2e42b0afbd
This commit makes datagram checks time based and reduces their frequency when only the wildcard datagram is posted. This change improves latency on knl systems. Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
540 строки
21 KiB
C
540 строки
21 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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/*
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* Copyright (c) 2011-2017 Los Alamos National Security, LLC. All rights
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* reserved.
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* Copyright (c) 2011 UT-Battelle, LLC. All rights reserved.
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* Copyright (c) 2014-2015 Intel, Inc. 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 "opal_config.h"
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#include "btl_ugni.h"
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#include "btl_ugni_frag.h"
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#include "btl_ugni_smsg.h"
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#include "opal/include/opal/align.h"
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#include "opal/mca/pmix/pmix.h"
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#define INITIAL_GNI_EPS 1024
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static int
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mca_btl_ugni_setup_mpools (mca_btl_ugni_module_t *ugni_module);
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static void
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mca_btl_ugni_module_set_max_reg (mca_btl_ugni_module_t *ugni_module, int nlocal_procs);
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static int mca_btl_ugni_smsg_setup (int nprocs);
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int mca_btl_ugni_add_procs (struct mca_btl_base_module_t* btl, size_t nprocs,
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struct opal_proc_t **procs,
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struct mca_btl_base_endpoint_t **peers,
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opal_bitmap_t *reachable) {
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mca_btl_ugni_module_t *ugni_module = (mca_btl_ugni_module_t *) btl;
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int rc;
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void *mmap_start_addr;
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if (false == ugni_module->initialized) {
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/* TODO: need to think of something more elegant than this max array */
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rc = opal_pointer_array_init (&ugni_module->endpoints, INITIAL_GNI_EPS, 1 << 24, 512);
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if (OPAL_SUCCESS != rc) {
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BTL_ERROR(("error inializing the endpoint array. rc = %d", rc));
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return rc;
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}
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/* NTH: might want to vary this size based off the universe size (if
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* one exists). the table is only used for connection lookup and
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* endpoint removal. */
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rc = opal_hash_table_init (&ugni_module->id_to_endpoint, INITIAL_GNI_EPS);
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if (OPAL_SUCCESS != rc) {
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BTL_ERROR(("error initializing the endpoint hash. rc = %d", rc));
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return rc;
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}
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}
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for (size_t i = 0 ; i < nprocs ; ++i) {
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peers[i] = mca_btl_ugni_get_ep (btl, procs[i]);
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if (NULL == peers[i]) {
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continue;
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}
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if (procs[i] == opal_proc_local_get ()) {
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ugni_module->local_ep = peers[i];
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}
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/* Set the reachable bit if necessary */
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if (reachable) {
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(void) opal_bitmap_set_bit (reachable, i);
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}
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}
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mca_btl_ugni_module_set_max_reg (ugni_module, ugni_module->nlocal_procs);
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if (false == ugni_module->initialized) {
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for (int i = 0 ; i < mca_btl_ugni_component.virtual_device_count ; ++i) {
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mca_btl_ugni_device_t *device = ugni_module->devices + i;
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rc = GNI_CqCreate (device->dev_handle, mca_btl_ugni_component.local_cq_size, 0,
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GNI_CQ_NOBLOCK, NULL, NULL, &device->dev_rdma_local_cq.gni_handle);
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if (GNI_RC_SUCCESS != rc) {
