/* * 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 "ompi/include/constants.h" #include "opal/event/event.h" #include "opal/util/if.h" #include "opal/util/argv.h" #include "opal/util/output.h" #include "mca/pml/pml.h" #include "mca/btl/btl.h" #include "opal/include/sys/timer.h" #include "mca/base/mca_base_param.h" #include "mca/errmgr/errmgr.h" #include "mca/mpool/base/base.h" #include "btl_openib.h" #include "btl_openib_frag.h" #include "btl_openib_endpoint.h" #include "mca/btl/base/base.h" #include "mca/btl/base/btl_base_error.h" #include "datatype/convertor.h" #include "mca/mpool/mpool.h" #include #include #include #include /* for strerror()*/ #include "mca/pml/base/pml_base_module_exchange.h" mca_btl_openib_component_t mca_btl_openib_component = { { /* First, the mca_base_component_t struct containing meta information about the component itself */ { /* Indicate that we are a pml v1.0.0 component (which also implies a specific MCA version) */ MCA_BTL_BASE_VERSION_1_0_0, "openib", /* MCA component name */ OMPI_MAJOR_VERSION, /* MCA component major version */ OMPI_MINOR_VERSION, /* MCA component minor version */ OMPI_RELEASE_VERSION, /* MCA component release version */ mca_btl_openib_component_open, /* component open */ mca_btl_openib_component_close /* component close */ }, /* Next the MCA v1.0.0 component meta data */ { /* Whether the component is checkpointable or not */ false }, mca_btl_openib_component_init, mca_btl_openib_component_progress, } }; /* * utility routines for parameter registration */ static inline void mca_btl_openib_param_register_string( const char* param_name, const char* param_desc, const char* default_value, char** out_value) { mca_base_param_reg_string(&mca_btl_openib_component.super.btl_version, param_name, param_desc, false, false, default_value, out_value); } static inline void mca_btl_openib_param_register_int( const char* param_name, const char* param_desc, int default_value, int* out_value) { mca_base_param_reg_int(&mca_btl_openib_component.super.btl_version, param_name, param_desc, false, false, default_value, out_value); } /* * Called by MCA framework to open the component, registers * component parameters. */ int mca_btl_openib_component_open(void) { /* initialize state */ mca_btl_openib_component.ib_num_btls=0; mca_btl_openib_component.openib_btls=NULL; /* initialize objects */ OBJ_CONSTRUCT(&mca_btl_openib_component.ib_procs, opal_list_t); /* register IB component parameters */ mca_btl_openib_param_register_int ("free_list_num", "intial size of free lists", 8, &mca_btl_openib_component.ib_free_list_num); mca_btl_openib_param_register_int ("free_list_max", "maximum size of free lists", -1, &mca_btl_openib_component.ib_free_list_max); mca_btl_openib_param_register_int ("free_list_inc", "increment size of free lists", 32, &mca_btl_openib_component.ib_free_list_inc); mca_btl_openib_param_register_string("mpool", "name of the memory pool to be used", "openib", &mca_btl_openib_component.ib_mpool_name); mca_btl_openib_param_register_int("reg_mru_len", "length of the registration cache most recently used list", 16, (int*) &mca_btl_openib_component.reg_mru_len); mca_btl_openib_param_register_int("use_srq", "if 1 use the IB shared receive queue to post receive descriptors", 0, (int*) &mca_btl_openib_component.use_srq); mca_btl_openib_param_register_int("ib_cq_size", "size