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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<title>Benwanu</title>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<meta content="37.444542, -122.161050" name="ICBM" />
<link media="all" href="/stylesheets/nu.css" type ="text/css" rel="stylesheet" />
</head>
<body>
<div id="container">
<div id="header">
<div style="float:left; margin-right:10px">
<img src="/files/recycle-s.png" height="50" alt="recycling symbol" />
</div>
<div style="float:left">
<h1><a href="/">Programming Nu</a></h1>
<h3><a href="https://github.com/programming-nu">github.com/programming-nu</a></h3>
</div>
</div>
<div id="content">
<div class="atomentry">
<div class="content" style="margin-bottom:10px">
<p><img src="/files/benwanu-sample.jpg" alt="Mandelbrot Set"/></p>
<h1>Benwanu</h1>
<h2>Scripting Native Threads with Nu</h2>
</div>
<div class="extended">
<p>Benwanu is named after Benoit Mandelbrot, the discoverer of the Mandelbrot Set. Benwanu generates images of the Mandelbrot set. Its renderings follow the one Mandelbrot used in his 1982 book, The Fractal Geometry of Nature.</p>
<p>Benwanu demonstrates that Nu can be used to script multiple concurrent process threads (can your favorite scripting language do that?... today?). Parts of Benwanu are based on a multithreaded example in Aaron Hillegass' and Mark Dalrymple's Advanced Mac OS X Programming; those parts are used by permission. </p>
<p>Benwanu is written almost completely in Nu. Only the innermost rendering loop uses C. When Benwanu renders an image, it partitions the image into as many as eight sections and draws each section in a separate thread. While the rendering in each thread is performed with C, each thread's control and communication with the main thread is written in Nu.</p>
<p>Speedups vary depending on the image, but on my 8-core Mac Pro, I've seen 8-way renderings run up to six times faster than their single-threaded counterparts.</p>
<p>Benwanu also includes application help and a simple about box. See the sources for details.</p>
<p>Build and run it with "nuke run". To get error messages logged to the console, run it with "nuke debug". If you make a change that causes a crash, use "nuke gdb" to run the app in the debugger.</p>
<p><a href="http://github.com/timburks/nu/tree/master/examples/Benwanu">View the source in the git archives.</a></p>
</div>
</div> <!-- atomentry -->
</div> <!-- content -->
<div id="sidebar">
<div class="sidebar-node">
<h2><a href="/about">About Nu</a></h2>
</div>
<div class="sidebar-node">
<h2><a href="http://groups.google.com/group/programming-nu/topics">Google Group:<br/>Programming Nu</a></h2>
</div>
<div class="sidebar-node">
<h2><a href="/downloads">Download Nu</a></h2>
</div>
<div class="sidebar-node">
<h2>Git Repositories</h2>
<ul>
<li><a href="http://github.com/programming-nu/nu">nu</a></li>
<li><a href="http://github.com/programming-nu/programming-nu">programming-nu</a></li>
</ul>
</div>
<div class="sidebar-node">
<h2><a href="/documentation">Documentation</a></h2>
<ul>
<li><a href="/installing">Installing Nu</a></li>
<li><a href="/usage">Using Nu</a></li>
<li><a href="/embedding">Embedding Nu</a></li>
<li><a href="/reference">Nu Reference</a></li>
<li><a href="/syntax">- Syntax</a></li>
<li><a href="/operators">- Operators</a></li>
<li><a href="/types">- Types</a></li>
<li><a href="/doc/index.html">- Class Reference</a></li>
<li><a href="/help">Getting and Providing Help</a></li>
<li><a href="/debugging">Debugging Nu Programs</a></li>
<li><a href="/textmate">A Bundle for TextMate Users</a></li>
</ul>
</div>
<div class="sidebar-node">
<h2><a href="/examples">Examples</a></h2>
<ul>
<li><a href="/randomapp">RandomApp</a></li>
<li><a href="/randomappwithnibfile">RandomAppWithNibFile</a></li>
<li><a href="/currencyconverter">Currency Converter</a></li>
<li><a href="/nurocks">NuRocks</a></li>
<li><a href="/console">Console</a></li>
<li><a href="/growler">Growler</a></li>
<li><a href="/benwanu">Benwanu</a></li>
<li><a href="/screensaver">Screen Saver</a></li>
<li><a href="/maildemo">MailDemo</a></li>
<li><a href="/nuanywhere">NuAnywhere</a></li>
</ul>
</div>
<div class="sidebar-node">
<h2><a href="/tools">Tools</a></h2>
<ul>
<li><a href="/nuke">nuke, a make utility</a></li>
<li><a href="/nubile">nubile, a code formatter</a></li>
