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Make unigram cache optional #1763

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@wangrunji0408 wangrunji0408 commented Apr 18, 2025

We observed that the Unigram model's cache introduces significant contention overhead under multi-threaded scenarios. To mitigate this, we made the Unigram cache optional following BPE model's approach. Users can now disable it via resize_cache(0). Additionally, we added TokenizerImpl::get_model_mut to obtain a mutable reference of model.

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@ArthurZucker ArthurZucker left a comment

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Sorry for my late review! happy to merge, can you also update the python bindings to expose this in python as well! Can come in handy!

Comment on lines +605 to 610
/// Get a mutable reference to the model
pub fn get_model_mut(&mut self) -> &mut M {
&mut self.model
}

/// Set the added vocabulary.
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as this is unused here I would not put it in this PR!

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2 participants