970 строки
37 KiB
C
970 строки
37 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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#include "ompi_config.h"
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#include "ompi/mca/pml/pml.h"
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#include "ompi/mca/bml/bml.h"
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#include "ompi/mca/btl/btl.h"
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#include "ompi/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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#include "pml_ob1_rdmafrag.h"
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#include "ompi/mca/bml/base/base.h"
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#include "orte/mca/errmgr/errmgr.h"
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#include "ompi/datatype/dt_arch.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_free(struct ompi_request_t** request)
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{
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mca_pml_ob1_recv_request_t* recvreq = *(mca_pml_ob1_recv_request_t**)request;
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assert( false == recvreq->req_recv.req_base.req_free_called );
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OPAL_THREAD_LOCK(&ompi_request_lock);
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recvreq->req_recv.req_base.req_free_called = true;
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if( true == recvreq->req_recv.req_base.req_pml_complete ) {
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MCA_PML_OB1_RECV_REQUEST_RETURN( recvreq );
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}
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PERUSE_TRACE_COMM_EVENT( PERUSE_COMM_REQ_NOTIFY,
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&(recvreq->req_recv.req_base), PERUSE_RECV );
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OPAL_THREAD_UNLOCK(&ompi_request_lock);
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*request = MPI_REQUEST_NULL;
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return OMPI_SUCCESS;
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}
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static int mca_pml_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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PERUSE_TRACE_COMM_EVENT( PERUSE_COMM_REQ_REMOVE_FROM_POSTED_Q,
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&(request->req_recv.req_base), PERUSE_RECV );
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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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/* This macro will set the req_complete to true so the MPI Test/Wait* functions
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* on this request will be able to complete. As the status is marked as
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* cancelled the cancel state will be detected.
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*/
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MCA_PML_OB1_RECV_REQUEST_MPI_COMPLETE(request);
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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_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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request->req_rdma_cnt = 0;
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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_recv_ctl_completion(
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mca_btl_base_module_t* btl,
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struct mca_btl_base_endpoint_t* ep,
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struct mca_btl_base_descriptor_t* des,
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int status)
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{
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mca_bml_base_btl_t* bml_btl = (mca_bml_base_btl_t*)des->des_context;
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MCA_BML_BASE_BTL_DES_RETURN(bml_btl, des);
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}
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/*
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* Put operation has completed remotely - update request status
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*/
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static void mca_pml_ob1_put_completion(
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mca_btl_base_module_t* btl,
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struct mca_btl_base_endpoint_t* ep,
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struct mca_btl_base_descriptor_t* des,
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int status)
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{
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mca_bml_base_btl_t* bml_btl = (mca_bml_base_btl_t*)des->des_context;
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mca_pml_ob1_recv_request_t* recvreq = (mca_pml_ob1_recv_request_t*)des->des_cbdata;
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size_t bytes_received = 0;
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MCA_PML_OB1_COMPUTE_SEGMENT_LENGTH( des->des_dst, des->des_dst_cnt,
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0, bytes_received );
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OPAL_THREAD_ADD_SIZE_T(&recvreq->req_pipeline_depth,-1);
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mca_bml_base_free(bml_btl, des);
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/* check completion status */
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if( OPAL_THREAD_ADD_SIZE_T(&recvreq->req_bytes_received, bytes_received)
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>= recvreq->req_recv.req_bytes_packed ) {
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MCA_PML_OB1_RECV_REQUEST_PML_COMPLETE( recvreq );
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} else if (recvreq->req_rdma_offset < recvreq->req_recv.req_bytes_packed) {
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/* schedule additional rdma operations */
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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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*
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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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size_t bytes_received)
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{
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ompi_proc_t* proc = (ompi_proc_t*)recvreq->req_recv.req_base.req_proc;
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mca_bml_base_endpoint_t* bml_endpoint = NULL;
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mca_btl_base_descriptor_t* des;
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mca_bml_base_btl_t* bml_btl;
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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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bml_endpoint = (mca_bml_base_endpoint_t*) proc->proc_pml;
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bml_btl = mca_bml_base_btl_array_get_next(&bml_endpoint->btl_eager);
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if(hdr->hdr_msg_length > bytes_received) {
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/* by default copy */
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recvreq->req_rdma_offset = hdr->hdr_msg_length;
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/*
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* lookup request buffer to determine if memory is already
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* registered.
