"AsyncStream not terminated correctly" when using matlab engine in Python with slurm

Hi,

I'm using matlab in a Python Script that I'm running with Slurm.

Python is version 3.6 and Matlab 2020a but I also tried 2019a.

Even when I'm running a minimal Example

import matlab.engine

eng = matlab.engine.start_matlab()

A week ago the code worked without problems but now I'm getting the following Error:

python: export/include/msg_svc/transport/layers/stream/AsyncStream.hpp:68: foundation::msg_svc::transport::layers::stream::AsyncStream<HANDLE>::~AsyncStream() [with HANDLE = foundation::msg_svc::transport::layers::media::LocalSocket]: Zusicherung »AsyncStream not terminated correctly« nicht erfüllt.
srun: error: paris3: task 0: Aborted (core dumped)

I tried reinstalling the conda environment and the matlab engine but nothing worked.

[David]

Julian, you probably solved your issue by now but for the record, I had a MATLAB instance opened and got the same error. I closed MATLAB and then the matlab.engine.start_matlab() command worked correctly.

Answer 1

[Abhijeet]

Hi Julian,

I can understand that you have observed unexpected behaviour on using MATLAB in python script while running on Slurm. For troubleshooting you can refer the following steps: -

1. Check MATLAB and Python Versions: Ensure that you are using compatible versions of MATLAB and Python. In your case, MATLAB 2020a and Python 3.6 should be compatible, but make sure there have not been any changes or updates that might have affected the compatibility.
2. Check Slurm Environment: Make sure there were no changes in the Slurm environment, such as updates or configuration changes, that could affect the way MATLAB interacts with Python.