FluidPD shifts existing GPU capacity to protect LLM latency targets

The system moves work and worker roles between prefill and decoding as demand changes, without adding GPUs or restarting serving engines.

Big Tech
Kartik Ramesh · Kaidi Fu · Zihan Zheng · Jiahuan Yu · Fabio Oliveira · Carlos Costa · +1 more

University of Illinois Urbana-Champaign · IBM Research

Research Digest··2 min read
Ramesh et al.

The authors built FluidPD, a serving system that reallocates capacity between the two stages of LLM inference.

Why this paper

From IBM Research and University of Illinois Urbana-Champaign

In one line

FluidPD improves SLO attainment by up to 94.6 percentage points over static SGLang without adding GPU workers.

What we could check

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  • ·No stated limitations found
  • ✓Reports numbers on named benchmarks

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