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*/
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if(ompi_convertor_need_buffers(&recvreq->req_recv.req_convertor) == 0 &&
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hdr->hdr_match.hdr_common.hdr_flags & MCA_PML_OB1_HDR_FLAGS_CONTIG) {
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recvreq->req_rdma_cnt = mca_pml_ob1_rdma_btls(
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bml_endpoint,
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recvreq->req_recv.req_base.req_addr,
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recvreq->req_recv.req_bytes_packed,
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recvreq->req_rdma);
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/* memory is already registered on both sides */
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if (hdr->hdr_match.hdr_common.hdr_flags & MCA_PML_OB1_HDR_FLAGS_PIN &&
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recvreq->req_rdma_cnt != 0) {
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/* start rdma at current fragment offset - no need to ack */
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recvreq->req_rdma_offset = recvreq->req_bytes_received;
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return;
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/* are rdma devices available for long rdma protocol */
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} else if (mca_pml_ob1.leave_pinned_pipeline &&
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hdr->hdr_msg_length > bml_endpoint->btl_rdma_size &&
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mca_bml_base_btl_array_get_size(&bml_endpoint->btl_rdma)) {
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char* base;
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char* align;
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long lb;
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/* round this up/down to the next aligned address */
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ompi_ddt_type_lb(recvreq->req_recv.req_convertor.pDesc, &lb);
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base = recvreq->req_recv.req_convertor.pBaseBuf + lb;
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align = (char*)up_align_addr(base, bml_endpoint->btl_rdma_align)+1;
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recvreq->req_rdma_offset = align - base;
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/* still w/in range */
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if(recvreq->req_rdma_offset < bytes_received) {
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recvreq->req_rdma_offset = bytes_received;
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}
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if(recvreq->req_rdma_offset > hdr->hdr_msg_length) {
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recvreq->req_rdma_offset = hdr->hdr_msg_length;
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} else {
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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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}
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/* are rdma devices available for long rdma protocol */
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} else if (!mca_pml_ob1.leave_pinned_pipeline &&
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bml_endpoint->btl_rdma_offset < hdr->hdr_msg_length &&
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mca_bml_base_btl_array_get_size(&bml_endpoint->btl_rdma)) {
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/* use convertor to figure out the rdma offset for this request */
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recvreq->req_rdma_offset = bml_endpoint->btl_rdma_offset;
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if(recvreq->req_rdma_offset < recvreq->req_bytes_received) {
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recvreq->req_rdma_offset = recvreq->req_bytes_received;
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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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}
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}
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}
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/* allocate descriptor */
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MCA_PML_OB1_DES_ALLOC(bml_btl, 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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ack->hdr_rdma_offset = recvreq->req_rdma_offset;
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#if OMPI_ENABLE_HETEROGENEOUS_SUPPORT
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#ifdef WORDS_BIGENDIAN
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ack->hdr_common.hdr_flags |= MCA_PML_OB1_HDR_FLAGS_NBO;
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#else
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/* if we are little endian and the remote side is big endian,
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we're responsible for making sure the data is in network byte
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order */
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if (recvreq->req_recv.req_base.req_proc->proc_arch & OMPI_ARCH_ISBIGENDIAN) {
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ack->hdr_common.hdr_flags |= MCA_PML_OB1_HDR_FLAGS_NBO;
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MCA_PML_OB1_ACK_HDR_HTON(*ack);
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}
