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Subject: Re: Distributed perft project

Author: Albert Bertilsson

Date: 10:50:57 12/11/03

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On December 11, 2003 at 13:34:36, Aaron Gordon wrote:

>On December 11, 2003 at 12:39:59, Albert Bertilsson wrote:
>
>>On December 11, 2003 at 12:34:33, Aaron Gordon wrote:
>>
>>>On December 11, 2003 at 07:08:30, Albert Bertilsson wrote:
>>>
>>>>Hi!
>>>>
>>>>If you have any wasted cpu-resources join my distributed perft project to
>>>>calculate perft(11). Any contribution large or small is welcome.
>>>>
>>>>The project is currently under testing to see how many will join (I'll not do it
>>>>myself) and to make sure that the server is working ok on the internet, I've
>>>>just tested it on LAN before.
>>>>
>>>>You need .Net framework from Microsoft to participate.
>>>>
>>>>Home page:
>>>>http://www.albert.nu/programs/dperft
>>>>
>>>>/Regards Albert
>>>
>>>Can I put multiple computers doing this and have it use the same user name (and
>>>still have it do different work units)? Or will I need to make a different user
>>>(MoD, MoD2, etc) for each computer? Thanks.
>>
>>There is no technical problem with having multiple computers doing multiple
>>workloads using the same username and password. But for statistics I recomend
>>you to have diffrent names (password could be the same). For example I use
>>AlbertProg and AlbertOffice to separate my two computers (otherwise they would
>>be visible as one very powerful computer). If you have a multiple CPU machine
>>I'd recommend that you use the same name/pass for all the clients running on
>>that machine (no multi-cpu support).
>
>Ah, ok. I ended up putting all of my available computers that aren't already
>doing something on your project. Hopefully it helps a little bit, here is what I
>have so far on the username MoD:
>
>Athlon XP 2.5GHz w/ 512mb hash
>Athlon XP 2.5GHz w/ 128mb hash
>Athlon XP 1.6GHz w/ 128mb hash
>Athlon TB 1.2GHz w/ 256mb hash
>Celeron-2 1.0GHz w/ 128mb hash
>
>Also I was wondering about something... Would you be able to add a benchmark
>mode into your current client, that way we can do some speed testing between the
>various cpus? Thanks.

You just doubled the number of computers on the project (Assuming the other
participants are using one computer each)! If you'd like to bench them for this
project just start the engine and type "perfthash 8". This will be a pretty good
benchmark for this problem (I guess you 2.5GHz 512MB Athlon) will do quite well.
Post your results here, I'll collect them.

A benchmark in the client GUI would be possible to implement, sending the result
to the server and storing it there, but I think the manual way is good enough.
If we go after perft(12) I'll update the client to include this feature.

/Regards Albert



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