Error when generating multiple coverage maps from a given set of .xml scenes

[pablosreyero]

Hello,

I'm trying to generate multiple coverage maps according to a set of previously created scenes and given a BS dataset. The thing is that everything runs normally, but after 5 minutes the kernel of the JupyterNotebook dies and this message pops up:

The first thing that came to my mind was that I was running out of mem (because I've gone through this problem multiple times). Nevertheless, and just in case, I've implemented additional code to cope with the potential memory leakages. Neither of these lines worked out and the kernel kept dying/restarting. For this reason, I decided to move out from JupyterNotebook, and started to use VSCode instead (where I'm not using any GPU). Similarly to my old JupyterNotebook environment, the simulation crashed, but this time I got the following output error:

Traceback (most recent call last):
  File "/home/pablo/Documents/computing_coverage_maps/computing_coverage_maps.py", line 212, in <module>
    main()
  File "/home/pablo/Documents/computing_coverage_maps/computing_coverage_maps.py", line 118, in main
    scene = sionna.rt.load_scene(xml_file[0])
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/pablo/anaconda3/envs/sionna019/lib/python3.11/site-packages/sionna/rt/scene.py", line 2050, in load_scene
    return Scene(filename, dtype=dtype)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/pablo/anaconda3/envs/sionna019/lib/python3.11/site-packages/sionna/rt/scene.py", line 172, in __init__
    self._solver_paths = SolverPaths(self, dtype=dtype)
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/pablo/anaconda3/envs/sionna019/lib/python3.11/site-packages/sionna/rt/solver_base.py", line 159, in __init__
    face_indices3 = s.face_indices(dr.arange(mi.UInt32, s.face_count()))
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
RuntimeError: jit_var_mul(r0, r8175205): operands have incompatible sizes! (sizes: 0, 1)

It seems that the error is coming from the scene = sionna.rt.load_scene(xml_file[0]) line(after trying to load the scene) hence, I've checked multiple times that the .xml exists and that it is not corrupted. I've noticed that in most cases, I only plot 3 coverage maps (corresponding to 3 BS sectors) but when I reach a BS with 4 sectors, the simulation crashes. Help on this matter would be much appreciated.

Here's my code ((sorry for the dirty coding)):
cm_code.txt

Cheers,
Pablo.-

BTW, I'm using an NVIDIA A30 and Sionna 0.19 inside a venv created with Anaconda (I installed the required packages with the provided requirements.txt)

[merlinND]

Hello @pablosreyero,

Are you encountering this crash when a specific scene is used? If you can identify a problematic scene and share it (including the XMl file and all meshes), we could look into it more.