Matlab went to sleep?

Sorry for the silly subject works. What I meant is, my matlab starts up slow (20 sec or so) before giving me command window.

And once in a while, it takes 3 sec or so to calculate something simple as 'hex2dec('abce');' Right after the result is produced, it responsive as long as I keep doing things in the command window.

But as long as I go away and come back after a couple of minutes, it was like matlab went to sleep, 3 secs or so is needed to wake up for the new job.

[Star Strider]

Are you using a laptop?

Is it plugged into the mains supply or its batteries?

[Ethan Zheng]

It's corporate workstation, I do have environment variable $LM_LICENSE_FILE setup for other tools to use, although I've read some discussion suggesting dropping this variable. Matlab path variable is quite normal.

[Star Strider]

OK. I thought that laptop power conservation options might be the problem.

If this significantly interferes with using MATLAB, contact MathWorks Tech Support.

[per isakson]

Does this sleep behaviour only affect Matlab? If so, does The Windows Task Manager (if on Windows) indicate activity during these three seconds?

Answer 1

[Sean de Wolski]

Usually this has to do with the path/current folder/license file being on a network drive.

[Ethan Zheng]

The license activation mode I used was online, so I don't know if a local license file is used or not. But it sounds silly, if Matlab has to contact remote license once in a while for this type of activation.

Thanks for your sharing.