a14e0f10d4
mca_btl_base_segment_t and replace them with des_local and des_remote This change also updates the BTL version to 3.0.0. This commit does not represent the final version of BTL 3.0.0. More changes are coming. In making this change I updated all of the BTLs as well as BTL user's to use the new structure members. Please evaluate your component to ensure the changes are correct. RFC text: This is the first of several BTL interface changes I am proposing for the 1.9/2.0 release series. What: Change naming of btl descriptor members. I propose we change des_src and des_dst (and their associated counts) to be des_local and des_remote. For receive callbacks the des_local member will be used to communicate the segment information to the callback. The proposed change will include updating all of the doxygen in btl.h as well as updating all BTLs and BTL users to use the new naming scheme. Why: My btl usage makes use of both put and get operations on the same descriptor. With the current naming scheme I need to ensure that there is consistency beteen the segments described in des_src and des_dst depending on whether a put or get operation is executed. Additionally, the current naming prevents BTLs that do not require prepare/RMA matched operations (do not set MCA_BTL_FLAGS_RDMA_MATCHED) from executing multiple simultaneous put AND get operations. At the moment the descriptor can only be used with one or the other. The naming change makes it easier for BTL users to setup/modify descriptors for RMA operations as the local segment and remote segment are always in the same member field. The only issue I forsee with this change is that it will require a little more work to move BTL fixes to the 1.8 release series. This commit was SVN r32196.
116 строки
4.6 KiB
C
116 строки
4.6 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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/*
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* Copyright (c) 2011-2012 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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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_gni_post_desc (mca_btl_ugni_base_frag_t *frag,
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gni_post_type_t op_type,
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uint64_t lcl_addr,
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gni_mem_handle_t lcl_mdh,
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uint64_t rem_addr,
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gni_mem_handle_t rem_mdh,
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uint64_t bufsize,
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gni_cq_handle_t cq_hndl) {
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frag->post_desc.base.type = op_type;
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frag->post_desc.base.cq_mode = GNI_CQMODE_GLOBAL_EVENT;
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frag->post_desc.base.dlvr_mode = GNI_DLVMODE_PERFORMANCE;
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frag->post_desc.base.local_addr = (uint64_t) lcl_addr;
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frag->post_desc.base.local_mem_hndl = lcl_mdh;
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frag->post_desc.base.remote_addr = (uint64_t) rem_addr;
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frag->post_desc.base.remote_mem_hndl = rem_mdh;
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frag->post_desc.base.length = bufsize;
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frag->post_desc.base.rdma_mode = 0;
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frag->post_desc.base.src_cq_hndl = cq_hndl;
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frag->post_desc.tries = 0;
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}
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static inline int mca_btl_ugni_post_fma (mca_btl_ugni_base_frag_t *frag, gni_post_type_t op_type,
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mca_btl_ugni_segment_t *lcl_seg, mca_btl_ugni_segment_t *rem_seg)
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{
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gni_return_t rc;
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/* Post descriptor (CQ is ignored for FMA transactions) */
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init_gni_post_desc (frag, op_type, lcl_seg->base.seg_addr.lval, lcl_seg->memory_handle,
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rem_seg->base.seg_addr.lval, rem_seg->memory_handle, lcl_seg->base.seg_len, 0);
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rc = GNI_PostFma (frag->endpoint->rdma_ep_handle, &frag->post_desc.base);
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if (GNI_RC_SUCCESS != rc) {
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BTL_VERBOSE(("GNI_PostFma failed with gni rc: %d", rc));
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return OMPI_ERR_OUT_OF_RESOURCE;
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}
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return OMPI_SUCCESS;
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}
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static inline int mca_btl_ugni_post_bte (mca_btl_ugni_base_frag_t *frag, gni_post_type_t op_type,
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mca_btl_ugni_segment_t *lcl_seg, mca_btl_ugni_segment_t *rem_seg)
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{
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gni_return_t rc;
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/* Post descriptor */
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init_gni_post_desc (frag, op_type, lcl_seg->base.seg_addr.lval, lcl_seg->memory_handle,
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rem_seg->base.seg_addr.lval, rem_seg->memory_handle, lcl_seg->base.seg_len,
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frag->endpoint->btl->rdma_local_cq);
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rc = GNI_PostRdma (frag->endpoint->rdma_ep_handle, &frag->post_desc.base);
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if (GNI_RC_SUCCESS != rc) {
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BTL_VERBOSE(("GNI_PostRdma failed with gni rc: %d", rc));
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return OMPI_ERR_OUT_OF_RESOURCE;
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}
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return OMPI_SUCCESS;
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}
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static inline int mca_btl_ugni_post_wcb (mca_btl_ugni_base_frag_t *frag, bool get, mca_btl_ugni_segment_t *lcl_seg,
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mca_btl_ugni_segment_t *rem_seg, frag_cb_t cb) {
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frag->cbfunc = cb;
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if (frag->base.des_local->seg_len <= mca_btl_ugni_component.ugni_fma_limit) {
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return mca_btl_ugni_post_fma (frag, get ? GNI_POST_FMA_GET : GNI_POST_FMA_PUT, lcl_seg, rem_seg);
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}
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return mca_btl_ugni_post_bte (frag, get ? GNI_POST_RDMA_GET : GNI_POST_RDMA_PUT, lcl_seg, rem_seg);
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}
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static inline int mca_btl_ugni_post (mca_btl_ugni_base_frag_t *frag, bool get, mca_btl_ugni_segment_t *lcl_seg,
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mca_btl_ugni_segment_t *rem_seg) {
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return mca_btl_ugni_post_wcb (frag, get, lcl_seg, rem_seg, mca_btl_ugni_frag_complete);
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}
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static inline void mca_btl_ugni_repost (mca_btl_ugni_base_frag_t *frag, int rc) {
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gni_return_t grc;
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frag->cbfunc = mca_btl_ugni_frag_complete;
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if (GNI_POST_RDMA_PUT == frag->post_desc.base.type ||
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GNI_POST_RDMA_GET == frag->post_desc.base.type) {
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grc = GNI_PostRdma (frag->endpoint->rdma_ep_handle, &frag->post_desc.base);
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} else {
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grc = GNI_PostFma (frag->endpoint->rdma_ep_handle, &frag->post_desc.base);
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}
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if (OPAL_UNLIKELY(GNI_RC_SUCCESS != grc)) {
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frag->cbfunc = mca_btl_ugni_repost;
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opal_list_append (&frag->endpoint->btl->failed_frags, (opal_list_item_t *) frag);
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}
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}
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#endif /* MCA_BTL_UGNI_RDMA_H */
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