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#endif
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#endif
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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_recv_ctl_completion;
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rc = mca_bml_base_send(bml_btl, des, MCA_BTL_TAG_PML);
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if(rc != OMPI_SUCCESS) {
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mca_bml_base_free(bml_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->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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* Return resources used by the RDMA
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*/
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static void mca_pml_ob1_fin_completion(
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mca_btl_base_module_t* btl,
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struct mca_btl_base_endpoint_t* ep,
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struct mca_btl_base_descriptor_t* des,
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int status)
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{
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mca_pml_ob1_rdma_frag_t* frag = (mca_pml_ob1_rdma_frag_t*)des->des_cbdata;
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mca_bml_base_btl_t* bml_btl = (mca_bml_base_btl_t*) des->des_context;
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MCA_PML_OB1_RDMA_FRAG_RETURN(frag);
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MCA_BML_BASE_BTL_DES_RETURN(bml_btl, 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_rget_completion(
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mca_btl_base_module_t* btl,
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struct mca_btl_base_endpoint_t* ep,
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struct mca_btl_base_descriptor_t* des,
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int status)
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{
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mca_bml_base_btl_t* bml_btl = (mca_bml_base_btl_t*)des->des_context;
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mca_pml_ob1_rdma_frag_t* frag = (mca_pml_ob1_rdma_frag_t*)des->des_cbdata;
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mca_pml_ob1_recv_request_t* recvreq = frag->rdma_req;
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mca_pml_ob1_fin_hdr_t* hdr;
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mca_btl_base_descriptor_t *fin;
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int rc;
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/* return descriptor */
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mca_bml_base_free(bml_btl, des);
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/* queue up a fin control message to source */
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MCA_PML_OB1_DES_ALLOC(bml_btl, fin, sizeof(mca_pml_ob1_fin_hdr_t));
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if(NULL == fin) {
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opal_output(0, "[%s:%d] unable to allocate descriptor", __FILE__,__LINE__);
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orte_errmgr.abort();
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}
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fin->des_flags |= MCA_BTL_DES_FLAGS_PRIORITY;
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fin->des_cbfunc = mca_pml_ob1_fin_completion;
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fin->des_cbdata = frag;
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/* fill in header */
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hdr = (mca_pml_ob1_fin_hdr_t*)fin->des_src->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_FIN;
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hdr->hdr_des = frag->rdma_hdr.hdr_rget.hdr_des;
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#if OMPI_ENABLE_HETEROGENEOUS_SUPPORT
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#ifdef WORDS_BIGENDIAN
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hdr->hdr_common.hdr_flags |= MCA_PML_OB1_HDR_FLAGS_NBO;
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#else
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/* if we are little endian and the remote side is big endian,
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we're responsible for making sure the data is in network byte
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order */
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if (recvreq->req_recv.req_base.req_proc->proc_arch & OMPI_ARCH_ISBIGENDIAN) {
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hdr->hdr_common.hdr_flags |= MCA_PML_OB1_HDR_FLAGS_NBO;
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MCA_PML_OB1_FIN_HDR_HTON(*hdr);
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}
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#endif
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#endif
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/* is receive request complete */
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if( OPAL_THREAD_ADD_SIZE_T(&recvreq->req_bytes_received, frag->rdma_length)
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== recvreq->req_recv.req_bytes_packed ) {
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MCA_PML_OB1_RECV_REQUEST_PML_COMPLETE( recvreq );
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}
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/* queue request */
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rc = mca_bml_base_send( bml_btl,
