[computer-go] Software for a supercomputer?

2009-10-09 Thread Tapani Raiko
Hi all,

I have a possibility to organize a demonstration match with a strong human 
against a supercomputer at the Alternative Party in Helsinki, Finland on Oct 
23-25, http://www.altparty.org/ which is a fair for computer enthusiast. The 
expected participation is over 1000 people.

The computer (Cray CX1) has a Linux operating system, but I might be able to 
boot it from a USB stick to Windows, too. It consists of nodes that each have a 
2 x quad core Xeon E5472 3.0GHz CPU and 32 GB RAM. I heard that with OpenMP it 
could parallelize within one node, but to get the full power, one would need to 
use MPI.

I am now asking for help. Do you know which program could be used for best 
performance (or most cores)? Is it easy to set up things running? (I need to 
decide soon whether I will organize it or not.)

Thanks in advance,
Tapani Raiko

-- 
 Tapani Raiko, tapani.ra...@tkk.fi, +358 50 5225750
 http://www.iki.fi/raiko/

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RE: [computer-go] Software for a supercomputer?

2009-10-09 Thread David Fotland
My guess would be mogo.  Many Faces uses MPI, but today it only scales well
to 32 cores, and it only runs on windows.  How many cores do you have in
your Cray?

It would be easy to port to linux (just change the code to start and wait
for a thread), but I don't have a linux MPI machine to test on, so it would
be difficult to do it this quickly.

It you can boot it to Windows, with an MPI library, I can send you something
to test with to see if it works.

David

 -Original Message-
 From: computer-go-boun...@computer-go.org [mailto:computer-go-
 boun...@computer-go.org] On Behalf Of Tapani Raiko
 Sent: Friday, October 09, 2009 6:21 AM
 To: computer-go
 Subject: [computer-go] Software for a supercomputer?
 
 Hi all,
 
 I have a possibility to organize a demonstration match with a strong
 human against a supercomputer at the Alternative Party in Helsinki,
 Finland on Oct 23-25, http://www.altparty.org/ which is a fair for
 computer enthusiast. The expected participation is over 1000 people.
 
 The computer (Cray CX1) has a Linux operating system, but I might be
 able to boot it from a USB stick to Windows, too. It consists of nodes
 that each have a 2 x quad core Xeon E5472 3.0GHz CPU and 32 GB RAM. I
 heard that with OpenMP it could parallelize within one node, but to get
 the full power, one would need to use MPI.
 
 I am now asking for help. Do you know which program could be used for
 best performance (or most cores)? Is it easy to set up things running?
 (I need to decide soon whether I will organize it or not.)
 
 Thanks in advance,
 Tapani Raiko
 
 --
  Tapani Raiko, tapani.ra...@tkk.fi, +358 50 5225750
  http://www.iki.fi/raiko/
 
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Re: [computer-go] [Fwd: Announcement ICGA Events 2010]

2009-10-09 Thread Petr Baudis
On Tue, Oct 06, 2009 at 01:33:10AM +0900, Hideki Kato wrote:
 The tournament in Taiwan allows playing through KGS but according to 
 the rules http://ai.csie.ndhu.edu.tw:9898/eng/p_7.htm, it's 
 preferred to participate at least one person from each team.  If not, 
 the entry fee will be doubled.  Please ask the organizer for detail 
 (Click Contact us on http://ai.csie.ndhu.edu.tw:9898/eng/).

Thanks both to you and Jacques for all the information! I will yet see
if I come up with something on par with MoGoTW or Zen until the
tournament. ;-)

 In addition to above, UEC Cup will allow remote participants, though 
 the rules are not open yet.  The registration will start Oct 9th.  See 
 http://jsb.cs.uec.ac.jp/~igo/eng/index.html for detail.

Interesting!

It now says that Japanese rules will be used; this is a severe problem
for me, I wonder how will other cope - can any of the strong MonteCarlo
programs play with Japanese rules?

Reading further, it says we do not permit to play through the Internet,
because it is important for us to meet together in the venue; so maybe
remote participation is not possible after all...

-- 
Petr Pasky Baudis
A lot of people have my books on their bookshelves.
That's the problem, they need to read them. -- Don Knuth
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RE: [computer-go] [Fwd: Announcement ICGA Events 2010]

2009-10-09 Thread David Fotland

Many Faces fully supports Japanese rules.  When it plays on KGS it only uses
Japanese rules.  Internally I use Chinese rules, but I adjust the score at
the end of the playouts depending on how many important passes have been
played.  Getting it right was a little tricky, but it's not a lot of code in
the end.  There was some discussion in the archives you can probably find.
Remi recommended adjusting the komi by one point to account for who passes
last, but I don't do that.

David

 
 It now says that Japanese rules will be used; this is a severe problem
 for me, I wonder how will other cope - can any of the strong MonteCarlo
 programs play with Japanese rules?
 
 Reading further, it says we do not permit to play through the
 Internet,
 because it is important for us to meet together in the venue; so maybe
 remote participation is not possible after all...
 
 --
   Petr Pasky Baudis
 A lot of people have my books on their bookshelves.
 That's the problem, they need to read them. -- Don Knuth
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Re: [computer-go] Rating variability on CGOS

2009-10-09 Thread David Ongaro

David Fotland schrieb:

Many Faces also had more trouble against pachi than you would expect from
its rating.  Perhaps Pachi is generally stronger, but throws away some
percentage of games (even against weak players) because of some bug.
  


Seems plausible. But instead of guessing, the standard deviation of the 
rating should give a good indication of such problems. So why doesn't 
CGOS provide the standard deviation of ranks? Should be easy enough to 
calculate and it provides valuable information about the buggyness of 
a program.


In physics, a measured value without standard deviation is useless. For 
good reasons.


David


-Original Message-
From: computer-go-boun...@computer-go.org [mailto:computer-go-
boun...@computer-go.org] On Behalf Of Brian Sheppard
Sent: Thursday, October 08, 2009 12:48 PM
To: computer-go@computer-go.org
Subject: [computer-go] Rating variability on CGOS

About two weeks ago I took Pebbles offline for an extensive overhaul of
its
board representation. At that time Valkyria 3.3.4 had a 9x9 CGOS rating
of
roughly 2475.

When I looked today, I saw Valkyria 3.3.4 rated at roughly 2334, so I
wondered what was going on.

I found a contributing factor: Valkyria has massively different results
against Pachi than against Pebbles. It happens that Pachi started
playing a
day or two after Pebbles went offline.

Pebbles and Pachi are both rated around 2200, but Valkyria shreds
Pebbles a
lot more often than Pachi:

Pachi:   185 / 273 = 67.8%
Pebbles: 429 / 503 = 85.3%

There are a lot of lessons here...

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[computer-go] Software for a supercomputer?

2009-10-09 Thread Martin Mueller
 I am now asking for help. Do you know which program could be used  
for
 best performance (or most cores)? Is it easy to set up things  
running?

 (I need to decide soon whether I will organize it or not.)
My guess would be - either Mogo, or Fuego with IBM's BlueFuego MPI  
extension. We have some hope that BlueFuego might scale better than  
Mogo, but have not done any comparison of current systems.


Is this 9x9 or 19x19? How many cores? The systems we have mainly  
tested on are 8 or 10 nodes with 8 shared memory cores in each node  
and infiniband interconnect. E.g. the system that won the 9x9 game  
against Zhou 9-Dan was a 10x8 core.


Is it easy to set up? If you have MPI running it should be OK.

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