Author

Niklas Enskat

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Preprint Aug 2026

Evaluating MFU as a Proxy for GPU Power for Energy-Aware Simulation of LLM Training

This work evaluates whether Model FLOPs Utilization (MFU) can serve as a portable, software-defined predictor of GPU power for LLMs, finding that a linear MFU-based power model fits every tested GPU as long as the workload is compute-bound, as in production LLM training.

Niklas Enskat, Philipp Wiesner · 1 citation · ⚡1