of the IB completion queue", 1000, (int*) &mca_btl_openib_component.ib_cq_size); mca_btl_openib_param_register_int("ib_sg_list_size", "size of IB segment list", 3, (int*) &mca_btl_openib_component.ib_sg_list_size); mca_btl_openib_param_register_int("ib_pkey_ix", "IB pkey index", 0, (int*) &mca_btl_openib_component.ib_pkey_ix); mca_btl_openib_param_register_int("ib_psn", "IB Packet sequence starting number", 0, (int*) &mca_btl_openib_component.ib_psn); mca_btl_openib_param_register_int("ib_qp_ous_rd_atom", "IB outstanding atomic reads", 4, (int*) &mca_btl_openib_component.ib_qp_ous_rd_atom); mca_btl_openib_param_register_int("ib_mtu", "IB MTU", IBV_MTU_1024, (int*) &mca_btl_openib_component.ib_mtu); mca_btl_openib_param_register_int("ib_min_rnr_timer", "IB min rnr timer", 5, (int*) &mca_btl_openib_component.ib_min_rnr_timer); mca_btl_openib_param_register_int("ib_timeout", "IB transmit timeout", 10, (int*) &mca_btl_openib_component.ib_timeout); mca_btl_openib_param_register_int("ib_retry_count", "IB transmit retry count", 7, (int*) &mca_btl_openib_component.ib_retry_count); mca_btl_openib_param_register_int("ib_rnr_retry", "IB rnr retry", 7, (int*) &mca_btl_openib_component.ib_rnr_retry); mca_btl_openib_param_register_int("ib_max_rdma_dst_ops", "IB max rdma destination operations", 4, (int*) &mca_btl_openib_component.ib_max_rdma_dst_ops); mca_btl_openib_param_register_int("ib_service_level", "IB service level", 0, (int*) &mca_btl_openib_component.ib_service_level); mca_btl_openib_param_register_int("ib_static_rate", "IB static rate", 0, (int*) &mca_btl_openib_component.ib_static_rate); mca_btl_openib_param_register_int("ib_src_path_bits", "IB source path bits", 0, (int*) &mca_btl_openib_component.ib_src_path_bits); mca_btl_openib_param_register_int ("exclusivity", "BTL exclusivity", MCA_BTL_EXCLUSIVITY_DEFAULT, (int*) &mca_btl_openib_module.super.btl_exclusivity); mca_btl_openib_param_register_int("rd_num", "number of receive descriptors to post to a QP", 8, (int*) &mca_btl_openib_component.rd_num); mca_btl_openib_param_register_int("rd_low", "low water mark before reposting occurs", 6, (int*) &mca_btl_openib_component.rd_low); mca_btl_openib_param_register_int("rd_win", "window size at which generate explicity credit message", 4, (int*) &mca_btl_openib_component.rd_win); mca_btl_openib_component.rd_rsv = ((mca_btl_openib_component.rd_num<<1)-1) / mca_btl_openib_component.rd_win; mca_btl_openib_param_register_int("srq_rd_max", "Max number of receive descriptors posted per SRQ.", 1000, (int*) &mca_btl_openib_component.srq_rd_max); mca_btl_openib_param_register_int("srq_rd_per_peer", "Number of receive descriptors posted per peer. (SRQ)", 16, (int*) &mca_btl_openib_component.srq_rd_per_peer); mca_btl_openib_param_register_int("srq_sd_max", "Maximum number of send descriptors posted. (SRQ)", 8, &mca_btl_openib_component.srq_sd_max); mca_btl_openib_param_register_int ("eager_limit", "eager send limit", (32*1024),(int*) &mca_btl_openib_module.super.btl_eager_limit); mca_btl_openib_param_register_int ("min_send_size", "minimum send size", (64*1024),(int*) &mca_btl_openib_module.super.btl_min_send_size); mca_btl_openib_param_register_int ("max_send_size", "maximum send size", (64*1024), (int*) &mca_btl_openib_module.super.btl_max_send_size); mca_btl_openib_param_register_int("min_rdma_size", "minimum