These are used in parallel chess programs, and it's very common. A
pretty good article on this written by Hyatt (Crafty programmer and
author of former world computer chess champion Cray Blitz) and it's
called "A lock-less transposition table implementation for parallel
search chess engines",
It was 2 cores 2.6GHz. (intel core2 duo).
2008/3/21, Olivier Teytaud <[EMAIL PROTECTED]>:
> > What computing power did have that MoGo at its disposal?
>
>
> 4 cores, 2.4 GHz.
>
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Hi,
I have got a lockless hash table to work, and I thought I'd share the
results.
A lockless hash table is very important, because the usual approach that
consists in using a global lock during tree search and update does not
scale well, especially on 9x9. But it is possible to create a com
Olivier Teytaud wrote:
>> Would you guess that mogo is 2 or 3 ranks stronger at 19x19 with all
>> this hardware?
>
> I just claim that mpi-mogo wins with very high probability against
> sequential-mogo in 19x19. But I'm afraid that the improvement is
> disappointing against humans.
Hopefully it i
Would you guess that mogo is 2 or 3 ranks stronger at 19x19 with all
this hardware?
I just claim that mpi-mogo wins with very high probability against
sequential-mogo in 19x19. But I'm afraid that the improvement is
disappointing against humans.
I hope better improvements are possible thank
The million dollar question: How well does Mogo scale on this number
of processors?Can you give us at least some kind of generalization?
unfortunately, using more than 10 nodes is probably not very very useful
in 9x9, for the moment - but we have not tested that sufficiently,
and we have n
Would you guess that mogo is 2 or 3 ranks stronger at 19x19 with all
this hardware?
I would love to see a fair match, perhaps a serious 2 or 3 dan player
at 19x19 to be able to say with some certainty that Mogo has reached the
dan levels. This assumes Mogo has reached this level of course.
Has the program become that much stronger on 9x9 recently?
(Compared to the version was trying?)
*Parallelization: MPI ==> ~80% vs no mpi in 9x9 (for same number of
cores).
*Monte-Carlo improvement ==> strongly depends on number of simulations
and number of cores (as the multi-core reduces
On Fri, Mar 21, 2008 at 08:35:25PM +0100, Olivier Teytaud wrote:
>> What computing power did have that MoGo at its disposal?
>
> 4 cores, 2.4 GHz.
Thank you! That also puts the strength of CzechBot into some
perspective. :-)
Petr "Pasky" Baudis
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What computing power did have that MoGo at its disposal?
4 cores, 2.4 GHz.
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On Fri, Mar 21, 2008 at 05:07:01PM +0100, Olivier Teytaud wrote:
>> will this be with komi 7.5?
>
> Yes. Previous records against Guo Juan, as far
> as I know:
> - 1/3 wins with komi 7.5
> - 9/14 wins with komi 0.5 (mogo black,
> i.e. komi in favor of mogo)
What computing power d
The million dollar question: How well does Mogo scale on this number
of processors?Can you give us at least some kind of generalization?
My understanding is that on quad core machines you get most of the
benefit by simply running parallel versions of the algorithm and sharing
the data str
Olivier Teytaud wrote:
> Previous records against Guo Juan, as far
as I know:
- 1/3 wins with komi 7.5
- 9/14 wins with komi 0.5 (mogo black,
i.e. komi in favor of mogo)
Has the program become that much stronger on 9x9 recently?
(Compared to the version was trying?)
--
robert
will this be with komi 7.5?
Yes. Previous records against Guo Juan, as far
as I know:
- 1/3 wins with komi 7.5
- 9/14 wins with komi 0.5 (mogo black,
i.e. komi in favor of mogo)
Best regards,
Olivier
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comp
Hi,
On Fri, Mar 21, 2008 at 10:14:49AM +, Nick Wedd wrote:
> Saturday:
> 3/23/08 3:00 PM
> Game I (9x9)
> Game II 9x9
> Game III 9x9
> Played with 1.5 hours from the start of one round to the next
will this be with komi 7.5?
Petr "Pasky" Baudis
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In message <[EMAIL PROTECTED]>, Hiroshi Yamashita
<[EMAIL PROTECTED]> writes
This event sounds very interesting!
Saturday:
3/23/08 3:00 PM
Saturday:
3/22/08 3:00 PM
is right?
No, it is wrong, Saturday is 22nd. That is a mistake by whoever put the
message in "The Enclave" room.
http://p
Hi; it's saturday 22.
Thanks!
Regards,
Hiroshi Yamashita
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Saturday:
3/23/08 3:00 PM
Saturday:
3/22/08 3:00 PM
is right?
Hi; it's saturday 22.
Olivier
(stress++)
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This event sounds very interesting!
Saturday:
3/23/08 3:00 PM
Saturday:
3/22/08 3:00 PM
is right?
Regards,
Hiroshi Yamashita
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How well does the nakade improvement perform on 13x13?
no idea on 13x13, but it does not work on 19x19 (seemingly,
perhaps we just need tuning...).
Also, it works only, in terms of success rate against the old
mogo, for sufficiently large number of simulations per move.
Olivier
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How well does the nakade improvement perform on 13x13?
--
robert jasiek
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For information on the mogo/pro challenge:
- during preliminary tests, mogo has won 4/0 against a very high level
human; at that time we were just very very very happy :-)
- some other humans, supposed to be weaker, have however
won some games at that time (before the nakade correction);
- th
This Easter weekend, there will be a challenge between MoGo running on a
very powerful system, and Catalin Taranu, 5-dan professional.
The following is from the info of "The Enclave" room on KGS. It is
confirmed by the page http://paris2008.jeudego.org/
<< quotation starts >>
A uniqu
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