3903009b8b
protocol over the MX BTL. Now, we have only one matching, the one in Open MPI. The problem is that when the unexpected handler is triggered, not all the message is on the host memory. In the best case we get one MX fragment (internal MX fragment), in the worst we get NULL. The only way to fit this with the design of the PML is to force the eager protocol at the MX internal fragment size, and to limit the send/receive protocol at the same size. Tests show the outcome is not far from optimal (if the pipeline depth is increased a little bit). Set MX_PIPELINE_LOG in order to allow MX to use internal fragments of 4K. This commit was SVN r12930.
83 строки
2.4 KiB
C
83 строки
2.4 KiB
C
/*
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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) 2004-2006 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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* $COPYRIGHT$
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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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#ifndef MCA_BTL_MX_ENDPOINT_H
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#define MCA_BTL_MX_ENDPOINT_H
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#include "opal/class/opal_list.h"
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#include "opal/event/event.h"
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#include "ompi/mca/pml/pml.h"
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#include "ompi/mca/btl/btl.h"
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#include "btl_mx_frag.h"
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#include "btl_mx.h"
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#include <myriexpress.h>
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#if defined(c_plusplus) || defined(__cplusplus)
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extern "C" {
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#endif
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#define MCA_BTL_MX_NOT_CONNECTED 0x0000
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#define MCA_BTL_MX_NOT_REACHEABLE 0x0001
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#define MCA_BTL_MX_CONNECTION_PENDING 0x0002
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#define MCA_BTL_MX_CONNECTED 0x0004
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/**
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* Structure used to publish MX information to peers
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*/
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struct mca_btl_mx_addr_t {
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uint64_t nic_id;
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uint32_t endpoint_id;
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};
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typedef struct mca_btl_mx_addr_t mca_btl_mx_addr_t;
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/**
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* An abstraction that represents a connection to a endpoint process.
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* An instance of mca_btl_base_endpoint_t is associated w/ each process
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* and BTL pair at startup. However, connections to the endpoint
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* are established dynamically on an as-needed basis:
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*/
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struct mca_btl_base_endpoint_t {
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opal_list_item_t super;
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struct mca_btl_mx_module_t* endpoint_btl;
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/**< BTL instance that created this connection */
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struct mca_btl_mx_proc_t* endpoint_proc;
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/**< proc structure corresponding to endpoint */
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struct mca_btl_mx_addr_t mx_peer;
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/** the address as reported by the peer */
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mx_endpoint_addr_t mx_peer_addr;
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/** the remote MX endpoint address */
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int status; /**< status of the endpoint */
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};
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typedef struct mca_btl_base_endpoint_t mca_btl_base_endpoint_t;
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typedef mca_btl_base_endpoint_t mca_btl_mx_endpoint_t;
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OBJ_CLASS_DECLARATION(mca_btl_mx_endpoint_t);
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#if defined(c_plusplus) || defined(__cplusplus)
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}
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#endif
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#endif
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