rdma size", 1024*1024, (int*) &mca_btl_openib_module.super.btl_min_rdma_size); mca_btl_openib_param_register_int("max_rdma_size", "maximium rdma size", 1024*1024, (int*) &mca_btl_openib_module.super.btl_max_rdma_size); mca_btl_openib_param_register_int("flags", "BTL flags, SEND=0, PUT=1, GET=2", MCA_BTL_FLAGS_PUT, (int*) &mca_btl_openib_module.super.btl_flags); mca_btl_openib_param_register_int("bandwidth", "Approximate maximum bandwidth of interconnect", 800, (int*) &mca_btl_openib_module.super.btl_bandwidth); mca_btl_openib_component.max_send_size = mca_btl_openib_module.super.btl_max_send_size; mca_btl_openib_component.eager_limit = mca_btl_openib_module.super.btl_eager_limit; return OMPI_SUCCESS; } /* * component cleanup - sanity checking of queue lengths */ int mca_btl_openib_component_close(void) { return OMPI_SUCCESS; } /* * Register OPENIB port information. The MCA framework * will make this available to all peers. */ static int mca_btl_openib_modex_send(void) { int rc; size_t i; size_t size; mca_btl_openib_port_info_t *ports = NULL; size = mca_btl_openib_component.ib_num_btls * sizeof (mca_btl_openib_port_info_t); if (size != 0) { ports = (mca_btl_openib_port_info_t *)malloc (size); if (NULL == ports) { return OMPI_ERR_OUT_OF_RESOURCE; } for (i = 0; i < mca_btl_openib_component.ib_num_btls; i++) { mca_btl_openib_module_t *btl = &mca_btl_openib_component.openib_btls[i]; ports[i] = btl->port_info; } } rc = mca_pml_base_modex_send (&mca_btl_openib_component.super.btl_version, ports, size); if (NULL != ports) { free (ports); } return rc; } /* * Callback function on control message. */ static void mca_btl_openib_control( struct mca_btl_base_module_t* btl, mca_btl_base_tag_t tag, mca_btl_base_descriptor_t* descriptor, void* cbdata) { /* dont return credits used for control messages */ mca_btl_openib_frag_t* frag = (mca_btl_openib_frag_t*)descriptor; mca_btl_openib_endpoint_t* endpoint = frag->endpoint; if(frag->size == mca_btl_openib_component.eager_limit) { OPAL_THREAD_ADD32(&endpoint->rd_credits_hp, -1); } else { OPAL_THREAD_ADD32(&endpoint->rd_credits_lp, -1); } } /* * IB component initialization: * (1) read interface list from kernel and compare against component parameters * then create a BTL instance for selected interfaces * (2) setup IB listen socket for incoming connection attempts * (3) register BTL parameters with the MCA */ mca_btl_base_module_t** mca_btl_openib_component_init(int *num_btl_modules, bool enable_progress_threads, bool enable_mpi_threads) { struct ibv_device **ib_devs; uint32_t num_devs; mca_btl_base_module_t** btls; uint32_t i,j, length; struct mca_mpool_base_resources_t mpool_resources; opal_list_t btl_list; mca_btl_openib_module_t * openib_btl; mca_btl_base_selected_module_t* ib_selected; opal_list_item_t* item; struct dlist *dev_list; struct ibv_device* ib_dev; unsigned short seedv[3]; /* initialization */ *num_btl_modules = 0; num_devs = 0; seedv[0] = orte_process_info.my_name->vpid; seedv[1] = opal_sys_timer_get_cycles(); seedv[2] = opal_sys_timer_get_cycles(); seed48(seedv); /* Determine the number of hca's available on the host */ dev_list = ibv_get_devices(); if (NULL == dev_list) { mca_btl_base_error_no_nics("OpenIB", "HCA"); mca_btl_openib_component.ib_num_btls = 0; mca_btl_openib_modex_send(); return