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<title>Intel® Threading Building Blocks. Seismic sample</title>
</head>
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<h1 class="title">Intel® Threading Building Blocks.<br>Seismic sample</h1>
</div>
<p>
Parallel seismic wave simulation that demonstrates use of parallel_for and affinity_partitioner.
<br><br>
The example can be built in the offload version to run on Intel® Many Integrated Core (Intel® MIC) Architecture based coprocessor (see <a href="../../index.html">build instructions</a>).
<br><br>
<b>Note:</b> Currently, the offload version does not support GUI and can only be used with console mode.
</p>
<div class="changes">
<div class="h3-alike">System Requirements</div>
<input type="checkbox">
<div class="show-hide">
<p>
For the most up to date system requirements, see the <a href="http://software.intel.com/en-us/articles/intel-threading-building-blocks-release-notes">release notes.</a>
</p>
</div>
</div>
<div class="changes">
<div class="h3-alike">Files</div>
<input type="checkbox" checked="checked">
<div class="show-hide">
<dl>
<dt><a href="main.cpp">main.cpp</a>
<dd>Main program which parses command line options and runs the algorithm with different numbers of threads.
<dt><a href="universe.h">universe.h</a>
<dd>Wave propagation methods interface.
<dt><a href="universe.cpp">universe.cpp</a>
<dd>Wave propagation methods implementation.
<dt><a href="seismic_video.h">seismic_video.h</a>
<dd>GUI mode support interface.
<dt><a href="seismic_video.cpp">seismic_video.cpp</a>
<dd>GUI mode support implementation.
<dt><a href="Makefile">Makefile</a>
<dd>Makefile for building the example.
</dl>
</div>
</div>
<div class="changes">
<div class="h3-alike">Directories</div>
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<div class="show-hide">
<dl>
<dt><a href="msvs/">msvs</a>
<dd>Contains Microsoft* Visual Studio* workspace for building and running the example (Windows* systems only).
<dt><a href="xcode/">xcode</a>
<dd>Contains Xcode* IDE workspace for building and running the example (macOS* systems only).
</dl>
<p>For information about the minimum supported version of IDE, see <a href="http://software.intel.com/en-us/articles/intel-threading-building-blocks-release-notes">release notes.</a></p>
</div>
</div>
<div class="changes">
<div class="h3-alike">Build instructions</div>
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<div class="show-hide">
<p>General build directions can be found <a href="../../index.html">here</a>.</p>
<p>The following additional options are supported:</p>
<dl>
<dt><tt>make [(general targets: {release, debug} [test])] UI={con, gdi, d2d, x, mac}</tt>
<dd>Build and run as usual, but build with the specified GUI driver: console, GDI+*,
Direct2D*, X11, or OpenGL*
(see the description of the <a href="../../common/index.html">common GUI code</a>
for more information on available graphics support).<br>
For Linux* and macOS* systems, the best available driver is detected automatically by the Makefile.<br>
For Windows* systems, UI=gdi is the default GUI driver; compiling with UI=d2d may offer superior
performance, but can only be used if the Microsoft* DirectX* SDK is installed on your system
and if overlay is supported by your graphics card.<br>
Use UI=con to build without the GUI for use in making performance measurements
<i>(strongly recommended when measuring performance or scalability; see note below)</i>.
<dt><tt>make [(above options or targets)] XARCH=x64</tt>
<dd>Build and run as above, but also specify XARCH=x64
(or XARCH=AMD64 for older compilers) when building the example on Windows* as a 64-bit binary.
<dt><tt>make [(above options or targets)] DDLIB_DIR=<<i>specify path to Direct Draw* SDK here</i>></tt>
<dd>If you experience ddraw.lib linking problems, specify the correct library directory via this option.
<dt><tt>make [(above options or targets)] CXXFLAGS=-DX_FULLSYNC</tt>
<dd>Build and run as above, but enable full X11 synchronization if you experience "tearing" of motion on slower video systems.
</dl>
</div>
</div>
<div class="changes">
<div class="h3-alike">Usage</div>
<input type="checkbox" checked="checked">
<div class="show-hide">
<dl>
<dt><tt>seismic <i>-h</i></tt>
<dd>Prints the help for command line options
<dt><tt>seismic [<i>n-of-threads</i>=value] [<i>n-of-frames</i>=value] [<i>silent</i>] [<i>serial</i>]</tt>
<dt><tt>seismic [<i>n-of-threads</i> [<i>n-of-frames</i>]] [<i>silent</i>] [<i>serial</i>]</tt>
<dd><i>n-of-threads</i> is the number of threads to use; a range of the form low[:high], where low and optional high are non-negative integers or 'auto' for a platform-specific default number.<br>
<i>n-of-frames</i> is a number of frames the example processes internally.<br>
<i>silent</i> - no output except elapsed time.<br>
<i>serial</i> - in GUI mode start with serial version of algorithm.<br>
<dt>To run a short version of this example, e.g., for use with Intel® Parallel Inspector::
<dd>Build a <i>debug</i> version of the example
(see the <a href="../../index.html">build instructions</a>).
<br>Run it with the desired number of threads and smaller number of frames, e.g., <tt>seismic 4 5</tt>.
</dl>
</div>
</div>
<div class="changes">
<div class="h3-alike">Hot keys</div>
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<div class="show-hide">
<p>
The following hot keys can be used in interactive execution mode when the example is compiled with the graphical
user interface:
</p>
<dl>
<dt><left mouse button>
<dd>Starts new seismic wave in place specified by mouse cursor.
<dt><space>
<dd>Toggles between parallel and serial execution modes.
<dt><p>
<dd>Enables parallel execution mode.
<dt><s>
<dd>Enables serial execution mode.
<dt><e>
<dd>Enables screen updates.
<dt><d>
<dd>Disables screen updates <i>(strongly recommended when measuring performance or scalability; see note below)</i>.
<dt><esc>
<dd>Stops execution.
</dl>
</div>
</div>
<div class="changes">
<div class="h3-alike">Notes</div>
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<div class="show-hide">
<ul>
<li>While running with the GUI display turned on should yield reasonable performance in most cases, <i>running with the GUI
display turned off is strongly recommended</i> in order to demonstrate the full performance and scalability of the example.
</ul>
</div>
</div>
<br>
<a href="../index.html">Up to parent directory</a>
<hr>
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<div class="h3-alike">Legal Information</div>
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<p>
Intel and the Intel logo are trademarks of Intel Corporation in the U.S. and/or other countries.
<br>* Other names and brands may be claimed as the property of others.
<br>© 2018, Intel Corporation
</p>
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