._cancelled = true;
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ompi_request->req_complete = true; /* mark it as completed so all the test/wait functions
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* on this particular request will finish */
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/* Now we have a problem if we are in a multi-threaded environment. We shou ld
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* broadcast the condition on the request in order to allow the other threa ds
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* to complete their test/wait functions.
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*/
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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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OPAL_THREAD_UNLOCK(&ompi_request_lock);
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return OMPI_SUCCESS;
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}
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static void mca_pml_ob1_recv_request_construct(mca_pml_ob1_recv_request_t* request)
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{
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request->req_recv.req_base.req_type = MCA_PML_REQUEST_RECV;
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request->req_recv.req_base.req_ompi.req_fini = mca_pml_ob1_recv_request_fini;
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request->req_recv.req_base.req_ompi.req_free = mca_pml_ob1_recv_request_free;
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request->req_recv.req_base.req_ompi.req_cancel = mca_pml_ob1_recv_request_cancel;
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}
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static void mca_pml_ob1_recv_request_destruct(mca_pml_ob1_recv_request_t* request)
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{
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}
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OBJ_CLASS_INSTANCE(
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mca_pml_ob1_recv_request_t,
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mca_pml_base_recv_request_t,
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mca_pml_ob1_recv_request_construct,
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mca_pml_ob1_recv_request_destruct);
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/*
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* Release resources.
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*/
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static void mca_pml_ob1_send_ctl_complete(
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mca_btl_base_module_t* btl,
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struct mca_btl_base_endpoint_t* ep,
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struct mca_btl_base_descriptor_t* des,
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int status)
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{
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mca_pml_ob1_endpoint_t* endpoint = (mca_pml_ob1_endpoint_t*)des->des_cbdata;
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MCA_PML_OB1_ENDPOINT_DES_RETURN(endpoint, des);
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}
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/*
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*
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*/
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static void mca_pml_ob1_recv_request_ack(
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mca_pml_ob1_recv_request_t* recvreq,
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mca_pml_ob1_rendezvous_hdr_t* hdr)
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{
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mca_pml_ob1_proc_t* proc = recvreq->req_proc;
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mca_pml_ob1_endpoint_t* ep;
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mca_btl_base_descriptor_t* des;
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mca_pml_ob1_recv_frag_t* frag;
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mca_pml_ob1_ack_hdr_t* ack;
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int rc;
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/* if this hasn't been initialized yet - this is a synchronous send */
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if(NULL == proc) {
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ompi_proc_t *ompi_proc = ompi_comm_peer_lookup(
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recvreq->req_recv.req_base.req_comm, hdr->hdr_match.hdr_src);
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proc = recvreq->req_proc = ompi_proc->proc_pml;
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}
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ep = mca_pml_ob1_ep_array_get_next(&proc->btl_eager);
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/* allocate descriptor */
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MCA_PML_OB1_ENDPOINT_DES_ALLOC(ep, des, sizeof(mca_pml_ob1_ack_hdr_t));
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if(NULL == des) {
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goto retry;
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}
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/* fill out header */
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ack = (mca_pml_ob1_ack_hdr_t*)des->des_src->seg_addr.pval;
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ack->hdr_common.hdr_type = MCA_PML_OB1_HDR_TYPE_ACK;
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ack->hdr_common.hdr_flags = 0;
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ack->hdr_src_req = hdr->hdr_src_req;
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ack->hdr_dst_req.pval = recvreq;
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/*
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* lookup request buffer to determine if the memory is already
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* registered. if registered on both sides - do one rdma for
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* the entire message.
