Atom: Low-bit Quantization for Efficient and Accurate LLM Serving
The growing demand for Large Language Models (LLMs) in applications such as
content generation, intelligent chatbots, and sentiment analysis poses
considerable challenges for LLM service providers. To efficiently use GPU
resources and boost throughput, batching multiple requests has emerged as a
popular paradigm; to further speed up batching, LLM quantization techniques
reduce memory consumption and increase computing capacity. However, prevalent
quantization schemes (e.g., 8-bit weight-activation quantization) cannot fully
leverage the capabilities of modern GPUs, such as 4-bit integer operators,
resulting in sub-optimal performance.
  To maximize LLMs' serving throughput, we introduce Atom, a low-bit
quantization method that achieves high throughput improvements with negligible
accuracy loss. Atom significantly boosts serving throughput by using low-bit
operators and considerably reduces memory consumption via low-bit quantization.
It attains high accuracy by applying a novel mixed-precision and fine-grained
quantization process. We evaluate Atom on 4-bit weight-activation quantization
setups in the serving context. Atom improves end-to-end throughput by up to
7.73times compared to the FP16 and by 2.53times compared to INT8
quantization, while maintaining the same latency target.
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Yilong Zhao
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2023-11-07T11:20:52.551Z
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Yilong Zhao
user
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Chien-Yu Lin
admin_assigned
2023-10-31T10:33:33.415Z
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Chien-Yu Lin
user
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Kan Zhu
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Zihao Ye
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2023-10-31T10:33:49.784Z
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Zihao Ye
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Lequn Chen
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2023-10-31T10:33:56.655Z
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Lequn Chen
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Size Zheng
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2023-10-31T10:34:03.611Z
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Size Zheng
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ZCHNO
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Luis Ceze
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Arvind Krishnamurthy
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Tianqi Chen
claimed_verified
2023-10-31T15:04:46.324Z
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Tianqi Chen
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Baris Kasikci
claimed_verified
2023-10-31T17:02:05.536Z
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Baris Kasikci
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kasikci
Atom: Low-bit Quantization for Efficient and Accurate LLM Serving
The growing demand for Large Language Models (LLMs) in applications such as
content generation, intelligent chatbots, and sentiment analysis poses
considerable challenges for LLM service providers. To efficiently use GPU
resources and boost throughput, batching multiple requests has emerged as a
popular paradigm; to further speed up batching, LLM quantization techniques
reduce memory consumption and increase computing capacity. However, prevalent
quantization schemes (e.g., 8-bit weight-activation quantization) cannot fully
leverage the capabilities of modern GPUs, such as 4-bit integer operators,
resulting in sub-optimal performance.
  To maximize LLMs' serving throughput, we introduce Atom, a low-bit
quantization method that achieves high throughput improvements with negligible
accuracy loss. Atom significantly boosts serving throughput by using low-bit
operators and considerably reduces memory consumption via low-bit quantization.
It attains high accuracy by applying a novel mixed-precision and fine-grained
quantization process. We evaluate Atom on 4-bit weight-activation quantization
setups in the serving context. Atom improves end-to-end throughput by up to
7.73times compared to the FP16 and by 2.53times compared to INT8
quantization, while maintaining the same latency target.
Atom is a low-bit quantization method that enhances LLM serving throughput with minimal accuracy loss by utilizing low-bit operators and a mixed-precision process.
Large Language Models LLMs GPU batching quantization memory consumption 4-bit integer operators serving throughput low-bit operators mixed-precision fine-grained quantization FP16 INT8 quantization latency target