Search found 90 matches

by yorkman
Thu Apr 09, 2020 2:37 am
Forum: Computer Chess Club: General Topics
Topic: 237 Mn/s for Stockfish on an 2xEPYC 7742
Replies: 57
Views: 7760

Re: 237 Mn/s for Stockfish on an 2xEPYC 7742

Here are my results with SF9, the same as in the benchmark from this thread: ./stockfish-9-popcnt bench 1024 256 26 Total time (ms) : 519221 Nodes searched : 45414888487 Nodes/second : 87467356 Look at the Total time! Took forever to finish this benchmark in latest CentOS 8.1. Temps were fine in Win...
by yorkman
Thu Apr 09, 2020 1:32 am
Forum: Computer Chess Club: General Topics
Topic: 237 Mn/s for Stockfish on an 2xEPYC 7742
Replies: 57
Views: 7760

Re: 237 Mn/s for Stockfish on an 2xEPYC 7742

Thanks, but what version is that exactly? Just stockfish 9? So no dev version? Can one still actually download SF9? Here's what I just got in CentOS 8.1 with SMT/HT enabled and 8 dimms populated with 2166MHz ram (8 GB each): Total time (ms) : 299493 Nodes searched : 19609843392 Nodes/second : 654768...
by yorkman
Thu Apr 09, 2020 12:37 am
Forum: Computer Chess Club: General Topics
Topic: 237 Mn/s for Stockfish on an 2xEPYC 7742
Replies: 57
Views: 7760

Re: 237 Mn/s for Stockfish on an 2xEPYC 7742

So I just finished building my new 2x Epyc 7742 system on a Supermicro H11DSi-NT but I can't figure out why I only get about 80,000 kN/s in Windows with SMT/HT enabled or disabled. Only Linux is better as I get double that, 165,000 kN/s. If I disabled SMT/HT there's no difference. Anyone have this k...
by yorkman
Tue Jan 14, 2020 7:21 pm
Forum: Computer Chess Club: General Topics
Topic: 237 Mn/s for Stockfish on an 2xEPYC 7742
Replies: 57
Views: 7760

Re: 237 Mn/s for Stockfish on an 2xEPYC 7742

Were those SF and asmFish results running with HT enabled? And there's several benchmarks that shows these same engines on a dual 7742 get only about 196 Mn/s: https://openbenchmarking.org/result/1910176-AS-2XAMDEPYC12 Then there's STH's benchmark on a different system (Daytona_X) and got 275 Mn/s f...
by yorkman
Tue Jan 14, 2020 5:45 pm
Forum: Computer Chess Club: General Topics
Topic: Syzygy on RAM Drive
Replies: 19
Views: 4556

Re: Syzygy on RAM Drive

Is it possible to store my 3 syzygy paths in ram on Windows, such as Win'2012 R2? I'm currently using Syzygy from SSD.

If it's possible, how do I do it? If it matters my gui is Aquarium.
by yorkman
Thu Feb 14, 2019 6:53 am
Forum: Computer Chess Club: General Topics
Topic: Sting Sf 13
Replies: 17
Views: 4290

Re: Sting Sf 13

Analysis by Sting 13 based on Stockfish 2.1.1 64bit:
Could someone enlighten me by explaining why would Sting 13 be based on such an old version of SF? 2? Why not 10 or at least 9?
by yorkman
Mon Aug 13, 2018 6:38 pm
Forum: Computer Chess Club: General Topics
Topic: older version of Brainfish
Replies: 16
Views: 3255

Re: older version of Brainfish

I think months ago I saw someone report that LP (large pages) don't work with BrainFish anymore. I haven't used it for a while and yesterday I downloaded the latest source and compiled it on my Windows box and sure enough it's still broken. I tried the pre-compiled version as well and same issue. Al...
by yorkman
Mon Jun 04, 2018 9:33 pm
Forum: Computer Chess Club: General Topics
Topic: SF memory hard faults issue
Replies: 5
Views: 1602

Re: SF memory hard faults issue

Sorry don't know much about it. Had not even heard of the term 'memory hard fault' before. Usually the term 'Page fault' is used I believe. Windows 10 does not have this in its Task Manager even, at least could not find it. No report of 'memory hard faults' anywhere so no way to measure. The Task M...
by yorkman
Mon Jun 04, 2018 9:30 pm
Forum: Computer Chess Club: General Topics
Topic: YLCET is no more!
Replies: 27
Views: 8435

Re: YLCET is no more!

Leo wrote:
Fri Apr 06, 2018 10:30 pm
What hardware is being used for the tournament? What does YLCET stand for?
This response will be well overdue but anyway...YLCET stands for Yorkman's Live Chess Engine Tournament. The hardware is dual Intel Xeon E5-2696v3.
by yorkman
Sun May 27, 2018 6:10 pm
Forum: Computer Chess Club: General Topics
Topic: SF memory hard faults issue
Replies: 5
Views: 1602

SF memory hard faults issue

Is it just me on does SF and its derivatives have memory hard fault issues? In windows 2012 for example on a dual e5-2699v3, looking at the Resource Monitor I have full bars all the time (around 400 hard faults) just like the cpu usage monitor. That's crazy! I have 64 GB of ram and I'm using 32 GB o...