Skip to content

PerceptualLoss Bug #8412

Closed
Closed

Description

@CugAgo

Describe the bug
When I use PerceptualLoss, if the loss is too low, it may occur "RuntimeError: Function ‘SqrtBackward0‘ returned nan values in its 0th output", I will provide the specific error location later.

Environment

MONAI version: 1.4.0
Numpy version: 1.26.4
Pytorch version: 2.4.0+cu118
MONAI flags: HAS_EXT = False, USE_COMPILED = False, USE_META_DICT = False
MONAI rev id: 46a5272
MONAI file: //miniconda3/envs/monai/lib/python3.10/site-packages/monai/init.py

Optional dependencies:
Pytorch Ignite version: NOT INSTALLED or UNKNOWN VERSION.
ITK version: NOT INSTALLED or UNKNOWN VERSION.
Nibabel version: NOT INSTALLED or UNKNOWN VERSION.
scikit-image version: NOT INSTALLED or UNKNOWN VERSION.
scipy version: 1.15.2
Pillow version: 11.1.0
Tensorboard version: 2.19.0
gdown version: NOT INSTALLED or UNKNOWN VERSION.
TorchVision version: 0.19.0+cu118
tqdm version: 4.67.1
lmdb version: NOT INSTALLED or UNKNOWN VERSION.
psutil version: 7.0.0
pandas version: NOT INSTALLED or UNKNOWN VERSION.
einops version: 0.8.1
transformers version: NOT INSTALLED or UNKNOWN VERSION.
mlflow version: NOT INSTALLED or UNKNOWN VERSION.
pynrrd version: NOT INSTALLED or UNKNOWN VERSION.
clearml version: NOT INSTALLED or UNKNOWN VERSION.

Activity

  1. cvbourne commented on Apr 7, 2025

    @cvbourne

    Perhaps related to this issue? https://github.com/richzhang/PerceptualSimilarity/pull/139/files

    @CugAgo Please provide an error location and if it's the same root cause, I'll submit a PRQ (if this is a 👍 issue for a first time contributor).

  2. CugAgo commented on Apr 7, 2025

    @CugAgo
    Author

    也许与此问题有关?https://github.com/richzhang/PerceptualSimilarity/pull/139/files

    请提供错误位置,如果是相同的根本原因,我将提交 PRQ(如果这是👍第一次贡献者的问题)。

    yes, I'm sorry for forgetting to provide accurate error information yesterday. In the normalize_tensor function, I think this bug can be fixed through this method, good job!

  3. cvbourne commented on Apr 7, 2025

    @cvbourne

    Great. #8414

  4. CugAgo commented on Apr 8, 2025

    @CugAgo
    Author

    May I ask when this source code will be updated to the MONAI library? Can I update the corresponding version through pip

  5. added a commit that references this issue on Aug 25, 2026
    7c651e9
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Assignees

No one assigned

    Labels

    No labels
    No labels

    Type

    No type

    Projects

    No projects

      Milestone

      No milestone

      Relationships

      None yet

      Development

      No branches or pull requests

      Issue actions