NULL; } dlist_start(dev_list); dlist_for_each_data(dev_list, ib_dev, struct ibv_device) num_devs++; if(0 == num_devs) { mca_btl_base_error_no_nics("OpenIB", "HCA"); mca_btl_openib_modex_send(); return NULL; } /* Allocate space for the ib devices */ ib_devs = (struct ibv_device**) malloc(num_devs * sizeof(struct ibv_dev*)); if(NULL == ib_devs) { ORTE_ERROR_LOG(ORTE_ERR_OUT_OF_RESOURCE); return NULL; } dlist_start(dev_list); i = 0; dlist_for_each_data(dev_list, ib_dev, struct ibv_device) ib_devs[i++] = ib_dev; /** We must loop through all the hca id's, get there handles and for each hca we query the number of ports on the hca and set up a distinct btl module for each hca port */ OBJ_CONSTRUCT(&btl_list, opal_list_t); OBJ_CONSTRUCT(&mca_btl_openib_component.ib_lock, opal_mutex_t); for(i = 0; i < num_devs; i++){ struct ibv_device_attr ib_dev_attr; struct ibv_context* ib_dev_context; ib_dev = ib_devs[i]; ib_dev_context = ibv_open_device(ib_dev); if(!ib_dev_context) { BTL_ERROR((" error obtaining device context for %s errno says %s\n", ibv_get_device_name(ib_dev), strerror(errno))); return NULL; } if(ibv_query_device(ib_dev_context, &ib_dev_attr)){ BTL_ERROR(("error obtaining device attributes for %s errno says %s\n", ibv_get_device_name(ib_dev), strerror(errno))); return NULL; } /* Note ports are 1 based hence j = 1 */ for(j = 1; j <= ib_dev_attr.phys_port_cnt; j++){ struct ibv_port_attr* ib_port_attr; ib_port_attr = (struct ibv_port_attr*) malloc(sizeof(struct ibv_port_attr)); if(ibv_query_port(ib_dev_context, (uint8_t) j, ib_port_attr)){ BTL_ERROR(("error getting port attributes for device %s port number %d errno says %s", ibv_get_device_name(ib_dev), j, strerror(errno))); return NULL; } if( IBV_PORT_ACTIVE == ib_port_attr->state ){ openib_btl = (mca_btl_openib_module_t*) malloc(sizeof(mca_btl_openib_module_t)); memcpy(openib_btl, &mca_btl_openib_module, sizeof(mca_btl_openib_module)); ib_selected = OBJ_NEW(mca_btl_base_selected_module_t); ib_selected->btl_module = (mca_btl_base_module_t*) openib_btl; openib_btl->ib_dev = ib_dev; openib_btl->ib_dev_context = ib_dev_context; openib_btl->port_num = (uint8_t) j; openib_btl->ib_port_attr = ib_port_attr; openib_btl->port_info.subnet = ib_port_attr->sm_lid; /* store the sm_lid for multi-nic support */ openib_btl->ib_reg[MCA_BTL_TAG_BTL].cbfunc = mca_btl_openib_control; openib_btl->ib_reg[MCA_BTL_TAG_BTL].cbdata = NULL; opal_list_append(&btl_list, (opal_list_item_t*) ib_selected); mca_btl_openib_component.ib_num_btls ++; } else{ free(ib_port_attr); } } } /* Allocate space for btl modules */ mca_btl_openib_component.openib_btls = (mca_btl_openib_module_t*) malloc(sizeof(mca_btl_openib_module_t) * mca_btl_openib_component.ib_num_btls); if(NULL == mca_btl_openib_component.openib_btls) { ORTE_ERROR_LOG(ORTE_ERR_OUT_OF_RESOURCE); return NULL; } btls = (struct mca_btl_base_module_t**) malloc(mca_btl_openib_component.ib_num_btls * sizeof(struct mca_btl_openib_module_t*)); if(NULL == btls) { ORTE_ERROR_LOG(ORTE_ERR_OUT_OF_RESOURCE); return NULL; } for(i = 0; i < mca_btl_openib_component.ib_num_btls; i++){ item = opal_list_remove_first(&btl_list); ib_selected = (mca_btl_base_selected_module_t*)item; openib_btl = (mca_btl_openib_module_t*) ib_selected->btl_module; memcpy(&(mca_btl_openib_component.openib_btls[i]), openib_btl , sizeof(mca_btl_openib_module_t)); free(ib_selected); free(openib_btl); openib_btl = &mca_btl_openib_component.openib_btls[i]; openib_btl->rd_num = mca_btl_openib_component.rd_num + mca_btl_openib_component.rd_rsv; openib_btl->rd_low = mca_btl_openib_component.rd_low; openib_btl->num_peers = 0; openib_btl->sd_tokens_hp = openib_btl->sd_tokens_lp = mca_btl_openib_component.srq_sd_max; /* Initialize module state */ OBJ_CONSTRUCT(&openib_btl->pending_frags_hp, opal_list_t); OBJ_CONSTRUCT(&openib_btl->pending_frags_lp, opal_list_t); OBJ_CONSTRUCT(&openib_btl->ib_lock, opal_mutex_t); OBJ_CONSTRUCT(&openib_btl->send_free_eager, ompi_free_list_t); OBJ_CONSTRUCT(&openib_btl->send_free_max, ompi_free_list_t); OBJ_CONSTRUCT(&openib_btl->send_free_frag, ompi_free_list_t); OBJ_CONSTRUCT(&openib_btl->recv_free_eager, ompi_free_list_t); OBJ_CONSTRUCT(&openib_btl->recv_free_max, ompi_free_list_t); if(mca_btl_openib_module_init(openib_btl) != OMPI_SUCCESS) { free(ib_devs); return NULL; } mpool_resources.ib_pd = openib_btl->ib_pd; /* initialize the memory pool using the hca */ openib_btl->super.btl_mpool = mca_mpool_base_module_create(mca_btl_openib_component.ib_mpool_name, &openib_btl->super, &mpool_resources); if(NULL == openib_btl->super.btl_mpool) { BTL_ERROR(("error creating vapi memory pool! aborting openib btl initialization")); return NULL; } /* Initialize pool of send fragments */ length = sizeof(mca_btl_openib_frag_t) + sizeof(mca_btl_openib_header_t) + openib_btl->super.btl_eager_limit+ 2*MCA_BTL_IB_FRAG_ALIGN; ompi_free_list_init(&openib_btl->send_free_eager, length, OBJ_CLASS(mca_btl_openib_send_frag_eager_t), mca_btl_openib_component.ib_free_list_num, mca_btl_openib_component.ib_free_list_max, mca_btl_openib_component.ib_free_list_inc, openib_btl->super.btl_mpool); ompi_free_list_init(&openib_btl->recv_free_eager, length, OBJ_CLASS(mca_btl_openib_recv_frag_eager_t), mca_btl_openib_component.ib_free_list_num, mca_btl_openib_component.ib_free_list_max, mca_btl_openib_component.ib_free_list_inc, openib_btl->super.btl_mpool); length = sizeof(mca_btl_openib_frag_t) + sizeof(mca_btl_openib_header_t) + openib_btl->super.btl_max_send_size + 2*MCA_BTL_IB_FRAG_ALIGN; ompi_free_list_init(&openib_btl->send_free_max, length, OBJ_CLASS(mca_btl_openib_send_frag_max_t), mca_btl_openib_component.ib_free_list_num, mca_btl_openib_component.ib_free_list_max, mca_btl_openib_component.ib_free_list_inc, openib_btl->super.btl_mpool); /* Initialize pool of receive fragments */ ompi_free_list_init (&openib_btl->recv_free_max, length, OBJ_CLASS (mca_btl_openib_recv_frag_max_t), mca_btl_openib_component.ib_free_list_num, mca_btl_openib_component.ib_free_list_max, mca_btl_openib_component.ib_free_list_inc, openib_btl->super.btl_mpool); length = sizeof(mca_btl_openib_frag_t) + sizeof(mca_btl_openib_header_t)+ 2*MCA_BTL_IB_FRAG_ALIGN; ompi_free_list_init(&openib_btl->send_free_frag, length, OBJ_CLASS(mca_btl_openib_send_frag_frag_t), mca_btl_openib_component.ib_free_list_num, mca_btl_openib_component.ib_free_list_max, mca_btl_openib_component.ib_free_list_inc, openib_btl->super.btl_mpool); /* Initialize the rd_desc_post array for posting of rr*/ openib_btl->rd_desc_post = (struct ibv_recv_wr *) malloc(((mca_btl_openib_component.rd_num + mca_btl_openib_component.rd_rsv) * sizeof(struct ibv_recv_wr))); btls[i] = &openib_btl->super; } /* Post OOB