pytorch / pytorch/executorch

Partial weight loading for reduced RAM utilization

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#5,626 2 comments 0 reactions 1 assignee View on GitHub

@iseeyuan is already working on this.

Since Sep 25, 2024.

module: runtime triaged
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Description

🚀 The feature, motivation and pitch

I'm trying to use Executorch for running LLM's on low powered(low RAM) devices. I would like all the weights to not be loaded into RAM when the model is loaded initially. As and when the forward pass is happening new weights to be loaded and the model to be executed to improve RAM utilization.

This can be further extended by predicting which sparse weights to load as described in Apple's paper LLM in a flash, which has seen a inference speed-up along with less RAM usage
Link here
@iseeyuan

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