/* * Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana * University Research and Technology * Corporation. All rights reserved. * Copyright (c) 2004-2005 The University of Tennessee and The University * of Tennessee Research Foundation. 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 #include "ompi/types.h" #include "ompi/mca/pml/base/pml_base_sendreq.h" #include "orte/mca/ns/base/base.h" #include "orte/mca/oob/base/base.h" #include "orte/mca/rml/rml.h" #include "orte/mca/errmgr/errmgr.h" #include "orte/dss/dss.h" #include "btl_openib.h" #include "btl_openib_endpoint.h" #include "btl_openib_proc.h" #include "btl_openib_frag.h" #include "ompi/class/ompi_free_list.h" #include #include static void mca_btl_openib_endpoint_construct(mca_btl_base_endpoint_t* endpoint); static void mca_btl_openib_endpoint_destruct(mca_btl_base_endpoint_t* endpoint); int mca_btl_openib_endpoint_create_qp( mca_btl_openib_module_t* openib_btl, struct ibv_pd* pd, struct ibv_cq* cq, #if OMPI_MCA_BTL_OPENIB_HAVE_SRQ struct ibv_srq* srq, #endif struct ibv_qp_attr* qp_attr, struct ibv_qp** qp ); int mca_btl_openib_endpoint_qp_init_query( mca_btl_openib_module_t* openib_btl, struct ibv_qp* qp, struct ibv_qp_attr* attr, uint32_t lcl_psn, uint32_t rem_qp_num, uint32_t rem_psn, uint16_t rem_lid, uint32_t port_num ); /* * post a send to the work queue */ static inline int mca_btl_openib_endpoint_post_send(mca_btl_openib_module_t* openib_btl, mca_btl_openib_endpoint_t * endpoint, mca_btl_openib_frag_t * frag) { int do_rdma = 0; struct ibv_qp* ib_qp; struct ibv_send_wr* bad_wr; frag->sg_entry.addr = (unsigned long) frag->hdr; if((frag->base.des_flags & MCA_BTL_DES_FLAGS_PRIORITY) && frag->size <= openib_btl->super.btl_eager_limit){ /* check for a send wqe */ if (OPAL_THREAD_ADD32(&endpoint->sd_wqe_hp,-1) < 0) { OPAL_THREAD_ADD32(&endpoint->sd_wqe_hp,1); opal_list_append(&endpoint->pending_frags_hp, (opal_list_item_t *)frag); return OMPI_SUCCESS; } /* check for rdma tocken */ if (OPAL_THREAD_ADD32(&endpoint->eager_rdma_remote.tokens,-1) < 0) { OPAL_THREAD_ADD32(&endpoint->eager_rdma_remote.tokens,1); /* check for a token */ if(!mca_btl_openib_component.use_srq && OPAL_THREAD_ADD32(&endpoint->sd_tokens_hp,-1) < 0) { OPAL_THREAD_ADD32(&endpoint->sd_wqe_hp,1); OPAL_THREAD_ADD32(&endpoint->sd_tokens_hp,1); opal_list_append(&endpoint->pending_frags_hp, (opal_list_item_t *)frag); return OMPI_SUCCESS; } else if( mca_btl_openib_component.use_srq && OPAL_THREAD_ADD32(&openib_btl->sd_tokens_hp,-1) < 0) { /* queue the request */ OPAL_THREAD_ADD32(&endpoint->sd_wqe_hp,1); OPAL_THREAD_ADD32(&openib_btl->sd_tokens_hp,1); OPAL_THREAD_LOCK(&openib_btl->ib_lock); opal_list_append(&openib_btl->pending_frags_hp, (opal_list_item_t *)frag); OPAL_THREAD_UNLOCK(&openib_btl->ib_lock); return OMPI_SUCCESS; } } else { do_rdma = 1; } frag->hdr->credits = (endpoint->rd_credits_hp > 0) ? endpoint->rd_credits_hp : 0; OPAL_THREAD_ADD32(&endpoint->rd_credits_hp, -frag->hdr->credits); frag->hdr->rdma_credits = endpoint->eager_rdma_local.credits; OPAL_THREAD_ADD32(&endpoint->eager_rdma_local.credits, -frag->hdr->rdma_credits); ib_qp = endpoint->lcl_qp_hp; } else { /* check for a send wqe */ if (OPAL_THREAD_ADD32(&endpoint->sd_wqe_lp,-1) < 0) { OPAL_THREAD_ADD32(&endpoint->sd_wqe_lp,1); opal_list_append(&endpoint->pending_frags_lp, (opal_list_item_t *)frag); return OMPI_SUCCESS; /* check for a token */ } else if(!mca_btl_openib_component.use_srq && OPAL_THREAD_ADD32(&endpoint->sd_tokens_lp,-1) < 0 ) { OPAL_THREAD_ADD32(&endpoint->sd_wqe_lp,1); OPAL_THREAD_ADD32(&endpoint->sd_tokens_lp,1); opal_list_append(&endpoint->pending_frags_lp, (opal_list_item_t *)frag); return OMPI_SUCCESS; } else if(mca_btl_openib_component.use_srq && OPAL_THREAD_ADD32(&openib_btl->sd_tokens_lp,-1) < 0) { OPAL_THREAD_ADD32(&endpoint->sd_wqe_lp,1); OPAL_THREAD_ADD32(&openib_btl->sd_tokens_lp,1); OPAL_THREAD_LOCK(&openib_btl->ib_lock); opal_list_append(&openib_btl->pending_frags_lp, (opal_list_item_t *)frag); OPAL_THREAD_UNLOCK(&openib_btl->ib_lock); return OMPI_SUCCESS; /* queue the request */ } else { frag->hdr->credits = (endpoint->rd_credits_lp > 0) ? endpoint->rd_credits_lp : 0; OPAL_THREAD_ADD32(&endpoint->rd_credits_lp, -frag->hdr->credits); ib_qp = endpoint->lcl_qp_lp; } } frag->sg_entry.length = frag->segment.seg_len + sizeof(mca_btl_openib_header_t) + (do_rdma ? sizeof(mca_btl_openib_footer_t) : 0); if(frag->sg_entry.length <= openib_btl->ib_inline_max) { frag->wr_desc.sr_desc.send_flags = IBV_SEND_SIGNALED|IBV_SEND_INLINE; } else { frag->wr_desc.sr_desc.send_flags = IBV_SEND_SIGNALED; } if(do_rdma) { mca_btl_openib_footer_t* ftr = (mca_btl_openib_footer_t*)(((char*)frag->segment.seg_addr.pval) + frag->segment.seg_len); frag->wr_desc.sr_desc.opcode = IBV_WR_RDMA_WRITE; MCA_BTL_OPENIB_RDMA_FRAG_SET_SIZE(ftr, frag->sg_entry.length); MCA_BTL_OPENIB_RDMA_MAKE_LOCAL(ftr); #if OMPI_ENABLE_DEBUG ((mca_btl_openib_footer_t*)(((char*)frag->segment.seg_addr.pval) + frag->segment.seg_len))->seq = endpoint->eager_rdma_remote.seq++; #endif frag->wr_desc.sr_desc.wr.rdma.rkey = endpoint->eager_rdma_remote.rkey; frag->wr_desc.sr_desc.wr.rdma.remote_addr = (uintptr_t)endpoint->eager_rdma_remote.base.pval + endpoint->eager_rdma_remote.head * openib_btl->eager_rdma_frag_size + sizeof(mca_btl_openib_frag_t) + sizeof(mca_btl_openib_header_t) + frag->size + sizeof(mca_btl_openib_footer_t); frag->wr_desc.sr_desc.wr.rdma.remote_addr -= frag->sg_entry.length; MCA_BTL_OPENIB_RDMA_NEXT_INDEX (endpoint->eager_rdma_remote.head); } else { frag->wr_desc.sr_desc.opcode = IBV_WR_SEND; } if(ibv_post_send(ib_qp, &frag->wr_desc.sr_desc, &bad_wr)) { BTL_ERROR(("error posting send request errno says %s\n", strerror(errno))); return OMPI_ERROR; } #ifdef OMPI_MCA_BTL_OPENIB_HAVE_SRQ if(mca_btl_openib_component.use_srq) { MCA_BTL_OPENIB_POST_SRR_HIGH(openib_btl, 1); MCA_BTL_OPENIB_POST_SRR_LOW(openib_btl, 1); } else { #endif MCA_BTL_OPENIB_ENDPOINT_POST_RR_HIGH(endpoint, 1); MCA_BTL_OPENIB_ENDPOINT_POST_RR_LOW(endpoint, 1); #ifdef OMPI_MCA_BTL_OPENIB_HAVE_SRQ } #endif return OMPI_SUCCESS; } OBJ_CLASS_INSTANCE(mca_btl_openib_endpoint_t, opal_list_item_t, mca_btl_openib_endpoint_construct, mca_btl_openib_endpoint_destruct); /* * Initialize state of the endpoint instance. * */ static void mca_btl_openib_endpoint_construct(mca_btl_base_endpoint_t* endpoint) { endpoint->endpoint_btl = 0; endpoint->endpoint_proc = 0; endpoint->endpoint_tstamp = 0.0; endpoint->endpoint_state = MCA_BTL_IB_CLOSED; endpoint->endpoint_retries = 0; OBJ_CONSTRUCT(&endpoint->endpoint_lock, opal_mutex_t); OBJ_CONSTRUCT(&endpoint->pending_send_frags, opal_list_t); OBJ_CONSTRUCT(&endpoint->pending_frags_hp, opal_list_t); OBJ_CONSTRUCT(&endpoint->pending_frags_lp, opal_list_t); endpoint->lcl_qp_attr_hp = (struct ibv_qp_attr *) malloc(sizeof(struct ibv_qp_attr)); endpoint->lcl_qp_attr_lp = (struct ibv_qp_attr *) malloc(sizeof(struct ibv_qp_attr)); memset(endpoint->lcl_qp_attr_hp, 0, sizeof(struct ibv_qp_attr)); memset(endpoint->lcl_qp_attr_lp, 0, sizeof(struct ibv_qp_attr)); endpoint->rd_posted_hp = 0; endpoint->rd_posted_lp = 0; /* number of available send wqes */ endpoint->sd_wqe_hp = mca_btl_openib_component.rd_num; endpoint->sd_wqe_lp = mca_btl_openib_component.rd_num; /* zero these out w/ initial posting, so that we start out w/ * zero credits to return to peer */ endpoint->rd_credits_hp = -(mca_btl_openib_component.rd_num + mca_btl_openib_component.rd_rsv); endpoint->rd_credits_lp = -(mca_btl_openib_component.rd_num + mca_btl_openib_component.rd_rsv); endpoint->sd_credits_hp = 0; endpoint->sd_credits_lp = 0; /* initialize the high and low priority tokens */ endpoint->sd_tokens_hp = mca_btl_openib_component.rd_num; endpoint->sd_tokens_lp = mca_btl_openib_component.rd_num; endpoint->get_tokens = mca_btl_openib_component.ib_qp_ous_rd_atom; /* initialize RDMA eager related parts */ endpoint->eager_recv_count = 0; memset(&endpoint->eager_rdma_remote, 0, sizeof(mca_btl_openib_eager_rdma_remote_t)); memset (&endpoint->eager_rdma_local, 0, sizeof(mca_btl_openib_eager_rdma_local_t)); OBJ_CONSTRUCT(&endpoint->eager_rdma_local.lock, opal_mutex_t); endpoint->rem_info.rem_qp_num_hp = 0; endpoint->rem_info.rem_qp_num_lp = 0; endpoint->rem_info.rem_lid = 0; endpoint->rem_info.rem_psn_hp = 0; endpoint->rem_info.rem_psn_lp = 0; endpoint->rem_info.rem_subnet = 0; } /* * Destroy a endpoint * */ static void mca_btl_openib_endpoint_destruct(mca_btl_base_endpoint_t* endpoint) { } /* * Send connection information to remote endpoint using OOB * */ static void mca_btl_openib_endpoint_send_cb( int status, orte_process_name_t* endpoint, orte_buffer_t* buffer, orte_rml_tag_t