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Subject: Re: Running Windows engines under Linux + xboard howto :) works

Author: James Swafford

Date: 09:57:11 09/23/05

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On September 23, 2005 at 12:50:05, Joshua Shriver wrote:

>For engines that have both linux and windows binaries I'll do some nps
>comparisons and post them online.

This isn't a perfect measurement, since the compiler is still a variable.
The Microsoft compilers will typically produce faster programs than
gcc, for example.  I think the differene is still > 10%.

--
James


>
>As for Shredder, is it UCI based? Basicaly do you have to run it under their GUI
>or can you use polyglot + winboard/arena?
>
>If so you should be able to run it under wine. Keep in mine wine isn't an
>emulator. It's not trying to run an entire version of windows and then run the
>program, it just runs it as native, and when it comes across a system or
>non-linux call it translates it. So while it might not be 100% as fast, it
>should be really close.
>
>Keep in mind a chess engine that's cli based is more or less selfsufficient,
>only making simple i/o calls. So that limites the amount that wine actually has
>to translate.
>
>Then again I might be wrong ;) but from the test games so far it seems right.
>Fruit2.1 linux vs Fruit2.1 windows is 3-3-0 right now.
>
>Josh
>
>>
>>Did you measure the nps of the chess programs? Crafty for instance exists for
>>Windows as well as for Linux.
>>
>>I use VMWare (www.vmware.com); it slows down i.e. the Shredder engine less then
>>10%, what means if you run Shredder in a virtual windows machine under Linux,
>>your 3 GHz computer is as fast as one with 2,7 GHz. But VMWare costs money. A
>>free emulator is qemu (http://fabrice.bellard.free.fr/qemu/), but I've never
>>tried. Maybe somebody here can measure how fast a chessprogram runs under
>>Windows in qemu.
>>
>>Lars



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