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WEIXILIN0307/README.md

Hi, I'm WEIXI LIN

I'm a master's student in Computer Technology at Northwestern Polytechnical University (NWPU). I work on efficient LLM inference and training systems, with a focus on runtime performance, GPU/NPU kernels, and KV cache management.

I'm looking for internships in LLM inference optimization and AI systems, remote or on-site.

Email · GitHub

Open-source contributions

Merged

  • verl-omni: Added CPU placement for native reward models (#694) and migrated the SD3.5 OCR recipe to named rewards (#695).
  • vLLM-Omni: Added remote SeedVR2 video restoration for ComfyUI (#8505).

In progress

  • Megatron-LM: Activation offloading for GDN recurrence (#7908), plus work on GDN2 and CUDA Graph support (#8308).
  • SGLang-Omni: PersonaPlex streaming and startup improvements, including incremental history, warmup, and device-resident audio codes.
  • vLLM: Multimodal prefix-cache boundary handling for hybrid Mamba models (#56818).
  • Mooncake: Encoder–Prefill–Decode disaggregation and reusable agent state (#2836).

View my upstream pull requests

Selected projects

  • MiniCPM-o on Ascend: Optimized multimodal inference across two NPUs, including CPU/NPU overlap, CANN operators, graph execution, and W8A8 quantization.
  • Efficient VLM inference: Optimized Qwen3-VL-2B with KV cache reuse, projection fusion, Triton kernels, and CUDA Graphs.
  • MetaX C500 kernels: Built and tuned fused quantization kernels with TileLang, profiling, and correctness tests.

Interests and tools

  • LLM inference, multimodal serving, KV and prefix caching
  • Distributed training, activation offloading, and runtime scheduling
  • Quantization, GPU/NPU kernels, profiling, and performance analysis

Python · PyTorch · CUDA · Triton · TileLang · CANN / AscendC · vLLM · llama.cpp

Competitions and awards

  • MiniCPM × Ascend Inference Optimization Challenge: 5th on the public leaderboard
  • IEEE AICAS 2026 Grand Challenge: 7th place
  • CCF Open Source Innovation Competition: Third Prize, Mooncake KVCache
  • Huawei MindSpore Model Development Challenge: 3rd place / Silver, S1-MoE
  • MetaX Open Source Talent Camp: Best Engineering Practice Award

Education

  • Northwestern Polytechnical University: Master's in Computer Technology, 2025–present
  • Shaanxi Normal University: Bachelor's in Software Engineering, 2021–2025

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