receive to support dynamic connection setup */ mca_btl_openib_post_recv(); mca_btl_openib_modex_send(); *num_btl_modules = mca_btl_openib_component.ib_num_btls; free(ib_devs); return btls; } /* * IB component progress. */ int mca_btl_openib_wc_rdma_read = 0; int mca_btl_openib_wc_rdma_write = 0; int mca_btl_openib_component_progress() { uint32_t i; int count = 0,ne; int32_t credits; mca_btl_openib_frag_t* frag; mca_btl_openib_endpoint_t* endpoint; /* Poll for completions */ for(i = 0; i < mca_btl_openib_component.ib_num_btls; i++) { struct ibv_wc wc; mca_btl_openib_module_t* openib_btl = &mca_btl_openib_component.openib_btls[i]; memset(&wc, 0, sizeof(struct ibv_wc)); /* we have two completion queues, one for "high" priority and one for "low". * we will check the high priority and process them until there are none left. * note that low priority messages are only processed one per progress call. */ ne=ibv_poll_cq(openib_btl->ib_cq_hp, 1, &wc ); if(ne < 0 ){ BTL_ERROR(("error polling HP CQ with %d errno says %s\n", ne, strerror(errno))); } else if(wc.status != IBV_WC_SUCCESS) { BTL_ERROR(("error polling HP CQ with status %d for wr_id %llu opcode %d\n", wc.status, wc.wr_id, wc.opcode)); } else if(1 == ne) { BTL_VERBOSE(("completion queue event says opcode is %d\n", wc.opcode)); /* Handle work completions */ switch(wc.opcode) { case IBV_WC_RECV_RDMA_WITH_IMM: BTL_ERROR(("Got an RDMA with Immediate data Not supported!")); return OMPI_ERROR; case IBV_WC_SEND : frag = (mca_btl_openib_frag_t*) (unsigned long) wc.wr_id; endpoint = frag->endpoint; /* Process a completed send */ frag->base.des_cbfunc(&openib_btl->super, frag->endpoint, &frag->base, OMPI_SUCCESS); /* return send wqe */ OPAL_THREAD_ADD32(&endpoint->sd_wqe_hp, 1); /* check to see if we need to progress any pending desciptors */ while (!opal_list_is_empty(&endpoint->pending_frags_hp) && endpoint->sd_wqe_hp > 0 && endpoint->sd_tokens_hp > 0) { opal_list_item_t *frag_item; OPAL_THREAD_LOCK(&endpoint->endpoint_lock); frag_item = opal_list_remove_first(&(endpoint->pending_frags_hp)); OPAL_THREAD_UNLOCK(&endpoint->endpoint_lock); if(NULL == (frag = (mca_btl_openib_frag_t *) frag_item)) break; if(OMPI_SUCCESS != mca_btl_openib_endpoint_send(frag->endpoint, frag)) { BTL_ERROR(("error in posting pending send\n")); break; } } if(!mca_btl_openib_component.use_srq) { /* check to see if we need to return credits */ if( endpoint->rd_credits_hp >= mca_btl_openib_component.rd_win && OPAL_THREAD_ADD32(&endpoint->sd_credits_hp, 1) == 1) { mca_btl_openib_endpoint_send_credits_hp(endpoint); } } else if(OPAL_THREAD_ADD32(&openib_btl->sd_tokens_hp, 1) > 0 && !opal_list_is_empty(&openib_btl->pending_frags_hp)) { /* dequeue resources due to global flow control */ opal_list_item_t *frag_item; OPAL_THREAD_LOCK(&openib_btl->ib_lock); frag_item = opal_list_remove_first(&openib_btl->pending_frags_hp); OPAL_THREAD_UNLOCK(&openib_btl->ib_lock); if(NULL != (frag = (mca_btl_openib_frag_t *) frag_item) && OMPI_SUCCESS != mca_btl_openib_endpoint_send(frag->endpoint, frag)) { BTL_ERROR(("error in posting pending send\n")); } } count++; break; case IBV_WC_RECV: /* Process a RECV */ frag = (mca_btl_openib_frag_t*) (unsigned long) wc.wr_id; endpoint = (mca_btl_openib_endpoint_t*) frag->endpoint; credits = frag->hdr->credits; /* advance the segment address past the header and subtract from the length..