MATLAB: Error Found an interactive session. You cannot have multiple interactive sessions open simultaneously. To terminate the existing session, use ‘delete(gc​p(‘nocreat​e’))’

Question

Hello everybody,

I want to create a pool but Matlab returns that I have a pool opened. I make sure that if a pool is open close it before open the new one. I mean:

delete(gcp('nocreate')); %delete the current pool 
poolobj = gcp;
if isempty(poolobj)
    poolsize = 1;
else
    poolsize = poolobj.NumWorkers;
end
parpool(poolsize,'IdleTimeout',Inf);

This is my code. I check if a pool is opened and then open a new one.

What is wrong? It always shows that issue.

Thanks!

Javi

Answer 1

I am going to answer my own question if this helps to someone else.

It is not possible to open a pool with gcp and the open again with parpool.

That was the problem