/* * Copyright (c) 2004-2005 The Trustees of Indiana University. * All rights reserved. * Copyright (c) 2004-2005 The Trustees of the University of Tennessee. * All rights reserved. * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart, * University of Stuttgart. All rights reserved. * Copyright (c) 2004-2005 The Regents of the University of California. * All rights reserved. * $COPYRIGHT$ * * Additional copyrights may follow * * $HEADER$ */ /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/ #include "ompi_config.h" #include "include/constants.h" #include "mca/pml/pml.h" #include "mca/bmi/bmi.h" #include "mca/errmgr/errmgr.h" #include "pml_ob1.h" #include "pml_ob1_hdr.h" #include "pml_ob1_proc.h" #include "pml_ob1_sendreq.h" #include "pml_ob1_rdmafrag.h" #include "pml_ob1_recvreq.h" #include "pml_ob1_endpoint.h" static int mca_pml_ob1_send_request_fini(struct ompi_request_t** request) { MCA_PML_OB1_FINI(request); return OMPI_SUCCESS; } static int mca_pml_ob1_send_request_free(struct ompi_request_t** request) { MCA_PML_OB1_FREE(request); return OMPI_SUCCESS; } static int mca_pml_ob1_send_request_cancel(struct ompi_request_t* request, int complete) { /* we dont cancel send requests by now */ return OMPI_SUCCESS; } static void mca_pml_ob1_send_request_construct(mca_pml_ob1_send_request_t* req) { req->req_send.req_base.req_type = MCA_PML_REQUEST_SEND; req->req_send.req_base.req_ompi.req_fini = mca_pml_ob1_send_request_fini; req->req_send.req_base.req_ompi.req_free = mca_pml_ob1_send_request_free; req->req_send.req_base.req_ompi.req_cancel = mca_pml_ob1_send_request_cancel; } static void mca_pml_ob1_send_request_destruct(mca_pml_ob1_send_request_t* req) { } OBJ_CLASS_INSTANCE( mca_pml_ob1_send_request_t, mca_pml_base_send_request_t, mca_pml_ob1_send_request_construct, mca_pml_ob1_send_request_destruct); /** * Completion of a short message - nothing left to schedule. */ static void mca_pml_ob1_short_completion( mca_bmi_base_module_t* bmi, struct mca_bmi_base_endpoint_t* ep, struct mca_bmi_base_descriptor_t* descriptor, int status) { mca_pml_ob1_send_request_t* sendreq = (mca_pml_ob1_send_request_t*)descriptor->des_cbdata; mca_pml_ob1_endpoint_t* bmi_ep = sendreq->req_endpoint; /* check completion status */ if(OMPI_SUCCESS != status) { /* TSW - FIX */ ompi_output(0, "%s:%d FATAL", __FILE__, __LINE__); orte_errmgr.abort(); } /* attempt to cache the descriptor */ MCA_PML_OB1_ENDPOINT_DES_RETURN(bmi_ep,descriptor); /* signal request completion */ OMPI_THREAD_LOCK(&ompi_request_lock); sendreq->req_bytes_delivered = sendreq->req_send.req_bytes_packed; MCA_PML_OB1_SEND_REQUEST_COMPLETE(sendreq); OMPI_THREAD_UNLOCK(&ompi_request_lock); } /** * Completion of a long or synchronous message - may need to schedule * additional fragments. */ static void mca_pml_ob1_send_completion( mca_bmi_base_module_t* bmi, struct