*/ frag->segment.seg_len = wc.byte_len- ((unsigned char*) frag->segment.seg_addr.pval - (unsigned char*) frag->hdr); /* call registered callback */ openib_btl->ib_reg[frag->hdr->tag].cbfunc(&openib_btl->super, frag->hdr->tag, &frag->base, openib_btl->ib_reg[frag->hdr->tag].cbdata); OMPI_FREE_LIST_RETURN(&(openib_btl->recv_free_eager), (opal_list_item_t*) frag); #ifdef OMPI_MCA_BTL_OPENIB_HAVE_SRQ if(mca_btl_openib_component.use_srq) { /* repost receive descriptors */ OPAL_THREAD_ADD32((int32_t*) &openib_btl->srd_posted_hp, -1); MCA_BTL_OPENIB_POST_SRR_HIGH(openib_btl, 0); } else { #endif /* repost receive descriptors */ OPAL_THREAD_ADD32((int32_t*) &endpoint->rd_posted_hp, -1); MCA_BTL_OPENIB_ENDPOINT_POST_RR_HIGH(endpoint, 0); /* check to see if we need to progress any pending desciptors */ if( OPAL_THREAD_ADD32(&endpoint->sd_tokens_hp, credits) > 0) { while(!opal_list_is_empty(&endpoint->pending_frags_hp) && endpoint->sd_wqe_hp > 0 && endpoint->sd_tokens_hp > 0) { opal_list_item_t *frag_item; OPAL_THREAD_LOCK(&endpoint->endpoint_lock); frag_item = opal_list_remove_first(&(endpoint->pending_frags_hp)); OPAL_THREAD_UNLOCK(&endpoint->endpoint_lock); if(NULL == (frag = (mca_btl_openib_frag_t *) frag_item)) break; if(OMPI_SUCCESS != mca_btl_openib_endpoint_send(frag->endpoint, frag)) { BTL_ERROR(("error in posting pending send\n")); break; } } } /* check to see if we need to return credits */ if( endpoint->rd_credits_hp >= mca_btl_openib_component.rd_win && OPAL_THREAD_ADD32(&endpoint->sd_credits_hp, 1) == 1) { mca_btl_openib_endpoint_send_credits_hp(endpoint); } #ifdef OMPI_MCA_BTL_OPENIB_HAVE_SRQ } #endif count++; break; case IBV_WC_RDMA_READ: case IBV_WC_RDMA_WRITE: default: BTL_ERROR(("Unhandled work completion opcode is %d", wc.opcode)); break; } } ne=ibv_poll_cq(openib_btl->ib_cq_lp, 1, &wc ); if(ne < 0){ BTL_ERROR(("error polling LP CQ with %d errno says %s", ne, strerror(errno))); } else if(wc.status != IBV_WC_SUCCESS) { BTL_ERROR(("error polling LP CQ with status %d for wr_id %llu opcode %d", wc.status, wc.wr_id, wc.opcode)); } else if(1 == ne) { /* Handle n/w completions */ switch(wc.opcode) { case IBV_WC_RECV_RDMA_WITH_IMM: BTL_ERROR(("Got an RDMA with Immediate data Not supported!")); return OMPI_ERROR; case IBV_WC_SEND: frag = (mca_btl_openib_frag_t*) (unsigned long) wc.wr_id; endpoint = frag->endpoint; /* Process a completed send - receiver must return tokens */ frag->base.des_cbfunc(&openib_btl->super, frag->endpoint, &frag->base, OMPI_SUCCESS); /* return send wqe */ OPAL_THREAD_ADD32(&endpoint->sd_wqe_lp, 1); /* check to see if we need to progress any pending desciptors */ while (!opal_list_is_empty(&endpoint->pending_frags_lp) && endpoint->sd_wqe_lp > 0 && endpoint->sd_tokens_lp > 0) { opal_list_item_t *frag_item; OPAL_THREAD_LOCK(&endpoint->endpoint_lock); frag_item = opal_list_remove_first(&(endpoint->pending_frags_lp)); OPAL_THREAD_UNLOCK(&endpoint->endpoint_lock); if(NULL == (frag = (mca_btl_openib_frag_t *) frag_item)) break; MCA_BTL_IB_FRAG_PROGRESS(frag); } if( !mca_btl_openib_component.use_srq) { /* check to see if we need to return 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); } /* SRQ case */ } else if(OPAL_THREAD_ADD32(&openib_btl->sd_tokens_lp, 1) > 0 && !opal_list_is_empty(&openib_btl->pending_frags_lp)) { opal_list_item_t *frag_item; OPAL_THREAD_LOCK(&openib_btl->ib_lock); frag_item = opal_list_remove_first(&openib_btl->pending_frags_lp); OPAL_THREAD_UNLOCK(&openib_btl->ib_lock); if(NULL != (frag = (mca_btl_openib_frag_t *) frag_item)) { MCA_BTL_IB_FRAG_PROGRESS(frag); } } count++; break; case IBV_WC_RDMA_READ: mca_btl_openib_wc_rdma_read++; frag = (mca_btl_openib_frag_t*) (unsigned long) wc.wr_id; OPAL_THREAD_ADD32(&frag->endpoint->get_tokens, 1); /* fall through */ case IBV_WC_RDMA_WRITE: mca_btl_openib_wc_rdma_write++; frag = (mca_btl_openib_frag_t*) (unsigned long) wc.wr_id; endpoint = frag->endpoint; /* process a completed write */ frag->base.des_cbfunc(&openib_btl->super, frag->endpoint, &frag->base, OMPI_SUCCESS); /* return send wqe */ OPAL_THREAD_ADD32(&endpoint->sd_wqe_lp, 1); /* check for pending frags */ if(!opal_list_is_empty(&endpoint->pending_frags_lp)) { opal_list_item_t *frag_item; OPAL_THREAD_LOCK(&endpoint->endpoint_lock); frag_item = opal_list_remove_first(&endpoint->pending_frags_lp); OPAL_THREAD_UNLOCK(&endpoint->endpoint_lock); if(NULL != (frag = (mca_btl_openib_frag_t *) frag_item)) { MCA_BTL_IB_FRAG_PROGRESS(frag); } } if (mca_btl_openib_component.use_srq && endpoint->sd_wqe_lp > 0 && !opal_list_is_empty(&openib_btl->pending_frags_lp)) { opal_list_item_t *frag_item; OPAL_THREAD_LOCK(&openib_btl->ib_lock); frag_item = opal_list_remove_first(&openib_btl->pending_frags_lp); OPAL_THREAD_UNLOCK(&openib_btl->ib_lock); if(NULL != (frag = (mca_btl_openib_frag_t *) frag_item)) { MCA_BTL_IB_FRAG_PROGRESS(frag); } } count++; break; case IBV_WC_RECV: /* Process a RECV */ frag = (mca_btl_openib_frag_t*) (unsigned long) wc.wr_id; endpoint = (mca_btl_openib_endpoint_t*) frag->endpoint; credits = frag->hdr->credits; /* advance the segment address past the header and subtract from the length..*/ frag->segment.seg_len = wc.byte_len- ((unsigned char*) frag->segment.seg_addr.pval - (unsigned char*) frag->hdr); /* call registered callback */ openib_btl->ib_reg[frag->hdr->tag].cbfunc(&openib_btl->super, frag->hdr->tag, &frag->base, openib_btl->ib_reg[frag->hdr->tag].cbdata); OMPI_FREE_LIST_RETURN(&(openib_btl->recv_free_max), (opal_list_item_t*) frag); #ifdef OMPI_MCA_BTL_OPENIB_HAVE_SRQ if(mca_btl_openib_component.use_srq) { /* repost receive descriptors */ OPAL_THREAD_ADD32((int32_t*) &openib_btl->srd_posted_lp, -1); MCA_BTL_OPENIB_POST_SRR_LOW(openib_btl, 0); } else { #endif /* repost receive descriptors */ OPAL_THREAD_ADD32((int32_t*) &endpoint->rd_posted_lp, -1); MCA_BTL_OPENIB_ENDPOINT_POST_RR_LOW(endpoint, 0); /* check to see if we need to progress any pending desciptors */ if( OPAL_THREAD_ADD32(&endpoint->sd_tokens_lp, credits) > 0) { while(!opal_list_is_empty(&endpoint->pending_frags_lp) && endpoint->sd_wqe_lp > 0 && endpoint->sd_tokens_lp > 0) { opal_list_item_t *frag_item; OPAL_THREAD_LOCK(&endpoint->endpoint_lock); frag_item = opal_list_remove_first(&(endpoint->pending_frags_lp)); OPAL_THREAD_UNLOCK(&endpoint->endpoint_lock); if(NULL == (frag = (mca_btl_openib_frag_t *) frag_item)) break; MCA_BTL_IB_FRAG_PROGRESS(frag); } } /* check to see if we need to return 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); } #ifdef OMPI_MCA_BTL_OPENIB_HAVE_SRQ } #endif count++; break; default: BTL_ERROR(("Unhandled work completion opcode is %d", wc.opcode)); break; } } } return count; }