Parallel Computing: can't access to network logical unit

I want to run a code on a cluster of several PCs using as current directory a common logical unit, that I called Q:\. The correct path to this folder is, say,

\\myserver\myfolder

so I'm starting the parallel script with

spmd
  cd('\\myserver\myfolder')
end

and, to be sure, I even put the folder in "AdditionalPaths" in the Properties of the Cluster Profile.

To check whether the functions and the files are reachable I use

spmd
  check('function1')
end

where "function1" is a function m-file in "myfolder". Unfortunately spmd can't find the function on every PC, but just on a few of them, with no apparent reason of choice. I already checked in the issued computers if the "SYSTEM" user account (used by matlabpool) has permission to \\myserver\myfolder, but it always has.

Anybody encountered a similar situation?

P.S: I'm using on every computer in the cluster R2012a on Windows 7 64bit.

[Edric Ellis]

Is it always the same machines that cannot access the network drive? I.e. try running something like

spmd
  if exist('\\myserver\folder', 'dir') ~= 7
    % this machine cannot see the directory, 
    % so print out the hostname
    system('hostname')
  end
end

to see if there's a pattern.

[Stefano Rognoni]

Thanks, but I managed to solve this by using a different server. Probably it was a permission problem.

Answer 1

[Walter Roberson]

Try http://www.mathworks.com/help/distcomp/pctrunonall.html

[Edric Ellis]

In this case, I would not expect any different results from pctRunOnAll - the spmd block ought to be completely equivalent (apart from the fact that pctRunOnAll also runs on the client).