GPU multiplexer hits 0.3ms switching on K80s

// 72d agoINFRASTRUCTURE

GPU multiplexer hits 0.3ms switching on K80s

Developer dcHerrera built a $200 system using a BTC-S37 mining board and three NVIDIA K80 cards, leveraging a custom Linux kernel module to multiplex 6 GPU dies through a single PCIe slot. The setup achieves near-instantaneous 0.3ms model switching and provides 72GB of VRAM for high-speed inference.

// ANALYSIS

This project demonstrates advanced hardware repurposing by turning obsolete mining gear into high-performance inference nodes via runtime PCI BAR reprogramming. By multiplexing six GPU dies through a single PCIe slot, the system enables sub-millisecond model switching and provides 72GB of VRAM for just $200, bypassing the standard software stack for improved legacy performance.

// TAGS

gpuinferenceopen-sourceedge-aillmfoundry-6-gpu-multiplexer

DISCOVERED

72d ago

2026-03-18

PUBLISHED

72d ago

2026-03-18

RELEVANCE

8/ 10

AUTHOR

Electrical_Ninja3805

// KEEP READING

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