accelerate

65f83e49 - Reduce key merging overhead in OffloadedWeightsLoader (#4281)

Reduce key merging overhead in OffloadedWeightsLoader (#4281) * perf: make offloaded weight key merging linear * Update tests/test_offload.py --------- Co-authored-by: Marc Sun <57196510+SunMarc@users.noreply.github.com>