Misc/abrash-black-book
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Remove colour attributes from body and strip most of the font tags out

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James Gregory 2013-12-30 13:57:02 +11:00
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<!--UNASSIGNED2//--></HEAD><BODY LINK=#0000FF ALINK=#000099 VLINK=#0000FF BGCOLOR=#FFFFFF>
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<TABLE WIDTH="100%"><TD VALIGN="TOP" ALIGN="LEFT" WIDTH="5%"><IMG SRC="images/i.jpg"><TD VALIGN="TOP" ALIGN="LEFT" WIDTH="95%"><I><SMALL>We&rsquo;ve gotten more than a 30-times speedup simply by removing a little of the abstraction that C<SMALL>++</SMALL> encourages, and by storing and processing the data in a manner appropriate for the typical nature of the data itself. In other words, we&rsquo;ve done some linear, left-brained optimization (using pointers and reducing calls) and some non-linear, right-brained optimization (understanding the real problem and listening for the creative whisper of non-obvious solutions).</SMALL></I>
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<P>No doubt we could get another two to five times improvement with good assembly code&mdash;but that&rsquo;s dwarfed by a 30-times improvement, so optimization at a conceptual level <I>must</I> come first.</P>
<H4 ALIGN="LEFT"><A NAME="Heading11"></A><FONT COLOR="#000077">The Challenge That Ate My Life</FONT></H4>
<H4 ALIGN="LEFT"><A NAME="Heading11"></A>The Challenge That Ate My Life</H4>
<P>The most recent optimization challenge I laid my community of readers was to write the fastest possible Game of Life generation engine. By &ldquo;engine&rdquo; I meant that I didn&rsquo;t care about time spent in input or output, only time consumed by the call to <B>next-generation.</B> The time spent updating the cellmap was what I wanted people to concentrate on.</P>
<P>Here are the rules I laid down for the challenge:</P>
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<font face="Verdana,sans-serif" size="1">Graphics Programming Black Book &copy; 2001 Michael Abrash</font>
Graphics Programming Black Book &copy; 2001 Michael Abrash
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