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BTL_ERROR(("error creating local BTE/FMA CQ"));
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return mca_btl_rc_ugni_to_opal (rc);
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}
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rc = GNI_CqCreate (device->dev_handle, mca_btl_ugni_component.local_cq_size,
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0, GNI_CQ_NOBLOCK, NULL, NULL, &device->dev_smsg_local_cq.gni_handle);
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if (GNI_RC_SUCCESS != rc) {
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BTL_ERROR(("error creating local SMSG CQ"));
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return mca_btl_rc_ugni_to_opal (rc);
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}
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if (mca_btl_ugni_component.progress_thread_enabled) {
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rc = GNI_CqCreate (device->dev_handle, mca_btl_ugni_component.local_cq_size,
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0, GNI_CQ_BLOCKING, NULL, NULL, &device->dev_rdma_local_irq_cq.gni_handle);
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if (GNI_RC_SUCCESS != rc) {
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BTL_ERROR(("error creating local BTE/FMA CQ"));
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return mca_btl_rc_ugni_to_opal (rc);
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}
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}
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}
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rc = GNI_CqCreate (ugni_module->devices[0].dev_handle, mca_btl_ugni_component.remote_cq_size,
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0, GNI_CQ_NOBLOCK, NULL, NULL, &ugni_module->smsg_remote_cq);
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if (GNI_RC_SUCCESS != rc) {
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BTL_ERROR(("error creating remote SMSG CQ"));
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return mca_btl_rc_ugni_to_opal (rc);
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}
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if (mca_btl_ugni_component.progress_thread_enabled) {
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rc = GNI_CqCreate (ugni_module->devices[0].dev_handle, mca_btl_ugni_component.remote_cq_size,
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0, GNI_CQ_BLOCKING, NULL, NULL, &ugni_module->smsg_remote_irq_cq);
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if (GNI_RC_SUCCESS != rc) {
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BTL_ERROR(("error creating remote SMSG CQ"));
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return mca_btl_rc_ugni_to_opal (rc);
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}
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}
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rc = mca_btl_ugni_setup_mpools (ugni_module);
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if (OPAL_UNLIKELY(OPAL_SUCCESS != rc)) {
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BTL_ERROR(("btl/ugni error setting up mpools/free lists"));
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return rc;
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}
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rc = mca_btl_ugni_smsg_init (ugni_module);
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if (OPAL_UNLIKELY(OPAL_SUCCESS != rc)) {
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BTL_ERROR(("btl/ugni error initializing SMSG"));
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return rc;
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}
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/*
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* If progress thread enabled, registered a page of memory
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* with the smsg_remote_irq_cq. This memory handle is passed
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* to ranks which want to communicate with this rank. A rank which
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* posts a GNI_PostCqWrite targeting this memory handle generates
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* an IRQ at the target node, which ultimately causes the progress
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* thread in the target rank to become schedulable.
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*/
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if (mca_btl_ugni_component.progress_thread_enabled) {
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mmap_start_addr = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1, 0);
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if (NULL == mmap_start_addr) {
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BTL_ERROR(("btl/ugni mmap returned error"));
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return OPAL_ERR_OUT_OF_RESOURCE;
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}
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rc = GNI_MemRegister(ugni_module->devices[0].dev_handle,
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(unsigned long)mmap_start_addr,
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4096,
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ugni_module->smsg_remote_irq_cq,
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GNI_MEM_READWRITE,
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-1,
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&ugni_module->devices[0].smsg_irq_mhndl);
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mca_btl_ugni_spawn_progress_thread(btl);