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*/
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if(hdr->hdr_match.hdr_msg_length > 0) {
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recvreq->req_chunk = mca_mpool_base_find(recvreq->req_recv.req_base.req_addr);
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if( NULL != recvreq->req_chunk &&
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((hdr->hdr_match.hdr_common.hdr_flags & MCA_PML_OB1_HDR_FLAGS_PIN)
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|| mca_pml_ob1.leave_pinned)) { /* BUG here! hdr_flags are 0! */
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struct mca_mpool_base_reg_mpool_t *reg = recvreq->req_chunk->mpools;
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while(reg->mpool != NULL) {
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if(NULL != mca_pml_ob1_ep_array_find(&proc->btl_rdma,(mca_btl_base_module_t*) reg->user_data)) {
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recvreq->req_mpool = reg;
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break;
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}
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reg++;
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}
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}
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/* use the longer rdma protocol for this request if:
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* - size is larger than the rdma threshold
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* - rdma devices are available
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*/
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if(NULL == recvreq->req_mpool && !mca_pml_ob1.leave_pinned) {
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if(recvreq->req_recv.req_bytes_packed > proc->proc_rdma_offset &&
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mca_pml_ob1_ep_array_get_size(&proc->btl_rdma) &&
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ompi_convertor_need_buffers(&recvreq->req_recv.req_convertor) == 0) {
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/* use convertor to figure out the rdma offset for this request */
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recvreq->req_rdma_offset = proc->proc_rdma_offset;
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if(recvreq->req_rdma_offset < hdr->hdr_frag_length) {
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recvreq->req_rdma_offset = hdr->hdr_frag_length;
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}
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ompi_convertor_set_position(
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&recvreq->req_recv.req_convertor,
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&recvreq->req_rdma_offset);
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ack->hdr_rdma_offset = recvreq->req_rdma_offset;
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} else {
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recvreq->req_rdma_offset = recvreq->req_recv.req_bytes_packed;
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ack->hdr_rdma_offset = recvreq->req_recv.req_bytes_packed;
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}
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/* start rdma at the current fragment offset */
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} else {
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recvreq->req_rdma_offset = hdr->hdr_frag_length;
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ack->hdr_rdma_offset = hdr->hdr_frag_length;
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}
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}
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/* zero byte message */
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else {
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recvreq->req_rdma_offset = 0;
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ack->hdr_rdma_offset = 0;
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}
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/* initialize descriptor */
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des->des_flags |= MCA_BTL_DES_FLAGS_PRIORITY;
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des->des_cbfunc = mca_pml_ob1_send_ctl_complete;
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des->des_cbdata = ep;
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rc = ep->btl_send(ep->btl, ep->btl_endpoint, des, MCA_BTL_TAG_PML);
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if(rc != OMPI_SUCCESS) {
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ep->btl_free(ep->btl,des);
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goto retry;
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}
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return;
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/* queue request to retry later */
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retry:
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MCA_PML_OB1_RECV_FRAG_ALLOC(frag,rc);
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frag->btl = NULL;
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frag->hdr.hdr_rndv = *hdr;
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frag->num_segments = 0;
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frag->request = recvreq;
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opal_list_append(&mca_pml_ob1.acks_pending, (opal_list_item_t*)frag);
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}
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/*
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* Update the recv request status to reflect the number of bytes
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* received and actually delivered to the application.
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*/
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void mca_pml_ob1_recv_request_progress(
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mca_pml_ob1_recv_request_t* recvreq,
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mca_btl_base_module_t* btl,
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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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size_t bytes_received = 0;
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size_t bytes_delivered = 0;
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size_t data_offset = 0;
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mca_pml_ob1_hdr_t* hdr = (mca_pml_ob1_hdr_t*)segments->seg_addr.pval;
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bool schedule = false;
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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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bytes_received = hdr->hdr_match.hdr_msg_length;
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MCA_PML_OB1_RECV_REQUEST_UNPACK(
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recvreq,
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segments,
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num_segments,
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sizeof(mca_pml_ob1_match_hdr_t),
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data_offset,
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bytes_received,
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bytes_delivered);
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break;
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case MCA_PML_OB1_HDR_TYPE_RNDV:
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#if MCA_PML_OB1_TIMESTAMPS
