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awips2/pythonPackages/scientific/Doc/Reference/Scientific.MPI.IO.LogFile-class.html
root 2c3569dd39 Initial revision of AWIPS2 11.9.0-7p5 
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<?xml version="1.0" encoding="ascii"?>
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<title>Scientific.MPI.IO.LogFile</title>
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<a href="Scientific-module.html">Package&nbsp;Scientific</a> ::
<a href="Scientific.MPI-module.html">Package&nbsp;MPI</a> ::
<a href="Scientific.MPI.IO-module.html">Module&nbsp;IO</a> ::
Class&nbsp;LogFile
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<!-- ==================== CLASS DESCRIPTION ==================== -->
<h1 class="epydoc">Class LogFile</h1><p class="nomargin-top"></p>
<p>File for logging events from all processes</p>
<p>The purpose of LogFile objects is to collect short text output from
all processors into a single file. All processes can write whatever they
want at any time; the date is simply stored locally. After the file has
been closed by all processes, the data is sent to process 0, which then
writes everything to one text file, neatly separated by process rank
number.</p>
<p>Note that due to the intermediate storage of the data, LogFile objects
should not be used for large amounts of data. Also note that all data is
lost if a process crashes before closing the file.</p>
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<td><span class="summary-sig"><a href="Scientific.MPI.IO.LogFile-class.html#__init__" class="summary-sig-name">__init__</a>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">filename</span>,
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<td><span class="summary-sig"><a name="close"></a><span class="summary-sig-name">close</span>(<span class="summary-sig-arg">self</span>)</span><br />
Close the file, causing the real text file to be written</td>
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Write buffered data to the text file</td>
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<td><span class="summary-sig"><a href="Scientific.MPI.IO.LogFile-class.html#write" class="summary-sig-name">write</a>(<span class="summary-sig-arg">self</span>,
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Write a string to the file</td>
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<h3 class="epydoc"><span class="sig"><span class="sig-name">__init__</span>(<span class="sig-arg">self</span>,
<span class="sig-arg">filename</span>,
<span class="sig-arg">communicator</span>=<span class="sig-default">None</span>)</span>
<br /><em class="fname">(Constructor)</em>
</h3>
</td><td align="right" valign="top"
>&nbsp;
</td>
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<dl class="fields">
<dt>Parameters:</dt>
<dd><ul class="nomargin-top">
<li><strong class="pname"><code>filename</code></strong> (<code>str</code>) - the name of the log file</li>
<li><strong class="pname"><code>communicator</code></strong> (<a href="Scientific.MPI.MPICommunicator-class.html"
class="link">Scientific.MPI.MPICommunicator</a>) - the communicator in which the file is accessible. The default
value of <code>None</code> means to use the global world
communicator, i.e. all possible processes.</li>
</ul></dd>
</dl>
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<h3 class="epydoc"><span class="sig"><span class="sig-name">write</span>(<span class="sig-arg">self</span>,
<span class="sig-arg">string</span>)</span>
</h3>
</td><td align="right" valign="top"
>&nbsp;
</td>
</tr></table>
<p>Write a string to the file</p>
<dl class="fields">
<dt>Parameters:</dt>
<dd><ul class="nomargin-top">
<li><strong class="pname"><code>string</code></strong> (<code>str</code>) - the string data</li>
</ul></dd>
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