Simulink very slow when changing configuration/block parameters

Hello all,

our university recently upgraded matlab to 2011a. However, I noticed some odd behavior in two cases:

1) after exiting the configuration parameter dialog box, it takes 4-5 seconds before I regain control over the simulink window. This happens even if the simulation is currently stopped.

2) if the simulation is running, and I want to change a block's value (say a constant value block), it takes the same amount of time before I can actually change the value, and again a few seconds after I apply the change before I can get back to the main simulink window. This does not happen if the simulation is not running.

This behaviour can be seen even with a very simple scheme with one matlab function, one scope and a constant value.

This was not the case with the previous version we were using (2006b).

I noticed this behavior under Win7 x64, and WinXp 32. However, the Linux version seems to run fine.

Is there anything that can be done to solve this issue?

Answer 1

[Fangjun Jiang]

No idea. It might be that the computer hardware is no matching for the new software anymore. I have a laptop. It runs R2007b Okay. But it takes more then a minute to start R2010b. Even exiting R2010b takes a long time. I can only wish I'll get a new computer soon.

[Enrico]

I don't think it is hardware related. The same PC does not have that problem under Linux. Only under Windows I notice this behavior, which is pretty frustrating.

Moreover, the simulation seems to run faster w.r.t. 2006b, it is just this incredible lag when opening a constant block or editing simulation parameters

Answer 2

[Vivek]

Hi, Just curious, have you guys been able to resolve this issue? I am facing similar problems and am using win7-64bit, Matlab 2011a. The bus-creator block is also so slow!

THanks,