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}
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opal_event_evtimer_add (&ugni_module->connection_event, (&(struct timeval) {.tv_sec = 0, .tv_usec = MCA_BTL_UGNI_CONNECT_USEC}));
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ugni_module->initialized = true;
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}
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return OPAL_SUCCESS;
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}
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int mca_btl_ugni_del_procs (struct mca_btl_base_module_t *btl,
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size_t nprocs, struct opal_proc_t **procs,
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struct mca_btl_base_endpoint_t **peers) {
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mca_btl_ugni_module_t *ugni_module = (mca_btl_ugni_module_t *) btl;
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OPAL_THREAD_LOCK(&ugni_module->endpoint_lock);
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for (size_t i = 0 ; i < nprocs ; ++i) {
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struct opal_proc_t *opal_proc = procs[i];
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uint64_t proc_id = mca_btl_ugni_proc_name_to_id(opal_proc->proc_name);
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mca_btl_base_endpoint_t *ep = NULL;
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/* lookup this proc in the hash table */
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(void) opal_hash_table_get_value_uint64 (&ugni_module->id_to_endpoint, proc_id, (void **) &ep);
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BTL_VERBOSE(("deleting endpoint with proc id 0x%" PRIx64 ", ptr: %p", proc_id, (void *) ep));
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if (NULL != ep) {
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mca_btl_ugni_release_ep (ep);
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--ugni_module->endpoint_count;
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}
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if (OPAL_PROC_ON_LOCAL_NODE(opal_proc->proc_flags)) {
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--ugni_module->nlocal_procs;
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}
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/* remote the endpoint from the hash table */
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opal_hash_table_set_value_uint64 (&ugni_module->id_to_endpoint, proc_id, NULL);
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}
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OPAL_THREAD_UNLOCK(&ugni_module->endpoint_lock);
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mca_btl_ugni_module_set_max_reg (ugni_module, ugni_module->nlocal_procs);
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return OPAL_SUCCESS;
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}
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struct mca_btl_base_endpoint_t *mca_btl_ugni_get_ep (struct mca_btl_base_module_t *module, opal_proc_t *proc)
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{
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mca_btl_ugni_module_t *ugni_module = (mca_btl_ugni_module_t *) module;
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uint64_t proc_id = mca_btl_ugni_proc_name_to_id(proc->proc_name);
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mca_btl_base_endpoint_t *ep;
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int rc;
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OPAL_THREAD_LOCK(&ugni_module->endpoint_lock);
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do {
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rc = opal_hash_table_get_value_uint64 (&ugni_module->id_to_endpoint, proc_id, (void **) &ep);
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if (OPAL_SUCCESS == rc) {
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BTL_VERBOSE(("returning existing endpoint for proc %s", OPAL_NAME_PRINT(proc->proc_name)));
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break;
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}
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BTL_VERBOSE(("initialized uGNI endpoint for proc id: 0x%" PRIx64 " ptr: %p", proc_id, (void *) proc));
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/* Create and Init endpoints */
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rc = mca_btl_ugni_init_ep (ugni_module, &ep, ugni_module, proc);
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if (OPAL_UNLIKELY(OPAL_SUCCESS != rc)) {
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BTL_ERROR(("btl/ugni error initializing endpoint"));
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break;
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}
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/* ugni is allowed on local processes to provide support for network atomic operations */
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if (OPAL_PROC_ON_LOCAL_NODE(proc->proc_flags)) {
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++ugni_module->nlocal_procs;
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}
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++ugni_module->endpoint_count;
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/* add this endpoint to the connection lookup table */
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opal_hash_table_set_value_uint64 (&ugni_module->id_to_endpoint, proc_id, ep);
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} while (0);