tag, void* cbdata) { OBJ_RELEASE(buffer); } static int mca_btl_openib_endpoint_send_connect_data(mca_btl_base_endpoint_t* endpoint) { orte_buffer_t* buffer = OBJ_NEW(orte_buffer_t); int rc; if(NULL == buffer) { ORTE_ERROR_LOG(ORTE_ERR_OUT_OF_RESOURCE); return ORTE_ERR_OUT_OF_RESOURCE; } /* pack the info in the send buffer */ rc = orte_dss.pack(buffer, &endpoint->lcl_qp_hp->qp_num, 1, ORTE_UINT32); if(rc != ORTE_SUCCESS) { ORTE_ERROR_LOG(rc); return rc; } rc = orte_dss.pack(buffer, &endpoint->lcl_qp_lp->qp_num, 1, ORTE_UINT32); if(rc != ORTE_SUCCESS) { ORTE_ERROR_LOG(rc); return rc; } rc = orte_dss.pack(buffer, &endpoint->lcl_psn_hp, 1, ORTE_UINT32); if(rc != ORTE_SUCCESS) { ORTE_ERROR_LOG(rc); return rc; } rc = orte_dss.pack(buffer, &endpoint->lcl_psn_lp, 1, ORTE_UINT32); if(rc != ORTE_SUCCESS) { ORTE_ERROR_LOG(rc); return rc; } rc = orte_dss.pack(buffer, &endpoint->endpoint_btl->lid, 1, ORTE_UINT16); if(rc != ORTE_SUCCESS) { ORTE_ERROR_LOG(rc); return rc; } rc = orte_dss.pack(buffer, &((mca_btl_openib_endpoint_t*) endpoint)->subnet, 1, ORTE_UINT16); if(rc != ORTE_SUCCESS) { ORTE_ERROR_LOG(rc); return rc; } /* send to endpoint */ rc = orte_rml.send_buffer_nb(&endpoint->endpoint_proc->proc_guid, buffer, ORTE_RML_TAG_DYNAMIC-1, 0, mca_btl_openib_endpoint_send_cb, NULL); BTL_VERBOSE(("Sending High Priority QP num = %d, Low Priority QP num = %d, LID = %d", endpoint->lcl_qp_hp->qp_num, endpoint->lcl_qp_lp->qp_num, endpoint->endpoint_btl->lid)); if(rc < 0) { ORTE_ERROR_LOG(rc); return rc; } return OMPI_SUCCESS; } /* * Set remote connection info * (from OOB connection) * */ static int mca_btl_openib_endpoint_set_remote_info(mca_btl_base_endpoint_t* endpoint, mca_btl_openib_rem_info_t* rem_info) { memcpy(&((mca_btl_openib_endpoint_t*) endpoint)->rem_info, rem_info, sizeof(mca_btl_openib_rem_info_t)); BTL_VERBOSE(("Setting High Priority QP num = %d, Low Priority QP num %d, LID = %d", endpoint->rem_info.rem_qp_num_hp, endpoint->rem_info.rem_qp_num_lp, endpoint->rem_info.rem_lid)); return ORTE_SUCCESS; } /* * Start to connect to the endpoint. We send our Queue Pair * information over the TCP OOB communication mechanism. * On completion of our send, a send completion handler * is called. * */ static int mca_btl_openib_endpoint_start_connect(mca_btl_base_endpoint_t* endpoint) { int rc; mca_btl_openib_module_t* openib_btl = (mca_btl_openib_module_t*) endpoint->endpoint_btl; /* Create the High Priority Queue Pair */ if(OMPI_SUCCESS != (rc = mca_btl_openib_endpoint_create_qp(openib_btl, openib_btl->hca->ib_pd, openib_btl->ib_cq_hp, #ifdef OMPI_MCA_BTL_OPENIB_HAVE_SRQ openib_btl->srq_hp, #endif endpoint->lcl_qp_attr_hp, &endpoint->lcl_qp_hp))) { BTL_ERROR(("error creating queue pair, error code %d", rc)); return rc; } srand48(getpid() * time(NULL)); endpoint->lcl_psn_hp = lrand48() & 0xffffff; /* Create the Low Priority Queue Pair */ if(OMPI_SUCCESS != (rc = mca_btl_openib_endpoint_create_qp(openib_btl, openib_btl->hca->ib_pd, openib_btl->ib_cq_lp, #ifdef OMPI_MCA_BTL_OPENIB_HAVE_SRQ openib_btl->srq_lp, #endif endpoint->lcl_qp_attr_lp, &endpoint->lcl_qp_lp))) { BTL_ERROR(("error creating queue pair, error code %d", rc)); return rc; } endpoint->lcl_psn_lp = lrand48() & 0xffffff; BTL_VERBOSE(("Initialized High Priority QP num = %d, Low Priority QP num = %d, LID = %d", endpoint->lcl_qp_hp->qp_num, endpoint->lcl_qp_lp->qp_num, openib_btl->lid)); /* Send connection info over to remote endpoint */ endpoint->endpoint_state = MCA_BTL_IB_CONNECTING; if(OMPI_SUCCESS != (rc = mca_btl_openib_endpoint_send_connect_data(endpoint))) { BTL_ERROR(("error sending connect request, error code %d", rc)); return rc; } return OMPI_SUCCESS; } /* * Reply to a `start - connect' message * */ static int mca_btl_openib_endpoint_reply_start_connect(mca_btl_openib_endpoint_t *endpoint, mca_btl_openib_rem_info_t *rem_info) { int rc; mca_btl_openib_module_t* openib_btl = (mca_btl_openib_module_t*) endpoint->endpoint_btl; /* Create the High Priority Queue Pair */ if(OMPI_SUCCESS != (rc = mca_btl_openib_endpoint_create_qp(openib_btl, openib_btl->hca->ib_pd, openib_btl->ib_cq_hp, #ifdef OMPI_MCA_BTL_OPENIB_HAVE_SRQ openib_btl->srq_hp, #endif endpoint->lcl_qp_attr_hp, &endpoint->lcl_qp_hp))) { BTL_ERROR(("error creating queue pair, error code %d", rc)); return rc; } srand48(getpid() * time(NULL)); endpoint->lcl_psn_hp = lrand48() & 