7-men Syzygy attempt

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koedem
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Re: 7-men Syzygy attempt

Post by koedem » Tue Mar 20, 2018 12:40 am

syzygy wrote:To prevent your programs from being swapped out, disable the page file. Windows will then release RAM caching TB data when it needs more memory.
Thanks, as obvious as it is for some reason that didn't occur to me. Tried it (I set max pagefile size to something small like 256 MB) and indeed the problem seems to be gone. Thank you. :)

koedem
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Re: 7-men Syzygy attempt

Post by koedem » Tue Mar 27, 2018 2:22 am

syzygy wrote:To prevent your programs from being swapped out, disable the page file. Windows will then release RAM caching TB data when it needs more memory.
Seems like Windows doesn't quite work well in that regard. https://www.dropbox.com/s/ehunw6r9nf8t5 ... m.png?dl=0
However it seems (?) one can just ignore that and it will go on just fine...


On a seperate note, any progress being made on the Syzygy 7 men? The mate in 500 or what it was did seem like it can work. :)

noobpwnftw
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Re: 7-men Syzygy attempt

Post by noobpwnftw » Tue Mar 27, 2018 5:49 am

koedem wrote: On a seperate note, any progress being made on the Syzygy 7 men? The mate in 500 or what it was did seem like it can work. :)
My building process is ongoing, soon I will prepare another machine to build different sets in parallel.

Ronald is already working on a file format to store large DTZ values, the generator is fine, it would just require a bit more memory to build, and such cases are not very common among 7 pieces.

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Nordlandia
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Re: 7-men Syzygy attempt

Post by Nordlandia » Tue Mar 27, 2018 6:38 am

Is there any hint implying more cursed wins for 7-man bases than 6-man?
ˆ
Passive alternative for 7-man bases is to purchase 20 TB HDD with the idea to use them only with cutechess adjudication. Probing 6-men + 7-man adjudication.

As of now i probe 5-men during search + immediate 6-man adjudication. Work without performance penalty because the HDD is awaken from hibernation once number of pieces present on the board is near 6-pieces.

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Nordlandia
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Re: 7-men Syzygy attempt

Post by Nordlandia » Tue Mar 27, 2018 7:16 am

For example WD 20TB My Book Duo Desktop for 800 dollar.

https://www.amazon.com/20TB-Desktop-Ext ... B074R34DD3

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Ozymandias
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Re: 7-men Syzygy attempt

Post by Ozymandias » Tue Mar 27, 2018 7:34 am

Nordlandia wrote:Is there any hint implying more cursed wins for 7-man bases than 6-man?
ˆ
Passive alternative for 7-man bases is to purchase 20 TB HDD with the idea to use them only with cutechess adjudication. Probing 6-men + 7-man adjudication.

As of now i probe 5-men during search + immediate 6-man adjudication. Work without performance penalty because the HDD is awaken from hibernation once number of pieces present on the board is near 6-pieces.
Do we need that much HDD space for 7-pieces?
Does cutechess adjudicate 7-men already?

Vinvin
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Re: 7-men Syzygy attempt

Post by Vinvin » Tue Mar 27, 2018 8:37 am

Please, can somebody gives a rough estimation of 7-men Syzygy sizes.

1) Number of files ?
1) Number of pawnless files ?
2) Size of DTZ for all files ?
2) Size of WDL for all files ?

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Nordlandia
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Re: 7-men Syzygy attempt

Post by Nordlandia » Tue Mar 27, 2018 1:02 pm

7-man adj can be requested for cutechess.

20 TB is Ronald's estimation back in 2017. This value can change however.

syzygy
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Re: 7-men Syzygy attempt

Post by syzygy » Tue Mar 27, 2018 3:32 pm

My estimation was 10 TB for WDL and 10 TB for DTZ. For adjudication you would only need WDL.

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Ozymandias
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Re: 7-men Syzygy attempt

Post by Ozymandias » Tue Mar 27, 2018 3:39 pm

Nordlandia wrote:20 TB is Ronald's estimation back in 2017. This value can change however.
Let's hope so, HDD prices are basically the same as 6-7 years ago (at least in Spain).

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