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fin,
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MCA_BTL_TAG_PML
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);
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if(OMPI_SUCCESS != rc) {
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opal_output(0, "[%s:%d] unable to queue fin", __FILE__,__LINE__);
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orte_errmgr.abort();
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}
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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_rget(
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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_pml_ob1_rget_hdr_t* hdr)
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{
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mca_bml_base_endpoint_t* bml_endpoint = NULL;
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mca_bml_base_btl_t* bml_btl;
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mca_pml_ob1_rdma_frag_t* frag;
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mca_btl_base_descriptor_t* descriptor;
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mca_mpool_base_registration_t* reg;
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size_t i, size = 0;
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int rc;
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/* lookup bml datastructures */
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bml_endpoint = (mca_bml_base_endpoint_t*)recvreq->req_recv.req_base.req_proc->proc_pml;
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bml_btl = mca_bml_base_btl_array_find(&bml_endpoint->btl_eager, btl);
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if(NULL == bml_btl) {
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opal_output(0, "[%s:%d] invalid bml for rdma get", __FILE__, __LINE__);
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orte_errmgr.abort();
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}
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/* allocate/initialize a fragment */
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MCA_PML_OB1_RDMA_FRAG_ALLOC(frag,rc);
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for(i=0; i<hdr->hdr_seg_cnt; i++) {
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size += hdr->hdr_segs[i].seg_len;
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frag->rdma_segs[i] = hdr->hdr_segs[i];
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}
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frag->rdma_hdr.hdr_rget = *hdr;
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frag->rdma_req = recvreq;
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frag->rdma_ep = bml_endpoint;
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frag->rdma_state = MCA_PML_OB1_RDMA_PREPARE;
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/* is there an existing registration for this btl */
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reg = mca_pml_ob1_rdma_registration(
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bml_btl,
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recvreq->req_recv.req_base.req_addr,
|
|
recvreq->req_recv.req_bytes_packed);
|
|
if(NULL != reg) {
|
|
recvreq->req_rdma[0].bml_btl = bml_btl;
|
|
recvreq->req_rdma[0].btl_reg = reg;
|
|
recvreq->req_rdma_cnt = 1;
|
|
}
|
|
|
|
/* prepare descriptor */
|
|
mca_bml_base_prepare_dst(
|
|
bml_btl,
|
|
reg,
|
|
&recvreq->req_recv.req_convertor,
|
|
0,
|
|
&size,
|
|
&descriptor);
|
|
if(NULL == descriptor) {
|
|
opal_output(0, "[%s:%d] unable to allocate descriptor for rdma get", __FILE__, __LINE__);
|
|
orte_errmgr.abort();
|
|
}
|
|
|
|
frag->rdma_length = size;
|
|
descriptor->des_src = frag->rdma_segs;
|
|
descriptor->des_src_cnt = hdr->hdr_seg_cnt;
|
|
descriptor->des_cbdata = frag;
|
|
descriptor->des_cbfunc = mca_pml_ob1_rget_completion;
|
|
|
|
/* queue up get request */
|
|
rc = mca_bml_base_get(bml_btl,descriptor);
|
|
if(rc != OMPI_SUCCESS) {
|
|
opal_output(0, "[%s:%d] rdma get failed with error %d", __FILE__, __LINE__, rc);
|
|
orte_errmgr.abort();
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Update the recv request status to reflect the number of bytes
|
|
* received and actually delivered to the application.
|
|
*/
|
|
|
|
void mca_pml_ob1_recv_request_progress(
|
|
mca_pml_ob1_recv_request_t* recvreq,
|
|
mca_btl_base_module_t* btl,
|
|
mca_btl_base_segment_t* segments,
|
|
size_t num_segments)
|
|
{
|
|
size_t bytes_received = 0;
|
|
size_t bytes_delivered = 0;
|
|
size_t data_offset = 0;
|
|
mca_pml_ob1_hdr_t* hdr = (mca_pml_ob1_hdr_t*)segments->seg_addr.pval;
|
|
|
|
MCA_PML_OB1_COMPUTE_SEGMENT_LENGTH( segments, num_segments,
|
|
0, bytes_received );
|
|
switch(hdr->hdr_common.hdr_type) {
|
|
case MCA_PML_OB1_HDR_TYPE_MATCH:
|
|
|
|
bytes_received -= sizeof(mca_pml_ob1_match_hdr_t);
|
|
recvreq->req_recv.req_bytes_packed = bytes_received;
|
|
MCA_PML_OB1_RECV_REQUEST_MATCHED(recvreq,&hdr->hdr_match);
|
|
MCA_PML_OB1_RECV_REQUEST_UNPACK(
|
|
recvreq,
|
|
segments,
|
|
num_segments,
|
|
sizeof(mca_pml_ob1_match_hdr_t),
|
|
data_offset,
|
|
bytes_received,
|
|
bytes_delivered);
|
|
break;
|
|
|
|
case MCA_PML_OB1_HDR_TYPE_RNDV:
|
|
|
|
bytes_received -= sizeof(mca_pml_ob1_rendezvous_hdr_t);
|
|
recvreq->req_recv.req_bytes_packed = hdr->hdr_rndv.hdr_msg_length;
|
|
recvreq->req_send = hdr->hdr_rndv.hdr_src_req;
|
|
MCA_PML_OB1_RECV_REQUEST_MATCHED(recvreq,&hdr->hdr_match);
|
|
mca_pml_ob1_recv_request_ack(recvreq, &hdr->hdr_rndv, bytes_received);
|
|
/**
|
|
* The PUT protocol do not attach any data to the original request.
