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Re: 7-men Syzygy attempt
Posted: Mon Aug 20, 2018 11:39 pm
by Dann Corbit
Sesse wrote: ↑Mon Aug 20, 2018 11:17 pm
Dann Corbit wrote: ↑Mon Aug 20, 2018 10:10 pm
Instead of 8 man files, I think the next logical project is the 7 man DTM with Ronald's new format.
Or 6-man DTM50, for that matter.
Actually, the next logical project is getting the probing code into Stockfish and Fathom.
Cfish can already do it, so it should not be a very big step to incorporate in other programs, since there is a working example.
Edit:
I guess they are already incorporated into Stockfish.
Here is the UCI setting for probes in the current code:
option name SyzygyProbeLimit type spin default 7 min 0 max 7
Re: 7-men Syzygy attempt
Posted: Tue Aug 21, 2018 12:19 am
by Sesse
Ah, I see the official Stockfish has been patched now.
I guess the code is independent from my patch, since it doesn't take in the Robin Hood hashing nor overflow trick, and thus needs a four times as big hash table
Re: 7-men Syzygy attempt
Posted: Tue Aug 21, 2018 12:21 am
by Dann Corbit
Sesse wrote: ↑Tue Aug 21, 2018 12:19 am
Ah, I see the official Stockfish has been patched now.
I guess the code is independent from my patch, since it doesn't take in the Robin Hood hashing nor overflow trick, and thus needs a four times as big hash table
You might submit your patch to the SF group effort.
It sounds like it would be very helpful.
Is it included in the Cfish version?
Re: 7-men Syzygy attempt
Posted: Tue Aug 21, 2018 6:31 am
by Michel
duncan wrote: ↑Mon Aug 20, 2018 10:58 pm
Contrary to previous versions of the bases which took on the names of their creators, de Man chose to call them Syzygy (pronounced Sih-Zih-Gee), which means a pair of connected or corresponding things.
Recall that RdM is a mathematician. A syzygy is in fact a specific (somewhat advanced) mathematical concept:
https://en.wikipedia.org/wiki/Hilbert%2 ... relations)
Re: 7-men Syzygy attempt
Posted: Tue Aug 21, 2018 8:55 am
by whereagles
Dann Corbit wrote: ↑Mon Aug 20, 2018 7:41 pm
I hope that this effort will become very famous. It is really something incredible.
dunno about fame, but syzygy site will sure ramp up its visits
Re: 7-men Syzygy attempt
Posted: Tue Aug 21, 2018 8:56 am
by whereagles
Michel wrote: ↑Tue Aug 21, 2018 6:31 am
Recall that RdM is a mathematician. A syzygy is in fact a specific (somewhat advanced) mathematical concept:
think he's retired.. but might still want to write a paper on the subject
Re: 7-men Syzygy attempt
Posted: Tue Aug 21, 2018 10:45 am
by Sesse
Dann Corbit wrote: ↑Tue Aug 21, 2018 12:21 am
You might submit your patch to the SF group effort.
It sounds like it would be very helpful.
I don't actually know how. I guess maybe I could send a pull request on GitHub?
Dann Corbit wrote: ↑Tue Aug 21, 2018 12:21 am
Is it included in the Cfish version?
Not that I know of.
Re: 7-men Syzygy attempt
Posted: Tue Aug 21, 2018 10:46 am
by Sesse
So there we are… 60 TB disk ordered. (36 usable TB after RAID-6 and accounting for that 10^12 bytes is less than 2^40 bytes.)
Re: 7-men Syzygy attempt
Posted: Tue Aug 21, 2018 12:05 pm
by Jesse Gersenson
Sesse wrote: ↑Tue Aug 21, 2018 10:46 am
So there we are… 60 TB disk ordered. (36 usable TB after RAID-6 and accounting for that 10^12 bytes is less than 2^40 bytes.)
What's the model number, I may get a set.
Re: 7-men Syzygy attempt
Posted: Tue Aug 21, 2018 12:26 pm
by Sesse
Seagate Enterprise Exos X10, 10 TB. Six of them.