Stockfish version with hash saving capability

[giovanni]

Thanks. However I tried to compile it on my ubuntu linux box and I didn't succeed:

...
for (long long i = 0; i < clusterCount * sizeof(Cluster); i += (1 << 30)) { //1GB
^
tt.cpp:107:71: error: ‘__min’ was not declared in this scope
long long j = __min((1 << 30), (clusterCount * sizeof(Cluster)) - i);
^

Is far from the best solution, but you can try adding this line in tt.cpp before the use of __min

Code: Select all

#define __min&#40;a,b&#41; ((&#40;a&#41; < &#40;b&#41;) ? &#40;a&#41; &#58; &#40;b&#41;)

Sure someone will understand what is happening.

Thanks. Now compiles fine.

[cdani]

I gave it this epd (1 position) and engine still stops working.

r3kb1r/1bqn1p1p/p1Np1P2/3P4/1p6/5Q1B/PPP4P/2KR2R1 b kq - 4 20 acd 40; ce 2426; bm Bh3

Can you try this format?

Code: Select all

r3kb1r/1bqn1p1p/p1Np1P2/3P4/1p6/5Q1B/PPP4P/2KR2R1 b kq - 4 20 acd 40;; bm Bh3; ce 2426;;

[Dann Corbit]

Done:

www.andscacs.com/downloads/stockfish_x6 ... vehash.zip

It has a new option
option name LoadEpdToHash type button

First you set
HashFile
to an epd file and then press this new button.

It does what is supposed to do, but I don't know if this influences Stockfish search a lot, as I have not tried.
I hope is useful to someone.

I do not have this button.
I searched the code base for LoadEpdToHash but it found nothing.
Perhaps the new version did not get pushed to the archive?

[Dann Corbit]

Done:

www.andscacs.com/downloads/stockfish_x6 ... vehash.zip

It has a new option
option name LoadEpdToHash type button

First you set
HashFile
to an epd file and then press this new button.

It does what is supposed to do, but I don't know if this influences Stockfish search a lot, as I have not tried.
I hope is useful to someone.

These are the new options that I see in the code:
//dani170724
o["NeverClearHash"] << Option(false);
o["HashFile"] << Option("hash.hsh", on_HashFile);
o["SaveHashtoFile"] << Option(SaveHashtoFile);
o["LoadHashfromFile"] << Option(LoadHashfromFile);
//enddani170724

I do not have this button.
I searched the code base for LoadEpdToHash but it found nothing.
Perhaps the new version did not get pushed to the archive?

[Rodolfo Leoni]

Done:

www.andscacs.com/downloads/stockfish_x6 ... vehash.zip

It has a new option
option name LoadEpdToHash type button

First you set
HashFile
to an epd file and then press this new button.

It does what is supposed to do, but I don't know if this influences Stockfish search a lot, as I have not tried.
I hope is useful to someone.

I do not have this button.
I searched the code base for LoadEpdToHash but it found nothing.
Perhaps the new version did not get pushed to the archive?

Hi Dann.

I have the button. It's just below the LoadFileToHash button.

[Dann Corbit]

Done:

www.andscacs.com/downloads/stockfish_x6 ... vehash.zip

It has a new option
option name LoadEpdToHash type button

First you set
HashFile
to an epd file and then press this new button.

It does what is supposed to do, but I don't know if this influences Stockfish search a lot, as I have not tried.
I hope is useful to someone.

I do not have this button.
I searched the code base for LoadEpdToHash but it found nothing.
Perhaps the new version did not get pushed to the archive?

Hi Dann.

I have the button. It's just below the LoadFileToHash button.

Mystery solved. I did not notice that his archive started at root folder level, so I was looking for the code and executables in the wrong place. I found an older version that he made instead.

[Dann Corbit]

Done:

www.andscacs.com/downloads/stockfish_x6 ... vehash.zip

It has a new option
option name LoadEpdToHash type button

First you set
HashFile
to an epd file and then press this new button.

It does what is supposed to do, but I don't know if this influences Stockfish search a lot, as I have not tried.
I hope is useful to someone.

I do not have this button.
I searched the code base for LoadEpdToHash but it found nothing.
Perhaps the new version did not get pushed to the archive?

Hi Dann.

I have the button. It's just below the LoadFileToHash button.

Mystery solved. I did not notice that his archive started at root folder level, so I was looking for the code and executables in the wrong place. I found an older version that he made instead.

I had to fiddle with it to make it work in a way that I understood.

It loaded 4 million EPD rows in 22 seconds.
In the first game, it got a draw with Asmfish.

I will need a deeper pile of EPD for sure.

I saw an advantage develop for the hash loaded version, but it got slowly drained away. With only 4 million hash entries loaded, it would be pretty sparse in reality.

I figure with a billion entries in the hash, it might have a terrific advantage. Further, after it minimaxes for a while, the hash should get stronger and stronger (in theory). I imagine that a lot of good entries will get aged out of the table, though.

[Dann Corbit]

Game 2, got a pawn advantage on Komodo, but ended in a draw.

[cdani]

It loaded 4 million EPD rows in 22 seconds.
In the first game, it got a draw with Asmfish.

I will need a deeper pile of EPD for sure.

I saw an advantage develop for the hash loaded version, but it got slowly drained away. With only 4 million hash entries loaded, it would be pretty sparse in reality.

I figure with a billion entries in the hash, it might have a terrific advantage. Further, after it minimaxes for a while, the hash should get stronger and stronger (in theory). I imagine that a lot of good entries will get aged out of the table, though.

Nice first attempt!
If you want to make it load faster the epd file, you probably know that you can remove all the "sync_cout <<" lines in the source.
Also I understand that you will load the full epd file before the start of each game.

[Dann Corbit]

Built fine for me.
I am going to test it this evening.

Did you compile it on ubuntu?

I compiled the wrong version altogether.

When I got the right version, I included the algorithm header and changed the macro to the template method.

I do have Ubuntu here. My 64 core box runs Ubuntu.