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Subject: parallel computing toolbox without distributive computing toolbox
Date: Mon, 28 Sep 2009 20:05:19 +0000 (UTC)
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Hi,

Is it true that the parallel computing toolbox won't work if the distributive computing toolbox has not been installed? Because then if I type in 'matlabpool', I received the following err msg:
"  License checkout failed.
License Manager Error -4
Maximum number of users for Distrib_Computing_Toolbox reached. 
Try again later. 
To see a list of current users use the lmstat utility or contact your License Administrator.

Troubleshoot this issue by visiting: 
http://www.mathworks.com/support/lme/R2008b/4

Diagnostic Information:
Feature: Distrib_Computing_Toolbox 
License path: /myhome/.matlab/R2008b_licenses:/opt/stow/matlab-r2008b/licenses/license.dat:/opt/stow/matlab-r2008b/licenses/network.lic: 
FLEXnet Licensing error: -4,132."

So it failed to start matlabpool when Distributive Computing Toolbox is missing. And we know that if matlabpool is not working, then parfor loops will be just the same as serial for loops. I also got similar err when I tried with 'findResource' or 'pmode'. They are not working even on a local multi-core PC, not to mention a cluster system. Does this mean, without Distributive Computing Toolbox,  parallel computing toolbox is useless?