Marvin 6.2.0

[Martin]

A new version of Marvin is now available. I estimate that it is about 30 elo stronger than the previous version.

Changes
* New NNUE architecture
* Added scaling of NNUE scores
* Improved history tables
* Updated to latest version of the Fathom library for Syzygy tablebase acccess
* New UCI command, MoveOverhead

Another change is that I have added support for Raspberry Pi, or more specifically the 64-bit ARM architecture. No pre-built binaries are provided, but I can provide binaries for Raspberry Pi 4 if anyone is interested,

Binaries: https://github.com/bmdanielsson/marvin- ... tag/v6.2.0

[Gabor Szots]

A new version of Marvin is now available. I estimate that it is about 30 elo stronger than the previous version.

Changes
* New NNUE architecture
* Added scaling of NNUE scores
* Improved history tables
* Updated to latest version of the Fathom library for Syzygy tablebase acccess
* New UCI command, MoveOverhead

Another change is that I have added support for Raspberry Pi, or more specifically the 64-bit ARM architecture. No pre-built binaries are provided, but I can provide binaries for Raspberry Pi 4 if anyone is interested,

Binaries: https://github.com/bmdanielsson/marvin- ... tag/v6.2.0

Thanks Martin. I guess the net is included in the exe, no need to download it separately?

[Martin]

A new version of Marvin is now available. I estimate that it is about 30 elo stronger than the previous version.

Changes
* New NNUE architecture
* Added scaling of NNUE scores
* Improved history tables
* Updated to latest version of the Fathom library for Syzygy tablebase acccess
* New UCI command, MoveOverhead

Another change is that I have added support for Raspberry Pi, or more specifically the 64-bit ARM architecture. No pre-built binaries are provided, but I can provide binaries for Raspberry Pi 4 if anyone is interested,

Binaries: https://github.com/bmdanielsson/marvin- ... tag/v6.2.0

Thanks Martin. I guess the net is included in the exe, no need to download it separately?

Yes, the net is included in the exe-file.

[Wolfgang]

CEGT-Blitz

Thanks for the new version!

[Scally]

Hi Martin,

I’ve tried compiling Marvin for my RPi4 but can’t quite manage it.

Can you provide a Makefile or a binary please …

Thanks,

Al

[Martin]

Hi Martin,

I’ve tried compiling Marvin for my RPi4 but can’t quite manage it.

Can you provide a Makefile or a binary please …

Thanks,

Al

Hi,

You should be able to build with the included Makefile using the commands:
make net
make arch=aarch64

The first command will download the the NNUE network file, and the second will build the engine. Let me know if you don't get this to work and I'll make a build for you.

Regards
/Martin

[Scally]

Hi Martin,

We are still 32 bit with archv7l.

Although we’ve built 64bit picochess systems the DGT Pi doesn’t support it on a RPi4. We’ve asked DGT for updated files but they ignore us.

So we are stuck on 32 bit

Al

[Martin]

Ok, that's too bad. At least for now Marvin only supports 64-bit.

Regards
/Martin

[bastiball]

https://ccrl.chessdom.com/ccrl/404FRC/c ... rvin_6_2_0

[chessica]

Ok, that's too bad. At least for now Marvin only supports 64-bit.

Regards
/Martin

Hi Martin, I have only an older PC with Windows 64 and tried to compile Marvin.
First I loaded the network and then did the make. The exe file was also created.
When I start it, the console opens but after about 1 second it closes by itself.