LC0 For Android!!! History Made!!

[Eduard]

The engine 32 bit unfortunately does not run on Android 5.1. It would be nice if there is also a compile for it. Thank you in advance!

[lealgo]

The engine 32 bit unfortunately does not run on Android 5.1. It would be nice if there is also a compile for it. Thank you in advance!

Hi,

The wiki was updated with new builds, now targeting lower Android versions:

The 64 bit builds are compiled targeting the API Level 21 (equivalent to Android 5.0 Lollipop). The 32 bit ones target the API Level 16 (Android 4.1 Jelly Bean). Older Android versions may not work.

More here:

https://github.com/LeelaChessZero/lc0/w ... or-android

Regards,
Leandro

[Eduard]

Thanks! I will testing and hope it works.

[supersharp77]

The engine 32 bit unfortunately does not run on Android 5.1. It would be nice if there is also a compile for it. Thank you in advance!

Hi,

The wiki was updated with new builds, now targeting lower Android versions:

The 64 bit builds are compiled targeting the API Level 21 (equivalent to Android 5.0 Lollipop). The 32 bit ones target the API Level 16 (Android 4.1 Jelly Bean). Older Android versions may not work.

More here:

https://github.com/LeelaChessZero/lc0/w ... or-android

Regards,
Leandro

New builds for a wider support of Android versions!!!! Thank You My Friend!!!

aarch64 builds for Android 5.0 and up
armv7a builds for Android 4.1 and up

https://github.com/LeelaChessZero/lc0/f ... -api21.zip

https://github.com/LeelaChessZero/lc0/f ... 1-48x5.zip

https://github.com/LeelaChessZero/lc0/f ... -api21.zip

https://github.com/LeelaChessZero/lc0/f ... -api21.zip

https://github.com/LeelaChessZero/lc0/f ... -api16.zip

https://github.com/LeelaChessZero/lc0/f ... 6-48x5.zip

https://github.com/LeelaChessZero/lc0/f ... -api16.zip

[Eduard]

Great, "lc0 api16 32bit' works now under Android 5.1 32-bit!

[Aleksei]

Congrats, arm7 api 16 working fine on 32 bit device! I have a question, what is the default hash size that engine is using, and how can i change it?
I suppose MinibatchSize and MaxPrefetch dosen't have anything to do with hash, right?

[lealgo]

Congrats, arm7 api 16 working fine on 32 bit device! I have a question, what is the default hash size that engine is using, and how can i change it?
I suppose MinibatchSize and MaxPrefetch dosen't have anything to do with hash, right?

Lc0 doesn't use a traditional transposition table. The most similar parameter to hash would be NNCacheSize.

--nncache=0..999999999
Number of positions to store in a memory cache. A large cache can speed up
searching, but takes memory.
[UCI: NNCacheSize DEFAULT: 200000 MIN: 0 MAX: 999999999]

Also for higher NPS with blas on these devices, I recommend the following:
- set the Threads value up to 8
- set MaxPrefetch to 0

Regards,
Leandro

[supersharp77]

Great, "lc0 api16 32bit' works now under Android 5.1 32-bit!

New compiles Arm7 finally working in Droidfish (Modified APK for LC0) none of the arm7 compiles worked in any of the old versions of ChessForAndroid 5.6..5.9...6.15...engine would only load and work in the very latest version of Chessforandroid (May 28 2019 update) embedded weights version working less well than version with seperate weights (moves instantly)
testing underway!!

[lealgo]

Great, "lc0 api16 32bit' works now under Android 5.1 32-bit!

New compiles Arm7 finally working in Droidfish (Modified APK for LC0) none of the arm7 compiles worked in any of the old versions of ChessForAndroid 5.6..5.9...6.15...engine would only load and work in the very latest version of Chessforandroid (May 28 2019 update) embedded weights version working less well than version with seperate weights (moves instantly)
testing underway!!

Hi,

Just to clarify, you shouldn't need the DroidFish fork to run these new builds. That was only needed when building the old way on Termux because the engine required some extra libs. That's not longer the case with any of the builds posted on the wiki, they should work with the regular chess gui's available on Google Play.

Regards,
Leandro

[supersharp77]

Great, "lc0 api16 32bit' works now under Android 5.1 32-bit!

New compiles Arm7 finally working in Droidfish (Modified APK for LC0) none of the arm7 compiles worked in any of the old versions of ChessForAndroid 5.6..5.9...6.15...engine would only load and work in the very latest version of Chessforandroid (May 28 2019 update) embedded weights version working less well than version with seperate weights (moves instantly)
testing underway!!

Hi,

Just to clarify, you shouldn't need the DroidFish fork to run these new builds. That was only needed when building the old way on Termux because the engine required some extra libs. That's not longer the case with any of the builds posted on the wiki, they should work with the regular chess gui's available on Google Play.

Regards,
Leandro

I ran the Termux BYO last night on my Tablet(2) and my android phone Arm7...spent a lot of time and lots of downloading and "Bells & Whistles" but no LC0 engine ever did appear in my Droidfish uci engines folder..You might want to rethink that one..."A total waste of time"....