>>> It was 800, just like last time, but the networking had been upgraded >>> from ethernet to infiniband. Olivier said that this should have been a >>> good improvement because he felt that communication overhead was >>> significant.
I thought Olivier had previously said there was very little overhead. E.g.: http://computer-go.org/pipermail/computer-go/2008-May/015068.html http://www.mail-archive.com/[email protected]/msg07953.html I took this 95% to mean that giving Mogo 760 (800x0.95) times the thinking time on a single core would be the same strength as Mogo on 800 cores. Assuming a rule of thumb that doubling the playouts is worth one rank (*), increasing network speed will surely have very little effect on the strength? Darren *: That is from memory of discussion here; I hope somebody will correct me with a more accurate thumb. >> We will have at least the same number of cores, probably more, and we >> will very likely have a better hardware - >> the infiniband network should be available, and this makes a big >> difference. -- Darren Cook, Software Researcher/Developer http://dcook.org/mlsn/ (English-Japanese-German-Chinese-Arabic open source dictionary/semantic network) http://dcook.org/work/ (About me and my work) http://dcook.org/blogs.html (My blogs and articles) _______________________________________________ computer-go mailing list [email protected] http://www.computer-go.org/mailman/listinfo/computer-go/
