A CUDA/CPU NN Trainer, used to train NNUE-style networks for akimbo.

Also used by many other engines, including:

• Alexandria
• Altair
• Carp
• Midnight
• Obsidian
• Stormphrax
• Willow
• Viridithas

• Chess
• Ataxx

Raise an issue for support of a new game.

Import the crate with

bullet = { package = "bullet_lib", version = "1.0.0", features = ["cuda"] }

Check out the wiki and examples to see how to use the crate.

You can build bullet-utils with cargo b -r --package bullet-utils, to do the following:

• Convert Data
• Interleave Multiple Data Files
• Shuffle Data Files
• Validate Data Files

Use ./target/release/bullet-utils[.exe] help to see specific usage.

CPU backend not intended for serious training use. It is suitable for training small networks or various utilities, such as loading nets to requantise them or test their output on specific positions.

The "first class" supported backend. To compile to target CUDA you need to enable the cuda feature, as demonstrated in the wiki.

Mainly directed toward users with AMD GPUs. To compile to target HIP you need to enable the hip feature, as demonstrated in the wiki. You will need to install the HIP SDK.