Changes

=DetailsFeatures= Zeta is written in [[C]] (host) and [[OpenCL]] (device). The host handles the IO, but all chess related computations are done in via OpenCL (run-time-compilation) on the device.

Zeta v099 is a port of [[Zeta Dva]] to OpenCL, with classic parallel [[Alpha-Beta]] search, therefore 64 gpu -threads are coupled to one worker, used during move generation, move picking and evaluation in parallel.

Zeta v097 and v098 were designed to run thousands of independent [[Thread|threads]] on a [[GPU]], therefore they store the expanded search game tree via an randomized parallel [[Best-FirstMinimax Search]]-MiniMax search in [[Memory|memory]] . =NPS and Playing Strength= * Zeta 099k, AMD Radeon R9 Fury X, 256 workers, ~8 Mnps* Zeta 099k, Nvidia GeForce GTX 750, 16 workers, ~800 Knps, CCRL Elo est. 1932* Zeta 099k, Nvidia GeForce GTX 750, 1 worker, ~45 Knps, CCRL Elo est. 1738* Zeta 098c, Nvidia GeForce GTX 480, 4096 threads, ~5 Mnps, CCRL Elo est. 2000* Zeta 097x, Nvidia GeForce GTX 480, 4096 threads, ~5 Mnps, CCRL Elo est. 1800

* [http://www.talkchess.com/forum/viewtopic.php?t=62288 ZetaOpenCL 098ew64 running on Windows OS40493 LIFO stack based parallel processing?] by [[Srdja Matovic]], [[CCC]], September 22, 2011* [http://www.talkchess.com/forum/viewtopic.php?topic_view=threads&p=442052&t=41853 Possible Search Algorithms for GPUs?] by [[Srdja Matovic]], [[CCC]], January 07, 2012 <ref>[[Yaron Shoham]], [[Sivan Toledo]] ('''2002'''). ''[https://www.sciencedirect.com/science/article/pii/S0004370202001959 Parallel Randomized Best-First Minimax Search]''. [https://en.wikipedia.org/wiki/Artificial_Intelligence_(journal) Artificial Intelligence], Vol. 137, Nos. 1-2</ref> <ref>[[Alberto Maria Segre]], [[Sean Forman]], [[Giovanni Resta]], [[Andrew Wildenberg]] ('''2002'''). ''[https://www.sciencedirect.com/science/article/pii/S000437020200228X Nagging: A Scalable Fault-Tolerant Paradigm for Distributed Search]''. [https://en.wikipedia.org/wiki/Artificial_Intelligence_%28journal%29 Artificial Intelligence], Vol. 140, Nos. 1-2</ref>* [http://www.talkchess.com/forum/viewtopic.php?t=44165 Help with Best-First Select-Formula] by [[Norbert Raimund LeisnerSrdja Matovic]], [[CCC]], November 27June 23, 20162012* [http://www.talkchess.com/forum/viewtopic.php?t=63719 Zeta v099a46974 Kogge Stone, Vector Based] by [[Srdja Matovic]], [[CCC]], January 22, 2013 » [[Kogge-Stone Algorithm]] <ref>[https://en.wikipedia.org/wiki/Parallel_Thread_Execution Parallel Thread Execution from Wikipedia]</ref> <ref>NVIDIA Compute PTX: Parallel Thread Execution, ISA Version 1.4, March 31, 2009, gpu [https://www.nvidia.com/content/CUDA-ptx_isa_1.4.pdf pdf]</ref>* [http://www.talkchess.com/forum/viewtopic.php?t=60386 GPU chess update, local memory...] by [[Srdja Matovic]], [[CCC]], April 11June 06, 20172016* [http://www.talkchess.com/forum3/viewtopic.php?f=27&t=72684 RMO - Randomized Move Order - yet another Lazy SMP derivate] by [[Srdja Matovic]], [[CCC]], December 30, 2019 » [[Lazy SMP]] ==2020 ...==* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=71084 Looking for someone to test 76986 Zeta v099l with NNUE on RTX 2080 TI, or similar, gpuGPU?] by [[Srdja Matovic]], [[CCC]], June 24March 31, 2021 » [[NNUE]], 2019[[GPU]]

* [https://githubgitlab.com/smatovic/Zeta GitHub GitLab - smatovic/Zeta: Experimental chess engine written in OpenCL]

[[Category:GPLMIT]]