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OPAL_THREAD_UNLOCK(&ugni_module->endpoint_lock);
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return ep;
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}
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static int ugni_reg_mem (void *reg_data, void *base, size_t size,
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mca_rcache_base_registration_t *reg)
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{
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mca_btl_ugni_module_t *ugni_module = (mca_btl_ugni_module_t *) reg_data;
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gni_cq_handle_t cq = 0;
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int flags, rc;
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if (ugni_module->reg_count >= ugni_module->reg_max) {
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return OPAL_ERR_OUT_OF_RESOURCE;
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}
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if (reg->access_flags & (MCA_RCACHE_ACCESS_REMOTE_WRITE | MCA_RCACHE_ACCESS_LOCAL_WRITE |
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MCA_RCACHE_ACCESS_REMOTE_ATOMIC)) {
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flags = GNI_MEM_READWRITE;
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} else {
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flags = GNI_MEM_READ_ONLY;
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}
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if (!(reg->flags & MCA_RCACHE_FLAGS_SO_MEM)) {
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flags |= GNI_MEM_RELAXED_PI_ORDERING;
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}
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if (reg->flags & MCA_RCACHE_FLAGS_RESV0) {
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cq = ugni_module->smsg_remote_cq;
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}
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rc = mca_btl_ugni_reg_mem (ugni_module, base, size, (mca_btl_ugni_reg_t *) reg, cq, flags);
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if (OPAL_LIKELY(OPAL_SUCCESS == rc)) {
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opal_atomic_add_32(&ugni_module->reg_count,1);
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}
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return rc;
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}
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static int
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ugni_dereg_mem (void *reg_data, mca_rcache_base_registration_t *reg)
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{
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mca_btl_ugni_module_t *ugni_module = (mca_btl_ugni_module_t *) reg_data;
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int rc;
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rc = mca_btl_ugni_dereg_mem (ugni_module, (mca_btl_ugni_reg_t *) reg);
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if (OPAL_LIKELY(OPAL_SUCCESS == rc)) {
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opal_atomic_add_32(&ugni_module->reg_count,-1);
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}
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return rc;
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}
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static int
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mca_btl_ugni_setup_mpools (mca_btl_ugni_module_t *ugni_module)
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{
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mca_rcache_udreg_resources_t rcache_resources;
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unsigned int mbox_increment;
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uint32_t nprocs, *u32;
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char *rcache_name;
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int rc;
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rc = opal_pointer_array_init (&ugni_module->pending_smsg_frags_bb, 0,
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1 << 30, 32768);
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if (OPAL_SUCCESS != rc) {
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return rc;
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}
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/* determine how many procs are in the job (might want to check universe size here) */
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u32 = &nprocs;
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OPAL_MODEX_RECV_VALUE(rc, OPAL_PMIX_UNIV_SIZE, &OPAL_PROC_MY_NAME,
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&u32, OPAL_UINT32);
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if (OPAL_SUCCESS != rc) {
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/* take a wild conservative guess */
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nprocs = 512;
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}
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rc = mca_btl_ugni_smsg_setup (nprocs);
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if (OPAL_UNLIKELY(OPAL_SUCCESS != rc)) {
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BTL_ERROR(("error setting up smsg"));
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return rc;
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}
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rc = opal_free_list_init (ugni_module->frags_lists + MCA_BTL_UGNI_LIST_SMSG,
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sizeof (mca_btl_ugni_smsg_frag_t),
