Error running parallel simulations

I am trying to parallelly run a simulink model(contains embedded matlab functions) several times on my intel i5 based PC. After much debugging, I am stuck at below error.

Starting matlabpool using the 'local' profile ... connected to 2 labs.
<path>\MultiAUV_sfun.mexw64 could not be deleted. Trying to delete again.

Two attempts to delete <path>\MultiAUV_sfun.mexw64 have failed.
This file is either not writable or is locked by another process.

Error using parallel_function (line 589)

Error using targetman>throw_make_error (line 588)
(SLSF Diagnostic)

Error stack:
(No remote error stack)

Error in par_Multi_Simulate_2 (line 52)
parfor index = 1:3737

>> _

Answer 1

[Sarah Wait Zaranek]

It looks like your mex file is still being used in MATLAB memory. You can try to see if clearing mex files will help,

clear mex

Answer 2

[Guy Rouleau]

It might be because both workers are trying to build/access/delete the mex-file a the same time.

Look at the documentation page titled "Run Parallel Simulations":

http://www.mathworks.com/help/simulink/ug/running-parallel-simulations.html

At the bottom, you will find a section titled "A Model with Stateflow, MATLAB Function Block, or Model Block"

There you will find an example code showing you how to create a temporary directory for each worker to handle its own mex-file.