Search found 62 matches

by 64_bit_checkers_engine
Mon Feb 28, 2011 18:54
Forum: Draughts, Computer, Internet
Topic: Intel's 160-threaded machine (8 CPUS x 10 cores x 2 threads)
Replies: 4
Views: 3597

Re: Intel's 160-threaded machine (8 CPUS x 10 cores x 2 threads)

I guess that the parallel search scales in terms of nodes/second. But im not sure if the time to depth, compared with a non-parallel program, scales in the same way. Normally you will encounter saturation when increasing the number of threads... Bert Yes Bert, when I ran K.R.I. with 8 threads, it w...
by 64_bit_checkers_engine
Mon Feb 21, 2011 03:11
Forum: Draughts, Computer, Internet
Topic: Intel's 160-threaded machine (8 CPUS x 10 cores x 2 threads)
Replies: 4
Views: 3597

Re: Intel's 160-threaded machine (8 CPUS x 10 cores x 2 threads)

I'm afraid it exceeds my budget, but anyway.... The positive news, a 8P DB in less then 1 week :) Hi Bert, Wow, that is something! Ed tells me that the 8p in I. Draughts is twice the size of the 10p in regular 8x8 checkers. That must have taken a long time to compute! And the negative..... I'm not ...
by 64_bit_checkers_engine
Sun Feb 20, 2011 23:36
Forum: Draughts, Computer, Internet
Topic: Perft(20) = Node Count Plus (20)
Replies: 0
Views: 1402

Perft(20) = Node Count Plus (20)

I decided to run Perft(20) using my Node Count Plus program. This was a non-parallel version of perft(), with no hash table. It was run on a single core. http://www.liquidnitrogenoverclocking.com/images/perft%2820%29.jpg It took 16.5 days averaging 52.5 million nodes per second. I think it is safe t...
by 64_bit_checkers_engine
Sun Feb 20, 2011 20:34
Forum: Draughts, Computer, Internet
Topic: Playing around with Liquid Nitrogen, 6.0 GHz on AMD 1100T
Replies: 1
Views: 2438

Re: Playing around with Liquid Nitrogen, 6.0 GHz on AMD 1100T

Setting up the pot to pour the Liquid Nitrogen into... http://www.liquidnitrogenoverclocking.com/images/LN2_1100T/setting_up.jpg Starting to accumulate frost at about -100 Celsius on the way down to way below -200 Celsius http://www.liquidnitrogenoverclocking.com/images/LN2_1100T/thats_cold.jpg The ...
by 64_bit_checkers_engine
Sun Feb 20, 2011 12:54
Forum: Draughts, Computer, Internet
Topic: Intel's 160-threaded machine (8 CPUS x 10 cores x 2 threads)
Replies: 4
Views: 3597

Intel's 160-threaded machine (8 CPUS x 10 cores x 2 threads)

http://www.tomshardware.com/news/Xeon-westmere-EX-Nehalem-EX-10-cores-160-threads,12230.html#xtor=RSS-181 Thursday an Intel spokesperson said that its upcoming 10-core "Westmere-EX" Xeon processor (pdf) will launch during the first half of 2011. The chip follows Intel's 2010 release of the Nehalem-...
by 64_bit_checkers_engine
Sun Feb 20, 2011 02:00
Forum: Draughts, Computer, Internet
Topic: Playing around with Liquid Nitrogen, 6.0 GHz on AMD 1100T
Replies: 1
Views: 2438

Playing around with Liquid Nitrogen, 6.0 GHz on AMD 1100T

I filled up my dewar with Liquid Nitrogen today, to work on an AMD 1100T research project. The goal was to break 6.0 GHz (which was barely achieved) and compare some benchmarks against some of the 5.0 GHz+ Sandy Bridge systems we have. I will post some pictures in a little while. It looks like a sin...
by 64_bit_checkers_engine
Sat Feb 19, 2011 03:09
Forum: Draughts, Computer, Internet
Topic: Kingsrow International + endgame databases is available
Replies: 43
Views: 18721

