SD Syzygy

Discussion of anything and everything relating to chess playing software and machines.

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AdminX
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SD Syzygy

Post by AdminX »

Would this be good enough for Syzygy 3, 4, 5 tablebases?

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Or should I go faster?

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"Good decisions come from experience, and experience comes from bad decisions."
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Ted Summers
myfish
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Re: SD Syzygy

Post by myfish »

An interesting idea. I know some have stored databases on cards.

I'm not sure how intensive the data transfer would need to be to make the concept workable?
zullil
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Re: SD Syzygy

Post by zullil »

myfish wrote:An interesting idea. I know some have stored databases on cards.

I'm not sure how intensive the data transfer would need to be to make the concept workable?
The 3-4-5-man files total less than 1 GB. I assume the data would be cached in RAM quickly, so little data-reading would be done from the card.
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AdminX
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Re: SD Syzygy

Post by AdminX »

myfish wrote:An interesting idea. I know some have stored databases on cards.

I'm not sure how intensive the data transfer would need to be to make the concept workable?
Yeah, and I meant 3,4,5 and 6 piece tablebases.
"Good decisions come from experience, and experience comes from bad decisions."
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zullil
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Re: SD Syzygy

Post by zullil »

AdminX wrote:
myfish wrote:An interesting idea. I know some have stored databases on cards.

I'm not sure how intensive the data transfer would need to be to make the concept workable?
Yeah, and I meant 3,4,5 and 6 piece tablebases.
Then get an SSD for best performance.
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AdminX
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Re: SD Syzygy

Post by AdminX »

zullil wrote:
AdminX wrote:
myfish wrote:An interesting idea. I know some have stored databases on cards.

I'm not sure how intensive the data transfer would need to be to make the concept workable?
Yeah, and I meant 3,4,5 and 6 piece tablebases.
Then get an SSD for best performance.
I have a SSD external hooked up already. Wanted something smaller for when I take my laptop on the road.
"Good decisions come from experience, and experience comes from bad decisions."
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zullil
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Re: SD Syzygy

Post by zullil »

AdminX wrote:Wanted something smaller for when I take my laptop on the road.
OK. I use this for portability.

https://www.visiontek.com/solid-state-d ... etail.html
Works well, though a long search tends to cause it to heat up and then throttle down its read-speed.
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MikeB
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Re: SD Syzygy

Post by MikeB »

My $02., provided you have enough RAM, just put the rtbw on a ram disk. Perfect application for use of a Ram Disk. I have the system auto create ram disk and copy the rtbw files on startup to RAM Disk- takes less than 1GB of RAMand 100x faster than solid state. Also do the same for EGTBS. No slow down at all using Stockfish or Crafty.

This is all on a Mac.

edit: Only using 5 man table bases. I could put 6 on RAM if wasn't using the RAM for EGTBs so elected to go with 5 instead since I can fit Syzygy, EGTB and Crafty opening book on an 8GB Ramdisk.
syzygy
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Re: SD Syzygy

Post by syzygy »

MikeB wrote:My $02., provided you have enough RAM, just put the rtbw on a ram disk.
Not a good idea. Better leave them on hdd and let the system swap into RAM those parts that are actually needed. If you put them in a RAM disk, they'll eat memory twice (once in the RAM disk, once in the page cache).
Dirt
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Re: SD Syzygy

Post by Dirt »

AdminX wrote:Yeah, and I meant 3,4,5 and 6 piece tablebases.
That makes more sense.

Since the files are compressed the CPU has to do some work, which slows things down. I would expect the slower one would be almost as good as the faster one, as long as there are no problems like slowing down from getting too hot.
Deasil is the right way to go.