Unverified50% confidenceFactExact time
对于MuJoCo、Atari等环境，单个环境的采样速度往往跟不上GPU计算能力，导致GPU利用率长期停留在20%–40%甚至更低
1
Sources
50%
Confidence
Long-term
Relevance
7/12/2026
First Seen
Sources
Practical RL Compute Optimization: Core Strategies to Boost CPU and GPU Utilization
redditr/reinforcementlearning7/10/2026
Related Claims
UnverifiedDuring the autoregressive decoding phase, GPU compute utilization is often less than 10%, making it a memory-intensive operation.74% similarUnverifiedWhen AI clusters scale to tens of thousands of GPUs, overall efficiency can plummet to below 40%, with more than half of computing power consumed in data transmission and waiting.72% similarUnverifiednvidia-smi报告的GPU利用率本质上只统计采样时间窗口内GPU上至少有一个内核在执行的时间占比，而非计算资源的实际占用率71% similarUnverifiedDuring large model inference, actual GPU utilization is often less than 10%.70% similarUnverifiedDuring testing, only 1 of the 4 GPUs reached a utilization rate of approximately 10%–13%, while the rest were nearly idle, and CPU usage was as high as approximately 50%.70% similar
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