mca_bmi_base_endpoint_t* ep, struct mca_bmi_base_descriptor_t* descriptor, int status) { mca_pml_ob1_send_request_t* sendreq = (mca_pml_ob1_send_request_t*)descriptor->des_cbdata; mca_pml_ob1_endpoint_t* bmi_ep = sendreq->req_endpoint; mca_bmi_base_segment_t* segments = descriptor->des_src; size_t i; /* check completion status */ if(OMPI_SUCCESS != status) { /* TSW - FIX */ ompi_output(0, "%s:%d FATAL", __FILE__, __LINE__); orte_errmgr.abort(); } /* count bytes of user data actually delivered */ for(i=0; ides_src_cnt; i++) { sendreq->req_bytes_delivered += segments[i].seg_len; } /* adjust for message header */ switch(((mca_pml_ob1_common_hdr_t*)segments->seg_addr.pval)->hdr_type) { case MCA_PML_OB1_HDR_TYPE_MATCH: sendreq->req_bytes_delivered -= sizeof(mca_pml_ob1_match_hdr_t); break; case MCA_PML_OB1_HDR_TYPE_RNDV: sendreq->req_bytes_delivered -= sizeof(mca_pml_ob1_rendezvous_hdr_t); break; case MCA_PML_OB1_HDR_TYPE_FRAG: sendreq->req_bytes_delivered -= sizeof(mca_pml_ob1_frag_hdr_t); break; default: ompi_output(0, "mca_pml_ob1_send_completion: invalid header type\n"); break; } /* check for request completion */ OMPI_THREAD_LOCK(&ompi_request_lock); if (OMPI_THREAD_ADD32(&sendreq->req_pipeline_depth,-1) == 0 && sendreq->req_bytes_delivered == sendreq->req_send.req_bytes_packed) { MCA_PML_OB1_SEND_REQUEST_COMPLETE(sendreq); } OMPI_THREAD_UNLOCK(&ompi_request_lock); /* return the descriptor */ bmi_ep->bmi_free(bmi_ep->bmi, descriptor); /* advance pending requests */ while(NULL != sendreq) { switch(sendreq->req_state) { case MCA_PML_OB1_SR_ACKED: mca_pml_ob1_send_request_schedule(sendreq); break; default: break; } OMPI_THREAD_LOCK(&mca_pml_ob1.ob1_lock); sendreq = (mca_pml_ob1_send_request_t*)ompi_list_remove_first(&mca_pml_ob1.send_pending); OMPI_THREAD_UNLOCK(&mca_pml_ob1.ob1_lock); } } /** * BMI requires "specially" allocated memory. Request a segment that * is used for initial hdr and any eager data. */ int mca_pml_ob1_send_request_start( mca_pml_ob1_send_request_t* sendreq, mca_pml_ob1_endpoint_t* endpoint) { mca_bmi_base_descriptor_t* descriptor; mca_bmi_base_segment_t* segment; mca_pml_ob1_hdr_t* hdr; size_t size = sendreq->req_send.req_bytes_packed; int rc; /* shortcut for zero byte */ if(size == 0 && sendreq->req_send.req_send_mode != MCA_PML_BASE_SEND_SYNCHRONOUS) { /* allocate a descriptor */ MCA_PML_OB1_ENDPOINT_DES_ALLOC(endpoint, descriptor); if(NULL == descriptor) { return OMPI_ERR_OUT_OF_RESOURCE; } segment = descriptor->des_src; segment->seg_len = sizeof(mca_pml_ob1_match_hdr_t); /* build hdr */ hdr = (mca_pml_ob1_hdr_t*)segment->seg_addr.pval; hdr->hdr_common.hdr_flags = 0; hdr->hdr_common.hdr_type = MCA_PML_OB1_HDR_TYPE_MATCH; hdr->hdr_match.hdr_contextid = sendreq->req_send.req_base.req_comm->c_contextid; hdr->hdr_match.hdr_src = sendreq->req_send.req_base.req_comm->c_my_rank; hdr->hdr_match.hdr_dst = sendreq->req_send.req_base.req_peer; hdr->hdr_match.hdr_tag = sendreq->req_send.req_base.req_tag; hdr->hdr_match.hdr_msg_length = 0; hdr->hdr_match.hdr_msg_seq = sendreq->req_send.req_base.req_sequence; /* short message */ descriptor->des_cbfunc = mca_pml_ob1_short_completion; /* request is complete at mpi level */ ompi_request_complete((ompi_request_t*)sendreq); } else { struct iovec iov; unsigned int iov_count; size_t max_data; bool ack = false; /* determine first fragment size */ if(size > endpoint->bmi_eager_limit - sizeof(mca_pml_ob1_hdr_t)) { size = endpoint->bmi_eager_limit - sizeof(mca_pml_ob1_hdr_t); ack = true; } else if (sendreq->req_send.req_send_mode == MCA_PML_BASE_SEND_SYNCHRONOUS) { ack = true; } /* if an acknowledgment is not required - can get by w/ shorter hdr */ if (ack == false) { int32_t free_after; /* allocate descriptor */ MCA_PML_OB1_ENDPOINT_DES_ALLOC(endpoint, descriptor); if(NULL == descriptor) { return OMPI_ERR_OUT_OF_RESOURCE; } segment = descriptor->des_src; /* pack the data into the supplied buffer */ iov.iov_base = (unsigned char*)segment->seg_addr.pval + sizeof(mca_pml_ob1_match_hdr_t); iov.iov_len = size; iov_count = 1; max_data = size; if((rc = ompi_convertor_pack( &sendreq->req_send.req_convertor, &iov, &iov_count, &max_data, &free_after)) < 0) { endpoint->bmi_free(endpoint->bmi, descriptor); return rc; } /* build match header */ hdr = (mca_pml_ob1_hdr_t*)segment->seg_addr.pval; hdr->hdr_common.hdr_flags = 0; hdr->hdr_common.hdr_type = MCA_PML_OB1_HDR_TYPE_MATCH; hdr->hdr_match.hdr_contextid = sendreq->req_send.req_base.req_comm->c_contextid; hdr->hdr_match.hdr_src = sendreq->req_send.req_base.req_comm->c_my_rank; hdr->hdr_match.hdr_dst = sendreq->req_send.req_base.req_peer; hdr->hdr_match.hdr_tag = sendreq->req_send.req_base.req_tag; hdr->hdr_match.hdr_msg_length = sendreq->req_send.req_bytes_packed; hdr->hdr_match.hdr_msg_seq = sendreq->req_send.req_base.req_sequence; /* update lengths */ segment->seg_len = sizeof(mca_pml_ob1_match_hdr_t) + max_data; sendreq->req_send_offset = max_data; sendreq->req_rdma_offset = max_data; /* short message */ descriptor->des_cbfunc = mca_pml_ob1_short_completion; /* request is complete at mpi level */ ompi_request_complete((ompi_request_t*)sendreq); /* rendezvous header is required */ } else { int32_t free_after; /* allocate space for hdr + first fragment */ descriptor = endpoint->bmi_alloc(endpoint->bmi, size); if(NULL == descriptor) { return OMPI_ERR_OUT_OF_RESOURCE; } segment = descriptor->des_src; /* pack the data into the supplied buffer */ iov.iov_base = (unsigned char*)segment->seg_addr.pval + sizeof(mca_pml_ob1_rendezvous_hdr_t); iov.iov_len = size; iov_count = 1; max_data = size; if((rc = ompi_convertor_pack( &sendreq->req_send.req_convertor, &iov, &iov_count, &max_data, &free_after)) < 0) { endpoint->bmi_free(endpoint->bmi, descriptor); return