asammdf
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danielhrisca
The GUI crashes on ubuntu 20.04
Python version
I have tried this with the Ubuntu 20.04 system python: version 3.8.10 I have also tried with the latest patch version of each of 3.8, 3.9 and 3.10 built from source: 3.8.12, 3.9.9, 3.10.0
Code
MDF version
7.0.7
Code snippet
N/A
Traceback
N/A
Description
When I run the GUI and load a mf4 file, it works fine. When I try to create a plot, it crashes with this error:
munmap_chunk(): invalid pointer
Aborted (core dumped)
Looks like an issue in the c extension to me. Any idea why this might be crashing on Ubuntu 20.04? Is the GUI tested on Ubuntu systems? I don't have a more recent Ubuntu machine to test this on (I tried to get it working in a docker container but bumped into some issues).
Hi Daniel. Thanks for the super quick response! The development branch doesn't seem to have this issue. Great :)
It does seem to have strange behaviour when dragging or zooming the plot. The data disappears while it is being moved and/or zoomed. You might already know about this but I thought I might as well upload a gif to show you:
I'll have a look. There have been many changes related to handling huge channel count (for example 2000 active curves) so maybe panning was affected
@BenWhetton I've made some improvements and now the plots look fluid again. Let me know how it works on your PC
Nice! It does seem to have fixed that issue. It does seems to regularly crash when I zoom in and out for 10-20 seconds though ("Segmentation fault (core dumped)" or "munmap_chunk(): invalid pointer"). I see you're actively working on it though so I assume you'll find this issue while debugging.
@danielhrisca there doesn't seem to be a 7.1.0 tag so I've tested the latest development branch commit. Creating a plot works fine but it still crashes with a segmentation fault if I zoom in and out. Try zooming in and out with the right mouse button held for 10-20 seconds and you will hopefully reproduce the crash. For me this crashes with the data file I sent you for #704
what about the exe from here https://github.com/danielhrisca/asammdf/releases/tag/7.1.0 ?
Does this crash not occur on your system?
The tag is on the repo now. I pip installed 7.1.0 and get the same crash.
If I try the exe, it fails to launch and I get a glibc related error: [45162] Error loading Python lib '/tmp/_MEININUJK/libpython3.10.so.1.0': dlopen: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.35' not found (required by /tmp/_MEININUJK/libpython3.10.so.1.0) My system has 2.31 and I can't upgrade it.
I forced pip to build the extension by passing the --no-binary flag and I still get the same crash. Here's the cutils build part of the logs in case it's useful: cutils-build.log
I'm not super familiar with C extensions so I'm not sure what the problem could be. Happy to help debug.
I've run version 7.1.0 on Ubuntu 20.04.3 and I see no crash when zooming around. Did you do a clean install ? pip install -I asammdf[gui]
Yep, I've done a clean install. Have you tried the exe? I am running Ubuntu 20.04.4.
I've run version 7.1.0 on Ubuntu 20.04.3 and I see no crash when zooming around. That's strange. Have you tried the exe? I am running Ubuntu 20.04.4.
Did you do a clean install ?
pip install -I asammdf[gui]Yep, I've done a clean install into a dedicated virtualenv (using pipx and raw virtualenv)
I've tried now on a native install of Manjaro and it works correctly. You have to make sure that the C extension is compiled and that you have it in the asammdf/blocks folder
# inside the asammdf folder
python setup.py build
# then copy the `cutils.so` file from `asammdf\build\lib...` to `asammdf\blocks`