.\" Copyright (c) 2014      Artem Polyakov <artpol84@gmail.com>.  All rights reserved.
.TH MPISYNC 1 "#OMPI_DATE#" "#PACKAGE_VERSION#" "#PACKAGE_NAME#"
.SH NAME
Open MPI timing tools
.
.SH SYNTAX
.B mpisync
[\fIoptions\fR]
.br
.B mpirun_prof
[\fIoptions\fR]
.br
.B ompi_timing_post
[\fI<timing-file>\fR] [\fI<processed-file>\fR]
.
.SH DESCRIPTION
.PP
.BR mpisync
determines clock offsets relative to Head Node Process (HNP). It accepts the following options:
.TP
\fB\-o\fR, \fB\-\-output\fR
The name of output file where offsets related to HNP will be written
.TP
\fB\-h\fR, \fB\-\-help\fR
Print help information
.PP
.BR 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
.BR first
:
.BR previous
event.
.PP
.BR mpirun_prof
is a wrapper around
.BR mpirun
that performs clock synchronisation and post-processing of the timing output file.

.SH NOTES
.PP
The mpisync code was derived from MPIPerf project:
http://mpiperf.cpct.sibsutis.ru/index.php/Main/Documentation
.
.SH FILES
.PP
The output file has following format:
.PP
<hostname> <round-trip-time> <offset-from-hnp>