Cluster Toga

[[toc]]
**[[Home]] * [[Engines]] * Cluster Toga**

**Cluster Toga**,
a chess engine based on [[Toga|Toga II]] by [[Thomas Gaksch]], in turn based on [[Fruit|Fruit 2.1]] by [[Fabien Letouzey]]. Cluster Toga is a [[Parallel Search|parallel extension]] of Toga, implemented by [[Kai Himstedt]] and [[Ulf Lorenz]]. It considers the [[Young Brothers Wait Concept]] using [[http://en.wikipedia.org/wiki/Message_Passing_Interface|Message Passing Interface (MPI)]] for a [[http://en.wikipedia.org/wiki/Cilk#Work-stealing|work-stealing]] mechanism to [[http://en.wikipedia.org/wiki/Load_balancing_%28computing%29|balance the load]] dynamically, and utilizes a [[Shared Hash Table|shared hash table]]. Cluster Toga represents an intra-cluster worker of the [[http://en.wikipedia.org/wiki/Computer_cluster|cluster]] chess entity [[GridChess]]. However, Cluster Toga played the [[IPCCC 2007]] and the [[WCCC 2008]] as "stand alone" engine instead of GridChess, due to a licensing issue in connection with the use of some parts of [[Crafty]] <ref>[[Kai Himstedt]] (**2012**). //GridChess: Combining Optimistic Pondering with the Young Brothers Wait Concept//. [[ICGA Journal]], Vol. 35, No. 2</ref>.

=Description=
given in 2008 from the [[ICGA]] tournament site <ref>[[http://www.game-ai-forum.org/icga-tournaments/program.php?id=568|Cluster Toga's ICGA Tournaments]]</ref>:
|| {{Cluster Toga is a Young Brothers Wait Concept (YBWC) parallelized version of Toga based on Fruit capable to run on a high performance cluster. In fact it is a "stand alone" base engine of the GridChess system which participated [[WCCC 2007|last year in Amsterdam]] but is limited to use a single cluster.}} ||

=Photos & Games=
==IPCCC 2007==
|| [[image:clustertoga-shredder.JPG width="640" link="http://www.czyzewski.org/sebi/Paderborn2007/"]] ||
|| [[IPCCC 2007]], [[Kai Himstedt]], [[Stefan Meyer-Kahlen]], [[Cluster Toga]] - [[Shredder]] <ref>[[http://www.czyzewski.org/sebi/Paderborn2007/|Index of /sebi/Paderborn2007]] by [[Sebastian Böhme]]</ref> <ref>[[http://old.csvn.nl/pad_hist.html|International Paderborn Computer Chess Championships (IPCCC)]], [[http://old.csvn.nl/|CSVN-tournament site]]</ref> ||
[[code]]
[Event "IPCCC 2007"]
[Site "Paderborn, GER"]
[Date "2007.12.27"]
[Round "02"]
[White "Cluster Toga"]
[Black "Shredder"]
[Result "1/2-1/2"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.O-O-O 
Bd7 9.f4 b5 10.Bxf6 gxf6 11.Kb1 Rc8 12.g4 h5 13.gxh5 Rxh5 14.h4 Qb6 15.Nce2
Rh8 16.Rh2 Na5 17.Ng3 Nc4 18.Qe2 a5 19.Qf3 a4 20.Bxc4 bxc4 21.Nde2 Rb8 22.Qc3 
Qb4 23.a3 Qxc3 24.Nxc3 Bh6 25.Nge2 Ke7 26.Rd4 Rhc8 27.Rh1 Rc7 28.Ka2 Rg8 
29.Rhd1 Rc6 30.Kb1 Rg4 31.h5 Rh4 32.Nb5 Rh2 33.Nxd6 e5 34.Rd5 Rxe2 35.Nxf7 
Kxf7 36.Rxd7+ Kg8 37.Rg1+ Kh8 38.Rd8+ Kh7 39.Rd7+ Kh8 40.Rd8+ Kh7 41.Rd7+ Kh8
1/2-1/2
[[code]]

