Heyang Sun is an AI engineer with six years of experience specializing in deploying and optimizing LLMs on Intel hardware, and is a core author of the popular IPEX LLM open-source project (6k+ stars). He combines hands-on ML engineering and DevOps skills—building Kubernetes integrations, SGX device plugins, CI/CD for model training, and distributed CPU/MPU inference pipelines using OneCCL and Intel MPI. At Intel he delivered practical optimizations like NF4 QLoRA, low-bit speculative decoding, and tensor-parallel inference used by major customers including Azure, Tencent, and Alibaba Cloud. Comfortable across system-level C++ work and higher-level ML tooling, he has moved models from research code into production on Xeon, Arc, Flex/Max GPUs and AI-PCs. Notably, he focuses on compute-aware finetuning and inference on constrained/heterogeneous Intel XPU setups—a niche that often gets overlooked in cloud-first AI teams. Based in Hong Kong, he prefers engineering roles focused on systems and model deployment rather than pure data analysis.
6 years of coding experience
1 year of employment as a software developer
Bachelor of Engineering - BE Software Engineering, Bachelor of Engineering - BE Software Engineering at Southeast University
Accelerate local LLM inference and finetuning (LLaMA, Mistral, ChatGLM, Qwen, DeepSeek, Mixtral, Gemma, Phi, MiniCPM, Qwen-VL, MiniCPM-V, etc.) on Intel XPU (e.g., local PC with iGPU and NPU, discrete GPU such as Arc, Flex and Max); seamlessly integrate with llama.cpp, Ollama, HuggingFace, LangChain, LlamaIndex, vLLM, DeepSpeed, Axolotl, etc.
Role in this project:
DevOps Engineer & ML Engineer
Contributions:283 reviews, 132 commits, 509 PRs in 1 year 4 months
Contributions summary:Heyang primarily contributed to the deployment and finetuning of Large Language Models (LLMs) on Intel XPU platforms, with a focus on Kubernetes integration, including the addition of SGX device plugins and addressing related deployment issues. They also worked on optimizing and configuring QLoRA finetuning on CPU platforms and integrated deepspeed for distributed CPU inference. The user's contributions include improvements to various examples, and the setup of CI/CD pipelines for model training and deployment, leveraging tools like OneCCL and Intel MPI.
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