58 строки
2.3 KiB
C
58 строки
2.3 KiB
C
/*
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* Copyright (c) 2010-2011, Siberian State University of Telecommunications
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* and Information Sciences. All rights reserved.
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* Copyright (c) 2010-2011, A.V. Rzhanov Institute of Semiconductor Physics SB RAS.
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* All rights reserved.
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*
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* mpigclock.h: MPI clock synchronization.
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* http://mpiperf.cpct.sibsutis.ru/index.php
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*
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* Copyright (C) 2011 Mikhail Kurnosov <mkurnosov@gmail.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* Neither the name of the the copyright holders nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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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 MPIGCLOCK_H
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#define MPIGCLOCK_H
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#include <stdio.h>
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#include "hpctimer.h"
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#define INVALIDTIME -1.0
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#define MPIGCLOCK_RTTMIN_NOTCHANGED_MAX 100
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#define MPIGCLOCK_MSGTAG 128
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/* mpigclock_measure_offset_adaptive: Measures clock's offset of peer. */
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double mpigclock_sync_linear(MPI_Comm comm, int root, double *rtt);
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double mpigclock_sync_log(MPI_Comm comm, int root, double *rtt);
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#endif
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