Re: [computer-go] MoGo v.s. Kim rematch
On 22, Sep 2008, at 10:50 PM, Hideki Kato wrote: David Doshay: [EMAIL PROTECTED]: 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. Really previous Huygens used Ethernet? It's hard to believe... Hideki I thought so as well, but Olivier wrote to me: Begin forwarded message: From: Olivier Teytaud [EMAIL PROTECTED] Date: 6, September 2008 2:07:42 AM PDT To: David Doshay [EMAIL PROTECTED] Subject: Re: [computer-go] yet a mogo vs human game Hi David, ... 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. ... Best regards, Olivier So, perhaps Huygens has both and they were not using it last time, or maybe they brought Huygens up with E-net and then upgraded. But Mogo did not use it for the Portland exhibition, but did use infiniband for the rematch. Cheers, David ___ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/
Re: [computer-go] MoGo v.s. Kim rematch
David, I've found a description that Infiniband was improved from 2 x 4X IB (20 Gbps) to 8 x 8X IB (160 Gbps) on Jun 2008 at the bottom of 6th page of a pdf about Huygens system: https://www.os3.nl/_media/2007-2008/courses/inr/week7/sne_20080320_walter.pdf I guess that is the better hardware Olivier wrote. Hideki David Doshay: [EMAIL PROTECTED]: On 22, Sep 2008, at 10:50 PM, Hideki Kato wrote: David Doshay: [EMAIL PROTECTED]: 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. Really previous Huygens used Ethernet? It's hard to believe... Hideki I thought so as well, but Olivier wrote to me: Begin forwarded message: From: Olivier Teytaud [EMAIL PROTECTED] Date: 6, September 2008 2:07:42 AM PDT To: David Doshay [EMAIL PROTECTED] Subject: Re: [computer-go] yet a mogo vs human game Hi David, ... 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. ... Best regards, Olivier So, perhaps Huygens has both and they were not using it last time, or maybe they brought Huygens up with E-net and then upgraded. But Mogo did not use it for the Portland exhibition, but did use infiniband for the rematch. Cheers, David ___ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/ -- [EMAIL PROTECTED] (Kato) ___ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/
Re: [computer-go] MoGo v.s. Kim rematch
On Mon, Sep 22, 2008 at 1:21 PM, Łukasz Lew [EMAIL PROTECTED] wrote: Hi, On Mon, Sep 22, 2008 at 17:58, Jason House [EMAIL PROTECTED] wrote: On Sep 22, 2008, at 7:59 AM, Magnus Persson [EMAIL PROTECTED] wrote: The results of the math are most easilly expressed in terms of inverse variance (iv=1/variance) Combined mean = sum( mean * iv ) Combined iv = sum( iv ) I'll try to do a real write-up if anyone is interested. I am very interested. :) Lukasz Attached is a quick write up of what I was talking about with some math. PS: Any tips on cleanup and making it a mini publication would be appreciated. I've never published a paper before. Would this be too small? RAVE.doc Description: MS-Word document ___ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/
Re: [computer-go] MoGo v.s. Kim rematch
Attached is a quick write up of what I was talking about with some math. PS: Any tips on cleanup and making it a mini publication would be appreciated. I've never published a paper before. Would this be too small? Better add an abstract, but what I missed most was bibliography. []'s Douglas Drumond - Computer Engineering FEEC/IC - Unicamp ___ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/
Re: [computer-go] MoGo v.s. Kim rematch
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/computer-go@computer-go.org/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 computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/
