paraview_hello_world.ipynb doesn't work on Colab

[AgnieszkaZaba]

I tried to run this notebook on Colab, on MacOs 14 and Ubuntu. I can't make it work.
First error that I get is
FileNotFoundError: [Errno 2] No such file or directory: 'pvpython'

On Ubuntu I managed to pass this error to another one
CalledProcessError: Command '['ffmpeg', '-f', 'rawvideo', '-vcodec', 'rawvideo', '-s', '1120x1488', '-pix_fmt', 'rgba', '-framerate', '10.0', '-loglevel', 'error', '-i', 'pipe:', '-vcodec', 'h264', '-pix_fmt', 'yuv420p', '-y', '/tmp/tmpodqfrsid/temp.m4v']' returned non-zero exit status 234.

It's connected to missing data_range parameter in update function (in a line plots[i].update(ncdf.variables[product][frame_num], step=step) )

After setting it to None there is a different error
`---------------------------------------------------------------------------
KeyError Traceback (most recent call last)
Cell In[22], line 1
----> 1 np.full_like(ncdf.variables['surf_precip'][:], np.nan)

KeyError: 'surf_precip'`

Please help me :)
Maybe tutorial on HOWTO actually set paraview?

[slayoo]

!pip install python3-paraview will, in principle, work on Colab and result in availability of the pvpython command.

[AgnieszkaZaba]

Should we add this to notebook? niedz., 15 gru 2024, 02:23 użytkownik Sylwester Arabas < ***@***.***> napisał:

…

!pip install python3-paraview will, in principle, work on Colab and result in availability of the pvpython command. — Reply to this email directly, view it on GitHub <#1467 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ANMOOLF4FI3JCARYLOYTKGL2FTK2JAVCNFSM6AAAAABTT6OLJGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDKNBTGQYDEMJUGU> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[slayoo]

Please help me :) Maybe tutorial on HOWTO actually set paraview?

We'd probably be better off directing users to existing tutorials on Paraview, e.g. https://docs.paraview.org/en/latest/Tutorials/SelfDirectedTutorial/

[AgnieszkaZaba]

!pip install python3-paraview getting me an error:

ERROR: Could not find a version that satisfies the requirement python3-paraview (from versions: none)
ERROR: No matching distribution found for python3-paraview

[slayoo]

sorry! apt-get install python3-paraview

[slayoo]

[AgnieszkaZaba]

It's running but I can't get results. It's running pvpython for 2 hours now and Colab is disconnecting me. I don't know how else I can run it.

[AgnieszkaZaba]

uff, I got results!!
Finally I have path to Paraview permanently set in PATH and it is working! 🎉

On MacOs 14 I had to add PATH to ~/.zshrc file.

[AgnieszkaZaba]

I added

if 'google.colab' in sys.modules:
    !sudo apt-get -qq install python3-paraview
    !sudo ln -s /usr/lib/libpdal_base.so.15 /usr/lib/libpdal_base.so.13 # workaround for Ubuntu package bug

It works fine. But maybe we can also think why it is taking significantly longer on Colab.

[slayoo]

It works fine. But maybe we can also think why it is taking significantly longer on Colab.

No idea...

BTW, there is also a tool called ipyparaview: https://github.com/NVIDIA/ipyparaview (" iPython widget for server-side ParaView rendering in Jupyter. ")

[slayoo]

addressed in #1481

[AgnieszkaZaba]

I don't thing it is working. It did not render any results. Line subprocess.run() is running without error and without output.
If I try to run ! pvpython pvscript.py I got the following

Traceback (most recent call last):
  File "/content/pvscript.py", line 2, in <module>
    from paraview import simple as pvs
ModuleNotFoundError: No module named 'paraview'

Loguru caught a signal: SIGSEGV
malloc_consolidate(): unaligned fastbin chunk detected

Loguru caught a signal: SIGABRT

Loguru caught a signal: SIGINT

I changed python version from 3.10 to 3.9 and it did not helped.

Some propositions

• extra installation on Colab?
• using ipyparaview instead of python3-paraview?
• adding env path? (but it is in same place pvpython, pvbatch, paraview and it is in /usr/bin which is in PATHS)