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ChunkLLM: A Lightweight Framework for Accelerating Large Language Model Inference

By

PaulHoule

7mo ago· 2 min readenInsight

Summary

ChunkLLM is a lightweight, pluggable framework designed to accelerate large language model inference by addressing computational inefficiencies in Transformer-based models. The framework introduces two key components: QK Adapter for feature compression and chunk attention acquisition, and Chunk Adapter for detecting chunk boundaries. During training, only these adapters are trained while the backbone model remains frozen. The system uses attention distillation to enhance key chunk recall and triggers chunk selection only at detected boundaries during inference. Experimental results show ChunkLLM maintains 98.64% performance on long-context benchmarks with 48.58% key-value cache retention and achieves up to 4.48x speedup compared to vanilla Transformers on 120K long texts.

Key quotes

· 5 pulled
Transformer-based large models excel in natural language processing and computer vision, but face severe computational inefficiencies due to the self-attention's quadratic complexity with input tokens.
ChunkLLM not only attains comparable performance on short-text benchmarks but also maintains 98.64% of the performance on long-context benchmarks while preserving a 48.58% key-value cache retention rate.
Particularly, ChunkLLM attains a maximum speedup of 4.48x in comparison to the vanilla Transformer in the processing of 120K long texts.
During the training phase, the parameters of the backbone remain frozen, with only the QK Adapter and Chunk Adapter undergoing training.
The former is attached to each Transformer layer, serving dual purposes of feature compression and chunk attention acquisition.
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Transformer-based large models excel in natural language processing and computer vision, but face severe computational inefficiencies due to the self-attention's quadratic complexity with input tokens. Recently, researchers have proposed a series of metho

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