150 строки
7.0 KiB
C
150 строки
7.0 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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/*
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* Copyright (c) 2011-2018 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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* $COPYRIGHT$
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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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#if !defined(MCA_BTL_UGNI_RDMA_H)
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#define MCA_BTL_UGNI_RDMA_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_device.h"
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int mca_btl_ugni_start_eager_get (mca_btl_base_endpoint_t *ep,
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mca_btl_ugni_eager_ex_frag_hdr_t hdr,
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mca_btl_ugni_base_frag_t *frag);
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static inline void init_post_desc (mca_btl_ugni_post_descriptor_t *post_desc,
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mca_btl_base_endpoint_t *endpoint, int order,
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gni_post_type_t op_type, uint64_t lcl_addr,
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gni_mem_handle_t lcl_mdh, uint64_t rem_addr,
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gni_mem_handle_t rem_mdh, uint64_t bufsize,
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gni_cq_handle_t cq_hndl, mca_btl_base_rdma_completion_fn_t cbfunc,
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void *cbcontext, void *cbdata,
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mca_btl_base_registration_handle_t *local_handle) {
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post_desc->endpoint = endpoint;
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post_desc->cbfunc = cbfunc;
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post_desc->ctx = cbcontext;
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post_desc->cbdata = cbdata;
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post_desc->local_handle = local_handle;
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post_desc->gni_desc.type = op_type;
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post_desc->gni_desc.cq_mode = GNI_CQMODE_GLOBAL_EVENT;
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if (MCA_BTL_NO_ORDER == order) {
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post_desc->gni_desc.dlvr_mode = GNI_DLVMODE_PERFORMANCE;
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} else {
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post_desc->gni_desc.dlvr_mode = GNI_DLVMODE_NO_ADAPT;
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}
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post_desc->gni_desc.local_addr = (uint64_t) lcl_addr;
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post_desc->gni_desc.local_mem_hndl = lcl_mdh;
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post_desc->gni_desc.remote_addr = (uint64_t) rem_addr;
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post_desc->gni_desc.remote_mem_hndl = rem_mdh;
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post_desc->gni_desc.length = bufsize;
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post_desc->gni_desc.rdma_mode = 0;
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post_desc->gni_desc.src_cq_hndl = cq_hndl;
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}
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__opal_attribute_always_inline__
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static inline int mca_btl_ugni_post_fma (struct mca_btl_base_endpoint_t *endpoint, gni_post_type_t op_type,
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size_t size, void *local_address, uint64_t remote_address,
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mca_btl_base_registration_handle_t *local_handle,
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mca_btl_base_registration_handle_t *remote_handle,
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int order, mca_btl_base_rdma_completion_fn_t cbfunc,
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void *cbcontext, void *cbdata)
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{
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mca_btl_ugni_post_descriptor_t post_desc;
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gni_mem_handle_t local_gni_handle = {0, 0};
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if (local_handle) {
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local_gni_handle = local_handle->gni_handle;
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}
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/* Post descriptor (CQ is ignored for FMA transactions) -- The CQ associated with the endpoint
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* is used. */
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init_post_desc (&post_desc, endpoint, order, op_type, (intptr_t) local_address, local_gni_handle,
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remote_address, remote_handle->gni_handle, size, 0, cbfunc, cbcontext, cbdata,
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local_handle);
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return mca_btl_ugni_endpoint_post_fma (endpoint, &post_desc);
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}
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static inline int mca_btl_ugni_post_bte (mca_btl_base_endpoint_t *endpoint, gni_post_type_t op_type,
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size_t size, void *local_address, uint64_t remote_address,
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mca_btl_base_registration_handle_t *local_handle,
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mca_btl_base_registration_handle_t *remote_handle,
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int order, mca_btl_base_rdma_completion_fn_t cbfunc,
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void *cbcontext, void *cbdata)
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{
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mca_btl_ugni_module_t *module = mca_btl_ugni_ep_btl (endpoint);
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mca_btl_ugni_post_descriptor_t post_desc;
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int rc;
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/* There is a performance benefit to throttling the total number of active BTE tranactions. Not sure
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* what the optimium is but the limit is inforced as a soft limit. */
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if (module->active_rdma_count >= mca_btl_ugni_component.active_rdma_threshold) {
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return OPAL_ERR_OUT_OF_RESOURCE;
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}
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(void) OPAL_THREAD_FETCH_ADD32 (&module->active_rdma_count, 1);
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/* Post descriptor */
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init_post_desc (&post_desc, endpoint, order, op_type, (intptr_t) local_address, local_handle->gni_handle,
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remote_address, remote_handle->gni_handle, size, 0, cbfunc, cbcontext, cbdata,
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local_handle);
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rc = mca_btl_ugni_endpoint_post_rdma (endpoint, &post_desc);
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if (OPAL_UNLIKELY(OPAL_SUCCESS != rc)) {
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(void) OPAL_THREAD_FETCH_ADD32 (&module->active_rdma_count, -1);
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}
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return rc;
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}
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static inline int mca_btl_ugni_post_cqwrite (mca_btl_base_endpoint_t *endpoint, mca_btl_ugni_cq_t *cq,
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gni_mem_handle_t irq_mhndl, uint64_t value,
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mca_btl_base_rdma_completion_fn_t cbfunc,
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void *cbcontext, void *cbdata)
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{
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mca_btl_ugni_post_descriptor_t post_desc;
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post_desc.gni_desc.type = GNI_POST_CQWRITE;
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post_desc.gni_desc.cqwrite_value = value; /* up to 48 bytes here, not used for now */
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post_desc.gni_desc.cq_mode = GNI_CQMODE_GLOBAL_EVENT;
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post_desc.gni_desc.dlvr_mode = GNI_DLVMODE_IN_ORDER;
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post_desc.gni_desc.src_cq_hndl = cq->gni_handle;
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post_desc.gni_desc.remote_mem_hndl = irq_mhndl;
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post_desc.cq = cq;
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return mca_btl_ugni_endpoint_post_cqwrite (endpoint, &post_desc);
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}
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__opal_attribute_always_inline__
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static inline int mca_btl_ugni_post (mca_btl_base_endpoint_t *endpoint, int get, size_t size,
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void *local_address, uint64_t remote_address,
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mca_btl_base_registration_handle_t *local_handle,
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mca_btl_base_registration_handle_t *remote_handle,
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int order, mca_btl_base_rdma_completion_fn_t cbfunc,
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void *cbcontext, void *cbdata)
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{
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const gni_post_type_t fma_ops[2] = {GNI_POST_FMA_PUT, GNI_POST_FMA_GET};
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const gni_post_type_t rdma_ops[2] = {GNI_POST_RDMA_PUT, GNI_POST_RDMA_GET};
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const size_t fma_limit = (size_t) (get ? mca_btl_ugni_component.ugni_fma_get_limit :
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mca_btl_ugni_component.ugni_fma_put_limit);
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if (size <= fma_limit) {
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return mca_btl_ugni_post_fma (endpoint, fma_ops[get], size, local_address, remote_address,
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local_handle, remote_handle, order, cbfunc, cbcontext, cbdata);
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}
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return mca_btl_ugni_post_bte (endpoint, rdma_ops[get], size, local_address, remote_address,
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local_handle, remote_handle, order, cbfunc, cbcontext, cbdata);
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}
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#endif /* MCA_BTL_UGNI_RDMA_H */
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