|
|
* Therefore, we might want to avoid unpacking if there is nothing to
|
|
* unpack.
|
|
*/
|
|
if( 0 < bytes_received ) {
|
|
MCA_PML_OB1_RECV_REQUEST_UNPACK(
|
|
recvreq,
|
|
segments,
|
|
num_segments,
|
|
sizeof(mca_pml_ob1_rendezvous_hdr_t),
|
|
data_offset,
|
|
bytes_received,
|
|
bytes_delivered);
|
|
}
|
|
break;
|
|
|
|
case MCA_PML_OB1_HDR_TYPE_RGET:
|
|
|
|
recvreq->req_recv.req_bytes_packed = hdr->hdr_rndv.hdr_msg_length;
|
|
MCA_PML_OB1_RECV_REQUEST_MATCHED(recvreq,&hdr->hdr_match);
|
|
mca_pml_ob1_recv_request_rget(recvreq, btl, &hdr->hdr_rget);
|
|
return;
|
|
|
|
case MCA_PML_OB1_HDR_TYPE_FRAG:
|
|
|
|
bytes_received -= sizeof(mca_pml_ob1_frag_hdr_t);
|
|
data_offset = hdr->hdr_frag.hdr_frag_offset;
|
|
MCA_PML_OB1_RECV_REQUEST_UNPACK(
|
|
recvreq,
|
|
segments,
|
|
num_segments,
|
|
sizeof(mca_pml_ob1_frag_hdr_t),
|
|
data_offset,
|
|
bytes_received,
|
|
bytes_delivered);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* check completion status */
|
|
if( OPAL_THREAD_ADD_SIZE_T(&recvreq->req_bytes_received, bytes_received)
|
|
>= recvreq->req_recv.req_bytes_packed ) {
|
|
MCA_PML_OB1_RECV_REQUEST_PML_COMPLETE( recvreq );
|
|
} else if (recvreq->req_rdma_offset < recvreq->req_recv.req_bytes_packed) {
|
|
/* schedule additional rdma operations */
|
|
mca_pml_ob1_recv_request_schedule(recvreq);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Handle completion of a probe request
|
|
*/
|
|
|
|
void mca_pml_ob1_recv_request_matched_probe(
|
|
mca_pml_ob1_recv_request_t* recvreq,
|
|
mca_btl_base_module_t* btl,
|
|
mca_btl_base_segment_t* segments,
|
|
size_t num_segments)
|
|
{
|
|
size_t bytes_packed = 0;
|
|
mca_pml_ob1_hdr_t* hdr = (mca_pml_ob1_hdr_t*)segments->seg_addr.pval;
|
|
|
|
switch(hdr->hdr_common.hdr_type) {
|
|
case MCA_PML_OB1_HDR_TYPE_MATCH:
|
|
|
|
MCA_PML_OB1_COMPUTE_SEGMENT_LENGTH( segments, num_segments,
|
|
sizeof(mca_pml_ob1_match_hdr_t),
|
|
bytes_packed );
|
|
break;
|
|
|
|
case MCA_PML_OB1_HDR_TYPE_RNDV:
|
|
case MCA_PML_OB1_HDR_TYPE_RGET:
|
|
|
|
bytes_packed = hdr->hdr_rndv.hdr_msg_length;
|
|
break;
|
|
}
|
|
|
|
/* set completion status */
|
|
recvreq->req_recv.req_base.req_ompi.req_status.MPI_TAG = hdr->hdr_match.hdr_tag;
|
|
recvreq->req_recv.req_base.req_ompi.req_status.MPI_SOURCE = hdr->hdr_match.hdr_src;
|
|
recvreq->req_bytes_received = bytes_packed;
|
|
recvreq->req_bytes_delivered = bytes_packed;
|
|
MCA_PML_OB1_RECV_REQUEST_PML_COMPLETE( recvreq );
|
|
}
|
|
|
|
|
|
/*
|
|
* Schedule RDMA protocol.