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opal_cache_line_size, OBJ_CLASS(mca_btl_ugni_smsg_frag_t),
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mca_btl_ugni_component.ugni_smsg_limit,
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opal_cache_line_size,
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mca_btl_ugni_component.ugni_free_list_num,
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mca_btl_ugni_component.ugni_free_list_max,
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mca_btl_ugni_component.ugni_free_list_inc,
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NULL, 0, NULL, (opal_free_list_item_init_fn_t) mca_btl_ugni_frag_init,
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(void *) (intptr_t) MCA_BTL_UGNI_LIST_SMSG);
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if (OPAL_UNLIKELY(OPAL_SUCCESS != rc)) {
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BTL_ERROR(("error creating smsg fragment free list"));
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return rc;
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}
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rc = opal_free_list_init (ugni_module->frags_lists + MCA_BTL_UGNI_LIST_RDMA,
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sizeof (mca_btl_ugni_rdma_frag_t), 64,
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OBJ_CLASS(mca_btl_ugni_rdma_frag_t),
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0, opal_cache_line_size,
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mca_btl_ugni_component.ugni_free_list_num,
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mca_btl_ugni_component.ugni_free_list_max,
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mca_btl_ugni_component.ugni_free_list_inc,
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NULL, 0, NULL, (opal_free_list_item_init_fn_t) mca_btl_ugni_frag_init,
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(void *) (intptr_t) MCA_BTL_UGNI_LIST_RDMA);
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if (OPAL_UNLIKELY(OPAL_SUCCESS != rc)) {
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return rc;
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}
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rc = opal_free_list_init (ugni_module->frags_lists + MCA_BTL_UGNI_LIST_RDMA_INT,
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sizeof (mca_btl_ugni_rdma_frag_t), 8,
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OBJ_CLASS(mca_btl_ugni_rdma_frag_t),
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0, opal_cache_line_size, 0, -1, 64,
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NULL, 0, NULL, (opal_free_list_item_init_fn_t) mca_btl_ugni_frag_init,
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(void *) (intptr_t) MCA_BTL_UGNI_LIST_RDMA_INT);
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if (OPAL_UNLIKELY(OPAL_SUCCESS != rc)) {
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return rc;
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}
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ugni_module->super.btl_mpool = mca_mpool_base_module_lookup (mca_btl_ugni_component.mpool_hints);
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if (NULL == ugni_module->super.btl_mpool) {
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BTL_ERROR(("could not find mpool matching hints %s", mca_btl_ugni_component.mpool_hints));
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return OPAL_ERROR;
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}
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rcache_resources.base.cache_name = "ompi.ugni";
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rcache_resources.base.reg_data = (void *) ugni_module;
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rcache_resources.base.sizeof_reg = sizeof (mca_btl_ugni_reg_t);
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rcache_resources.base.register_mem = ugni_reg_mem;
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rcache_resources.base.deregister_mem = ugni_dereg_mem;
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if (MCA_BTL_UGNI_RCACHE_UDREG == mca_btl_ugni_component.rcache_type) {
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/* additional settings for the udreg mpool */
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/* 4k should be large enough for any Gemini/Ares system */
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rcache_resources.max_entries = 4096;
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rcache_resources.use_kernel_cache = true;
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rcache_resources.use_evict_w_unreg = false;
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rcache_name = "udreg";
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} else {
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rcache_name = "grdma";
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}
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ugni_module->rcache =
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mca_rcache_base_module_create (rcache_name, ugni_module->devices, &rcache_resources.base);
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if (NULL == ugni_module->rcache) {
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BTL_ERROR(("error creating registration cache"));
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return OPAL_ERROR;
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}
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rc = opal_free_list_init (ugni_module->frags_lists + MCA_BTL_UGNI_LIST_EAGER_SEND,
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sizeof (mca_btl_ugni_eager_frag_t), 8,
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OBJ_CLASS(mca_btl_ugni_eager_frag_t),
