4079eec974
This commit updates the btl selection logic for the RDMA and RDMA pipeline protocols to use a btl iff: 1) the btl is also used for eager messages (high exclusivity), or 2) no other RDMA btl is available on an endpoint and the pml_ob1_use_all_rdma MCA variable is true. This fixes a performance regression with shared memory when an RDMA capable network is available. Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
48 строки
1.7 KiB
C
48 строки
1.7 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 2016 Los Alamos National Security, LLC. All rights
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* 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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/**
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* @file
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*/
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#ifndef MCA_PML_OB1_RDMA_H
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#define MCA_PML_OB1_RDMA_H
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struct mca_bml_base_endpoint_t;
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/*
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* Of the set of available btls that support RDMA,
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* find those that already have registrations - or
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* register if required (for leave_pinned option)
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*/
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size_t mca_pml_ob1_rdma_btls(struct mca_bml_base_endpoint_t* endpoint,
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unsigned char* base, size_t size, struct mca_pml_ob1_com_btl_t* btls);
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/* Choose RDMA BTLs to use for sending of a request by pipeline protocol.
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* Calculate number of bytes to send through each BTL according to available
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* bandwidth */
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size_t mca_pml_ob1_rdma_pipeline_btls(struct mca_bml_base_endpoint_t* endpoint,
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size_t size, mca_pml_ob1_com_btl_t* rdma_btls);
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size_t mca_pml_ob1_rdma_pipeline_btls_count (mca_bml_base_endpoint_t* bml_endpoint);
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#endif
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