rc; } /* build hdr */ hdr = (mca_pml_ob1_hdr_t*)segment->seg_addr.pval; hdr->hdr_common.hdr_flags = 0; hdr->hdr_common.hdr_type = MCA_PML_OB1_HDR_TYPE_RNDV; hdr->hdr_match.hdr_contextid = sendreq->req_send.req_base.req_comm->c_contextid; hdr->hdr_match.hdr_src = sendreq->req_send.req_base.req_comm->c_my_rank; hdr->hdr_match.hdr_dst = sendreq->req_send.req_base.req_peer; hdr->hdr_match.hdr_tag = sendreq->req_send.req_base.req_tag; hdr->hdr_match.hdr_msg_length = sendreq->req_send.req_bytes_packed; hdr->hdr_match.hdr_msg_seq = sendreq->req_send.req_base.req_sequence; hdr->hdr_rndv.hdr_src_req.lval = 0; /* for VALGRIND/PURIFY - REPLACE WITH MACRO */ hdr->hdr_rndv.hdr_src_req.pval = sendreq; hdr->hdr_rndv.hdr_frag_length = max_data; /* update lengths with number of bytes actually packed */ segment->seg_len = sizeof(mca_pml_ob1_rendezvous_hdr_t) + max_data; sendreq->req_send_offset = max_data; /* long message */ descriptor->des_cbfunc = mca_pml_ob1_send_completion; } } descriptor->des_cbdata = sendreq; OMPI_THREAD_ADD32(&sendreq->req_pipeline_depth,1); /* send */ rc = endpoint->bmi_send( endpoint->bmi, endpoint->bmi_endpoint, descriptor, MCA_BMI_TAG_PML); if(OMPI_SUCCESS != rc) { endpoint->bmi_free(endpoint->bmi,descriptor); } return rc; } /** * */ int mca_pml_ob1_send_request_schedule(mca_pml_ob1_send_request_t* sendreq) { /* * Only allow one thread in this routine for a given request. * However, we cannot block callers on a mutex, so simply keep track * of the number of times the routine has been called and run through * the scheduling logic once for every call. */ if(OMPI_THREAD_ADD32(&sendreq->req_lock,1) == 1) { mca_pml_ob1_proc_t* proc = sendreq->req_proc; size_t num_bmi_avail = mca_pml_ob1_ep_array_get_size(&proc->bmi_send); do { /* allocate remaining bytes to BMIs */ size_t bytes_remaining = sendreq->req_rdma_offset - sendreq->req_send_offset; while(bytes_remaining > 0 && sendreq->req_pipeline_depth < mca_pml_ob1.send_pipeline_depth) { mca_pml_ob1_endpoint_t* ep = mca_pml_ob1_ep_array_get_next(&proc->bmi_send); mca_pml_ob1_frag_hdr_t* hdr; mca_bmi_base_descriptor_t* des; int rc; /* if there is only one bmi available or the size is less than * than the min fragment size, schedule the rest via this bmi */ size_t size; if(num_bmi_avail == 1 || bytes_remaining < ep->bmi_min_send_size) { size = bytes_remaining; /* otherwise attempt to give the BMI 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 = (ep->bmi_weight * bytes_remaining) / 100; } /* makes sure that we don't exceed BMI max send size */ if (ep->bmi_max_send_size != 0 && size > ep->bmi_max_send_size - sizeof(mca_pml_ob1_frag_hdr_t)) { size = ep->bmi_max_send_size - sizeof(mca_pml_ob1_frag_hdr_t); } /* pack into a descriptor */ des = ep->bmi_prepare_src( ep->bmi, ep->bmi_endpoint, &sendreq->req_send.req_convertor, sizeof(mca_pml_ob1_frag_hdr_t), &size); if(des == NULL) { OMPI_THREAD_LOCK(&mca_pml_ob1.lock); ompi_list_append(&mca_pml_ob1.send_pending, (ompi_list_item_t*)sendreq); OMPI_THREAD_UNLOCK(&mca_pml_ob1.lock); break; } des->des_cbfunc = mca_pml_ob1_send_completion; des->des_cbdata = sendreq; /* setup header */ hdr = (mca_pml_ob1_frag_hdr_t*)des->des_src->seg_addr.pval; hdr->hdr_common.hdr_flags = 0; hdr->hdr_common.hdr_type = MCA_PML_OB1_HDR_TYPE_FRAG; hdr->hdr_frag_length = size; hdr->hdr_frag_offset = sendreq->req_send_offset; hdr->hdr_src_req.pval = sendreq; hdr->hdr_dst_req = sendreq->req_recv; /* update state */ sendreq->req_send_offset += size; OMPI_THREAD_ADD32(&sendreq->req_pipeline_depth,1); /* initiate send - note that this may complete before the call returns */ rc = ep->bmi_send(ep->bmi, ep->bmi_endpoint, des, MCA_BMI_TAG_PML); if(rc == OMPI_SUCCESS) { bytes_remaining -= size; } else { sendreq->req_send_offset -= size; OMPI_THREAD_ADD32(&sendreq->req_pipeline_depth,-1); ep->bmi_free(ep->bmi,des); OMPI_THREAD_LOCK(&mca_pml_ob1.lock); ompi_list_append(&mca_pml_ob1.send_pending, (ompi_list_item_t*)sendreq); OMPI_THREAD_UNLOCK(&mca_pml_ob1.lock); break; } } } while (OMPI_THREAD_ADD32(&sendreq->req_lock,-1) > 0); } return OMPI_SUCCESS; } /** * Return resources used by the RDMA */ static void mca_pml_ob1_fin_completion( mca_bmi_base_module_t* bmi, struct mca_bmi_base_endpoint_t* ep, struct mca_bmi_base_descriptor_t* des, int status) { mca_pml_ob1_rdma_frag_t* frag = (mca_pml_ob1_rdma_frag_t*)des->des_cbdata; MCA_PML_OB1_RDMA_FRAG_RETURN(frag); bmi->bmi_free(bmi,des); } /** * An RDMA put operation has completed: * (1) Update request status and if required set completed * (2) Send FIN control message to the destination */ static void mca_pml_ob1_put_completion( mca_bmi_base_module_t* bmi, struct mca_bmi_base_endpoint_t* ep, struct mca_bmi_base_descriptor_t* des, int status) { mca_pml_ob1_rdma_frag_t* frag = (mca_pml_ob1_rdma_frag_t*)des->des_cbdata; mca_pml_ob1_send_request_t* sendreq = frag->rdma_req; mca_bmi_base_descriptor_t* fin; mca_pml_ob1_fin_hdr_t* hdr; int rc; /* check completion status */ if(OMPI_SUCCESS != status) { /* TSW - FIX */ ORTE_ERROR_LOG(status); orte_errmgr.abort(); } /* check for request completion */ OMPI_THREAD_LOCK(&ompi_request_lock); sendreq->req_bytes_delivered += frag->rdma_length; if(sendreq->req_bytes_delivered >= sendreq->req_send.req_bytes_packed) { MCA_PML_OB1_SEND_REQUEST_COMPLETE(sendreq); } OMPI_THREAD_UNLOCK(&ompi_request_lock); /* allocate descriptor for fin control message - note that * the rdma descriptor cannot be reused as it points directly * at the user buffer */ frag->rdma_state = MCA_PML_OB1_RDMA_FIN; fin = bmi->bmi_alloc(bmi,sizeof(mca_pml_ob1_fin_hdr_t)); if(NULL == fin) { OMPI_THREAD_LOCK(&mca_pml_ob1.lock); ompi_list_append(&mca_pml_ob1.rdma_pending, (ompi_list_item_t*)frag); OMPI_THREAD_LOCK(&mca_pml_ob1.lock); goto