Crystal for Android

Skynet · Post by **Skynet** » 18/04/2020, 20:29

Crystal by Ivan Ivec is now included in the main CorChess/Stockfish repertoire..
http://outskirts.altervista.org/forum/viewtopic.php?p=7747&view=single_post#p7747
GitHub https://github.com/IIvec/Stockfish/tree/crystal

Crystal-180420-arm7-pgo.7z

Crystal-180420-arm8-pgo.7z

Happy Easter!

camava · Post by **camava** » 20/04/2020, 2:23

Sr.
Thank you for this chess engine.
But i have a problem.
The engine stops after 5 or 6 seconds.
Android 5 and Android 10.

Skynet · Post by **Skynet** » 20/04/2020, 5:50

camava wrote:Sr.
Thank you for this chess engine.
But i have a problem.
The engine stops after 5 or 6 seconds.
Android 5 and Android 10.

Both arm7 & arm8? In which GUI, and it is showing any message like "engine terminated"?
I just kept the engine in analysis mode for more than 15 minutes, with syzygy TB, everything works fine!

► Show Spoiler

camava · Post by **camava** » 20/04/2020, 11:11

Yes.,both.

It is in Droidfish in analysis mode.
I check it solving puzzles(it is great doing that)
Some times i have "error"message and other times engine just stops..

It some times runs fine

Arm8 its running in Snapdragon 665 ,4gb ram android 10.

Arm7 old tablet 2gb ram 4 cores android 5

Skynet · Post by **Skynet** » 20/04/2020, 15:42

camava wrote:Yes.,both.

It is in Droidfish in analysis mode.
I check it solving puzzles(it is great doing that)
Some times i have "error"message and other times engine just stops..

It some times runs fine

Arm8 its running in Snapdragon 665 ,4gb ram android 10.

Arm7 old tablet 2gb ram 4 cores android 5

From curiosity, did you update Droidfish till the last version? I use ver 1.78, last update is completely useless. Try the engine in Cfa, if it works, downgrade the Droidfish. I also tried arm7, all good!

Skynet · Post by **Skynet** » 20/04/2020, 17:08

camava wrote:Yes.,both.

It is in Droidfish in analysis mode.
I check it solving puzzles(it is great doing that)
Some times i have "error"message and other times engine just stops..

It some times runs fine

Arm8 its running in Snapdragon 665 ,4gb ram android 10.

Arm7 old tablet 2gb ram 4 cores android 5

Try this arm8-pgo-gcc
http://s000.tinyupload.com/index.php?file_id=60485288034538465103

camava · Post by **camava** » 20/04/2020, 17:29

Skynet wrote:
camava wrote:Yes.,both.

It is in Droidfish in analysis mode.
I check it solving puzzles(it is great doing that)
Some times i have "error"message and other times engine just stops..

It some times runs fine

Arm8 its running in Snapdragon 665 ,4gb ram android 10.

Arm7 old tablet 2gb ram 4 cores android 5
From curiosity, did you update Droidfish till the last version? I use ver 1.78, last update is completely useless. Try the engine in Cfa, if it works, downgrade the Droidfish. I also tried arm7, all good!

I have tried both versions.
1.81 and 1.78.
Same error
After 3 or 4 minutes this puzzle

flither · Post by **flither** » 20/04/2020, 18:58

camava wrote:I have tried both versions.
1.81 and 1.78.
Same error
After 3 or 4 minutes this puzzle

I tried this position with DF 1.81 and arm8 Crystal 180420. My phone has Snap 855+ and Android 10.
No problems after 4 minutes/1500MNodes searched/depth 31.
I have set threads to 8, hash to 2048MB and 5-men Syzygy TB.
Although after 600MN searched (like on your screenshot) Crystal was showing eval around +10, not +4, the same move.

camava · Post by **camava** » 21/04/2020, 0:59

Skynet wrote:
camava wrote:Yes.,both.

