Re: Chess.com 2018 computer chess championship
Posted: Sun Aug 19, 2018 9:22 pm
How do you know that if there are issues you'd be aware of them? It's not easy to see issues depending what the issues are.
How do you know that if there are issues you'd be aware of them? It's not easy to see issues depending what the issues are.
Indeed, this shows the incompetence of the organizers by not understanding the difference between a logical and a physical core.
.... STOP PONDERING ON CCLS !!!!! .....CMCanavessi wrote: ↑Sun Aug 19, 2018 6:46 am I think using ponder is a joke, they should give 90+ threads to each engine with no ponder, and it would be way better.
Nay Lin Tun wrote: ↑Sun Aug 19, 2018 5:47 am
1. 4x V 100 for Leela vs 48 cores ( GPU/CPU ratio will be 3.6 times in favor for Leela than TCEC, approximately + 90 elo)
Makes sense, but I'm wondering why they didn't just specify no pondering in matches between engines playing on the regular server (or between multiple engines on the GPU server), but pondering allowed between engines playing on different servers.jhellis3 wrote: ↑Sun Aug 19, 2018 10:56 pm Well, all the other engines won't be sharing resources while playing LC0, so she will face engines with 40-something "real" threads with no memory or disk contention. On the other hand, while the conventional engines will face weaker competition than Leela, they will also be weaker when doing so...
The upshot is that the games vs LC0 should be of higher overall quality.
With ponder ON, AB engines will become much stronger when facing against Leela because this time no other engine is utilizing half of the resource. It means AB engine strength is not constant throughout the tournament. Not a good way to measure relative strength IMO. The problem is easily fixed by turning the ponder OFF though.jhellis3 wrote: ↑Sun Aug 19, 2018 10:56 pm Well, all the other engines won't be sharing resources while playing LC0, so she will face engines with 40-something "real" threads with no memory or disk contention. On the other hand, while the conventional engines will face weaker competition than Leela, they will also be weaker when doing so...
The upshot is that the games vs LC0 should be of higher overall quality.
I just watched an Ethereal vs Shredder game. Ethereal was pulling 30mnps throughout.Jhoravi wrote: ↑Mon Aug 20, 2018 4:56 amWith ponder ON, AB engines will become much stronger when facing against Leela because this time no other engine is utilizing half of the resource. It means AB engine strength is not constant throughout the tournament. Not a good way to measure relative strength IMO. The problem is easily fixed by turning the ponder OFF though.jhellis3 wrote: ↑Sun Aug 19, 2018 10:56 pm Well, all the other engines won't be sharing resources while playing LC0, so she will face engines with 40-something "real" threads with no memory or disk contention. On the other hand, while the conventional engines will face weaker competition than Leela, they will also be weaker when doing so...
The upshot is that the games vs LC0 should be of higher overall quality.
I believe this is outdated information. There's been a fair amount of testing over the past couple of years (as well as improvements to Lazy SMP implementations) that show CPU engines have good scaling as far as anyone has been able to test:
There's no indication that the CPU engines will be given full access to the anemic CPU machine during games against Leela. The official documentation simply states the CPU engines will be limited to 46 threads and 8192 MB of hash without mention of any exceptions.jhellis3 wrote: ↑Sun Aug 19, 2018 10:56 pm Well, all the other engines won't be sharing resources while playing LC0, so she will face engines with 40-something "real" threads with no memory or disk contention. On the other hand, while the conventional engines will face weaker competition than Leela, they will also be weaker when doing so...
The upshot is that the games vs LC0 should be of higher overall quality.
Fortunately, that wasn't the point I was making ....There's no indication that the CPU engines will be given full access to the anemic CPU machine during games against Leela.