MATLAB: Does the simulation of the large Simulink model slow down when I have the Workspace browser open

Question

I have a very large Simulink model with over 3000 parameters including Simulink Bus Objects initialized to the base workspace, from the model callback functions. When I have the workspace browser open in the MATLAB command window, the model takes a long time to update and after updation, remains at time 't=0' and the 'Running' state for upto 12 minutes.

However, when I close the workspace browser, the model runs at normal speed. I am able to reproduce this issue in R14SP3, R14SP3+ and R2006a on Windows 2000 and Windows XP.

Answer 1

There is an issue with the MATLAB Workspace browser in the way that JAVA renders all the base workspace variables when the Workspace browser is open during simulation.

As a workaround, close the MATLAB workspace browser during simulation.