Search found 628 matches

by smatovic
Mon Jul 15, 2019 7:18 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Lazy-evaluation of futures for parallel work-efficient Alpha-Beta search
Replies: 39
Views: 3220

Re: Lazy-evaluation of futures for parallel work-efficient Alpha-Beta search

Here is some amusing math that deeply annoys me. * Occupancy 16/40 per Compute Unit x 64 Compute Units (Vega64) x 64 threads per wavefront == 65,536 hardware threads. Occupany 40/40 ( 163,840 threads) is overkill and probably too difficult to achieve. Occupancy 4/40 (16,384 threads) won't have any ...
by smatovic
Sat Jul 13, 2019 6:16 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: CCRL 40/40, 40/4 and FRC lists updated (15th June 2019)
Replies: 22
Views: 1869

Re: CCRL 40/40, 40/4 and FRC lists updated (15th June 2019)

Working fine so far.zeta.png Hi again, not sure if you are already testing Zeta, just want to let you know, that I will probably do another release next weekend, to fix some issues with parallel search scaling above 32 workers.... -- Srdja Thanks, I'll wait for this new version. I did run some game...
by smatovic
Sat Jul 13, 2019 6:16 am
Forum: Computer Chess Club: General Topics
Topic: New engine releases 2019
Replies: 264
Views: 44392

Re: New engine releases 2019

Zeta v099m released as source and Linux/Windows 64 bit binary: https://github.com/smatovic/Zeta/releases changelog: Zeta (099m) alpha; urgency=medium * patch for ABDADA parallel search * disabled RMO parallel search * removed max device memory limitation * mods in time control * cleanups * * Zeta 09...
by smatovic
Thu Jul 11, 2019 8:35 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Are there any benchmarks for LC0 on the new AMD 7nm GPUs?
Replies: 9
Views: 460

Re: Are there any benchmarks for LC0 on the new AMD 7nm GPUs?

Yes, it's sad. Apple recently announced to push their own Metal API instead of OpenCL, and I think it is getting even worse with Intel entering the discrete gpu market in 2020/2021, they already push their OneAPI thing, one API to rule them all... I hope the vendors will at least support OpenCL 1.x ...
by smatovic
Tue Jul 09, 2019 2:21 pm
Forum: Computer Chess Club: General Topics
Topic: buying a new computer
Replies: 165
Views: 4922

Re: buying a new computer

Someone ever considered a refurbished workstation? I got a HP Z620, I7, 2.8-3.5Ghz, 20 cores, 40 threads, 16Gb ram, 500Gb SSD, 2 x 1 TB harddisk for under 1000 euro with 2 year guarantee. ...unless you have your own power plant and running 24/7, I guess it pays off to invest in CPUs/GPUs based on s...
by smatovic
Tue Jul 09, 2019 8:56 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Are there any benchmarks for LC0 on the new AMD 7nm GPUs?
Replies: 9
Views: 460

Re: Are there any benchmarks for LC0 on the new AMD 7nm GPUs?

I am guessing that the Nvida cards win, because of the single cycle matrix operations Hmm, according to the web AMD still works on proper OpenCL drivers for Navi: https://www.anandtech.com/show/14618/the-amd-radeon-rx-5700-xt-rx-5700-review/13 https://www.phoronix.com/scan.php?page=article&item=rad...
by smatovic
Tue Jul 09, 2019 8:40 am
Forum: Computer Chess Club: General Topics
Topic: buying a new computer
Replies: 165
Views: 4922

Re: buying a new computer

... My next machine will definitely be a modern one. I might get a 3950x, with a couple 2080 cards, but more likely the next threadripper or one of the commercial systems. Ah, another note, the Ryzens seem to have only 16 PCIe lanes for GPUs, considering PCIe 4.0 and two GPUs this could be enough f...
by smatovic
Tue Jul 09, 2019 8:22 am
Forum: Computer Chess Club: General Topics
Topic: buying a new computer
Replies: 165
Views: 4922

Re: buying a new computer

... My next machine will definitely be a modern one. I might get a 3950x, with a couple 2080 cards, but more likely the next threadripper or one of the commercial systems. Yea, keep in mind that AMD Ryzen based systems have only 2 memory channels, compared to 4 for Threadripper, and 8 for Epyc serv...
by smatovic
Tue Jul 09, 2019 8:18 am
Forum: Computer Chess Club: General Topics
Topic: buying a new computer
Replies: 165
Views: 4922

Re: buying a new computer

Someone ever considered a refurbished workstation? I got a HP Z620, I7, 2.8-3.5Ghz, 20 cores, 40 threads, 16Gb ram, 500Gb SSD, 2 x 1 TB harddisk for under 1000 euro with 2 year guarantee. ...unless you have your own power plant and running 24/7, I guess it pays off to invest in CPUs/GPUs based on s...
by smatovic
Tue Jul 09, 2019 8:05 am
Forum: Computer Chess Club: General Topics
Topic: buying a new computer
Replies: 165
Views: 4922

Re: buying a new computer

... My next machine will definitely be a modern one. I might get a 3950x, with a couple 2080 cards, but more likely the next threadripper or one of the commercial systems. Yea, keep in mind that AMD Ryzen based systems have only 2 memory channels, compared to 4 for Threadripper, and 8 for Epyc serv...