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Timestamp:
Mar 13, 2007 2:52:40 AM (18 years ago)
Author:
raasch
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  • palm/trunk/DOC/app/chapter_4.5.6.html

    r54 r62  
    11<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
    2 <html>
    3 <head>
    4   <meta http-equiv="CONTENT-TYPE"
    5  content="text/html; charset=windows-1252">
    6   <title>PALM chapter 4.5.6</title>
    7   <meta name="GENERATOR" content="StarOffice 7  (Win32)">
    8   <meta name="AUTHOR" content="Siegfried Raasch">
    9   <meta name="CREATED" content="20041029;13171001">
    10   <meta name="CHANGED" content="20041117;12013945">
    11   <meta name="KEYWORDS" content="parallel LES model">
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    14                 @page { size: 21cm 29.7cm }
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    16         </style>
    17 </head>
    18 <body dir="ltr" lang="en-US">
    19 <h4 style="line-height: 100%;"><font size="4">4.5.6 Plots of compressed
     2<html><head>
     3<meta http-equiv="CONTENT-TYPE" content="text/html; charset=windows-1252"><title>PALM
     4chapter 4.5.6</title> <meta name="GENERATOR" content="StarOffice 7 (Win32)"> <meta name="AUTHOR" content="Siegfried Raasch"> <meta name="CREATED" content="20041029;13171001"> <meta name="CHANGED" content="20041117;12013945"> <meta name="KEYWORDS" content="parallel LES model"> <style>
     5<!--
     6@page { size: 21cm 29.7cm }
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     8</style></head>
     9
     10<body style="direction: ltr;" lang="en-US"><h4 style="line-height: 100%;"><font size="4">4.5.6
     11Plots of compressed
    20123d volume data with AVS</font></h4>
    21 <p style="line-height: 100%;">Files containing 3d volume data usually
     13<p style="line-height: 100%;">Files containing 3d volume
     14data usually
    2215need large amounts of disc space. For parallel runs, the disc space
    2316requirement can
    … …  
    2619compression is permitted only for parallel runs on Cray-T3E). Data
    2720compression
    28 can switched on by setting the initialization parameter <a
    29  href="chapter_4.2.html#do3d_compress">do3d_compress</a>
    30 = <i>.TRUE.</i> and by assigning the desired accuracy (number of
     21can switched on by setting the initialization parameter <a href="chapter_4.2.html#do3d_compress">do3d_compress</a>
     22= <i>.TRUE.</i> and by assigning the desired accuracy
     23(number of
    3124significant digits) via <a href="chapter_4.2.html#do3d_precision">do3d_precision</a>.
    3225A separate accuracy must be assigned for each individual quantity.
    … …  
    3831output. To plot these compressed data the following output command must
    3932be inserted into the
    40 <span style="font-weight: bold;">mrun</span> configuration file<b> </b>(in
     33<span style="font-weight: bold;">mrun</span>
     34configuration file<b> </b>(in
    4135addition to the steps described
    4236in <a href="chapter_4.5.5.html">chapter
    43374.5.5</a>): </p>
    44 <ul>
    45   <pre style="margin-bottom: 0.5cm; line-height: 100%;"><font
    46  style="font-size: 10pt;" size="2">OC:[[ -f PLOT3D_COMPRESSED ]] &amp;&amp; tar cf PLOT3D_DATA PLOT3D_DATA_*</font></pre>
    47 </ul>
    48 <p style="line-height: 100%;">If a file named <tt><font
    49  style="font-size: 10pt;" size="2">PLOT3D_COMPRESSED</font></tt>
    50 exists in the local working directory, <tt><font
    51  face="Thorndale, serif">t</font></tt><font face="Thorndale, serif">he
    52 files produ</font>ced by the individual processors are packed into one
     38<ul> <pre style="margin-bottom: 0.5cm; line-height: 100%;"><font style="font-size: 10pt;" size="2">OC:[[ -f PLOT3D_COMPRESSED ]] &amp;&amp; tar cf PLOT3D_DATA PLOT3D_DATA_*</font></pre></ul>
     39<p style="line-height: 100%;">If a file named <tt><font style="font-size: 10pt;" size="2">PLOT3D_COMPRESSED</font></tt>
     40exists in the local working directory, <tt><font face="Thorndale, serif">t</font></tt><font face="Thorndale, serif">he
     41files produ</font>ced by the individual processors are packed
     42into one
    5343file (<tt><font style="font-size: 10pt;" size="2">PLOT3D_DATA</font></tt>)
    5444using the "tar"
    5545command. The flag file
    56 <tt><font size="2">PLOT3D_COMPRESSED </font></tt>is created by PALM
     46<tt><font size="2">PLOT3D_COMPRESSED </font></tt>is
     47created by PALM
    5748whenever data in compressed form is to be output. For
    5849uncompressed output, the individual files have to be joined via the