It is in Droidfish in analysis mode.
I check it solving puzzles(it is great doing that)
Some times i have "error"message and other times engine just stops..

It some times runs fine

Arm8 its running in Snapdragon 665 ,4gb ram android 10.

Arm7 old tablet 2gb ram 4 cores android 5
Try this arm8-pgo-gcc
http://s000.tinyupload.com/index.php?file_id=60485288034538465103

Hi.
I did it.
Same problem.
SF- Crystal-2.0 same error too(but it can't find right move).
I tried 1,2,4,8 threads.

I tried Komodo 13.1 and Gull_3 and all fine,no error after 8 minutes komodo and 15 minutes Gull.

camava · Post by **camava** » 21/04/2020, 1:13

I found something important.

After 5 trys 15 minutes each one engine is runming perfect using next configuration.

Skynet · Post by **Skynet** » 21/04/2020, 8:52

camava wrote:I found something important.

After 5 trys 15 minutes each one engine is runming perfect using next configuration.

That's interesting! I had identical problem with two other engines. In the first engine, after i disabled/unmarked "Best book move" it's started to work. In second engine after i disabled/unmarked "Syzygy50MoveRule" option it's also started to work..

So it is still unclear, is it Droidfish bug or the issue comes from the engine? Although i've nothing changed in the engines compilations, same method as usual.

P.s. i'm staying with Droidfish 1.78, last updates make it worse due to bunch of useless options. Also if engine crashes, try to disable in GUI's settings "White-based scores", "Flip board: Auto", "Full screen mode", "Enabled Vibration", "Left-handed mode", "Quick move input", "Invert scroll Direction".

camava · Post by **camava** » 21/04/2020, 9:41

Skynet wrote:
camava wrote:I found something important.

After 5 trys 15 minutes each one engine is runming perfect using next configuration.
That's interesting! I had identical problem with two other engines. In the first engine, after i disabled/unmarked "Best book move" it's started to work. In second engine after i disabled/unmarked "Syzygy50MoveRule" option it's also started to work..
So it is still unclear, is it Droidfish bug or the issue comes from the engine? Although i've nothing changed in the engines compilations, same method as usual.
P.s. i'm staying with Droidfish 1.78, last updates make it worse due to bunch of useless options. Also if engine crashes, try to disable in GUI's settings "White-based scores", "Flip board: Auto", "Full screen mode", "Enabled Vibration", "Left-handed mode", "Quick move input", "Invert scroll Direction".

Yes.It's interesting.

I'll do what you said about GUI'S setting and i'll tell you what is going on with it

flither · Post by **flither** » 21/04/2020, 9:59

camava wrote:I found something important.

After 5 trys 15 minutes each one engine is runming perfect using next configuration.

Good to hear but I can see on the screenshots that you're not using Syzygy or it's configured wrongly.
On this position my Crystal has millions of tablebase hits after few seconds, but your screenshots don't show any.

camava · Post by **camava** » 21/04/2020, 16:52

flither wrote:
camava wrote:I found something important.

After 5 trys 15 minutes each one engine is runming perfect using next configuration.
Good to hear but I can see on the screenshots that you're not using Syzygy or it's configured wrongly.
On this position my Crystal has millions of tablebase hits after few seconds, but your screenshots don't show any.

Hi mr flither.
Can you show me your configuration for this engine please.
Thankz

Skynet · Post by **Skynet** » 25/04/2020, 17:46

Crystal 250420 "Update search.cpp" https://github.com/IIvec/Stockfish/tree/crystal

Crystal-250420-arm7-pgo.7z

Crystal-250420-arm8-pgo.7z

=======================
P.s. camava, you was right. Yesterday i spend 2+ hours solving positions with Crystal, and at some point engine was crashing with the message "Engine terminated".

I've tried different settings but still, engine was crashing. In today's version i noticed something strange, bench command in pre-pgo engine was running longer than suppose to be. If the problem persists, I will need to report it to Ivec on GitHub.

Outskirts CheSS ForuM

Outskirts CheSS ForuM