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recvreq->ack = get_profiler_timestamp();
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#endif
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recvreq->req_send = hdr->hdr_rndv.hdr_src_req;
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mca_pml_ob1_recv_request_ack(recvreq, &hdr->hdr_rndv);
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bytes_received = hdr->hdr_rndv.hdr_frag_length;
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MCA_PML_OB1_RECV_REQUEST_UNPACK(
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recvreq,
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segments,
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num_segments,
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sizeof(mca_pml_ob1_rendezvous_hdr_t),
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data_offset,
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bytes_received,
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bytes_delivered);
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break;
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case MCA_PML_OB1_HDR_TYPE_FRAG:
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bytes_received = hdr->hdr_frag.hdr_frag_length;
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data_offset = hdr->hdr_frag.hdr_frag_offset;
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MCA_PML_OB1_RECV_REQUEST_UNPACK(
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recvreq,
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segments,
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num_segments,
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sizeof(mca_pml_ob1_frag_hdr_t),
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data_offset,
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bytes_received,
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bytes_delivered);
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break;
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case MCA_PML_OB1_HDR_TYPE_FIN:
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bytes_delivered = bytes_received = hdr->hdr_fin.hdr_rdma_length;
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OPAL_THREAD_ADD32(&recvreq->req_pipeline_depth,-1);
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break;
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default:
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break;
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}
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/* check completion status */
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OPAL_THREAD_LOCK(&ompi_request_lock);
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recvreq->req_bytes_received += bytes_received;
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recvreq->req_bytes_delivered += bytes_delivered;
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if (recvreq->req_bytes_received >= recvreq->req_recv.req_bytes_packed) {
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/* initialize request status */
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recvreq->req_recv.req_base.req_ompi.req_status._count = recvreq->req_bytes_delivered;
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recvreq->req_recv.req_base.req_pml_complete = true;
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recvreq->req_recv.req_base.req_ompi.req_complete = true;
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#if MCA_PML_OB1_TIMESTAMPS
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if(recvreq->req_bytes_received > 0) {
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int i;
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opal_output(0, "[%d,%d,%d] dst ack: %llu",
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ORTE_NAME_ARGS(orte_process_info.my_name), recvreq->ack);
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for(i=0; i<recvreq->pin_index; i++) {
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opal_output(0, "[%d,%d,%d] dst pin, %llu %llu",
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ORTE_NAME_ARGS(orte_process_info.my_name), recvreq->pin1[i], recvreq->pin2[i] - recvreq->pin1[i]);
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}
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for(i=0; i<recvreq->fin_index; i++) {
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opal_output(0, "[%d,%d,%d] dst fin: %llu %llu",
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ORTE_NAME_ARGS(orte_process_info.my_name), recvreq->fin1[i], recvreq->fin2[i] - recvreq->fin1[i]);
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}
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}
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#endif
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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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} else if (recvreq->req_rdma_offset < recvreq->req_recv.req_bytes_packed) {
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schedule = true;
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}
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OPAL_THREAD_UNLOCK(&ompi_request_lock);
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/* schedule additional rdma operations */
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if(schedule) {
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mca_pml_ob1_recv_request_schedule(recvreq);
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}
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}
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/*
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* Schedule RDMA protocol.
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*
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*/
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void mca_pml_ob1_recv_request_schedule(mca_pml_ob1_recv_request_t* recvreq)
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{
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if(OPAL_THREAD_ADD32(&recvreq->req_lock,1) == 1) {
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mca_pml_ob1_proc_t* proc = recvreq->req_proc;
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size_t num_btl_avail = mca_pml_ob1_ep_array_get_size(&proc->btl_rdma);
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do {
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size_t bytes_remaining = recvreq->req_recv.req_bytes_packed - recvreq->req_rdma_offset;
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while(bytes_remaining > 0 && recvreq->req_pipeline_depth < mca_pml_ob1.recv_pipeline_depth) {
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mca_pml_ob1_endpoint_t* ep;
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size_t hdr_size;
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size_t size;
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mca_pml_ob1_rdma_hdr_t* hdr;
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mca_btl_base_descriptor_t* dst;
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mca_btl_base_descriptor_t* ctl;
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mca_mpool_base_registration_t * reg = NULL;
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int rc;
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/*
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* if the memory is already registed - use the NICs that its
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* registed with. Otherwise, schedule round-robin across the
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* available RDMA nics.
