Deserialize error using parfor with Aspen Plus

Question

2 votes

Hi,

I am trying to parallelize external black-box simulations in Aspen Plus software through a .COM object using a parfor loop. I get a weird interface+number warning and a deserialize error. The exact same code with a regular "for" loop runs smoothly. Both Matlab and Aspen are 64-bit installations on a 64-bit windows 10 PC with 16 GB RAM, but Aspen is reported as 32-bit by Task Manager, so I suspect the problem can be related?

The code goes as following:

pool = gcp(); % Create or read parallel pool
parfor i=1:1 
    Aspen(i) = actxserver('Apwn.Document.36.0');    % Create COM.Apwn object
    InitFromFile2(Aspen(i), ['C:\Users\a.penteado\Desktop\Aspen + Matlab\Parallel Test\Simulation' num2str(i) '.apw'], 1); % Open simulation file
    Aspen(i).SuppressDialogs = 1; % Suppres dialogs = true
    Aspen(i).Application.Tree.FindNode("\Data\Streams\FEED\Input\TEMP\MIXED").Value = 20*i; % Input value
    Reinit(Aspen(i).Engine); % Reinitialize simulation
    Run2(Aspen(i).Engine); % Run simulation
    Q(i) = Aspen(i).Application.Tree.FindNode("\Data\Blocks\E-01\Output\QCALC").Value; % Output variable
end

Below the error messages, which are often printed multiple times:

Warning: Interface.8E567521_F9BA_11CF_90B2_0000C0A810C4 object could not be loaded. 
> In parallel.internal.pool.deserialize (line 9)
  In distcomp.remoteparfor/getCompleteIntervals (line 159)
  In parallel_function>distributed_execution (line 820)
  In parallel_function (line 587)
  In runParallel (line 5)