NVIDIA/physicsnemo

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Open-source deep-learning framework for building, training, and fine-tuning deep learning models using state-of-the-art Physics-ML methods

Stars: 3.3k
Forks: 787
Open beginner issues: 0
Indexed issues: 18
Avg merge: 2d 21h
Merged PRs (30d): 27

Dominant language: Python
License: Apache-2.0
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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18 open issues indexed

🐛[BUG]: power_spectrum in metrics.general puts the zero frequency half a cell off along an odd width Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

NVIDIA/physicsnemo#2007 · Opened Sep 18, 2026
🐛[BUG]: cdf in metrics.general.histogram drops earlier inputs from the last cumulative bin Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

NVIDIA/physicsnemo#2005 · Opened Sep 18, 2026
🐛[BUG]: Variance in metrics.general.ensemble_metrics ignores the dim argument Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

NVIDIA/physicsnemo#2003 · Opened Sep 18, 2026
GradientsFiniteDifference/GradientsSpectral (and PhysicsInformer) silently assume a periodic domain — non-periodic BCs get a wrong residual at the boundary with no warning Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

NVIDIA/physicsnemo#2001 · 1 comment · Opened Sep 17, 2026
🐛[BUG]: AeroJEPA ignores unbatched TokenSet masks and decode_field_chunked accepts invalid arguments Open

Difficulty 4/5 3-5 days Newbie friendliness 68/100

NVIDIA/physicsnemo#1998 · Opened Sep 17, 2026
🐛[BUG]: ValueError: infer_schema(func) in @torch.library.custom_op due to stringified type annotations (from __future__ import annotations) Open

? - Needs Triage bug

NVIDIA/physicsnemo#1990 · 1 assignee · Opened Sep 14, 2026
🐛[BUG]: torch.compile + ShardTensor failures with regional model recipe Open

? - Needs Triage bug

Difficulty 5/5 Over a week Newbie friendliness 32/100

NVIDIA/physicsnemo#1986 · 3 comments · Opened Sep 11, 2026
DistributedManager initialization fails on CPU-only hosts Open

Difficulty 4/5 3-5 days Newbie friendliness 68/100

NVIDIA/physicsnemo#1936 · Opened Aug 19, 2026
DiffusionUNet3D cannot run under torch.autocast (amp_mode is not exposed) Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

NVIDIA/physicsnemo#1935 · Opened Aug 19, 2026
🐛[BUG]: DefaultTrainingLoop performs two optimizer steps per minibatch with static capture Open

? - Needs Triage bug

Difficulty 3/5 1-2 days Newbie friendliness 78/100

NVIDIA/physicsnemo#1911 · Opened Aug 12, 2026
🚀[FEA]: Add non-periodic boundary mode to grid-gradient operators Open

? - Needs Triage enhancement

Difficulty 4/5 3-5 days Newbie friendliness 55/100

NVIDIA/physicsnemo#1852 · Opened Jul 17, 2026
🚀[FEA]: PhysicsNeMo-Mesh Code Cleanups Open

1 - On Deck enhancement

NVIDIA/physicsnemo#1851 · 1 assignee · Opened Jul 17, 2026
Example request: gray-box discovery of an unknown PDE term Open

stale

Difficulty 3/5 1-2 days Newbie friendliness 68/100

NVIDIA/physicsnemo#1834 · 1 comment · Opened Jul 13, 2026
🚀[FEA]: Add hydrology example — attribute-conditioned physics-UDE across a 61-well aquifer (already-working PhysicsNeMo port) Open

stale

Difficulty 5/5 Over a week Newbie friendliness 35/100

NVIDIA/physicsnemo#1832 · 1 comment · Opened Jul 11, 2026
Move HealDA-v2 Triton kernels from experimental to nn.functional Open

stale

Difficulty 4/5 3-5 days Newbie friendliness 55/100

NVIDIA/physicsnemo#1824 · 2 comments · Opened Jul 10, 2026
ShardTensor is not torch.compile-able: graph break in from_local resumes mid-construction before _spec is attached Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

NVIDIA/physicsnemo#1796 · 2 comments · Opened Jul 6, 2026
🚀[FEA]: allow control over checkpoint filename format in `save_checkoint` Open

enhancement

NVIDIA/physicsnemo#1175 · 5 comments · 1 assignee · Opened Oct 23, 2025
🚀[FEA]: allow renaming state-dict keys in from_checkpoint when loading backward-compatible checkpoints Open

enhancement

NVIDIA/physicsnemo#1173 · 5 comments · 1 assignee · Opened Oct 23, 2025

NVIDIA/physicsnemo

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