AINeutralarXiv – CS AI · 6h ago6/10
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Memory-Bound but Not Bandwidth-Limited: The Physical AI Inference Gap in Batch-1 LLM Decode
A technical study reveals that batch-1 LLM inference on edge devices and robots is constrained by GPU launch overhead rather than memory bandwidth alone, with faster GPUs like the H100 achieving only 27% of theoretical peak bandwidth compared to 81% on slower L4 GPUs. Quantization techniques show inconsistent speedups, suggesting that hardware improvements don't automatically translate to latency gains without addressing software bottlenecks in physical AI deployments.
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