> Do you plan to sell Rybka 5 under Chessbase with a new powerful book?
Yes and yes (but it's not a concrete plan yet).
> How many cores has the latest Rybka Cluster?
Lukas can give you the exact amount. It's around 300.
i) Will Rybka 5 be geared for multi-socket (NUMA) machines like Houdini 2 Pro?
ii) Will you release a single core version for IDeA use?
iii) In Rybka's development a couple of years ago you stated that you spent roughly 2/3 of your time on search and 1/3 on evaluation. Has that proportion changed or stayed the same?
ii) Yes (100% sure).
iii) Maybe it's more like 3/4 search and 1/4 eval now. It's hard to say for sure, a lot of my work is not specific to either.
Will it contain Learning feature like critter ?
Anyways I have heard that Rybka's kN/sec output was "deliberately obfuscated". I thought the reasoning was that you could really only compare two identical engines to get an accurate benchmark anyways, so Rybka's node count was made the way it was so it would be more convenient for development. Clarification?
Rybka's node counts are also adjusted to take into account for multiprocessing inefficiency. If you have two Rybka processes and they each search 100 nodes, Rybka will report around 170 nodes searched rather than 200, because the value of the combined work is about the same as a single 170-node search. I don't know how other engines handle this.
> With H2, NPS increases almost exactly linearly out to 12 (16?) nodes...
So then you need to allow for a 20% loss of efficiency per doubling of cores.
Seems like Vas has built this 20% into his node counter.
Apparently your hardcore fans are quite disappointed that it's as simple as that.
> Apparently your hardcore fans are quite disappointed that it's as simple as that.
I guess Alan expected me to account for some other things like interprocess latencies.
Will you commit to a bugfix update! Do we get the "showstopper" option thrown in again? Just for old times sake.
It was a close call, but ...
I see you got your gold crown after all.
I think all the ideas are good to be honest. Uly is great at design ideas.
Oh, and I never got the bronze or silver crowns because when they were implemented I jumped to gold directly. I was thinking if I could have a second forum account (with permission) to go for them.
25000 posts - 2 Gold crowns
50000 posts - 3 Gold crowns
75000 posts - 4 Gold crowns
100000 posts - 5 Gold crowns
20,000 Gold + Bronze
25,000 Gold + Silver
30,000 Gold + Gold
35,000 Gold + Gold + Bronze
40,000 Gold + Gold + Bronze
45,000 Gold + Gold + Silver
50,000 Gold + Gold + Gold
55,000 Gold + Gold + Gold + Bronze
60,000 Gold + Gold + Gold + Silver
65,000 Gold + Gold + Gold + Gold
70,000 Gold + Gold + Gold + Gold + Bronze
75,000 Gold + Gold + Gold + Gold + Silver
80,000 Gold + Gold + Gold + Gold + Gold
Though it doesn't end on the mighty 100k.
(I hope this isn't KISS )
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