cleanup; } fin->des_cbfunc = mca_pml_ob1_fin_completion; fin->des_cbdata = frag; /* fill in header */ hdr = (mca_pml_ob1_fin_hdr_t*)fin->des_src->seg_addr.pval; hdr->hdr_common.hdr_flags = 0; hdr->hdr_common.hdr_type = MCA_PML_OB1_HDR_TYPE_FIN; hdr->hdr_src = frag->rdma_hdr.hdr_rdma.hdr_src; hdr->hdr_dst = frag->rdma_hdr.hdr_rdma.hdr_dst; hdr->hdr_rdma_offset = frag->rdma_hdr.hdr_rdma.hdr_rdma_offset; hdr->hdr_rdma_length = frag->rdma_length; /* queue request */ rc = bmi->bmi_send( bmi, ep, fin, MCA_BMI_TAG_PML); if(OMPI_SUCCESS != rc) { bmi->bmi_free(bmi, fin); if(rc == OMPI_ERR_OUT_OF_RESOURCE) { OMPI_THREAD_LOCK(&mca_pml_ob1.lock); ompi_list_append(&mca_pml_ob1.rdma_pending, (ompi_list_item_t*)frag); OMPI_THREAD_LOCK(&mca_pml_ob1.lock); } else { /* TSW - FIX */ ORTE_ERROR_LOG(rc); orte_errmgr.abort(); } } cleanup: /* return rdma descriptor - do this after queuing the fin message - as * release rdma resources (unpin memory) can take some time. */ des->des_dst = NULL; des->des_src_cnt = 0; bmi->bmi_free(bmi, des); } /** * Receiver has scheduled an RDMA operation: * (1) Allocate an RDMA fragment to maintain the state of the operation * (2) Call BMI prepare_src to pin/prepare source buffers * (3) Queue the RDMA put */ void mca_pml_ob1_send_request_put( mca_pml_ob1_send_request_t* sendreq, mca_bmi_base_module_t* bmi, mca_pml_ob1_rdma_hdr_t* hdr) { mca_pml_ob1_proc_t* proc = sendreq->req_proc; mca_pml_ob1_endpoint_t* ep = mca_pml_ob1_ep_array_find(&proc->bmi_rdma,bmi); mca_bmi_base_descriptor_t* des; mca_pml_ob1_rdma_frag_t* frag; size_t offset = hdr->hdr_rdma_offset; size_t i, size = 0; int rc; MCA_PML_OB1_RDMA_FRAG_ALLOC(frag, rc); if(NULL == frag) { /* TSW - FIX */ ORTE_ERROR_LOG(rc); orte_errmgr.abort(); } /* setup fragment */ for(i=0; ihdr_seg_cnt; i++) { size += hdr->hdr_segs[i].seg_len; frag->rdma_segs[i] = hdr->hdr_segs[i]; } frag->rdma_hdr.hdr_rdma = *hdr; frag->rdma_state = MCA_PML_OB1_RDMA_PREPARE; /* setup descriptor */ ompi_convertor_set_position(&sendreq->req_send.req_convertor, &offset); des = bmi->bmi_prepare_src( bmi, ep->bmi_endpoint, &sendreq->req_send.req_convertor, 0, &size); if(NULL == des) { OMPI_THREAD_LOCK(&mca_pml_ob1.lock); ompi_list_append(&mca_pml_ob1.rdma_pending, (ompi_list_item_t*)frag); OMPI_THREAD_UNLOCK(&mca_pml_ob1.lock); } frag->rdma_state = MCA_PML_OB1_RDMA_PUT; frag->rdma_length = size; frag->rdma_req = sendreq; des->des_dst = frag->rdma_segs; des->des_dst_cnt = hdr->hdr_seg_cnt; des->des_cbfunc = mca_pml_ob1_put_completion; des->des_cbdata = frag; /* queue put */ if(OMPI_SUCCESS != (rc = bmi->bmi_put(bmi, ep->bmi_endpoint, des))) { if(rc == OMPI_ERR_OUT_OF_RESOURCE) { OMPI_THREAD_LOCK(&mca_pml_ob1.lock); ompi_list_append(&mca_pml_ob1.rdma_pending, (ompi_list_item_t*)frag); OMPI_THREAD_UNLOCK(&mca_pml_ob1.lock); } else { /* TSW - FIX */ ORTE_ERROR_LOG(rc); orte_errmgr.abort(); } } }