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*/
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if(recvreq->req_mpool == NULL && !mca_pml_ob1.leave_pinned) {
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ep = mca_pml_ob1_ep_array_get_next(&proc->btl_rdma);
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/* if there is only one btl available or the size is less than
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* than the min fragment size, schedule the rest via this btl
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*/
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if(num_btl_avail == 1 || bytes_remaining < ep->btl_min_rdma_size) {
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size = bytes_remaining;
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/* otherwise attempt to give the BTL a percentage of the message
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* based on a weighting factor. for simplicity calculate this as
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* a percentage of the overall message length (regardless of amount
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* previously assigned)
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*/
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} else {
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size = (ep->btl_weight * bytes_remaining) / 100;
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}
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/* makes sure that we don't exceed BTL max rdma size */
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if (ep->btl_max_rdma_size != 0 && size > ep->btl_max_rdma_size) {
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size = ep->btl_max_rdma_size;
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}
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/*
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* For now schedule entire message across a single NIC - need to FIX
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*/
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} else {
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size = bytes_remaining;
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if(NULL != recvreq->req_mpool){
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/* find the endpoint corresponding to this btl and schedule the entire message */
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ep = mca_pml_ob1_ep_array_find(&proc->btl_rdma,
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(mca_btl_base_module_t*) recvreq->req_mpool->user_data);
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reg = recvreq->req_mpool->mpool_registration;
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}
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else{
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ep = mca_pml_ob1_ep_array_get_next(&proc->btl_rdma);
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}
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}
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/* prepare a descriptor for RDMA */
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ompi_convertor_set_position(&recvreq->req_recv.req_convertor, &recvreq->req_rdma_offset);
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#if MCA_PML_OB1_TIMESTAMPS
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recvreq->pin1[recvreq->pin_index] = get_profiler_timestamp();
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#endif
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dst = ep->btl_prepare_dst(
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ep->btl,
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ep->btl_endpoint,
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reg,
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&recvreq->req_recv.req_convertor,
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0,
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&size);
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#if MCA_PML_OB1_TIMESTAMPS
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recvreq->pin2[recvreq->pin_index] = get_profiler_timestamp();
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recvreq->pin_index++;
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#endif
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if(dst == NULL) {
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OPAL_THREAD_LOCK(&mca_pml_ob1.lock);
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opal_list_append(&mca_pml_ob1.recv_pending, (opal_list_item_t*)recvreq);
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OPAL_THREAD_UNLOCK(&mca_pml_ob1.lock);
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break;
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}
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dst->des_cbdata = recvreq;
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/* prepare a descriptor for rdma control message */
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hdr_size = sizeof(mca_pml_ob1_rdma_hdr_t);
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if(dst->des_dst_cnt > 1) {
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hdr_size += (sizeof(mca_btl_base_segment_t) * (dst->des_dst_cnt-1));
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|
}
|
|
|
|
MCA_PML_OB1_ENDPOINT_DES_ALLOC(ep, ctl, hdr_size);
|
|
if(ctl == NULL) {
|
|
ep->btl_free(ep->btl,dst);
|
|
OPAL_THREAD_LOCK(&mca_pml_ob1.lock);
|
|
opal_list_append(&mca_pml_ob1.recv_pending, (opal_list_item_t*)recvreq);
|
|
OPAL_THREAD_UNLOCK(&mca_pml_ob1.lock);
|
|
break;
|
|
}
|
|
ctl->des_flags |= MCA_BTL_DES_FLAGS_PRIORITY;
|
|
ctl->des_cbfunc = mca_pml_ob1_send_ctl_complete;
|
|
ctl->des_cbdata = ep;
|
|
|
|
/* fill in rdma header */
|
|
hdr = (mca_pml_ob1_rdma_hdr_t*)ctl->des_src->seg_addr.pval;
|
|
hdr->hdr_common.hdr_type = MCA_PML_OB1_HDR_TYPE_PUT;
|
|
hdr->hdr_common.hdr_flags = 0;
|
|
hdr->hdr_src = recvreq->req_send;
|
|
hdr->hdr_dst.pval = dst;
|
|
hdr->hdr_rdma_offset = recvreq->req_rdma_offset;
|
|
hdr->hdr_seg_cnt = dst->des_dst_cnt;
|
|
memcpy(hdr->hdr_segs, dst->des_dst, dst->des_dst_cnt * sizeof(mca_btl_base_segment_t));
|
|
|
|
/* update request state */
|
|
recvreq->req_rdma_offset += size;
|
|
OPAL_THREAD_ADD32(&recvreq->req_pipeline_depth,1);
|
|
|
|
/* send rdma request to peer */
|
|
rc = ep->btl_send(ep->btl, ep->btl_endpoint, ctl, MCA_BTL_TAG_PML);
|
|
if(rc == OMPI_SUCCESS) {
|
|
bytes_remaining -= size;
|
|
} else {
|
|
ep->btl_free(ep->btl,ctl);
|
|
ep->btl_free(ep->btl,dst);
|
|
recvreq->req_rdma_offset -= size;
|
|
OPAL_THREAD_ADD32(&recvreq->req_pipeline_depth,-1);
|
|
OPAL_THREAD_LOCK(&mca_pml_ob1.lock);
|
|
opal_list_append(&mca_pml_ob1.recv_pending, (opal_list_item_t*)recvreq);
|
|
OPAL_THREAD_UNLOCK(&mca_pml_ob1.lock);
|
|
break;
|
|
}
|
|
|
|
/* run progress as the prepare (pinning) can take some time */
|
|
mca_pml_ob1_progress();
|
|
}
|
|
} while(OPAL_THREAD_ADD32(&recvreq->req_lock,-1) > 0);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This routine is used to match a posted receive when the source process
|
|
* is specified.
