Discussion of chess software programming and technical issues.
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Dann Corbit
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by Dann Corbit » Mon Aug 20, 2018 9:39 pm
Sesse wrote: ↑Mon Aug 20, 2018 9:17 pm
Dann Corbit wrote: ↑Mon Aug 20, 2018 8:10 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
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
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Sesse
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by Sesse » Mon Aug 20, 2018 10:19 pm
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

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Dann Corbit
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by Dann Corbit » Mon Aug 20, 2018 10:21 pm
Sesse wrote: ↑Mon Aug 20, 2018 10:19 pm
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?
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
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Michel
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by Michel » Tue Aug 21, 2018 4:31 am
duncan wrote: ↑Mon Aug 20, 2018 8:58 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)
Ideas=science. Simplification=engineering.
Without ideas there is nothing to simplify.
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whereagles
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by whereagles » Tue Aug 21, 2018 6:55 am
Dann Corbit wrote: ↑Mon Aug 20, 2018 5:41 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

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whereagles
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by whereagles » Tue Aug 21, 2018 6:56 am
Michel wrote: ↑Tue Aug 21, 2018 4:31 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

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Sesse
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by Sesse » Tue Aug 21, 2018 8:45 am
Dann Corbit wrote: ↑Mon Aug 20, 2018 10:21 pm
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: ↑Mon Aug 20, 2018 10:21 pm
Is it included in the Cfish version?
Not that I know of.
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Sesse
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by Sesse » Tue Aug 21, 2018 8:46 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.)
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Jesse Gersenson
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by Jesse Gersenson » Tue Aug 21, 2018 10:05 am
Sesse wrote: ↑Tue Aug 21, 2018 8:46 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.
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Sesse
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by Sesse » Tue Aug 21, 2018 10:26 am
Seagate Enterprise Exos X10, 10 TB. Six of them.