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<span id="Cluster-execution"></span><div class="header">
<p>
Next: <a href="Further-functions.html" accesskey="n" rel="next">Further functions</a>, Previous: <a href="Local-execution.html" accesskey="p" rel="prev">Local execution</a>, Up: <a href="index.html" accesskey="u" rel="up">Top</a> [<a href="Function-index.html" title="Index" rel="index">Index</a>]</p>
</div>
<hr>
<span id="Functions-for-parallel-execution-over-a-cluster-of-machines"></span><h2 class="chapter">3 Functions for parallel execution over a cluster of machines</h2>
<span id="index-cluster-execution"></span>
<p>There are high level functions, similar to <a href="parcellfun.html">parcellfun</a> and
<a href="pararrayfun.html">pararrayfun</a>, which only require the user to provide a function to
be called and a series of argument sets. Parallel function calls are
then internally distributed over the cluster, and over the local
processors (or processor cores) within the single machines of the
cluster.
</p>
<p>Medium and low level functions are also provided. These require the user
to program the scheduling of parallel execution.
</p>
<p>Data transfer is possible between the client machine and each server
machine, but also directly between server machines. The latter feature
is exploited e.g. by the <a href="install_005fvars.html">install_vars</a> function.
</p>
<p>For limitations, see <a href="Limitations.html">Limitations</a>.
</p>
<table class="menu" border="0" cellspacing="0">
<tr><td align="left" valign="top">• <a href="Security.html" accesskey="1">Security</a></td><td> </td><td align="left" valign="top">Security considerations.
</td></tr>
<tr><td align="left" valign="top">• <a href="Authentication.html" accesskey="2">Authentication</a></td><td> </td><td align="left" valign="top">Generating authentication keys.
</td></tr>
<tr><td align="left" valign="top">• <a href="pserver.html" accesskey="3">pserver</a></td><td> </td><td align="left" valign="top">Starting servers.
</td></tr>
<tr><th colspan="3" align="left" valign="top"><pre class="menu-comment">
Connection-related functions
</pre></th></tr><tr><td align="left" valign="top">• <a href="pconnect.html" accesskey="4">pconnect</a></td><td> </td><td align="left" valign="top">Establishing cluster connections.
</td></tr>
<tr><td align="left" valign="top">• <a href="sclose.html" accesskey="5">sclose</a></td><td> </td><td align="left" valign="top">Closing cluster connections.
</td></tr>
<tr><td align="left" valign="top">• <a href="network_005fget_005finfo.html" accesskey="6">network_get_info</a></td><td> </td><td align="left" valign="top">Get network information.
</td></tr>
<tr><td align="left" valign="top">• <a href="network_005fset.html" accesskey="7">network_set</a></td><td> </td><td align="left" valign="top">Set network properties.
</td></tr>
<tr><th colspan="3" align="left" valign="top"><pre class="menu-comment">
High level functions
</pre></th></tr><tr><td align="left" valign="top">• <a href="netcellfun.html" accesskey="8">netcellfun</a></td><td> </td><td align="left" valign="top">Function netcellfun.
</td></tr>
<tr><td align="left" valign="top">• <a href="netarrayfun.html" accesskey="9">netarrayfun</a></td><td> </td><td align="left" valign="top">Function netarrayfun.
</td></tr>
<tr><td align="left" valign="top">• <a href="install_005fvars.html">install_vars</a></td><td> </td><td align="left" valign="top">Distribute Octave variables.
</td></tr>
<tr><th colspan="3" align="left" valign="top"><pre class="menu-comment">
Medium level functions
</pre></th></tr><tr><td align="left" valign="top">• <a href="rfeval.html">rfeval</a></td><td> </td><td align="left" valign="top">Single remote function evaluation.
</td></tr>
<tr><th colspan="3" align="left" valign="top"><pre class="menu-comment">
Low level functions
</pre></th></tr><tr><td align="left" valign="top">• <a href="psend.html">psend</a></td><td> </td><td align="left" valign="top">Sending Octave variables.
</td></tr>
<tr><td align="left" valign="top">• <a href="precv.html">precv</a></td><td> </td><td align="left" valign="top">Receiving Octave variables.
</td></tr>
<tr><td align="left" valign="top">• <a href="reval.html">reval</a></td><td> </td><td align="left" valign="top">Remote command evaluation.
</td></tr>
<tr><td align="left" valign="top">• <a href="select_005fsockets.html">select_sockets</a></td><td> </td><td align="left" valign="top">Call Unix <code>select</code> for data
connections.
</td></tr>
<tr><th colspan="3" align="left" valign="top"><pre class="menu-comment">
</pre></th></tr><tr><td align="left" valign="top">• <a href="Example.html">Example</a></td><td> </td><td align="left" valign="top">Example
</td></tr>
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Next: <a href="Further-functions.html" accesskey="n" rel="next">Further functions</a>, Previous: <a href="Local-execution.html" accesskey="p" rel="prev">Local execution</a>, Up: <a href="index.html" accesskey="u" rel="up">Top</a> [<a href="Function-index.html" title="Index" rel="index">Index</a>]</p>
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