Ivanhoe question: default, popcnt, or prefetch?

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notyetagm
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Ivanhoe question: default, popcnt, or prefetch?

Post by notyetagm » Tue Jul 13, 2010 8:03 am

The Ivanhoe RAR file that I downloaded from http://www.chesslogik.com/downloads/IvanHoe_999957a.rar has engines under each of three folders: default, popcnt, and prefetch.

Which one should I use? What is the difference?

Thanks
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Bo Persson
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Real Name: Bo Persson
Location: Malmö, Sweden

Re: Ivanhoe question: default, popcnt, or prefetch?

Post by Bo Persson » Tue Jul 13, 2010 4:45 pm

notyetagm wrote:The Ivanhoe RAR file that I downloaded from http://www.chesslogik.com/downloads/IvanHoe_999957a.rar has engines under each of three folders: default, popcnt, and prefetch.

Which one should I use? What is the difference?

Thanks
The default should work on most hardware. The others might be slightly faster on computers having the popcnt and prefetch instructions (and not work at all otherwise).
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