Syzygy bases slowing down engine ?

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Lion
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Syzygy bases slowing down engine ?

Post by Lion » Thu Jun 14, 2018 7:25 pm

Hello

I just installed the Syzygy endgame databases in Fritz GUI and realize that when playing close to endgames by engine kn/s drastically goes down from i.e. 35'000 kn/s to as low as about 4'000 kn/s.

Is that behavior normal?

rgds

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Ozymandias
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Re: Syzygy bases slowing down engine ?

Post by Ozymandias » Thu Jun 14, 2018 7:34 pm

With a mechanical HDD? It is, default probe depths are really low nowadays.

Sesse
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Re: Syzygy bases slowing down engine ?

Post by Sesse » Thu Jun 14, 2018 7:35 pm

Yes, it's normal if you have the tablebases on a slow disk (especially anything that's not SSD). Assuming, of course, you don't have enough RAM to cache the relevant set.

Lion
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Re: Syzygy bases slowing down engine ?

Post by Lion » Thu Jun 14, 2018 7:37 pm

I use them on usb 3 memory stick from chessbase

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Ozymandias
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Re: Syzygy bases slowing down engine ?

Post by Ozymandias » Thu Jun 14, 2018 7:38 pm

What a shit product, then. I'm not bad mouthing gladly, but there's no polite way to say it.

Milos
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Re: Syzygy bases slowing down engine ?

Post by Milos » Thu Jun 14, 2018 8:51 pm

Lion wrote:
Thu Jun 14, 2018 7:37 pm
I use them on usb 3 memory stick from chessbase
USB sticks have latency worse than even slow HDDs. So it's not a surprise. Put probe depth to 16+ and you'll be fine.

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Ozymandias
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Re: Syzygy bases slowing down engine ?

Post by Ozymandias » Fri Jun 15, 2018 8:17 am

Milos wrote:
Thu Jun 14, 2018 8:51 pm
Lion wrote:
Thu Jun 14, 2018 7:37 pm
I use them on usb 3 memory stick from chessbase
USB sticks have latency worse than even slow HDDs. So it's not a surprise. Put probe depth to 16+ and you'll be fine.
He will solve the CPU usage problem, but will probe way less. Better to just by a decent SSD and copy the files there (and while he's at it, he could download the missing TBs).

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