12bfd13150
This is a large update that does the following: - Only allocate fast boxes for a peer if a send count threshold has been reached (default: 16). This will greatly reduce the memory usage with large numbers of local peers. - Improve performance by limiting the number of fast boxes that can be allocated per peer (default: 32). This will reduce the amount of time spent polling for fast box messages. - Provide new MCA variables to configure the size, maximum count, and send count thresholds for fast boxes allocations. - Updated buffer design to increase the range of message sizes that can be sent with a fast box. - Add thread protection around fast box allocation (locks). When spin locks are available this should be updated to use spin locks. - Various fixes and cleanup. This commit was SVN r32774.
51 строка
1.4 KiB
C
51 строка
1.4 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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/*
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* Copyright (c) 2013-2014 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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#if !defined(MCA_BTL_VADER_XPMEM_H)
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#define MCA_BTL_VADER_XPMEM_H
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#include "btl_vader.h"
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#if OPAL_BTL_VADER_HAVE_XPMEM
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/* look up the remote pointer in the peer rcache and attach if
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* necessary */
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/* largest address we can attach to using xpmem */
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#define VADER_MAX_ADDRESS ((uintptr_t)0x7ffffffff000ul)
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mca_mpool_base_registration_t *vader_get_registation (struct mca_btl_base_endpoint_t *endpoint, void *rem_ptr,
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size_t size, int flags, void **local_ptr);
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void vader_return_registration (mca_mpool_base_registration_t *reg, struct mca_btl_base_endpoint_t *endpoint);
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#else
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static inline mca_mpool_base_registration_t *vader_get_registation (struct mca_btl_base_endpoint_t *endpoint, void *rem_ptr,
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size_t size, int flags, void **local_ptr)
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{
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(void) endpoint;
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(void) rem_ptr;
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(void) size;
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(void) flags;
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(void) local_ptr;
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return NULL;
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}
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static inline void vader_return_registration (mca_mpool_base_registration_t *reg, struct mca_btl_base_endpoint_t *endpoint)
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{
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(void) reg;
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(void) endpoint;
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}
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#endif /* OPAL_BTL_VADER_HAVE_XPMEM */
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#endif
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