numba cuda simulation problem

[yxqd]

https://github.com/mcvine/acc/runs/3951616215

when running the test with NUMBA_ENABLE_CUDASIM=1

Traceback (most recent call last):
  File "tests/geometry/test_onbox.py", line 11, in <module>
    if __name__ == '__main__': main()
  File "tests/geometry/test_onbox.py", line 8, in main
    onbox.test_cu_intersect_box()
  File "/usr/share/miniconda/envs/testenv/lib/python3.8/site-packages/mcvine/acc/geometry/onbox.py", line 106, in test_cu_intersect_box
    ts_cu = cu_intersect_box(
  File "/usr/share/miniconda/envs/testenv/lib/python3.8/site-packages/numba/np/ufunc/deviceufunc.py", line 646, in __call__
    callsteps = self._call_steps(self.engine.nin, self.engine.nout,
  File "/usr/share/miniconda/envs/testenv/lib/python3.8/site-packages/numba/np/ufunc/deviceufunc.py", line 759, in __init__
    self._is_device_array = [self.is_device_array(a) for a in self.args]
  File "/usr/share/miniconda/envs/testenv/lib/python3.8/site-packages/numba/np/ufunc/deviceufunc.py", line 759, in <listcomp>
    self._is_device_array = [self.is_device_array(a) for a in self.args]
  File "/usr/share/miniconda/envs/testenv/lib/python3.8/site-packages/numba/cuda/dispatcher.py", line 98, in is_device_array
    return cuda.is_cuda_array(obj)
AttributeError: module 'numba.cuda' has no attribute 'is_cuda_array'
Error: Process completed with exit code 1.

Refs:

• acc/acc/geometry/onbox.py

  Line 57 in ef4b0a3

  @numba.guvectorize(

• numba team has a ticket with a smaller/cleaner test script: cudasim breaks ufunc. missing is_cuda_array numba/numba#7505

[yxqd]

Current workaround:

• Test device function with CUDASIM
• Test guvectorize with CUDA
  See https://github.com/mcvine/acc/blob/7d4fc02509df5a5f2332f74855ba4c58435c9a1a/tests/geometry/test_onbox.py for an example