13643f5b6e
This commit makes the folowing changes: - Add support for the knem single-copy mechanism. Initially vader will only support the synchronous copy mode. Asynchronous copy support may be added int the future. - Improve Linux cross memory attach (CMA) when using restrictive ptrace settings. This will allow Open MPI to use CMA without modifying the system settings to support ptrace attach (see /etc/sysctl.d/10-ptrace.conf). - Allow runtime selection of the single copy mechanism. The default behavior is to use the best available. The priority list of single-copy mehanisms is as follows: xpmem, cma, and knem. - Allow disabling support for kernel-assisted single copy. - Some tuning and bug fixes.
27 строки
572 B
C
27 строки
572 B
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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/*
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* Copyright (c) 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(BTL_VADER_KNEM_H)
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#define BTL_VADER_KNEM_H
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#if OPAL_BTL_VADER_HAVE_KNEM
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#include <knem_io.h>
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#include <sys/mman.h>
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int mca_btl_vader_knem_init (void);
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int mca_btl_vader_knem_fini (void);
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int mca_btl_vader_knem_progress (void);
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#endif /* OPAL_BTL_VADER_HAVE_KNEM */
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#endif /* defined(BTL_VADER_KNEM_H) */
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