Quantization for Efficient OpenPangu Deployment on Atlas A2
Published:Dec 29, 2025 10:50
•1 min read
•ArXiv
Analysis
This paper addresses the computational challenges of deploying large language models (LLMs) like openPangu on Ascend NPUs by using low-bit quantization. It focuses on optimizing for the Atlas A2, a specific hardware platform. The research is significant because it explores methods to reduce memory and latency overheads associated with LLMs, particularly those with complex reasoning capabilities (Chain-of-Thought). The paper's value lies in demonstrating the effectiveness of INT8 and W4A8 quantization in preserving accuracy while improving performance on code generation tasks.
Key Takeaways
- •Low-bit quantization (INT8 and W4A8) is effective for optimizing openPangu models on the Atlas A2.
- •INT8 quantization provides a good balance between accuracy and speedup (1.5x prefill speedup).
- •W4A8 quantization offers significant memory reduction with a moderate accuracy trade-off.
- •The research focuses on efficient deployment of LLMs with Chain-of-Thought reasoning on Ascend NPUs.
Reference
“INT8 quantization consistently preserves over 90% of the FP16 baseline accuracy and achieves a 1.5x prefill speedup on the Atlas A2.”