Track Physim AMD regression in genesis-world 0.4.5

[MioYuuIH]

Summary

Physim Lab 1 fails on AMD/ROCm when genesis-world==0.4.5 is used.

Reproduction

In the Physim image, the following sequence reproduces the failure on AMD GPUs:

• gs.init(backend=gs.amdgpu, theme=\"light\") succeeds
• scene = gs.Scene(show_viewer=False) succeeds
• scene.build() fails

Observed errors

With genesis-world==0.4.5:

1. ModuleNotFoundError: No module named 'cuda'
2. After installing cuda-python, scene.build() still fails with:
   TypeError: unsupported operand type(s) for /=: 'NoneType' and 'float'

Traceback points to genesis/engine/solvers/rigid/rigid_solver.py, where cuda.bindings.runtime is queried during scene.build().

Validation

• The same Physim pod works with:
  • torch==2.9.1+rocm7.11.0
  • torchvision==0.24.0+rocm7.11.0
  • torchaudio==2.9.0+rocm7.11.0
• Downgrading only genesis-world from 0.4.5 to 0.4.3 makes scene.build() succeed.

Upstream context

• Upstream issue: [Bug]: cuda.bindings not available for AMDGPU/ROCm Genesis-Embodied-AI/Genesis#2662
• Upstream fix PR: [BUG FIX] Fix support of AMDGPU. Genesis-Embodied-AI/Genesis#2664

Current workaround

Pin Physim to genesis-world==0.4.3 until an upstream Genesis release includes the fix from PR #2664.

Follow-up

• Track the first upstream Genesis release that includes PR #2664
• Re-test Physim on AMD/ROCm when that release is available
• Remove the temporary 0.4.3 pin after validation