Getting error - Unable to launch MVM server: License Error: Licensing shutdown

I am trying to setup matlab within docker image which will be used in AWS components. I am invoking matlab.engine.start_engine in my code which is throwing the error: Unable to launch MVM server: License Error: Licensing shutdown. I have setup the MLM_LICENSE_FILE in my DockerFile as an environment variable as well. Can anybody guide what could be the reason or resolution here?

[Dhruv]

Could you please confirm if you are experiencing any issues when running standard MATLAB commands, such as the example:

x = zeros(5)

[Walter Roberson]

It sounds like either there is no lmgrd license server running at all, or else that the vendor license daemon MLM is absent or else is crashing.

[Shlomi]

Were you able to solve this issue?

I am using R2023b. Matlab is launching alright when running from the docker's shell, but fails when starting it from Python's MatlabEngine using start_engine() command.

I use mathworks/matlab:r2023b and MLM_LICENSE_FILE is exported into the docker.

Python's exception shows this relevant callstack:

self.matlab_engine: MatlabEngine = matlab.engine.start_matlab(option)

File "/usr/local/lib/python3.10/dist-packages/matlab/engine/__init__.py", line 128, in start_matlab

eng = future.result()

File "/usr/local/lib/python3.10/dist-packages/matlab/engine/futureresult.py", line 67, in result

return self.__future.result(timeout)

File "/usr/local/lib/python3.10/dist-packages/matlab/engine/matlabfuture.py", line 87, in result

handle = pythonengine.getMATLAB(self._future)

matlab.engine.EngineError: Unable to launch MVM server: License Error: Licensing shutdown

Answer 1

[Pratyush Swain]

Hey Shweta,

I understand you are facing shutdown due to license error. Since the error number has not been mentioned,I will suggest to check out the following page for license errors and focus on those errors involving 'MLM': license problems "cheat sheet" - MATLAB Answers - MATLAB Central (mathworks.com)

Hope this helps.