Parallel Computing and Network connection

2011 3 10
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Hi,
Is there a need to be connected to the internet while matlabpool is running on a single multicore machine?
I can run a code in parallel only when I am connected to the internet; otherwise, matlabpool hangs and does not initialise.
I have tested this both on Windows 7 Ultimate 64-bit (quad core machine) and also Mac OSX (dual core machine). On both of this machines, matlabpool only works if I am connected to the internet [or MATLAB and MPIexec are allowed to access the internet]. While this is OK if I have internet access, but it is not always the case.
Cheers

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Edric Ellis
Edric Ellis 2011-3-10
Which version of MATLAB / Parallel Computing Toolbox are you using? Are you using the "local" scheduler? (You shouldn't need internet access for this).
Edric Ellis
Edric Ellis 2011-3-10
I just tried pulling the network cable out of my Windows 7 machine and using R2010b was able to run "matlabpool local 4"...
Moes
Moes 2011-3-11
I am using version R2009b. The setting for Parallel is the default "local" setting. I have not changed anything.
I don't know why but it only works if it's allowed to connect to the net.

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Walter Roberson
Walter Roberson 2011-3-10

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Where is your license server, local or networked? How is your scheduler configured?

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Moes
Moes 2011-3-10
I have no idea. I have not changed the settings that came with the default installation. MATLAB is installed on single machines and is not a network installation.
I guess I have to set it up?

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Moes
Moes
2011-3-10

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