Error using parfoor: interactive sessions

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Hello guys,
please is it a good practice to have two parfor loops execute in the same function? For example, I have:
parfor slice_num = 1:number_of_labs
.
.
.
end
.
.
.
parfor slice_num = 1:number_of_labs
.
.
.
end
Now, my problem is that it generates an error stating: "Found an interactive session. You cannot have multiple interactive sessions open simultaneously. To terminate the existing session, use 'delete(gcp)'"
Please, you guys, what should I do to resolve this error?
Thank you for your assistant.
  5 Comments
Mohammad Aref
Mohammad Aref on 3 Sep 2017
As Edric stated, I encountered the same error by calling parpool for the second time.
Petru-Daniel Morosan
Petru-Daniel Morosan on 9 Jan 2018
I had this error message when multiple defintion of parpool occurs, which is not allowed in Matlab.

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