0xffffff; /* Create the Low Priority Queue Pair */ if(OMPI_SUCCESS != (rc = mca_btl_openib_endpoint_create_qp(openib_btl, openib_btl->hca->ib_pd, openib_btl->ib_cq_lp, #ifdef OMPI_MCA_BTL_OPENIB_HAVE_SRQ openib_btl->srq_lp, #endif endpoint->lcl_qp_attr_lp, &endpoint->lcl_qp_lp))) { BTL_ERROR(("error creating queue pair, error code %d", rc)); return rc; } endpoint->lcl_psn_lp = lrand48() & 0xffffff; BTL_VERBOSE(("Initialized High Priority QP num = %d, Low Priority QP num = %d, LID = %d", endpoint->lcl_qp_hp->qp_num, endpoint->lcl_qp_lp->qp_num, openib_btl->lid)); /* Set the remote side info */ mca_btl_openib_endpoint_set_remote_info(endpoint, rem_info); /* Connect to endpoint */ rc = mca_btl_openib_endpoint_connect(endpoint); if(rc != OMPI_SUCCESS) { BTL_ERROR(("error in endpoint connect error code is %d", rc)); return rc; } /* Send connection info over to remote endpoint */ endpoint->endpoint_state = MCA_BTL_IB_CONNECT_ACK; if(OMPI_SUCCESS != (rc = mca_btl_openib_endpoint_send_connect_data(endpoint))) { BTL_ERROR(("error in endpoint send connect request error code is %d", rc)); return rc; } return OMPI_SUCCESS; } /* * endpoint is waiting ack to final connection establishment.. */ static void mca_btl_openib_endpoint_waiting_ack(mca_btl_openib_endpoint_t *endpoint) { endpoint->endpoint_state = MCA_BTL_IB_WAITING_ACK; } /* * called when the openib has completed setup via the * OOB channel */ static void mca_btl_openib_endpoint_connected(mca_btl_openib_endpoint_t *endpoint) { opal_list_item_t *frag_item; mca_btl_openib_frag_t *frag; mca_btl_openib_module_t* openib_btl; endpoint->endpoint_state = MCA_BTL_IB_CONNECTED; endpoint->endpoint_btl->poll_cq = true; /** * The connection is correctly setup. Now we can decrease the event trigger. */ opal_progress_event_decrement(); /* While there are frags in the list, * process them */ while(!opal_list_is_empty(&(endpoint->pending_send_frags))) { frag_item = opal_list_remove_first(&(endpoint->pending_send_frags)); frag = (mca_btl_openib_frag_t *) frag_item; openib_btl = endpoint->endpoint_btl; /* We need to post this one */ if(OMPI_SUCCESS != mca_btl_openib_endpoint_post_send(openib_btl, endpoint, frag)) BTL_ERROR(("Error posting send")); } } /* * Non blocking OOB recv callback. * Read incoming QP and other info, and if this endpoint * is trying to connect, reply with our QP info, * otherwise try to modify QP's and establish * reliable connection * */ static void mca_btl_openib_endpoint_recv( int status, orte_process_name_t* endpoint, orte_buffer_t* buffer, orte_rml_tag_t tag, void* cbdata) { mca_btl_openib_proc_t *ib_proc; mca_btl_openib_endpoint_t *ib_endpoint; int endpoint_state; int rc; uint32_t i; size_t cnt = 1; mca_btl_openib_rem_info_t rem_info; /* start by unpacking data first so we know who is knocking at our door */ rc = orte_dss.unpack(buffer, &rem_info.rem_qp_num_hp, &cnt, ORTE_UINT32); if(ORTE_SUCCESS != rc) { ORTE_ERROR_LOG(rc); return; } rc = orte_dss.unpack(buffer, &rem_info.rem_qp_num_lp, &cnt, ORTE_UINT32); if(ORTE_SUCCESS != rc) { ORTE_ERROR_LOG(rc); return; } rc = orte_dss.unpack(buffer, &rem_info.rem_psn_hp, &cnt, ORTE_UINT32); if(ORTE_SUCCESS != rc) { ORTE_ERROR_LOG(rc); return; }rc = orte_dss.unpack(buffer, &rem_info.rem_psn_lp, &cnt, ORTE_UINT32); if(ORTE_SUCCESS != rc) { ORTE_ERROR_LOG(rc); return; } rc = orte_dss.unpack(buffer, &rem_info.rem_lid, &cnt, ORTE_UINT16); if(ORTE_SUCCESS != rc) { ORTE_ERROR_LOG(rc); return; } rc = orte_dss.unpack(buffer, &rem_info.rem_subnet, &cnt, ORTE_UINT16); if(ORTE_SUCCESS != rc) { ORTE_ERROR_LOG(rc); return; } #if 0 rc = orte_dss.unpack(buffer, &ib_endpoint->rdma_buf->r_key, &cnt, ORTE_UINT32); if(rc != ORTE_SUCCESS) { ORTE_ERROR_LOG(rc); return rc; } rc = orte_dss.unpack(buffer, &ib_endpoint->rdma_buf->rem_base, &cnt, ORTE_UINT32); if(rc != ORTE_SUCCESS) { ORTE_ERROR_LOG(rc); return rc; } rc = orte_dss.unpack(buffer, &ib_endpoint->rdma_buf->rem_size, &cnt, ORTE_UINT32); if(rc != ORTE_SUCCESS) { ORTE_ERROR_LOG(rc); return rc; } rc = orte_dss.unpack(buffer, &ib_endpoint->rdma_buf->rem_cnt, &cnt, ORTE_UINT32); if(rc != ORTE_SUCCESS) { ORTE_ERROR_LOG(rc); return rc; } #endif BTL_VERBOSE(("Received High Priority QP num = %d, Low Priority QP num %d, LID = %d", rem_info.rem_qp_num_hp, rem_info.rem_qp_num_lp, rem_info.rem_lid)); for(ib_proc = (mca_btl_openib_proc_t*) opal_list_get_first(&mca_btl_openib_component.ib_procs); ib_proc != (mca_btl_openib_proc_t*) opal_list_get_end(&mca_btl_openib_component.ib_procs); ib_proc = (mca_btl_openib_proc_t*)opal_list_get_next(ib_proc)) { if(orte_ns.compare(ORTE_NS_CMP_ALL, &ib_proc->proc_guid, endpoint) == 0) { bool found = false; /* Try to get the endpoint instance of this proc */ for(i = 0; i < ib_proc->proc_endpoint_count; i++) { mca_btl_openib_port_info_t port_info; port_info = ib_proc->proc_ports[i]; ib_endpoint = ib_proc->proc_endpoints[i]; if(ib_endpoint->rem_info.rem_lid && (ib_endpoint->rem_info.rem_lid == rem_info.rem_lid && ib_endpoint->rem_info.rem_qp_num_hp == rem_info.rem_qp_num_hp)) { /* we've seen them before! */ found = true; break; } } /* If we haven't seen this remote lid before then try to match on endpoint */ for(i = 0; !found && i < ib_proc->proc_endpoint_count; i++) { mca_btl_openib_port_info_t port_info; port_info = ib_proc->proc_ports[i]; ib_endpoint = ib_proc->proc_endpoints[i]; if(!ib_endpoint->rem_info.rem_lid && ib_endpoint->subnet == rem_info.rem_subnet) { /* found a match based on subnet! */ found = true; break; } } /* try finding an open port, even if subnets don't match */ for(i = 0; !found && i < ib_proc->proc_endpoint_count; i++) { mca_btl_openib_port_info_t port_info; port_info = ib_proc->proc_ports[i]; ib_endpoint = ib_proc->proc_endpoints[i]; if(!ib_endpoint->rem_info.rem_lid) { /* found an unused end-point */ found = true; break; } } if(!found) { BTL_ERROR(("can't find suitable endpoint for this peer\n")); return; } OPAL_THREAD_LOCK(&ib_endpoint->endpoint_lock); endpoint_state = ib_endpoint->endpoint_state; /* Update status */ switch(endpoint_state) { case MCA_BTL_IB_CLOSED : /* We had this connection closed before. * The endpoint is trying to connect. Move the * status of this connection to CONNECTING, * and then reply with our QP information */ if(OMPI_SUCCESS != (rc = mca_btl_openib_endpoint_reply_start_connect(ib_endpoint, &rem_info))) { BTL_ERROR(("error in endpoint reply start connect")); break; } /** As long as we expect a message from the peer (in order to setup the connection) * let the event engine pool the OOB events. Note: we increment it once peer active * connection. */ opal_progress_event_increment(); break; case MCA_BTL_IB_CONNECTING : mca_btl_openib_endpoint_set_remote_info(ib_endpoint, &rem_info); if(OMPI_SUCCESS != (rc = mca_btl_openib_endpoint_connect(ib_endpoint))) { BTL_ERROR(("endpoint connect error: %d", rc)); break; } /* Setup state as awaiting ack from peer */ mca_btl_openib_endpoint_waiting_ack(ib_endpoint); /* Send him an ack */ mca_btl_openib_endpoint_send_connect_data(ib_endpoint); break; case MCA_BTL_IB_WAITING_ACK: mca_btl_openib_endpoint_connected(ib_endpoint); break; case MCA_BTL_IB_CONNECT_ACK: mca_btl_openib_endpoint_send_connect_data(ib_endpoint); mca_btl_openib_endpoint_connected(ib_endpoint); break; case MCA_BTL_IB_CONNECTED : break; default : BTL_ERROR(("Invalid endpoint state %d", endpoint_state)); } OPAL_THREAD_UNLOCK(&ib_endpoint->endpoint_lock); break; } } } /* * Post the OOB recv (for receiving the peers information) */ void mca_btl_openib_post_recv() { orte_rml.recv_buffer_nb( ORTE_RML_NAME_ANY, ORTE_RML_TAG_DYNAMIC-1, ORTE_RML_PERSISTENT, mca_btl_openib_endpoint_recv, NULL); } /* * Attempt to send a fragment using a given endpoint. If the endpoint is not * connected, queue the fragment and start the connection as required. */ int mca_btl_openib_endpoint_send( mca_btl_base_endpoint_t* endpoint, mca_btl_openib_frag_t* frag ) { int rc; bool call_progress = false; mca_btl_openib_module_t *openib_btl; OPAL_THREAD_LOCK(&endpoint->endpoint_lock); switch(endpoint->endpoint_state) { case MCA_BTL_IB_CONNECTING: BTL_VERBOSE(("Queing because state is connecting")); opal_list_append(&endpoint->pending_send_frags, (opal_list_item_t *)frag); call_progress = true; rc = OMPI_SUCCESS; break; case MCA_BTL_IB_CONNECT_ACK: case MCA_BTL_IB_WAITING_ACK: BTL_VERBOSE(("Queuing because waiting for ack")); opal_list_append(&endpoint->pending_send_frags, (opal_list_item_t *)frag); call_progress = true; rc = OMPI_SUCCESS; break; case MCA_BTL_IB_CLOSED: BTL_VERBOSE(("Connection to endpoint closed ... connecting ...")); opal_list_append(&endpoint->pending_send_frags, (opal_list_item_t *)frag); rc = mca_btl_openib_endpoint_start_connect(endpoint); /** * As