Hi, I'm Ruixiang 👋

I am Senior DevTech Engineer at NVIDIA.

🚀 Recent Open Source Contributions

llama.cpp

• #23869 — Speed-bench: standardized speculative decoding performance evaluation benchmark
• #18039 — Eagle3 speculative decoding: 1.2–3.28× speedup across many model families
• #24593 — Support Eagle3 for qwen3.5 & 3.6 achieving up to 1.94x speedup
• #22105 — DFlash speculative decoding: up to 8× speedup on Qwen3 models
• #24536 — Add speculative decoding metrics for better observability and parameters tuning
• #24655 — Support GPU-backend sampling to improve Eagle3 performance

HuggingFace Transformers

• #45665 — Performance fix: eliminated implicit H2D copies in Gated DeltaNet

Unsloth

• This NVIDIA-Unsloth blog explains the following optimizations in detail.
• #534 — Double-buffered checkpoint reload via CUDA streams + events, +8.4% on 8B, +6.7% on 14B fine-tuning speedup
• #4173 — Packed-sequence metadata caching, +14.3% fine-tuning speedup on Qwen3-14B QLoRA SFT
• #535 — GPT-OSS MoE expert routing optimization, ~10-15% fine-tuning speedup on GPT-OSS models

✍️ Technical Writing — NVIDIA Developer Blog

Model Quantization Series:

1. Concepts, Methods, and Why It Matters
2. Post-Training Quantization Using NVIDIA Model Optimizer
3. Turn FP8 Checkpoints into High-Performance Inference Engines with NVIDIA TensorRT