Re: Kingsrow International + endgame databases is available

I'm doing a complete rewrite, from a blank project in Visual Studio, so I am quite a ways distant. When the DTW DB10 project launches (and hopefully for the last time) I am going to revisit the new coding project. The 64-bit move generator needs a new hash table scheme, so this prompted the re-write...
by 64_bit_checkers_engine
Fri Feb 18, 2011 22:40
Forum: Draughts, Computer, Internet
Topic: Computer Draughts 2011
Replies: 27
Views: 8664

Re: Computer Draughts 2011

I have two systems now, each over 5.0 GHz. My YouTube channel where you can see them:

http://www.youtube.com/user/LiquidNitro ... nSG29RIrbg

And here is my 12-core box at 4.5 GHz (Dual Xeon X5680 Westmere)

Image
by 64_bit_checkers_engine
Fri Feb 18, 2011 20:49
Forum: Draughts, Computer, Internet
Topic: Kingsrow International + endgame databases is available
Replies: 43
Views: 18721

Re: Kingsrow International + endgame databases is available

Ed Gilbert wrote:Of course I don't tell her that it is only enough money to feed my hobby, and she doesn't read this forum...
Ed,

You have to help me write a parallel search for my program, or I am telling your wife.

:)
by 64_bit_checkers_engine
Mon Sep 06, 2010 01:51
Forum: Draughts, Computer, Internet
Topic: 8 pieces endgame database
Replies: 99
Views: 22751

Re: 8 pieces endgame database

Well I just finished building an overclocked 5.0 GHz Intel Core i7-920. It is now perfectly stable after having run Prime95 for 3 days continuously on all cores (8 threads total). Interestingly, it is about 1.7 times as fast as my 3.9 GHz i7-860 at running my 6-piece Distance-To-Win database in the ...
by 64_bit_checkers_engine
Thu Aug 12, 2010 00:57
Forum: Draughts, Computer, Internet
Topic: 32 cores, 512 GB of RAM!
Replies: 3
Views: 2493

32 cores, 512 GB of RAM!

Anyone need a more advanced system, like this 32 core system with up to 512 GB of RAM?

http://cache-www.intel.com/cd/00/00/44/ ... 444987.pdf

I wonder what Kingsrow International would do on that system?

:)
by 64_bit_checkers_engine
Tue Aug 10, 2010 00:54
Forum: Draughts, Computer, Internet
Topic: Kingsrow International + endgame databases is available
Replies: 43
Views: 18721

Re: Kingsrow International + endgame databases is available

Well you can't be giving this stuff away for free, heck, your electric bill probably won't be paid until you get 10 orders for it.

:)
by 64_bit_checkers_engine
Tue Aug 10, 2010 00:32
Forum: Draughts, Computer, Internet
Topic: Flits Dxp Server
Replies: 65
Views: 31906

Re: Flits Dxp Server

There a way to watch the games as a spectator?
by 64_bit_checkers_engine
Sat Aug 07, 2010 15:19
Forum: Draughts, Computer, Internet
Topic: Endgame database benchmarks
Replies: 42
Views: 15466

Re: Endgame database benchmarks

With an SSD, is it more interesting to read less than 4Ko ? more than 4Ko ? Hi, I have a 128 GB SSD on my 3.9 GHz Intel Core i7-860 (with 8 GB of DDR3 RAM). I will run a read/write test on it a little later. As for the 4K reads, I don't think hard disk speed matters. Whenever you call fread() with ...
by 64_bit_checkers_engine
Sat Jul 31, 2010 19:14
Forum: Draughts, Computer, Internet
Topic: Node Count Plus (19)
Replies: 0
Views: 1651

Node Count Plus (19)

PERFORMING NODE COUNT THROUGH DEPTH 19 ================================================================= --------------------------------- Node Count Through 19 Plies Completed |---| w |---| w |---| |---| | --------------------------------- Nodes from move # 1 = 2517202147314 | w |---| w |---| |---...