A New NVIDIA Research Shows Speculative Decoding in NeMo RL Achieves 1.8× Rollout Generation Speedup at 8B and Projects 2.5× End-to-End Speedup at 235B
1.8×. That's the rollout speedup NVIDIA just achieved by baking speculative decoding into NeMo RL—and it projects 2.5× at scale.

Why it matters
NVIDIA Research demonstrates a lossless inference optimization technique that materially improves training efficiency for large language models, with direct implications for LLM training cost and timeline competitiveness.
The key facts
5 to know1.8× rollout generation speedup at 8B model scale
2.5× projected end-to-end speedup at 235B model scale
Speculative decoding integrated into NeMo RL with vLLM backend
Lossless acceleration (no capability loss)
Published as NVIDIA Research paper
Go to the source
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Publisher excerpt: A new paper from NVIDIA Research integrates speculative decoding directly into NeMo RL with a vLLM backend, delivering lossless rollout acceleration at both 8B and projected 235B model scales. The post A New NVIDIA Research Shows Speculative Decoding in NeMo RL Achieves 1.8× Rollout Generation…