microsoft / microsoft/BitNet

[New Bitnet Model Support Request] Deepgrove model Bonsai 0.5B - Add Channel Scales

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C++
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Description

A new SOTA bitnet model, Bonsai 0.5B, has come out. Seems to outperform larger bitnet models like Falcon 1B, 3B, TriLM 700M. Seems like they are going to release a new line of bitnet models which is really exciting.

Support is needed for these models. They adopt a channel wise scaling factor compared to the tensor level ones. Maybe a separate kennel can be built to apply scales outside of the matmul kernels? Probably would yield similar inference speeds. Note that the hugging face does have a custom Q-linear layer that applies the scales.

HF: https://huggingface.co/deepgrove/Bonsai

Seems super promising.

pinging @Eddie-Wang1120 + other kernels writers

Other posts and information:

https://www.reddit.com/r/LocalLLaMA/comments/1jgkqio/new_bitnet_model_from_deepgrove/
https://x.com/deepgrove_ai/status/1903103798735761518

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Research direction

No source file or test is named. Start by inspecting the existing tensor-level scaling and matmul kernels, then compare them with the custom Q-linear layer in the Deepgrove/Bonsai Hugging Face model. Done means Bonsai 0.5B is supported with channel-wise scales and its inference behavior is validated against the model.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp, huggingface
Domain
machine-learning, performance
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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