==WCCC 2008==
|| [[image:cluster-toga-vs-hiarcs.JPG width="640" link="http://www.czyzewski.org/sebi/WCCC-Beijing-2008/"]] ||
|| [[WCCC 2008]], round 1, [[Harvey Williamson]] and [[Timo Haupt|Timo Klaustermeyer]], [[Cluster Toga]] - [[Hiarcs]] <ref>[[http://www.czyzewski.org/sebi/WCCC-Beijing-2008/|Index of /sebi/WCCC-Beijing-2008]] pictures by [[Sebastian Böhme]]</ref> <ref>[[http://www.game-ai-forum.org/icga-tournaments/round.php?tournament=178&round=1&id=3|Beijing 2008 - Chess - Round 1 - Game 3 (ICGA Tournaments)]]</ref> ||
[[code]]
[Event "WCCC 2008"]
[Site "Beijing, China"]
[Date "2008.09.28"]
[Round "1"]
[White "Cluster Toga"]
[Black "Hiarcs"]
[Result "1/2-1/2"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be3 e5 7.Nb3 Be6 8.f3 Be7 
9.Qd2 O-O 10.O-O-O Nbd7 11.g4 b5 12.g5 Nh5 13.Kb1 Qc7 14.Nd5 Bxd5 15.exd5 Nb6 
16.Na5 Nxd5 17.Qxd5 Qxa5 18.Bd3 g6 19.Qb7 Rfe8 20.Be4 Qa4 21.Bc6 Rab8 22.Qa7 
Rec8 23.c3 Ng7 24.h4 Nf5 25.Bb6 Rcf8 26.Bf2 Rfd8 27.Ka1 Kg7 28.Be4 Rde8 29.h5
Qc4 30.Qxa6 Bxg5 31.Rhg1 Kf6 32.Ba7 Rbd8 33.hxg6 hxg6 34.Bb6 Rdb8 35.Qa7 Qe6 
36.Rd3 Reh8 37.Rgd1 Rbc8 38.Bb7 Rcf8 39.Bc7 Kg7 40.Be4 Be7 41.Bb6 Bd8 42.Bf2 
Bh4 43.Bb6 Bd8 44.Bf2 Bh4 45.Bb6 Bd8 1/2-1/2
[[code]]

=Authors=
<ref>[[http://www.game-ai-forum.org/icga-tournaments/program.php?id=568|Cluster Toga's ICGA Tournaments]]</ref>
||~ Author ||~ Role ||~ Parts ||
|| [[Kai Himstedt]] || engine programmer || ||
|| [[Ulf Lorenz]] || engine programmer || ||
|| [[Thomas Gaksch]] ||	engine programmer || [[Toga]] ||
|| [[Clemens Keck]] ||	[[Opening Book Authors|book author]]  || ||
|| [[Fabien Letouzey]] || engine programmer || [[Fruit]] ||
|| [[Timo Haupt|Timo Klaustermeyer]] || book author, operator || ||

=See also=
* [[Fruit]]
* [[GridChess]]
* [[GridProtector]]
* [[Toga]]

=Forum Posts=
* [[http://www.talkchess.com/forum/viewtopic.php?t=18725|Cluster Toga/Paderborn championship]] by ChessAddict, [[CCC]], January 03, 2008
* [[http://www.talkchess.com/forum/viewtopic.php?t=24083|Toga Cluster]] by [[Charles Roberson]], [[CCC]], September 29, 2008
* [[http://www.talkchess.com/forum/viewtopic.php?t=34780|Cluster Toga based on Fruit Source Code]] by [[Kai Himstedt]], [[CCC]], June 07, 2010
* [[http://www.talkchess.com/forum/viewtopic.php?t=46179|Please, Cluster Toga && Zochova]] by [[Arturo Ochoa]], [[CCC]], November 28, 2012 » [[Zochova]]
> [[http://www.talkchess.com/forum/viewtopic.php?topic_view=threads&p=494419&t=46179|Re: Please, Cluster Toga && Zochova]] by [[Jim Ablett]], [[CCC]], November 28, 2012

=External Links=
* [[http://www.game-ai-forum.org/icga-tournaments/program.php?id=568|Cluster Toga's ICGA Tournaments]]
* [[http://www.informatik.uni-hamburg.de/TIS/file-download/email-file.php|
Download - Cluster Toga 1.4b5c based on Fruit 2.1 UCI]]

=References= 
<references />
=What links here?= 
[[include page="Cluster Toga" component="backlinks" limit="60"]]
**[[Engines|Up one level]]**