Segmentation fault in linux with heavy*.rst #2567
Description
Before submitting the issue
- I have checked for Compatibility issues
- I have searched among the existing issues
- I am using a Python virtual environment
Description of the bug
Hello,
I am trying to post-process results from a mechanical transient calculation done with M.APDL 2021R2.
This analysis produce a file.rst of 62Gb.
My program can't acess the data in that rst. The segmentation fault appears after I try to access data in the core.Model().
Is there something I can try to fix my problem ?
Verifications already done :
- The file is not corrupted by post-processing some results directly with M.APDL. ;
- The same code works with a smaller *.rst ;
- Launching on several nodes of a calculation server (Intel(R) Xeon(R) Gold 6234 CPU @ 3.30GHz + 300 Go RAM and Intel(R) Xeon(R) Platinum 8260 CPU @ 2.40GHz + 6000 Go RAM).
Steps To Reproduce
Code :
from ansys.dpf import core as dpfcore
model=dpfcore.Model("file.rst")
print(model)
Error :
Segmentation fault (core dumped)
Which Operating System causes the issue?
Linux
Which DPF/Ansys version are you using?
Ansys 2021 R2
Which Python version causes the issue?
3.13
Installed packages
Package Version
ansys-api-mapdl 0.5.2
ansys-api-platform-instancemanagement 1.1.3
ansys-dpf-core 0.14.1
ansys-dpf-post 0.10.1
ansys-mapdl-core 0.71.0
ansys-mapdl-reader 0.55.1
ansys-math-core 0.2.4
ansys-platform-instancemanagement 1.1.2
ansys-tools-path 0.7.3
appdirs 1.4.4
certifi 2025.8.3
charset-normalizer 3.4.3
click 8.2.1
contourpy 1.3.3
cycler 0.12.1
fonttools 4.59.2
geomdl 5.4.0
grpcio 1.74.0
idna 3.10
importlib_metadata 8.7.0
kiwisolver 1.4.9
matplotlib 3.10.5
numpy 2.3.2
packaging 25.0
pandas 2.3.2
pexpect 4.9.0
pillow 11.3.0
pip 25.1.1
platformdirs 4.4.0
pooch 1.8.2
protobuf 4.25.8
psutil 7.0.0
ptyprocess 0.7.0
pyansys-tools-versioning 0.6.0
pyiges 0.3.2
pyparsing 3.2.3
python-dateutil 2.9.0.post0
pytz 2025.2
pyvista 0.45.3
requests 2.32.5
scipy 1.16.1
scooby 0.10.1
setuptools 80.9.0
six 1.17.0
tabulate 0.9.0
tqdm 4.67.1
typing_extensions 4.15.0
tzdata 2025.2
urllib3 2.5.0
vtk 9.4.2
zipp 3.23.0