|
|
*
|
|
*/
|
|
|
|
void mca_pml_ob1_recv_request_schedule(mca_pml_ob1_recv_request_t* recvreq)
|
|
{
|
|
if(OPAL_THREAD_ADD32(&recvreq->req_lock,1) == 1) {
|
|
ompi_proc_t* proc = recvreq->req_recv.req_base.req_proc;
|
|
mca_bml_base_endpoint_t* bml_endpoint = (mca_bml_base_endpoint_t*) proc->proc_pml;
|
|
mca_bml_base_btl_t* bml_btl;
|
|
bool ack = false;
|
|
do {
|
|
size_t bytes_remaining = recvreq->req_recv.req_bytes_packed - recvreq->req_rdma_offset;
|
|
while(bytes_remaining > 0 && recvreq->req_pipeline_depth < mca_pml_ob1.recv_pipeline_depth) {
|
|
size_t hdr_size;
|
|
size_t size;
|
|
mca_pml_ob1_rdma_hdr_t* hdr;
|
|
mca_btl_base_descriptor_t* dst;
|
|
mca_btl_base_descriptor_t* ctl;
|
|
mca_mpool_base_registration_t * reg = NULL;
|
|
size_t num_btl_avail;
|
|
int rc;
|
|
bool release = false;
|
|
|
|
ompi_convertor_set_position(&recvreq->req_recv.req_convertor, &recvreq->req_rdma_offset);
|
|
if(recvreq->req_rdma_cnt) {
|
|
|
|
/*
|
|
* Select the next btl out of the list w/ preregistered
|
|
* memory.
|
|
*/
|
|
bml_btl = recvreq->req_rdma[recvreq->req_rdma_idx].bml_btl;
|
|
num_btl_avail = recvreq->req_rdma_cnt - recvreq->req_rdma_idx;
|
|
reg = recvreq->req_rdma[recvreq->req_rdma_idx].btl_reg;
|
|
if(++recvreq->req_rdma_idx >= recvreq->req_rdma_cnt)
|
|
recvreq->req_rdma_idx = 0;
|
|
|
|
/*
|
|
* If more than one NIC is available - try to use both for anything
|
|
* larger than the eager limit
|
|
*/
|
|
if(num_btl_avail == 1 || bytes_remaining < bml_btl->btl_max_rdma_size) {
|
|
size = bytes_remaining;
|
|
|
|
/* otherwise attempt to give the BTL a percentage of the message
|
|
* based on a weighting factor. for simplicity calculate this as
|
|
* a percentage of the overall message length (regardless of amount
|
|
* previously assigned)
|
|
*/
|
|
} else {
|
|
size = (size_t)(bml_btl->btl_weight * bytes_remaining);
|
|
}
|
|
/* This is the first time we're trying to complete
|
|
an RDMA pipeline message. If this is the first
|
|
put request (ei, we're the only BTL or the
|
|
first in the array), set ack to true and ack
|
|
the message. */
|
|
if(num_btl_avail == 1 || recvreq->req_rdma_idx == 1) {
|
|
ack = true;
|
|
} else {
|
|
ack = false;
|
|
}
|
|
|
|
} else {
|
|
char* base;
|
|
long lb;
|
|
|
|
/*
|
|
* Otherwise, schedule round-robin across the
|
|
* available RDMA nics dynamically registering/deregister
|
|
* as required.