    5950program <tt><font style="font-size: 10pt;" size="2">combine_plot_fields.x</font>
    60 </tt>. In this case, an additional output command is also necessary
     51</tt>. In this case, an additional output command is also
     52necessary
    6153(see chapter 4.5.5). For compressed output, this output command may
    6254remain
    63 unchanged in the configuration file, since <tt><font
    64  style="font-size: 10pt;" size="2">combine_plot_fields.x</font></tt>
     55unchanged in the configuration file, since <tt><font style="font-size: 10pt;" size="2">combine_plot_fields.x</font></tt>
    6556recognizes the
    66 ex<font face="Thorndale, serif">isten</font>ce of <tt><font
    67  style="font-size: 10pt;" size="2">PLOT3D_COMPRESSED</font></tt>
     57ex<font face="Thorndale, serif">isten</font>ce of <tt><font style="font-size: 10pt;" size="2">PLOT3D_COMPRESSED</font></tt>
    6858and carries out no actions in such cases. </p>
    69 <p style="line-height: 100%;">The file connection statements for the
     59<p style="line-height: 100%;">The file connection
     60statements for the
    7061local file <a href="chapter_3.4.html#PLOT3D_DATA">PLOT3D_DATA</a>
    7162and all further necessary statements to create plots of 3d volume
    7263data can be found in <a href="chapter_4.5.5.html">chapter
    73644.5.5</a>. </p>
    74 <p style="line-height: 100%;">After been transferred to the local
     65<p style="line-height: 100%;">After been transferred to
     66the local
    7567computer
    7668of the user, the tar file with the compressed data cannot be read
    77 with the usual <span style="font-weight: bold;">AVS</span> module
    78 “read field”. Alternatively,
    79 the module “read_compressed_field” particularly developed
     69with the usual <span style="font-weight: bold;">AVS</span>
     70module
     71&ldquo;read field&rdquo;. Alternatively,
     72the module &ldquo;read_compressed_field&rdquo; particularly
     73developed
    8074for this purpose must be used. This module is located in a module
    8175library under: </p>
    82 <pre style="margin-bottom: 0.5cm; line-height: 100%;"><font
    83  style="font-size: 10pt;" size="2">http://www.muk.uni-hannover.de/~raasch/PALM_group/AVS/Libraries/palm</font></pre>
    84 <p style="line-height: 100%;">This module must be loaded within AVS
     76<pre style="margin-bottom: 0.5cm; line-height: 100%;"><font style="font-size: 10pt;" size="2">http://www.muk.uni-hannover.de/~raasch/PALM_group/AVS/Libraries/palm</font></pre><p style="line-height: 100%;">This module must be loaded within
     77AVS
    8578(network editor - &gt; module
    8679tools - &gt; read module library) and then it can be used like all
    87 other modules. <a
    88  href="http://www.muk.uni-hannover.de/institut/people/raasch/PALM_group/AVS/Doc/read_compressed_field.html">Further
     80other modules. <a href="http://www.muk.uni-hannover.de/institut/people/raasch/PALM_group/AVS/Doc/read_compressed_field.html">Further
    8981information</a> about using this module is available (e.g. for
    90 accelerated treatment of compressed data with <span
    91  style="font-weight: bold;">AVS</span> the module
    92 <a
    93  href="http://www.muk.uni-hannover.de/institut/people/raasch/PALM_group/AVS/Doc/write_compressed_field.html">write_compressed_field</a>
     82accelerated treatment of compressed data with <span style="font-weight: bold;">AVS</span> the module
     83<a href="http://www.muk.uni-hannover.de/institut/people/raasch/PALM_group/AVS/Doc/write_compressed_field.html">write_compressed_field</a>
    9484is available). <br>
    9585&nbsp; <br>
    9686&nbsp; </p>
    97 <hr>
    98 <p style="line-height: 100%;"><br>
    99 <font color="#000080"><font color="#000080"><a href="chapter_4.5.5.html"><font
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    106 <p style="line-height: 100%;">&nbsp;<i>Last change:&nbsp;</i> 20/04/05
    107 (SR)</p>
    108 </body>
    109 </html>
     87<hr><p style="line-height: 100%;"><br>
     88<font color="#000080"><font color="#000080"><a href="chapter_4.5.5.html"><font color="#000080"><img src="left.gif" name="Grafik1" align="bottom" border="2" height="32" width="32"></font></a><a href="index.html"><font color="#000080"><img src="up.gif" name="Grafik2" align="bottom" border="2" height="32" width="32"></font></a><a href="chapter_4.5.7.html"><font color="#000080"><img src="right.gif" name="Grafik3" align="bottom" border="2" height="32" width="32"></font></a></font></font></p><p style="line-height: 100%;">&nbsp;<i>Last
     89change:&nbsp;</i> $Id$</p>
     90</body></html>
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