My "official" request to top engine programmers

[carldaman]

Are we both talking about this one from Jeremy Bernstein?

http://www.open-chess.org/viewtopic.php?f=7&t=2663

The download-link given in that posting even works still

That was the one. Eventually Jeremy got tired of updating it to the latest SF version.

[carldaman]

Done here!
http://www.andscacs.com/downloads/andscacs091142.zip
(Windows version)
Can someone test it and see if it behaves better in analysis mode? I will try it also.
Thanks

Daniel, you are a great man!!!!

I always thought it, as ours peoples are a bit related. I live near Alghero, in Sardinia island, and it was a Catalan town. Its old name was "Alguier".

I have done also a version of the current Stockfish (only Windows x64 popcnt) that have this change:

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

In the zip file there are two versions:
stockfish_x64_modern_170708_analysis.exe
stockfish_x64_modern_170708.exe

The second is normal Stockfish so one can compare.

The change is:

Code: Select all

if (!Limits.infinite)
	TT.new_search();

I suppose that this is correct. Anyway just tell me.

Thanks a lot, Daniel -- if there's a will...

[peter]

Are we both talking about this one from Jeremy Bernstein?

http://www.open-chess.org/viewtopic.php?f=7&t=2663

The download-link given in that posting even works still

That was the one. Eventually Jeremy got tired of updating it to the latest SF version.

That's it, Carl.
http://www.open-chess.org/viewtopic.php ... =20#p22702
What a pity

[Rodolfo Leoni]

Are we both talking about this one from Jeremy Bernstein?

http://www.open-chess.org/viewtopic.php?f=7&t=2663

The download-link given in that posting even works still

It works similar to Critter sf but with more additional features, as fhe import epd, the hash merge, the hash prune. Search is faster if opponent plays the ponder move, even with ponder off. That's due to forward propagation, I guess.

To implement all of these features means a lot of work. I'm happy with the new Andscacs feature, for now, and I wait for the load/save hashes in Andscacs and "AndFish".

[peter]

Hi Rodolfo!

To implement all of these features means a lot of work. I'm happy with the new Andscacs feature,

Of course, as a fastidious user one always tends to be unhumble.
Yet I already did say thanks a lot to Daniel too

[Rodolfo Leoni]

Hi Rodolfo!

To implement all of these features means a lot of work. I'm happy with the new Andscacs feature,

Of course, as a fastidious user one always tends to be unhumble.
Yet I already did say thanks a lot to Daniel too

Hi Peter!

Nice to meet you again.
I think there's a lot of potential in Andscacs and the best thing to do is to let Daniel working on it. If it's a little effort as to make hashes persistent in infinite analysis or to introduce a load and save command button than we can expect he'll do it, but when things become more complicated it'd be unfair to ask Daniel or anybody else to let his developement work apart. At least, for now.

[BeyondCritics]

The change is:

Code: Select all

if (!Limits.infinite)
	TT.new_search();

I suppose that this is correct. Anyway just tell me.

Great!
A change must not be big, to be useful.

I tested it and found out, that the amount of "hash_full" is now constantly calculated as 100%. The problem seems to be, that now empty entries are confounded with loaded entries.
My proposal to fix is in branch analysis of my fork of stockfish:
https://github.com/official-stockfish/S ... s:analysis

[cdani]

If it's a little effort as to make hashes persistent in infinite analysis or to introduce a load and save command button than we can expect he'll do it, but when things become more complicated it'd be unfair to ask Daniel or anybody else to let his developement work apart. At least, for now.

I added to Andscacs the capability of saving the full hash to file, to allow the user to recover a previous analysis session and continue it.
The saved hash file will be of the same size of the hash memory, so if you defined 4 GB of hash, such will be the file size. Saving and loading such big files can take some time.

To be able to do it I have added 4 new uci parameters:

option name NeverClearHash type check default false
option name HashFile type string default hash.hsh
option name SaveHashtoFile type button
option name LoadHashfromFile type button

You can set the NeverClearHash option to avoid that the hash could be cleared by a Clear Hash or ucinewgame command.

The HashFile parameter is the full file name with path information. If you don't set the path, it will be saved in the current folder. It defaults to hash.hsh.

To save the hash, stop the analysis and press the SaveHashtoFile button in the uci options screen of the GUI.

To load the hash file, load the game you are interested in, load the engine withouth starting it, and press the LoadHashfromFile button in the uci options screen of the GUI. Now you can start the analysis.

(windows 64 popcnt)
www.andscacs.com/downloads/andscacs091148.zip

I have tested it a few times. If anything strange happens let me know.
I hope is useful to analyzers!

[Rodolfo Leoni]

If it's a little effort as to make hashes persistent in infinite analysis or to introduce a load and save command button than we can expect he'll do it, but when things become more complicated it'd be unfair to ask Daniel or anybody else to let his developement work apart. At least, for now.

I added to Andscacs the capability of saving the full hash to file, to allow the user to recover a previous analysis session and continue it.
The saved hash file will be of the same size of the hash memory, so if you defined 4 GB of hash, such will be the file size. Saving and loading such big files can take some time.

To be able to do it I have added 4 new uci parameters:

option name NeverClearHash type check default false
option name HashFile type string default hash.hsh
option name SaveHashtoFile type button
option name LoadHashfromFile type button

You can set the NeverClearHash option to avoid that the hash could be cleared by a Clear Hash or ucinewgame command.

The HashFile parameter is the full file name with path information. If you don't set the path, it will be saved in the current folder. It defaults to hash.hsh.

To save the hash, stop the analysis and press the SaveHashtoFile button in the uci options screen of the GUI.

To load the hash file, load the game you are interested in, load the engine withouth starting it, and press the LoadHashfromFile button in the uci options screen of the GUI. Now you can start the analysis.

(windows 64 popcnt)
www.andscacs.com/downloads/andscacs091148.zip

I have tested it a few times. If anything strange happens let me know.
I hope is useful to analyzers!

Great !!!
Yes, it'll be very usefuk.
I'll test it tomorrow. Thanks again.

[duncan]

Are we both talking about this one from Jeremy Bernstein?

http://www.open-chess.org/viewtopic.php?f=7&t=2663

The download-link given in that posting even works still

I tried this. hash is only 4 meg. do you know how does one change that?