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.. _man1-mpisync:
mpisync
=======
.. include_body
mpisync |mdash| Open MPI timing tools
SYNTAX
------
``mpisync [options]``
``mpirun_prof [options]``
``ompi_timing_post [<timing-file>] [<processed-file>]``
DESCRIPTION
-----------
``mpisync``: determines clock offsets relative to Head Node Process
(HNP). It accepts the following options:
* ``-o``, ``--output``: The name of output file where offsets related
to HNP will be written
* ``-h``, ``--help``: Print help information
``ompi_timing_post`` takes the timing output file as input parameter.
The events are sorted by the timestamps. Next, the timestamps are
replaced with time offsets relative to the ``first`` : ``previous``
event.
``mpirun_prof`` is a wrapper around :ref:`mpirun <man1-mpirun>` that
performs clock synchronisation and post-processing of the timing
output file.
NOTES
-----
The mpisync code was derived from MPIPerf project:
http://mpiperf.cpct.sibsutis.ru/index.php/Main/Documentation
FILES
-----
The output file has following format:
.. code::
<hostname> <round-trip-time> <offset-from-hnp>
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