|
|
*/
|
|
num_btl_avail = mca_bml_base_btl_array_get_size(&bml_endpoint->btl_rdma);
|
|
bml_btl = mca_bml_base_btl_array_get_next(&bml_endpoint->btl_rdma);
|
|
|
|
/*
|
|
* If more than one NIC is available - try to use both for anything
|
|
* larger than the eager limit
|
|
*/
|
|
if(num_btl_avail == 1 || bytes_remaining < bml_btl->btl_max_rdma_size) {
|
|
size = bytes_remaining;
|
|
|
|
/* otherwise attempt to give the BTL a percentage of the message
|
|
* based on a weighting factor. for simplicity calculate this as
|
|
* a percentage of the overall message length (regardless of amount
|
|
* previously assigned)
|
|
*/
|
|
} else {
|
|
size = (size_t)(bml_btl->btl_weight * bytes_remaining);
|
|
}
|
|
|
|
/* makes sure that we don't exceed BTL max rdma size */
|
|
if( size > bml_btl->btl_max_rdma_size ) {
|
|
size = bml_btl->btl_max_rdma_size;
|
|
}
|
|
if(mca_pml_ob1.leave_pinned_pipeline) {
|
|
/* lookup and/or create a cached registration */
|
|
ompi_ddt_type_lb(recvreq->req_recv.req_convertor.pDesc, &lb);
|
|
base = recvreq->req_recv.req_convertor.pBaseBuf + lb + recvreq->req_rdma_offset;
|
|
reg = mca_pml_ob1_rdma_register(bml_btl, (unsigned char*)base, size);
|
|
release = true;
|
|
}
|
|
}
|
|
|
|
/* prepare a descriptor for RDMA */
|
|
mca_bml_base_prepare_dst(
|
|
bml_btl,
|
|
reg,
|
|
&recvreq->req_recv.req_convertor,
|
|
0,
|
|
&size,
|
|
&dst);
|
|
if(dst == NULL) {
|
|
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;
|
|
}
|
|
if(release == true && NULL != bml_btl->btl_mpool) {
|
|
bml_btl->btl_mpool->mpool_release(bml_btl->btl_mpool, reg);
|
|
}
|
|
dst->des_cbfunc = mca_pml_ob1_put_completion;
|
|
dst->des_cbdata = recvreq;
|
|
|
|
/* prepare a descriptor for rdma control message */
|
|
hdr_size = sizeof(mca_pml_ob1_rdma_hdr_t);
|
|
if(dst->des_dst_cnt > 1) {
|
|
hdr_size += (sizeof(mca_btl_base_segment_t) * (dst->des_dst_cnt-1));
|
|
}
|
|
|
|
MCA_PML_OB1_DES_ALLOC(bml_btl, ctl, hdr_size);
|
|
if(ctl == NULL) {
|
|
mca_bml_base_free(bml_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_recv_ctl_completion;
|
|
|
|
/* 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 = ack ? MCA_PML_OB1_HDR_TYPE_ACK : 0;
|
|
hdr->hdr_req = recvreq->req_send;
|
|
hdr->hdr_des.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));
|
|
|
|
#if OMPI_ENABLE_HETEROGENEOUS_SUPPORT
|
|
#ifdef WORDS_BIGENDIAN
|
|
hdr->hdr_common.hdr_flags |= MCA_PML_OB1_HDR_FLAGS_NBO;
|
|
#else
|
|
/* if we are little endian and the remote side is big endian,
|
|
we're responsible for making sure the data is in network byte
|
|
order */
|
|
/* RDMA is currently disabled by bml if arch doesn't
|
|
match, so this shouldn't be needed. here to make sure
|
|
we remember if we ever change the bml. */
|
|
assert(0 == (recvreq->req_recv.req_base.req_proc->proc_arch &
|
|
OMPI_ARCH_ISBIGENDIAN));
|
|
#endif
|
|
#endif
|
|
|
|
/* update request state */
|
|
recvreq->req_rdma_offset += size;
|
|
OPAL_THREAD_ADD_SIZE_T(&recvreq->req_pipeline_depth,1);
|
|
|
|
/* send rdma request to peer */
|
|
rc = mca_bml_base_send(bml_btl, ctl, MCA_BTL_TAG_PML);
|
|
if(rc == OMPI_SUCCESS) {
|
|
bytes_remaining -= size;
|
|
} else {
|
|
mca_bml_base_free(bml_btl,ctl);
|
|
mca_bml_base_free(bml_btl,dst);
|
|
recvreq->req_rdma_offset -= size;
|
|
OPAL_THREAD_ADD_SIZE_T(&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);
|
|
/**
|
|
* The laps of time between the ACTIVATE event and the SEARCH_UNEX one include
|
|
* the cost of the request lock.
