CorChess for Android

Skynet · Post by **Skynet** » 19/08/2021, 20:37

Archimedes wrote: ↑19/08/2021, 11:05 Faster builds are always appreciated.

Corchess 190821-gcc
ARM8 https://pixeldrain.com/u/14Ebrm9q

kramnik · Post by **kramnik** » 20/08/2021, 3:13

These are two different armv8 compiles from the last CorChess 2, one under Linux and one under Windows:

https://pixeldrain.com/l/aDLXmrBi

Can someone tell me if they have some kind of difference? The Android compiling from Windows is still under experimentation, on my device it works. If everything is ok I'll put a tutorial on how to do it.

Evo · Post by **Evo** » 20/08/2021, 3:27

kramnik wrote: ↑20/08/2021, 3:13 These are two different armv8 compiles from the last CorChess 2, one under Linux and one under Windows:

https://pixeldrain.com/l/aDLXmrBi

Can someone tell me if they have some kind of difference? The Android compiling from Windows is still under experimentation, on my device it works. If everything is ok I'll put a tutorial on how to do it.

Hello Mr. Goi, from what I saw, the link goes to PC engines platform and not the Android engines , yes it was Corchess but nor for Android,

R u sure ur in the right section of topic's ?
Greetings

leonhurricaneX · Post by **leonhurricaneX** » 20/08/2021, 4:37

kramnik wrote: ↑20/08/2021, 3:13 These are two different armv8 compiles from the last CorChess 2, one under Linux and one under Windows:

https://pixeldrain.com/l/aDLXmrBi

Can someone tell me if they have some kind of difference? The Android compiling from Windows is still under experimentation, on my device it works. If everything is ok I'll put a tutorial on how to do it.

There is no difference between them same version of clang and equal speed.

Windows

► Show Spoiler

Linux

► Show Spoiler

Skynet's build are over 10% faster than both PC NDK Version.
Compiled using Termux+GCC-11

► Show Spoiler

kramnik · Post by **kramnik** » 20/08/2021, 5:59

Those are just pivot names, both the binaries are Android armv8 only.

Evo wrote: ↑20/08/2021, 3:27
kramnik wrote: ↑20/08/2021, 3:13 These are two different armv8 compiles from the last CorChess 2, one under Linux and one under Windows:

https://pixeldrain.com/l/aDLXmrBi

Can someone tell me if they have some kind of difference? The Android compiling from Windows is still under experimentation, on my device it works. If everything is ok I'll put a tutorial on how to do it.
Hello Mr. Goi, from what I saw, the link goes to PC engines platform and not the Android engines , yes it was Corchess but nor for Android,

R u sure ur in the right section of topic's ?
Greetings

kramnik · Post by **kramnik** » 20/08/2021, 6:01

Thank you very much for the hint. So the Termux compilation is the most effective...

leonhurricaneX wrote: ↑20/08/2021, 4:37
kramnik wrote: ↑20/08/2021, 3:13 These are two different armv8 compiles from the last CorChess 2, one under Linux and one under Windows:

https://pixeldrain.com/l/aDLXmrBi

Can someone tell me if they have some kind of difference? The Android compiling from Windows is still under experimentation, on my device it works. If everything is ok I'll put a tutorial on how to do it.
There is no difference between them same version of clang and equal speed.

Windows
► Show Spoiler

Linux
► Show Spoiler

Skynet's build are over 10% faster than both PC NDK Version.
Compiled using Termux+GCC-11
► Show Spoiler

Archimedes · Post by **Archimedes** » 20/08/2021, 11:11

kramnik wrote: ↑20/08/2021, 6:01 Thank you very much for the hint. So the Termux compilation is the most effective...

The only downside of doing this on termux (with -march=native flag) is, it only runs on the same type of cpu, which could be result in compatibility issues when distributing it for other devices. Most effective, when compiling on the same machine where the chess engine is used at the end.

kramnik · Post by **kramnik** » 20/08/2021, 23:13

So they succeeded to really have a native compiler for Android, not a sandbox. That's great!
The only problem with Termux is that GCC is deprecated there. No, there is another one: the official Termux repository seems to be down:

One .ore thing: if the -march=native flag is avoided we'll have a binary working with other Android devices?

Archimedes wrote: ↑20/08/2021, 11:11
kramnik wrote: ↑20/08/2021, 6:01 Thank you very much for the hint. So the Termux compilation is the most effective...
The only downside of doing this on termux (with -march=native flag) is, it only runs on the same type of cpu, which could be result in compatibility issues when distributing it for other devices. Most effective, when compiling on the same machine where the chess engine is used at the end.

leonhurricaneX · Post by **leonhurricaneX** » 21/08/2021, 0:15

► Show Spoiler

Playstore Version is outdated we are using Fdroid Version.

https://f-droid.org/repo/com.termux_117.apk

Archimedes · Post by **Archimedes** » 21/08/2021, 21:42

kramnik wrote: ↑20/08/2021, 23:13 One .ore thing: if the -march=native flag is avoided we'll have a binary working with other Android devices?

I'm not the expert for the command line parameters for gcc, but something like -march=armv8-a came into my mind. Beside that, there also exists other parameters like -mtune and -mcpu, which can be combined. Studying the help file of gcc will help.

Archimedes · Post by **Archimedes** » 28/09/2021, 11:52

Faster builds are always appreciated.

CorChess 210928:
https://app.box.com/s/5vul57eju0n751igy7x9owfxdabnmxo4

Skynet · Post by **Skynet** » 29/09/2021, 20:01

Corchess 280921 gcc, Merge pull request #1504 from IIvec/master. https://github.com/IIvec/Stockfish/commit/4dcbff9cb16280d0c4bed9123af2f0291b718733

ARM8 https://pixeldrain.com/u/g9ZqZqKm

Skynet · Post by **Skynet** » 29/09/2021, 21:36

Chess.Basse wrote: ↑29/09/2021, 20:03 Today i analysis CTG book with This Awesome engine. My book beat 64 core. Thanks for the engines

Yeah, ok, tnx for the useless information, you can stop flooding now..

Skynet · Post by **Skynet** » 08/10/2021, 14:36

Corchess 071021, "Merge branch 'corchess' into master-1". https://github.com/IIvec/Stockfish/commit/2983757e189fc4e0c071fcfcc05a24b3ea56e54e

ARM8 https://pixeldrain.com/u/KocjDfAn

Archimedes · Post by **Archimedes** » 13/10/2021, 9:18

Faster build for arm64-v8a based CPUs may follow.

CorChess 211011:
https://app.box.com/s/nnjnwnxcbmx86vg5yp27xmg8xp4ai7cf

Outskirts CheSS ForuM

Outskirts CheSS ForuM