Why are the results of linear mixed-effects model different in different computers

Hi folks,

I used the MATLAB function fitlme (in statistics and machine learning toolbox) to fit a linear mixed-effects model on my data. I noticed that although the results of the fit do not vary from run to run in my computer (even when I run the script in different versions of MATLAB), there is a difference between them when I run the script in different computers (all having the same version).

Does anyone have any idea why this happens?

Thank you very much, -V