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Former-commit-id:a02aeb236c[formerly9f19e3f712] [formerly06a8b51d6d[formerly 64fa9254b946eae7e61bbc3f513b7c3696c4f54f]] Former-commit-id:06a8b51d6dFormer-commit-id:3360eb6c5f
307 lines
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307 lines
12 KiB
HTML
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<title>Scientific.DistributedComputing.MasterSlave.SlaveProcess</title>
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<a href="Scientific-module.html">Package Scientific</a> ::
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<a href="Scientific.DistributedComputing-module.html">Package DistributedComputing</a> ::
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<a href="Scientific.DistributedComputing.MasterSlave-module.html">Module MasterSlave</a> ::
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Class SlaveProcess
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<!-- ==================== CLASS DESCRIPTION ==================== -->
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<h1 class="epydoc">Class SlaveProcess</h1><p class="nomargin-top"></p>
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<pre class="base-tree">
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object --+
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<strong class="uidshort">SlaveProcess</strong>
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</pre>
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<hr />
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<p>Slave process in a master-slave setup</p>
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<p>A concrete slave process in a program is implemented by subclassing
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this class and adding the methods that handle the computational tasks.
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Such a method has the name "do_" followed by the tag of the
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computational task. The process is then launched by calling the method
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"start".</p>
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<!-- ==================== INSTANCE METHODS ==================== -->
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<a name="section-InstanceMethods"></a>
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<span class="table-header">Instance Methods</span></td>
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<span class="summary-type"> </span>
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<td><span class="summary-sig"><a href="Scientific.DistributedComputing.MasterSlave.SlaveProcess-class.html#__init__" class="summary-sig-name">__init__</a>(<span class="summary-sig-arg">self</span>,
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<span class="summary-sig-arg">label</span>,
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<span class="summary-sig-arg">master_host</span>=<span class="summary-sig-default">None</span>,
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<span class="summary-sig-arg">watchdog_period</span>=<span class="summary-sig-default">120.0</span>)</span><br />
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x.__init__(...) initializes x; see x.__class__.__doc__ for signature</td>
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<span class="summary-type"> </span>
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</td><td class="summary">
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<td><span class="summary-sig"><a name="processParameter"></a><span class="summary-sig-name">processParameter</span>(<span class="summary-sig-arg">self</span>,
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<span class="summary-sig-arg">parameter</span>)</span></td>
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</table>
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<tr>
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<td width="15%" align="right" valign="top" class="summary">
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<span class="summary-type"> </span>
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</td><td class="summary">
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<table width="100%" cellpadding="0" cellspacing="0" border="0">
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<tr>
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<td><span class="summary-sig"><a name="start"></a><span class="summary-sig-name">start</span>(<span class="summary-sig-arg">self</span>,
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<span class="summary-sig-arg">namespace</span>=<span class="summary-sig-default">None</span>)</span><br />
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Starts the slave process.</td>
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<td align="right" valign="top">
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</td>
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<tr>
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<td width="15%" align="right" valign="top" class="summary">
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<span class="summary-type"> </span>
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</td><td class="summary">
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<table width="100%" cellpadding="0" cellspacing="0" border="0">
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<tr>
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<td><span class="summary-sig"><a name="terminationTest"></a><span class="summary-sig-name">terminationTest</span>(<span class="summary-sig-arg">self</span>)</span></td>
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<td align="right" valign="top">
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</td>
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</tr>
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</table>
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</td>
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<tr>
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<td width="15%" align="right" valign="top" class="summary">
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<span class="summary-type"> </span>
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</td><td class="summary">
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<table width="100%" cellpadding="0" cellspacing="0" border="0">
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<tr>
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<td><span class="summary-sig"><a name="watchdogThread"></a><span class="summary-sig-name">watchdogThread</span>(<span class="summary-sig-arg">self</span>)</span><br />
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This method is run in a separate thread that pings the master process
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regularly to signal that it is still alive.</td>
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<td align="right" valign="top">
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</td>
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</table>
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</td>
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<tr>
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<td colspan="2" class="summary">
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<p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
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<code>__delattr__</code>,
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<code>__getattribute__</code>,
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<code>__hash__</code>,
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<code>__new__</code>,
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<code>__reduce__</code>,
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<code>__reduce_ex__</code>,
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<code>__repr__</code>,
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<code>__setattr__</code>,
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<code>__str__</code>
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</p>
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</table>
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<!-- ==================== PROPERTIES ==================== -->
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<span class="table-header">Properties</span></td>
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<p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
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<code>__class__</code>
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<span class="table-header">Method Details</span></td>
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<a name="__init__"></a>
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<div>
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<table class="details" border="1" cellpadding="3"
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<h3 class="epydoc"><span class="sig"><span class="sig-name">__init__</span>(<span class="sig-arg">self</span>,
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<span class="sig-arg">label</span>,
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<span class="sig-arg">master_host</span>=<span class="sig-default">None</span>,
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<span class="sig-arg">watchdog_period</span>=<span class="sig-default">120.0</span>)</span>
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<br /><em class="fname">(Constructor)</em>
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</h3>
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</td><td align="right" valign="top"
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>
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</td>
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</tr></table>
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<p>x.__init__(...) initializes x; see x.__class__.__doc__ for
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signature</p>
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<dl class="fields">
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<dt>Parameters:</dt>
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<dd><ul class="nomargin-top">
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<li><strong class="pname"><code>label</code></strong> (<code>str</code>) - the label that identifies the task manager</li>
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<li><strong class="pname"><code>master_host</code></strong> (<code>str</code> or <code>NoneType</code>) - If <code>None</code> (default), the task manager of the master
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process is located using the Pyro name server. If no name server
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is used, this parameter must be the hostname of the machine on
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which the master process runs, plus the port number if it is
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different from the default (7766).</li>
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<li><strong class="pname"><code>watchdog_period</code></strong> (<code>int</code> or <code>NoneType</code>) - the interval (in seconds) at which the slave process sends
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messages to the manager to signal that it is still alive. If
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None, no messages are sent at all. In that case, the manager
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cannot recognize if the slave job has crashed or been killed.</li>
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</ul></dd>
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<dt>Overrides:
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object.__init__
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</dt>
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