long as we expect a message from the peer (in order to setup the connection) * let the event engine pool the OOB events. Note: we increment it once peer active * connection. */ opal_progress_event_increment(); call_progress = true; break; case MCA_BTL_IB_FAILED: rc = OMPI_ERR_UNREACH; break; case MCA_BTL_IB_CONNECTED: { openib_btl = endpoint->endpoint_btl; BTL_VERBOSE(("Send to : %d, len : %lu, frag : %p", endpoint->endpoint_proc->proc_guid.vpid, frag->sg_entry.length, frag)); rc = mca_btl_openib_endpoint_post_send(openib_btl, endpoint, frag); break; } default: rc = OMPI_ERR_UNREACH; } OPAL_THREAD_UNLOCK(&endpoint->endpoint_lock); if(call_progress) opal_progress(); return rc; } /* * Complete connection to endpoint. */ int mca_btl_openib_endpoint_connect( mca_btl_openib_endpoint_t *endpoint) { int rc; mca_btl_openib_module_t* openib_btl = (mca_btl_openib_module_t*) endpoint->endpoint_btl; /* Connection establishment RC */ rc = mca_btl_openib_endpoint_qp_init_query( openib_btl, endpoint->lcl_qp_hp, endpoint->lcl_qp_attr_hp, endpoint->lcl_psn_hp, endpoint->rem_info.rem_qp_num_hp, endpoint->rem_info.rem_psn_hp, endpoint->rem_info.rem_lid, openib_btl->port_num ); if(rc != OMPI_SUCCESS) { return rc; } rc = mca_btl_openib_endpoint_qp_init_query( openib_btl, endpoint->lcl_qp_lp, endpoint->lcl_qp_attr_lp, endpoint->lcl_psn_lp, endpoint->rem_info.rem_qp_num_lp, endpoint->rem_info.rem_psn_lp, endpoint->rem_info.rem_lid, openib_btl->port_num ); if(rc != OMPI_SUCCESS) { return rc; } MCA_BTL_IB_FRAG_ALLOC_EAGER_WAIT(openib_btl, endpoint->hp_credit_frag, rc); MCA_BTL_IB_FRAG_ALLOC_EAGER_WAIT(openib_btl, endpoint->lp_credit_frag, rc); #ifdef OMPI_MCA_BTL_OPENIB_HAVE_SRQ if(mca_btl_openib_component.use_srq) { MCA_BTL_OPENIB_POST_SRR_HIGH(openib_btl, 1); MCA_BTL_OPENIB_POST_SRR_LOW(openib_btl, 1); } else { #endif MCA_BTL_OPENIB_ENDPOINT_POST_RR_HIGH(endpoint, 1); MCA_BTL_OPENIB_ENDPOINT_POST_RR_LOW(endpoint, 1); #ifdef OMPI_MCA_BTL_OPENIB_HAVE_SRQ } #endif return OMPI_SUCCESS; } /* * Create the queue pair note that this is just the initial * queue pair creation and we need to get the remote queue pair * info from the peer before the qp is usable, */ int mca_btl_openib_endpoint_create_qp( mca_btl_openib_module_t* openib_btl, struct ibv_pd* pd, struct ibv_cq* cq, #ifdef OMPI_MCA_BTL_OPENIB_HAVE_SRQ struct ibv_srq* srq, #endif struct ibv_qp_attr* qp_attr, struct ibv_qp** qp ) { { struct ibv_qp* my_qp; struct ibv_qp_init_attr qp_init_attr; memset(&qp_init_attr, 0, sizeof(struct ibv_qp_init_attr)); qp_init_attr.send_cq = cq; qp_init_attr.recv_cq = cq; qp_init_attr.cap.max_send_wr = mca_btl_openib_component.rd_num + 1; qp_init_attr.cap.max_recv_wr = mca_btl_openib_component.rd_num + mca_btl_openib_component.rd_rsv; qp_init_attr.cap.max_send_sge = mca_btl_openib_component.ib_sg_list_size; qp_init_attr.cap.max_recv_sge = mca_btl_openib_component.ib_sg_list_size; qp_init_attr.qp_type = IBV_QPT_RC; #ifdef OMPI_MCA_BTL_OPENIB_HAVE_SRQ if(mca_btl_openib_component.use_srq) { qp_init_attr.srq = srq; } #endif my_qp = ibv_create_qp(pd, &qp_init_attr); if(NULL == my_qp) { BTL_ERROR(("error creating qp errno says %s", strerror(errno))); return OMPI_ERROR; } (*qp) = my_qp; if(0 == (openib_btl->ib_inline_max = qp_init_attr.cap.max_inline_data)) { BTL_ERROR(("ibv_create_qp: returned 0 byte(s) for max inline data")); } } { qp_attr->qp_state = IBV_QPS_INIT; qp_attr->pkey_index = mca_btl_openib_component.ib_pkey_ix; qp_attr->port_num = openib_btl->port_num; qp_attr->qp_access_flags = IBV_ACCESS_REMOTE_WRITE | IBV_ACCESS_REMOTE_READ; if(ibv_modify_qp((*qp), qp_attr, IBV_QP_STATE | IBV_QP_PKEY_INDEX | IBV_QP_PORT | IBV_QP_ACCESS_FLAGS )) { BTL_ERROR(("error modifying qp to INIT errno says %s", strerror(errno))); return OMPI_ERROR; } } return OMPI_SUCCESS; } /* * The queue pair has been created and we have received the remote * queue pair information from the peer so we init this queue pair * and are ready to roll. */ int mca_btl_openib_endpoint_qp_init_query( mca_btl_openib_module_t* openib_btl, struct ibv_qp* qp, struct ibv_qp_attr* attr, uint32_t lcl_psn, uint32_t rem_qp_num, uint32_t rem_psn, uint16_t rem_lid, uint32_t port_num ) { attr->qp_state = IBV_QPS_RTR; attr->path_mtu = mca_btl_openib_component.ib_mtu; attr->dest_qp_num = rem_qp_num; attr->rq_psn = rem_psn; attr->max_dest_rd_atomic = mca_btl_openib_component.ib_max_rdma_dst_ops; attr->min_rnr_timer = mca_btl_openib_component.ib_min_rnr_timer; attr->ah_attr.is_global = 0; attr->ah_attr.dlid = rem_lid; attr->ah_attr.sl = mca_btl_openib_component.ib_service_level; attr->ah_attr.src_path_bits = openib_btl->src_path_bits; attr->ah_attr.port_num = port_num; if(ibv_modify_qp(qp, attr, IBV_QP_STATE | IBV_QP_AV | IBV_QP_PATH_MTU | IBV_QP_DEST_QPN | IBV_QP_RQ_PSN | IBV_QP_MAX_DEST_RD_ATOMIC | IBV_QP_MIN_RNR_TIMER)) { BTL_ERROR(("error modifing QP to RTR errno says %s", strerror(errno))); return OMPI_ERROR; } attr->qp_state = IBV_QPS_RTS; attr->timeout = mca_btl_openib_component.ib_timeout; attr->retry_cnt = mca_btl_openib_component.ib_retry_count; attr->rnr_retry = mca_btl_openib_component.ib_rnr_retry; attr->sq_psn = lcl_psn; attr->max_rd_atomic = mca_btl_openib_component.ib_max_rdma_dst_ops; if (ibv_modify_qp(qp, attr, IBV_QP_STATE | IBV_QP_TIMEOUT | IBV_QP_RETRY_CNT | IBV_QP_RNR_RETRY | IBV_QP_SQ_PSN | IBV_QP_MAX_QP_RD_ATOMIC)) { BTL_ERROR(("error modifying QP to RTS errno says %s", strerror(errno))); return OMPI_ERROR; } return OMPI_SUCCESS; } /** * Return control fragment. */ static void mca_btl_openib_endpoint_credits_lp( mca_btl_base_module_t* btl, struct mca_btl_base_endpoint_t* endpoint, struct mca_btl_base_descriptor_t* descriptor, int status) { int32_t credits; /* we don't acquire a wqe or token for credit message - so decrement */ OPAL_THREAD_ADD32(&endpoint->sd_wqe_lp,-1); /* check to see if there are addditional credits to return */ if ((credits = OPAL_THREAD_ADD32(&endpoint->sd_credits_lp,-1)) > 0) { OPAL_THREAD_ADD32(&endpoint->sd_credits_lp,-credits); if (endpoint->rd_credits_lp >= mca_btl_openib_component.rd_win && OPAL_THREAD_ADD32(&endpoint->sd_credits_lp,1) == 1) { mca_btl_openib_endpoint_send_credits_lp(endpoint); } } } /** * Return credits to peer */ void mca_btl_openib_endpoint_send_credits_lp( mca_btl_openib_endpoint_t* endpoint) { mca_btl_openib_module_t* openib_btl = endpoint->endpoint_btl; mca_btl_openib_frag_t* frag; struct ibv_send_wr* bad_wr; int rc; frag = endpoint->lp_credit_frag; frag->base.des_cbfunc = mca_btl_openib_endpoint_credits_lp; frag->base.des_cbdata = NULL; frag->endpoint = endpoint; frag->hdr->tag = MCA_BTL_TAG_BTL; frag->hdr->credits = endpoint->rd_credits_lp; OPAL_THREAD_ADD32(&endpoint->rd_credits_lp, -frag->hdr->credits); ((mca_btl_openib_control_header_t *)frag->segment.seg_addr.pval)->type = MCA_BTL_OPENIB_CONTROL_NOOP; frag->wr_desc.sr_desc.opcode = IBV_WR_SEND; frag->sg_entry.length = sizeof(mca_btl_openib_header_t) + sizeof(mca_btl_openib_control_header_t); frag->sg_entry.addr = (unsigned long) frag->hdr; if(frag->sg_entry.length <= openib_btl->ib_inline_max) { frag->wr_desc.sr_desc.send_flags = IBV_SEND_INLINE | IBV_SEND_SIGNALED; } else { frag->wr_desc.sr_desc.send_flags = IBV_SEND_SIGNALED; } if(ibv_post_send(endpoint->lcl_qp_lp, &frag->wr_desc.sr_desc, &bad_wr)) { OPAL_THREAD_ADD32(&endpoint->sd_credits_lp, -1); OPAL_THREAD_ADD32(&endpoint->rd_credits_lp, frag->hdr->credits); MCA_BTL_IB_FRAG_RETURN(openib_btl, frag); BTL_ERROR(("error posting send request errno %d says %s", strerror(errno))); return; } } /** * Return control fragment. */ static void mca_btl_openib_endpoint_credits_hp( mca_btl_base_module_t* btl, struct mca_btl_base_endpoint_t* endpoint, struct mca_btl_base_descriptor_t* descriptor, int status) { int32_t credits; /* we don't acquire a wqe or token for credit message - so decrement */ OPAL_THREAD_ADD32(&endpoint->sd_wqe_hp,-1); /* check to see if there are addditional credits to return */ if ((credits = OPAL_THREAD_ADD32(&endpoint->sd_credits_hp,-1)) > 0) { OPAL_THREAD_ADD32(&endpoint->sd_credits_hp,-credits); if ((endpoint->rd_credits_hp >= mca_btl_openib_component.rd_win || endpoint->eager_rdma_local.credits >= mca_btl_openib_component.rd_win) && OPAL_THREAD_ADD32(&endpoint->sd_credits_hp,1) == 1) { mca_btl_openib_endpoint_send_credits_hp(endpoint); } } } /** * Return credits to peer */ void mca_btl_openib_endpoint_send_credits_hp( mca_btl_openib_endpoint_t* endpoint) { mca_btl_openib_module_t* openib_btl = endpoint->endpoint_btl; mca_btl_openib_frag_t* frag; struct ibv_send_wr* bad_wr; int rc; frag = endpoint->hp_credit_frag; frag->base.des_cbfunc = mca_btl_openib_endpoint_credits_hp; frag->base.des_cbdata = NULL; frag->endpoint = endpoint; frag->hdr->tag = MCA_BTL_TAG_BTL; frag->hdr->credits = (endpoint->rd_credits_hp > 0) ? endpoint->rd_credits_hp : 0; OPAL_THREAD_ADD32(&endpoint->rd_credits_hp, -frag->hdr->credits); frag->hdr->rdma_credits = endpoint->eager_rdma_local.credits; OPAL_THREAD_ADD32(&endpoint->eager_rdma_local.credits, -frag->hdr->rdma_credits); ((mca_btl_openib_control_header_t *)frag->segment.seg_addr.pval)->type = MCA_BTL_OPENIB_CONTROL_NOOP; frag->wr_desc.sr_desc.opcode = IBV_WR_SEND; frag->sg_entry.length = sizeof(mca_btl_openib_header_t) + sizeof(mca_btl_openib_control_header_t); frag->sg_entry.addr = (unsigned long) frag->hdr; if(frag->sg_entry.length <= openib_btl->ib_inline_max) { frag->wr_desc.sr_desc.send_flags = IBV_SEND_INLINE | IBV_SEND_SIGNALED; } else { frag->wr_desc.sr_desc.send_flags = IBV_SEND_SIGNALED; } if(ibv_post_send(endpoint->lcl_qp_hp, &frag->wr_desc.sr_desc, &bad_wr)) { OPAL_THREAD_ADD32(&endpoint->sd_credits_hp, -1); OPAL_THREAD_ADD32(&endpoint->rd_credits_hp, frag->hdr->credits); MCA_BTL_IB_FRAG_RETURN(openib_btl, frag); BTL_ERROR(("error posting send request errno %d says %s", errno, strerror(errno))); return; } } static void mca_btl_openib_endpoint_eager_rdma( mca_btl_base_module_t* btl, struct mca_btl_base_endpoint_t* endpoint, struct mca_btl_base_descriptor_t* descriptor, int status) { MCA_BTL_IB_FRAG_RETURN(((mca_btl_openib_module_t*)btl), ((mca_btl_openib_frag_t*)descriptor)); } static int mca_btl_openib_endpoint_send_eager_rdma( mca_btl_base_endpoint_t* endpoint) { mca_btl_openib_module_t* openib_btl = endpoint->endpoint_btl; mca_btl_openib_eager_rdma_header_t *rdma_hdr; mca_btl_openib_frag_t* frag; int rc; MCA_BTL_IB_FRAG_ALLOC_EAGER(openib_btl, frag, rc); if(NULL == frag) { return -1; } frag->base.des_cbfunc = mca_btl_openib_endpoint_eager_rdma; frag->base.des_cbdata = NULL; frag->endpoint = endpoint; frag->base.des_flags |= MCA_BTL_DES_FLAGS_PRIORITY; frag->hdr->tag = MCA_BTL_TAG_BTL; rdma_hdr = (mca_btl_openib_eager_rdma_header_t*)frag->segment.seg_addr.pval; rdma_hdr->control.type = MCA_BTL_OPENIB_CONTROL_RDMA; rdma_hdr->rkey = endpoint->eager_rdma_local.reg->mr->rkey; rdma_hdr->rdma_start.pval = endpoint->eager_rdma_local.base.pval; frag->segment.seg_len = sizeof(mca_btl_openib_eager_rdma_header_t); if (mca_btl_openib_endpoint_post_send(openib_btl, endpoint, frag) != OMPI_SUCCESS) { MCA_BTL_IB_FRAG_RETURN(openib_btl, frag); BTL_ERROR(("Error sending RDMA buffer", strerror(errno))); return -1; } return 0; } /* create RDMA buffer for eager messages */ void mca_btl_openib_endpoint_connect_eager_rdma( mca_btl_openib_endpoint_t* endpoint) { mca_btl_openib_module_t* openib_btl = endpoint->endpoint_btl; char *buf; unsigned int i; OPAL_THREAD_LOCK(&endpoint->eager_rdma_local.lock); if (endpoint->eager_rdma_local.base.pval) goto unlock_rdma_local; buf = openib_btl->super.btl_mpool->mpool_alloc(openib_btl->super.btl_mpool, openib_btl->eager_rdma_frag_size * mca_btl_openib_component.eager_rdma_num, 0, 0, (mca_mpool_base_registration_t**)&endpoint->eager_rdma_local.reg); if(!buf) goto unlock_rdma_local; for(i = 0; i < mca_btl_openib_component.eager_rdma_num; i++) { ompi_free_list_item_t *item = (ompi_free_list_item_t *)(buf + i*openib_btl->eager_rdma_frag_size); item->user_data = endpoint->eager_rdma_local.reg; OBJ_CONSTRUCT(item, mca_btl_openib_recv_frag_eager_t); ((mca_btl_openib_frag_t*)item)->endpoint = endpoint; ((mca_btl_openib_frag_t*)item)->type = MCA_BTL_OPENIB_FRAG_EAGER_RDMA; } OPAL_THREAD_LOCK(&openib_btl->eager_rdma_lock); if(orte_pointer_array_add (&endpoint->eager_rdma_index, openib_btl->eager_rdma_buffers, endpoint) < 0) goto cleanup; endpoint->eager_rdma_local.base.pval = buf; openib_btl->eager_rdma_buffers_count++; if (mca_btl_openib_endpoint_send_eager_rdma(endpoint) == 0) { OPAL_THREAD_UNLOCK(&openib_btl->eager_rdma_lock); OPAL_THREAD_UNLOCK(&endpoint->eager_rdma_local.lock); return; } openib_btl->eager_rdma_buffers_count--; endpoint->eager_rdma_local.base.pval = NULL; orte_pointer_array_set_item(openib_btl->eager_rdma_buffers, endpoint->eager_rdma_index, NULL); cleanup: OPAL_THREAD_UNLOCK(&openib_btl->eager_rdma_lock); openib_btl->super.btl_mpool->mpool_free(openib_btl->super.btl_mpool, buf, (mca_mpool_base_registration_t*)endpoint->eager_rdma_local.reg); unlock_rdma_local: OPAL_THREAD_UNLOCK(&endpoint->eager_rdma_local.lock); }