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2015-08-19 15:38:41 +00:00
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doc/Section_start.html
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@ -395,8 +395,18 @@ within the LAMMPS code. The options that are currently recogized are:</p>
</ul>
<p>The read_data and dump commands will read/write gzipped files if you
compile with -DLAMMPS_GZIP. It requires that your machine supports
the &#8220;popen&#8221; function in the standard runtime library and that a gzip
the &#8220;popen()&#8221; function in the standard runtime library and that a gzip
executable can be found by LAMMPS during a run.</p>
<div class="admonition warning">
<p class="first admonition-title">Warning</p>
<p class="last">on some clusters with high-speed networks, using the
fork() library calls (required by popen()) can interfere with the fast
communication library and lead to simulations using compressed output
or input to hang or crash. For selected operations, compressed file
I/O is also available using a compression library instead, which are
provided in the COMPRESS package. From more details about compiling
LAMMPS with packages, please see below.</p>
</div>
<p>If you use -DLAMMPS_JPEG, the <a class="reference internal" href="dump_image.html"><em>dump image</em></a> command
will be able to write out JPEG image files. For JPEG files, you must
also link LAMMPS with a JPEG library, as described below. If you use
@ -410,6 +420,11 @@ will be available to support on-the-fly generation of rendered movies
the need to store intermediate image files. It requires that your
machines supports the &#8220;popen&#8221; function in the standard runtime library
and that an FFmpeg executable can be found by LAMMPS during the run.</p>
<div class="admonition warning">
<p class="first admonition-title">Warning</p>
<p class="last">Similar to the note above, this option can conflict
with high-speed networks, because it uses popen().</p>
</div>
<p>Using -DLAMMPS_MEMALIGN=&lt;bytes&gt; enables the use of the
posix_memalign() call instead of malloc() when large chunks or memory
are allocated by LAMMPS. This can help to make more efficient use of