Problem with "scene.preview()"

[StrongWeiUMN]

Dear Sionna community,

First of all, thank you for providing this helpful tool.

I am currently running Sionna_Ray_Tracing_Tutorial in the Jupyter Lab environment. I faced some problems:

1. The Tensorflow installed via pip install sionna cannot detect any GPU, while directly running pip install tensorflow works. So I have to manually re-install the TensorFlow after installing the Sionna.
   my GPU Driver Version: 512.78 CUDA Version: 11.6

2. scene.preview() will raise error:

[Open Browser Console for more detailed log - Double click to close this message]
Model class 'RendererModel' from module 'jupyter-threejs' is loaded but can not be instantiated
TypeError: Cannot read properties of undefined (reading 'then')
    at http://localhost:8888/lab/extensions/jupyter-threejs/static/jupyter-threejs-chunk.75bff6c5b3e16e2f7d65.js?v=75bff6c5b3e16e2f7d65:1:32057
    at async Promise.all (index 20)
    at async f._make_model (http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/150.267f129ae5fd6a33b390.js?v=267f129ae5fd6a33b390:1:7925)

The following is the jupyter information:

jupyter-client            8.1.0                    pypi_0    pypi
jupyter-core              5.3.0                    pypi_0    pypi
jupyter-events            0.6.3                    pypi_0    pypi
jupyter-server            2.5.0                    pypi_0    pypi
jupyter-server-fileid     0.8.0                    pypi_0    pypi
jupyter-server-terminals  0.4.4                    pypi_0    pypi
jupyter-server-ydoc       0.8.0                    pypi_0    pypi
jupyter-ydoc              0.2.3                    pypi_0    pypi
jupyterlab                3.6.2                    pypi_0    pypi
jupyterlab-pygments       0.2.2                    pypi_0    pypi
jupyterlab-server         2.21.0                   pypi_0    pypi
jupyterlab-widgets        3.0.6                    pypi_0    pypi

Do you have any ideas on how to solve it?

Thanks a lot!

[gmarcusm]

Thanks for the report. Can you please provide: - platform (linux/macos/windows) - tensorflow versions (before/after) Guillermo

[StrongWeiUMN]

Platform: Linux and Windows
Tensorflow via pip install sionna: 2.11 (cannot detect gpu)
Tensorflow via conda install tensorflow-gpu: 2.6 (works for gpu)

The TensorFlow environment after running pip install sionna and conda install tensorflow-gpu:

tensorboard               2.11.2                   pypi_0    pypi
tensorboard-data-server   0.6.1            py39haa95532_0
tensorboard-plugin-wit    1.8.1            py39haa95532_0
tensorflow                2.6.0           gpu_py39he88c5ba_0
tensorflow-base           2.6.0           gpu_py39hb3da07e_0
tensorflow-estimator      2.11.0                   pypi_0    pypi
tensorflow-gpu            2.6.0                h17022bd_0
tensorflow-intel          2.11.1                   pypi_0    pypi
tensorflow-io-gcs-filesystem 0.31.0                   pypi_0    pypi
cudatoolkit               11.3.1               h59b6b97_2
cudnn                     8.2.1                cuda11.3_0

Do you know what is the reason for the "scene.preview()" listed above?

Thank you!

[merlinND]

Hello @StrongWeiUMN,

Could you please try upgrading the following modules to the latest versions?

python3 -m pip install --upgrade jupyterlab ipywidgets pythreejs

Make sure to fully restart the Jupyter server (not just the notebook kernel) after the upgrade.

The error that you encounter with scene.preview() was fixed in version 2.4.2 of pythreejs (see jupyter-widgets/pythreejs#389 (comment)).

[StrongWeiUMN]

Hi @merlinND,

It still does not work. I think it is already the latest version: pythreejs==2.4.2

I created a new environment with JupyterLab installed only and tried to run some examples from pythreejs website. It still raises same error:

Model class 'RendererModel' from module 'jupyter-threejs' is loaded but can not be instantiated

I tried two machines (Win OS and Linux OS), but all failed.

[StrongWeiUMN]

@merlinND
I think the problem comes from the pythreejs. The default installed package version may mismatch.
Would you mind letting me know your pythreejs, jupyterlab, and jupter labextension version?

[merlinND]

Hi @StrongWeiUMN,

I agree that it should be a matter of pythreejs version and compatibility with the other modules. I've listed the versions I'm using (successfully) in a virtual environment with Python 3.10.6 on Ubuntu.

ipydatawidgets                    4.3.3
ipykernel                        6.21.2
ipython                          7.34.0
ipywidgets                        8.0.4
jupyter                           1.0.0
jupyter-core                      5.2.0
jupyterlab                        3.6.1
jupyterlab-widgets                3.0.5
jupyter-contrib-nbextensions      0.7.0
notebook                          6.5.2 
pythreejs                         2.4.2

Hope this helps!

[StrongWeiUMN]

@merlinND Yes, it works!!!

I run pip install ipydatawidgets==4.3.3 ipykernel==6.21.2 ipython==7.34.0 ipywidgets==8.0.4 jupyter==1.0.0 jupyter-core==5.2.0 jupyterlab==3.6.1 jupyterlab-widgets==3.0.5 jupyter-contrib-nbextensions==0.7.0 notebook==6.5.2 pythreejs==2.4.2.