|
|
*/
|
|
PERUSE_TRACE_COMM_EVENT( PERUSE_COMM_SEARCH_UNEX_Q_BEGIN,
|
|
&(request->req_recv.req_base), PERUSE_RECV );
|
|
|
|
/* 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);
|
|
|
|
PERUSE_TRACE_COMM_EVENT( PERUSE_COMM_SEARCH_UNEX_Q_END,
|
|
&(request->req_recv.req_base), PERUSE_RECV );
|
|
|
|
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_request_progress(request,frag->btl,frag->segments,frag->num_segments);
|
|
MCA_PML_OB1_RECV_FRAG_RETURN(frag);
|
|
} else {
|
|
mca_pml_ob1_recv_request_matched_probe(request,frag->btl,frag->segments,frag->num_segments);
|
|
}
|
|
return; /* match found */
|
|
}
|
|
|
|
PERUSE_TRACE_COMM_EVENT( PERUSE_COMM_SEARCH_UNEX_Q_END,
|
|
&(request->req_recv.req_base), PERUSE_RECV );
|
|
|
|
/* 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);
|
|
if(request->req_recv.req_base.req_type != MCA_PML_REQUEST_PROBE) {
|
|
PERUSE_TRACE_COMM_EVENT( PERUSE_COMM_REQ_INSERT_IN_POSTED_Q,
|
|
&(request->req_recv.req_base), PERUSE_RECV );
|
|
}
|
|
}
|
|
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(&comm->matching_lock);
|
|
/**
|
|
* The laps of time between the ACTIVATE event and the SEARCH_UNEX one include
|
|
* the cost of the request lock.
|
|
*/
|
|
PERUSE_TRACE_COMM_EVENT( PERUSE_COMM_SEARCH_UNEX_Q_BEGIN,
|
|
&(request->req_recv.req_base), PERUSE_RECV );
|
|
|
|
/* 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);
|
|
|
|
PERUSE_TRACE_COMM_EVENT( PERUSE_COMM_SEARCH_UNEX_Q_END,
|
|
&(request->req_recv.req_base), PERUSE_RECV );
|
|
|
|
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_request_progress(request,frag->btl,frag->segments,frag->num_segments);
|
|
MCA_PML_OB1_RECV_FRAG_RETURN(frag);
|
|
} else {
|
|
mca_pml_ob1_recv_request_matched_probe(request,frag->btl,frag->segments,frag->num_segments);
|
|
}
|
|
return; /* match found */
|
|
}
|
|
proc++;
|
|
}
|
|
|
|
PERUSE_TRACE_COMM_EVENT( PERUSE_COMM_SEARCH_UNEX_Q_END,
|
|
&(request->req_recv.req_base), PERUSE_RECV );
|
|
|
|
/* 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);
|
|
/**
|
|
* We don't want to generate this kind of event for MPI_Probe. Hopefully,
|
|
* the compiler will optimize out the empty if loop in the case where PERUSE
|
|
* support is not required by the user.
|
|
*/
|
|
if(request->req_recv.req_base.req_type != MCA_PML_REQUEST_PROBE) {
|
|
PERUSE_TRACE_COMM_EVENT( PERUSE_COMM_REQ_INSERT_IN_POSTED_Q,
|
|
&(request->req_recv.req_base), PERUSE_RECV );
|
|
}
|
|
}
|
|
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. This
|
|
* function has to be called with the communicator matching lock held.
|
|
*/
|
|
|
|
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:
|
|
request->req_recv.req_base.req_proc = proc->proc_ompi;
|
|
if( !((MCA_PML_REQUEST_IPROBE == request->req_recv.req_base.req_type) ||
|
|
(MCA_PML_REQUEST_PROBE == request->req_recv.req_base.req_type)) ) {
|
|
PERUSE_TRACE_MSG_EVENT( PERUSE_COMM_MSG_REMOVE_FROM_UNEX_Q,
|
|
request->req_recv.req_base.req_comm,
|
|
hdr->hdr_src, hdr->hdr_tag, PERUSE_RECV );
|
|
opal_list_remove_item(unexpected_frags, (opal_list_item_t*)frag);
|
|
frag->request = request;
|
|
}
|
|
PERUSE_TRACE_COMM_EVENT( PERUSE_COMM_REQ_MATCH_UNEX,
|
|
&(request->req_recv.req_base), PERUSE_RECV );
|
|
return frag;
|
|
}
|
|
|