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FIX BEFT merge on bias-less layers; RandLoRA save_projection default #3227

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FIX BEFT merge on bias-less layers; RandLoRA save_projection default #3227

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FIX BEFT merge on bias-less layers; RandLoRA save_projection default
kashif May 12, 2026
b36387c
FIX BEFT unload restores bias-less layers to original state
kashif May 12, 2026
5e4a16d
FIX BEFT never modifies base layer bias; restore original test expect…
kashif May 12, 2026
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8 changes: 5 additions & 3 deletions src/peft/tuners/randlora/config.py
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Expand Up @@ -103,12 +103,14 @@ class RandLoraConfig(PeftConfig):
},
)
save_projection: bool = field(
default=True,
default=False,
metadata={
"help": (
"Whether to save the basis_A / basis_B projections in the state dict alongside per layer lambda / "
"gamma weights. This will increase the size of the checkpoint, but guarantee that we can reload "
"the checkpoint on all system configurations."
"gamma weights. When False (default), projections are regenerated deterministically from "
"`projection_prng_key` on load, keeping checkpoints small (only lambda/gamma are saved). "
"Set to True only if you need to load the checkpoint on a system where the projection cannot "
"be reproduced (e.g. different PyTorch version with changed RNG behaviour)."
)
},
)
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