<li><a href="/nutest">nutest, a testing tool</a></li>
<li><a href="/nudoc">nudoc, a documentation generator</a></li>
<li><a href="/nutemplate">nutemplate, a templating tool</a></li>
<li><a href="/nubake">nubake, a code generation tool</a></li>
</ul>
</div>
<div class="sidebar-node">
<h2><a href="/">Archives</a></h2>
<ul>
<li style="font-weight:bold; font-size:smaller; background:#eee; line-height:100%">July 2019</li>
<li>
<a href="/posts/2019/07/25/programming-nu-on-github">
Programming Nu on GitHub</a>
</li>
<li style="font-weight:bold; font-size:smaller; background:#eee; line-height:100%">April 2013</li>
<li>
<a href="/posts/2013/04/14/Nu-2.1.0">
Nu-2.1.0</a>
</li>
<li style="font-weight:bold; font-size:smaller; background:#eee; line-height:100%">September 2011</li>
<li>
<a href="/posts/2011/09/02/Nu-2.0.1">
Nu-2.0.1</a>
</li>
<li style="font-weight:bold; font-size:smaller; background:#eee; line-height:100%">August 2011</li>
<li>
<a href="/posts/2011/08/25/Nu-2.0.0">
Nu-2.0.0</a>
</li>
<li style="font-weight:bold; font-size:smaller; background:#eee; line-height:100%">December 2009</li>
<li>
<a href="/posts/2009/12/09/stability">
Nu Seems Stable (by Jason Grossman)</a>
</li>
<li style="font-weight:bold; font-size:smaller; background:#eee; line-height:100%">November 2009</li>
<li>
<a href="/posts/2009/11/22/vi">
vi tips for Nu</a>
</li>
<li>
<a href="/posts/2009/11/17/Nu-0.4.0">
Nu-0.4.0</a>
</li>
<li style="font-weight:bold; font-size:smaller; background:#eee; line-height:100%">January 2009</li>
<li>
<a href="/posts/2009/01/02/macros">
Macros</a>
</li>
<li style="font-weight:bold; font-size:smaller; background:#eee; line-height:100%">December 2008</li>
<li>
<a href="/posts/2008/12/03/Nu-0.3.3">
Nu-0.3.3</a>
</li>
<li style="font-weight:bold; font-size:smaller; background:#eee; line-height:100%">June 2008</li>
<li>
<a href="/posts/2008/06/08/Nu-0.3.2">
Nu-0.3.2</a>
</li>
<li style="font-weight:bold; font-size:smaller; background:#eee; line-height:100%">May 2008</li>
<li>
<a href="/posts/2008/05/23/cocoa-programming-with-nu">
Cocoa Programming with Nu</a>
</li>
<li style="font-weight:bold; font-size:smaller; background:#eee; line-height:100%">March 2008</li>
<li>
<a href="/posts/2008/03/24/Nu-0.3.1">
Nu-0.3.1</a>
</li>
<li>
<a href="/posts/2008/03/21/announcing-nu">
Announcing Nu: The Video</a>
</li>
<li>
<a href="/posts/2008/03/18/nu-on-github">
Nu on github</a>
</li>
<li>
<a href="/posts/2008/03/14/new-platforms">
Linux and the iPhone</a>
</li>
<li>
<a href="/posts/2008/03/12/new-license">
Apache License, v. 2.0</a>
</li>
<li style="font-weight:bold; font-size:smaller; background:#eee; line-height:100%">February 2008</li>
<li>
<a href="/posts/2008/02/13/Nu-0.3.0">
Nu-0.3.0</a>
</li>
<li style="font-weight:bold; font-size:smaller; background:#eee; line-height:100%">December 2007</li>
<li>
<a href="/posts/2007/12/12/nupagepacker">
NuPagePacker</a>
</li>
<li>
<a href="/posts/2007/12/12/Nu-0.2.4">
Nu-0.2.4</a>
</li>
<li>
<a href="/posts/2007/12/07/Nu-0.2.3">
Nu-0.2.3</a>
</li>
<li style="font-weight:bold; font-size:smaller; background:#eee; line-height:100%">November 2007</li>
<li>
<a href="/posts/2007/11/26/Nu-0.2.2">
Nu-0.2.2</a>
</li>
<li>
<a href="/posts/2007/11/25/a-delicious-nu-screencast">
A Delicious Nu Screencast</a>
</li>
<li>
<a href="/posts/2007/11/12/Nu-0.2.1">
Nu-0.2.1</a>
</li>
<li style="font-weight:bold; font-size:smaller; background:#eee; line-height:100%">October 2007</li>
<li>
<a href="/posts/2007/10/17/new-literal-forms-in-nu">
New Literal Forms in Nu</a>
</li>
<li>
<a href="/posts/2007/10/17/escape-sequences-in-nu-strings">
Escape Sequences in Nu Strings</a>
</li>
<li>
<a href="/posts/2007/10/17/closures-in-nu">
Closures in Nu</a>
</li>
<li>
<a href="/posts/2007/10/17/Nu-0.2.0">
Nu-0.2.0</a>
</li>
<li>
<a href="/posts/2007/10/11/screen-savers-and-plugins">
Screen Savers and Plugins</a>
</li>
<li>
<a href="/posts/2007/10/10/markdown-in-nu">
Markdown in Nu</a>
</li>
<li>
<a href="/posts/2007/10/05/functional-nu">
Functional Aspects of Nu</a>
</li>
<li>
<a href="/posts/2007/10/04/randomapp-with-nibfile">
New Example: Nib Files</a>
</li>
<li>
<a href="/posts/2007/10/01/welcome">
Welcome</a>
</li>
</ul>
</div>
<div class="sidebar-node">
<h2><a href="/legal">Legal Details</a></h2>
</div>
</div> <!-- sidebar -->
</div><!-- container -->
</body>
</html>