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Update save.py

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This commit is contained in:
Daniel Han-Chen 2024-02-05 18:53:27 +11:00
commit 797a87a3e3
1 changed files with 11 additions and 11 deletions
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unsloth/save.py
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@ -87,18 +87,18 @@ def _merge_lora(layer, name, max_vram):
# First check if memory has been exceeded
# If yes, move over to CPU to do computation.
nbytes = W.numel() * 4 # float32 4 bytes
# if (torch.cuda.memory_allocated() + nbytes) >= max_vram:
# W = W.to("cpu", non_blocking = True)
# out_of_memory = True
# pass
if (torch.cuda.memory_allocated() + nbytes) >= max_vram:
W = W.to("cpu", non_blocking = True, copy = True)
out_of_memory = True
pass
W = W.to(torch.float32).t()
if A is not None:
# sAB = (A.t().to(torch.float32) @ (s * B.t().to(torch.float32)))
# W += sAB
if out_of_memory:
A = A.to("cpu", non_blocking = True)
B = B.to("cpu", non_blocking = True)
A = A.to("cpu", non_blocking = True, copy = True)
B = B.to("cpu", non_blocking = True, copy = True)
pass
W.addmm_(A.t().to(torch.float32), B.t().to(torch.float32), alpha = s)
# if not torch.isfinite(W).all():
@ -389,11 +389,11 @@ def unsloth_save_model(
# Save to GPU memory
state_dict[name] = W
# [TODO] Saving to RAM seems to leak memory???
# elif (max_ram - W.nbytes) > 0:
# # Save to CPU memory
# logger.warning_once(f"We will save to RAM and not VRAM now.")
# state_dict[name] = W.to("cpu", non_blocking = True)
# max_ram = max(max_ram - W.nbytes, 0)
elif (max_ram - W.nbytes) > 0:
# Save to CPU memory
logger.warning_once(f"We will save to RAM and not VRAM now.")
state_dict[name] = W.to("cpu", non_blocking = True, copy = True)
max_ram = max(max_ram - W.nbytes, 0)
else:
# Save to Disk
logger.warning_once(f"We will save to Disk and not RAM now.")