|
|
*/
|
|
|
|
void mca_pml_ob1_recv_request_match_specific(mca_pml_ob1_recv_request_t* request)
|
|
{
|
|
mca_pml_ob1_comm_t* comm = request->req_recv.req_base.req_comm->c_pml_comm;
|
|
mca_pml_ob1_comm_proc_t* proc = comm->procs + request->req_recv.req_base.req_peer;
|
|
mca_pml_ob1_recv_frag_t* frag;
|
|
|
|
/* check for a specific match */
|
|
OPAL_THREAD_LOCK(&comm->matching_lock);
|
|
|
|
/* assign sequence number */
|
|
request->req_recv.req_base.req_sequence = comm->recv_sequence++;
|
|
|
|
if (opal_list_get_size(&proc->unexpected_frags) > 0 &&
|
|
(frag = mca_pml_ob1_recv_request_match_specific_proc(request, proc)) != NULL) {
|
|
OPAL_THREAD_UNLOCK(&comm->matching_lock);
|
|
|
|
mca_pml_ob1_recv_request_progress(request,frag->btl,frag->segments,frag->num_segments);
|
|
if( !((MCA_PML_REQUEST_IPROBE == request->req_recv.req_base.req_type) ||
|
|
(MCA_PML_REQUEST_PROBE == request->req_recv.req_base.req_type)) ) {
|
|
MCA_PML_OB1_RECV_FRAG_RETURN(frag);
|
|
}
|
|
return; /* match found */
|
|
}
|
|
|
|
/* We didn't find any matches. Record this irecv so we can match
|
|
* it when the message comes in.
|
|
*/
|
|
if(request->req_recv.req_base.req_type != MCA_PML_REQUEST_IPROBE) {
|
|
opal_list_append(&proc->specific_receives, (opal_list_item_t*)request);
|
|
}
|
|
OPAL_THREAD_UNLOCK(&comm->matching_lock);
|
|
}
|
|
|
|
|
|
/*
|
|
* this routine is used to try and match a wild posted receive - where
|
|
* wild is determined by the value assigned to the source process
|
|
*/
|
|
|
|
void mca_pml_ob1_recv_request_match_wild(mca_pml_ob1_recv_request_t* request)
|
|
{
|
|
mca_pml_ob1_comm_t* comm = request->req_recv.req_base.req_comm->c_pml_comm;
|
|
mca_pml_ob1_comm_proc_t* proc = comm->procs;
|
|
size_t proc_count = comm->num_procs;
|
|
size_t i;
|
|
|
|
/*
|
|
* Loop over all the outstanding messages to find one that matches.
|
|
* There is an outer loop over lists of messages from each
|
|
* process, then an inner loop over the messages from the
|
|
* process.
