.\" $Id: barrierd.1,v 1.5 2000/02/20 19:05:15 garbled Exp $
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.\" The following requests are required for all man pages.
.Dd October 14, 1998
.Dt BARRIERD 1
.Sh NAME
.Nm barrierd
.Nd syncronize a process on a number of machines.
.Sh SYNOPSIS
.Nm
.Op Fl p Ar port
.Sh DESCRIPTION
The 
.Nm
daemon runs on a host, and accepts barrier connections from the client
program barrier.  It handles the connections and syncronization of 
various barriers being set up and taken down across the cluster.
.Bl -tag -width www
.It Fl p
Specifies a port number for the
.Nm
daemon to listen on.  Defaults
to 1933, and overrides the
.Ev BARRIER_PORT
environment variable.
.El
.Sh ENVIRONMENT
.Nm
utilizes the following environment variables:
.Bl -tag -width "BARRIER_PORT"
.It Ev BARRIER_HOST
Sets the default remote host to connect to.
.El
.\" .Sh FILES
.Sh DIAGNOSTICS
Exit status is 0 on success, 1 if an error occurs.
.Sh SEE ALSO
.Xr barrier 1 ,
.Xr dsh 1 ,
.Sh HISTORY
The
.Nm
command appeared in clusterit 1.1. 
.Sh AUTHOR
.Nm Barrierd
was written by Tim Rightnour.
.Sh BUGS
.Nm Barrierd
can only handle up to 10 unique barrier tokens at any one
time.  In addition, it can only handle a barrier size of up to 512
nodes.  These values can be modified by recompiling the program.