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Debug: num_items_in_batch on a different device from loss. #147

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Debug: num_items_in_batch on a different device from loss. #147

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6 changes: 5 additions & 1 deletion unsloth_zoo/loss_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@
from triton import __version__ as triton_version
major, minor = torch.cuda.get_device_capability()
import inspect
from typing import Union

global HAS_CUT_CROSS_ENTROPY
global UNSLOTH_STUDIO_ENABLED
Expand Down Expand Up @@ -159,12 +160,15 @@ def fused_linear_cross_entropy(
hidden_states : torch.Tensor,
lm_weight : torch.Tensor,
labels : torch.Tensor,
num_items_in_batch : int = None,
num_items_in_batch : Union[int, torch.Tensor] = None,
ignore_index : int = -100,
reduction : str = "mean",
logit_softcapping : float = 0,
accuracy_threshold : str = "auto",
):
if isinstance(num_items_in_batch, torch.Tensor):
num_items_in_batch = num_items_in_batch.detach().cpu().item() # `torch.Tensor` -> `int`.

# All Unsloth Zoo code licensed under LGPLv3
reduction = "sum" if num_items_in_batch is not None else "mean"
if logit_softcapping == 0: logit_softcapping = None
Expand Down