|
|
*/
|
|
OPAL_THREAD_LOCK(&pml_comm->c_matching_lock);
|
|
|
|
/* assign sequence number */
|
|
request->req_recv.req_base.req_sequence = comm->recv_sequence++;
|
|
|
|
for (i = 0; i < proc_count; i++) {
|
|
mca_pml_ob1_recv_frag_t* frag;
|
|
|
|
/* continue if no frags to match */
|
|
if (opal_list_get_size(&proc->unexpected_frags) == 0) {
|
|
proc++;
|
|
continue;
|
|
}
|
|
|
|
/* loop over messages from the current proc */
|
|
if ((frag = mca_pml_ob1_recv_request_match_specific_proc(request, proc)) != NULL) {
|
|
OPAL_THREAD_UNLOCK(&comm->matching_lock);
|
|
|
|
mca_pml_ob1_recv_request_progress(request,frag->btl,frag->segments,frag->num_segments);
|
|
if( !((MCA_PML_REQUEST_IPROBE == request->req_recv.req_base.req_type) ||
|
|
(MCA_PML_REQUEST_PROBE == request->req_recv.req_base.req_type)) ) {
|
|
MCA_PML_OB1_RECV_FRAG_RETURN(frag);
|
|
}
|
|
return; /* match found */
|
|
}
|
|
proc++;
|
|
}
|
|
|
|
/* We didn't find any matches. Record this irecv so we can match to
|
|
* it when the message comes in.
|
|
*/
|
|
|
|
if(request->req_recv.req_base.req_type != MCA_PML_REQUEST_IPROBE)
|
|
opal_list_append(&comm->wild_receives, (opal_list_item_t*)request);
|
|
OPAL_THREAD_UNLOCK(&comm->matching_lock);
|
|
}
|
|
|
|
|
|
/*
|
|
* this routine tries to match a posted receive. If a match is found,
|
|
* it places the request in the appropriate matched receive list.
|
|
*/
|
|
|
|
static mca_pml_ob1_recv_frag_t* mca_pml_ob1_recv_request_match_specific_proc(
|
|
mca_pml_ob1_recv_request_t* request,
|
|
mca_pml_ob1_comm_proc_t* proc)
|
|
{
|
|
opal_list_t* unexpected_frags = &proc->unexpected_frags;
|
|
mca_pml_ob1_recv_frag_t* frag;
|
|
mca_pml_ob1_match_hdr_t* hdr;
|
|
int tag = request->req_recv.req_base.req_tag;
|
|
|
|
if( OMPI_ANY_TAG == tag ) {
|
|
for (frag = (mca_pml_ob1_recv_frag_t*)opal_list_get_first(unexpected_frags);
|
|
frag != (mca_pml_ob1_recv_frag_t*)opal_list_get_end(unexpected_frags);
|
|
frag = (mca_pml_ob1_recv_frag_t*)opal_list_get_next(frag)) {
|
|
hdr = &(frag->hdr.hdr_match);
|
|
|
|
/* check first frag - we assume that process matching has been done already */
|
|
if( hdr->hdr_tag >= 0 ) {
|
|
goto find_fragment;
|
|
}
|
|
}
|
|
} else {
|
|
for (frag = (mca_pml_ob1_recv_frag_t*)opal_list_get_first(unexpected_frags);
|
|
frag != (mca_pml_ob1_recv_frag_t*)opal_list_get_end(unexpected_frags);
|
|
frag = (mca_pml_ob1_recv_frag_t*)opal_list_get_next(frag)) {
|
|
hdr = &(frag->hdr.hdr_match);
|
|
|
|
/* check first frag - we assume that process matching has been done already */
|
|
if ( tag == hdr->hdr_tag ) {
|
|
/* we assume that the tag is correct from MPI point of view (ie. >= 0 ) */
|
|
goto find_fragment;
|
|
}
|
|
}
|
|
}
|
|
return NULL;
|
|
find_fragment:
|
|
MCA_PML_OB1_RECV_REQUEST_MATCHED(request, hdr);
|
|
if( !((MCA_PML_REQUEST_IPROBE == request->req_recv.req_base.req_type) ||
|
|
(MCA_PML_REQUEST_PROBE == request->req_recv.req_base.req_type)) ) {
|
|
opal_list_remove_item(unexpected_frags, (opal_list_item_t*)frag);
|
|
frag->request = request;
|
|
}
|
|
return frag;
|
|
}
|
|
|