From: Joel Pearson <lists@...>
Date: 2012-09-05T22:04:51+09:00
Subject: Re: Long calculation & time limit

If it's the file read that's taking a long time, maybe you should go 
about that a different way. Here's an example I found after a few 
seconds of googling:

http://stackoverflow.com/questions/5557157/best-way-to-work-with-large-amounts-of-csv-data-quickly

There are a few good ideas and comments in there, you might want to look 
into IO.foreach

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