Matalb 2021a uses 100% CPU and is running very slowly

Hello,

I haven't used Matlab in the few months on my Mac OS ver 10.14.6, and not sure what happened but Matlab R2021a runs very slowly and uses 100% CPU. I've already updated R2021a with the update patch. Made sure Editor doesn't start with the start of MATLAB. There are no viruses, as far as I know. Starting it up using Terminal does not solve the problem.

Answer 1

[Saurabh]

Hi @Sophie Astrof,

I understand your concern regarding MATLAB utilizing 100% of the GPU resources. Upon reviewing the documentation concerning system requirements, I noted that support for macOS Mojave (10.14) will be discontinued. This may potentially be contributing to the excessive memory consumption by MATLAB.

To further investigate, I recommend verifying whether your system meets the current system requirements by visiting the following link:

https://www.mathworks.com/content/dam/mathworks/mathworks-dot-com/support/sysreq/files/system-requirements-release-2021a-macintosh.pdf

Additionally, you may find the following MATLAB Answers page helpful, as it addresses a similar issue:

https://www.mathworks.com/matlabcentral/answers/484594-matlab-very-slow-using-100-cpu-and-ram-and-still-crashing#:~:text=1.%20Link.%20It%20is%20possible%20that%20the%20caches%20are%20too

I hope this was helpful