Sophie: clusterit-2.4-5mdv2010.0 i586

clusterit-2.4-5mdv2010.0.i586.rpm

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                 October 14, 1998 BARRIER 1

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        <h3>
        NAME
        </h3>
<b>barrier</b>
- syncronize a process on a number of machines.
        <h3>
        SYNOPSIS
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<b>barrier</b>
[<b>-</b><b></b><b>q</b>]
[<b>-</b><b></b><b>v</b>]
[<b>-</b><b></b><b>h</b><i></i><i> barrier_host</i>]
[<b>-</b><b></b><b>k</b><i></i><i> key</i>]
[<b>-</b><b></b><b>p</b><i></i><i> port</i>]
<b>-</b><b></b><b>s</b><i></i><i> cluster_size</i>
        <h3>
        DESCRIPTION
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The
<b>barrier</b>
command can be used to syncronize execution of various commands.  When
a barrier is set, it is not released until all the nodes or processes
have met the barrier condition.  This can be a handy way to make sure
slower machines, perform certain tasks before doing something on
faster machines that relies on them. The following options are available:
<dl compact>
<p><dt><b>-</b><b></b><b>q</b><dd>
Turns quiet off, so barrier notifications are sent to the user.
<p><dt><b>-</b><b></b><b>v</b><dd>
Prints the version of ClusterIt to the stdout, and exits.
<p><dt><b>-</b><b></b><b>h</b><dd>
Specifies a host, which is running barrierd, to connect to for
barrier syncronization.  Overrides the
<code></code><code>BARRIER_HOST</code>
environment variable.
<p><dt><b>-</b><b></b><b>k</b><dd>
Specifies a unique key to syncronize with.  A barrier will only
synchronize with other barriers that share the same key.  Defaults to
the string 'barrier'.
<p><dt><b>-</b><b></b><b>p</b><dd>
Specifies a port number of a remote barrier daemon to connect to.  Defaults
to 1933, and overrides the
<code></code><code>BARRIER_PORT</code>
environment variable.
<p><dt><b>-</b><b></b><b>s</b><dd>
Sets the size of the cluster.  A barrier condition is met, when the number of
barrier clients connected to the remote daemon, sharing the same unique key, is
equal to this number.
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        <h3>
        ENVIRONMENT
        </h3>
<b>barrier</b>
utilizes the following environment variables.
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<p><dt><code></code><code>BARRIER_PORT</code><dd>
Sets the default remote port to connect to.
<p><dt><code></code><code>BARRIER_HOST</code><dd>
Sets the default remote host to connect to.
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        <h3>
        DIAGNOSTICS
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Exit status is 0 on successful syncronization.  Exit status will be set to 1 if
the connection is lost, or the server rejects your connection.
        <h3>
        SEE ALSO
        </h3>
<a href="barrierd.html">barrierd(1)</a>,
<a href="dsh.html">dsh(1)</a>,
        <h3>
        HISTORY
        </h3>
The
<b>barrier</b>
command appeared in clusterit 1.1.
        <h3>
        AUTHOR
        </h3>
<b>Barrier</b>
was written by Tim Rightnour.
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