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ugni_module->super.btl_eager_limit, 64,
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mca_btl_ugni_component.ugni_eager_num,
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mca_btl_ugni_component.ugni_eager_max,
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mca_btl_ugni_component.ugni_eager_inc,
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ugni_module->super.btl_mpool, 0, ugni_module->rcache,
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(opal_free_list_item_init_fn_t) mca_btl_ugni_frag_init,
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(void *) (intptr_t) MCA_BTL_UGNI_LIST_EAGER_SEND);
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if (OPAL_UNLIKELY(OPAL_SUCCESS != rc)) {
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BTL_ERROR(("error creating eager send fragment free list"));
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return rc;
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}
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rc = opal_free_list_init (ugni_module->frags_lists + MCA_BTL_UGNI_LIST_EAGER_RECV,
|
|
sizeof (mca_btl_ugni_eager_frag_t), 8,
|
|
OBJ_CLASS(mca_btl_ugni_eager_frag_t),
|
|
ugni_module->super.btl_eager_limit, 64,
|
|
mca_btl_ugni_component.ugni_eager_num,
|
|
mca_btl_ugni_component.ugni_eager_max,
|
|
mca_btl_ugni_component.ugni_eager_inc,
|
|
ugni_module->super.btl_mpool, 0, ugni_module->rcache,
|
|
(opal_free_list_item_init_fn_t) mca_btl_ugni_frag_init,
|
|
(void *) (intptr_t) MCA_BTL_UGNI_LIST_EAGER_RECV);
|
|
if (OPAL_UNLIKELY(OPAL_SUCCESS != rc)) {
|
|
BTL_ERROR(("error creating eager receive fragment free list"));
|
|
return rc;
|
|
}
|
|
|
|
if (0 == mca_btl_ugni_component.mbox_increment) {
|
|
/* limit mailbox allocations to either 12.5% of available registrations
|
|
or 2MiB per allocation */
|
|
mbox_increment = (unsigned int) (2097152.0 / (float)mca_btl_ugni_component.smsg_mbox_size);
|
|
|
|
/* we may end up using more */
|
|
if (nprocs/mbox_increment > (unsigned int) ugni_module->reg_max / 8) {
|
|
mbox_increment = nprocs / (ugni_module->reg_max >> 3);
|
|
}
|
|
} else {
|
|
mbox_increment = mca_btl_ugni_component.mbox_increment;
|
|
}
|
|
|
|
/* use the MCA_RCACHE_FLAGS_RESV0 to signal this is smsg memory */
|
|
rc = opal_free_list_init (&ugni_module->smsg_mboxes,
|
|
sizeof (mca_btl_ugni_smsg_mbox_t), 8,
|
|
OBJ_CLASS(mca_btl_ugni_smsg_mbox_t),
|
|
mca_btl_ugni_component.smsg_mbox_size, 128,
|
|
32, -1, mbox_increment, ugni_module->super.btl_mpool,
|
|
MCA_RCACHE_FLAGS_SO_MEM | MCA_RCACHE_FLAGS_RESV0,
|
|
ugni_module->rcache, NULL, NULL);
|
|
if (OPAL_UNLIKELY(OPAL_SUCCESS != rc)) {
|
|
BTL_ERROR(("error creating smsg mailbox free list"));
|
|
return rc;
|
|
}
|
|
|
|
rc = opal_free_list_init (&ugni_module->post_descriptors,
|
|
sizeof (mca_btl_ugni_post_descriptor_t),
|
|
8, OBJ_CLASS(mca_btl_ugni_post_descriptor_t),
|
|
0, 0, 0, -1, 256, NULL, 0, NULL, NULL, NULL);
|
|
if (OPAL_UNLIKELY(OPAL_SUCCESS != rc)) {
|
|
BTL_ERROR(("error creating post descriptor free list"));
|
|
return rc;
|
|
}
|
|
|
|
return OPAL_SUCCESS;
|
|
}
|
|
|
|
static void
|
|
mca_btl_ugni_module_set_max_reg (mca_btl_ugni_module_t *ugni_module, int nlocal_procs)
|
|
{
|
|
if (0 == mca_btl_ugni_component.max_mem_reg) {
|
|
#if defined(HAVE_GNI_GETJOBRESINFO)
|
|
gni_job_res_desc_t res_des;
|
|
gni_return_t grc;
|
|
int fuzz = 20;
|
|
|
|
grc = GNI_GetJobResInfo (0, mca_btl_ugni_component.ptag,
|
|
GNI_JOB_RES_MDD, &res_des);
|
|
if (GNI_RC_SUCCESS == grc) {
|
|
if (nlocal_procs) {
|
|
ugni_module->reg_max = (res_des.limit - fuzz) / nlocal_procs;
|
|
} else {
|
|
ugni_module->reg_max = 0;
|
|
}
|
|
}
|
|
#else
|
|
/* no way to determine the maximum registration count */
|
|
if (nlocal_procs) {
|
|
ugni_module->reg_max = 1200 / nlocal_procs;
|
|
} else {
|
|
ugni_module->reg_max = 0;
|
|
}
|
|
#endif
|
|
} else if (-1 == mca_btl_ugni_component.max_mem_reg) {
|
|
ugni_module->reg_max = INT_MAX;
|
|
} else {
|
|
ugni_module->reg_max = mca_btl_ugni_component.max_mem_reg;
|
|
}
|
|
|
|
ugni_module->reg_count = 0;
|
|
}
|
|
|
|
static int mca_btl_ugni_smsg_setup (int nprocs)
|
|
{
|
|
gni_smsg_attr_t tmp_smsg_attrib;
|
|
unsigned int mbox_size;
|
|
gni_return_t grc;
|
|
|
|
if (0 == mca_btl_ugni_component.ugni_smsg_limit) {
|
|
/* auto-set the smsg limit based on the number of ranks */
|
|
if (nprocs <= 512) {
|
|
mca_btl_ugni_component.ugni_smsg_limit = 8192;
|
|
} else if (nprocs <= 1024) {
|
|
mca_btl_ugni_component.ugni_smsg_limit = 2048;
|
|
} else if (nprocs <= 8192) {
|
|
mca_btl_ugni_component.ugni_smsg_limit = 1024;
|
|
} else if (nprocs <= 16384) {
|
|
mca_btl_ugni_component.ugni_smsg_limit = 512;
|
|
} else {
|
|
mca_btl_ugni_component.ugni_smsg_limit = 256;
|
|
}
|
|
}
|
|
|
|
mca_btl_ugni_component.smsg_max_data = mca_btl_ugni_component.ugni_smsg_limit -
|
|
sizeof (mca_btl_ugni_send_frag_hdr_t);
|
|
|
|
if (mca_btl_ugni_component.ugni_smsg_limit == mca_btl_ugni_module.super.btl_eager_limit) {
|
|
mca_btl_ugni_module.super.btl_eager_limit = mca_btl_ugni_component.smsg_max_data;
|
|
}
|
|
|
|
/* calculate mailbox size */
|
|
tmp_smsg_attrib.msg_type = GNI_SMSG_TYPE_MBOX_AUTO_RETRANSMIT;
|
|
tmp_smsg_attrib.msg_maxsize = mca_btl_ugni_component.ugni_smsg_limit;
|
|
tmp_smsg_attrib.mbox_maxcredit = mca_btl_ugni_component.smsg_max_credits;
|
|
|
|
grc = GNI_SmsgBufferSizeNeeded (&tmp_smsg_attrib, &mbox_size);
|
|
if (OPAL_UNLIKELY(GNI_RC_SUCCESS != grc)) {
|
|
BTL_ERROR(("error in GNI_SmsgBufferSizeNeeded"));
|
|
return mca_btl_rc_ugni_to_opal (grc);
|
|
}
|
|
|
|
mca_btl_ugni_component.smsg_mbox_size = OPAL_ALIGN(mbox_size, 64, unsigned int);
|
|
|
|
return OPAL_SUCCESS;
|
|
}
|