Error: Unable to classify a variable in the body of the parfor-loop
2 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Hi
I get the following error when I run the following parallel loop :
1 out(1:numFutureSamples,1:numPaths,1:kh)=0;
2 parfor i=1:kh
3 estModel(i)=estimate(model(i),DATA);
4 res(:,i)=infer(estModel(i),DATA);
5 initial_vector(:,:,i)=repmat(DATA,1,numPaths);
6 for futureSamples=1:numFutureSamples
7 out(futureSamples,:,i)=simulate(estModel(i),1,'Y0',initial_vector(:,:,i),'NumPaths',numPaths,'E0',res(:,i));
8 initial_vector(:,:,i)=[repmat(DATA(futureSamples+1:end,1),1,numPaths);out(1:futureSamples,:,i)];
9 end
10 end
Error: Unable to classify the variable 'out' in the body of the parfor-loop.
This error only occurs for line 8 .
Can anyone help me fix the error?
0 Kommentare
Antworten (1)
Edric Ellis
am 27 Mai 2022
Bearbeitet: Edric Ellis
am 27 Mai 2022
The problem here is that you've got two different accesses to the variable out. On line 7, you have the valid sliced indexing expression
out(futureSamples,:,i) = ...
The problem is the way that you're reading from out on the following line:
.. out(1:futureSamples,:,i) ...
One of the constraints of parfor is that sliced variables must use the same combination of subscripts everywhere. It's a bit annoying to work around in this case, but something like this should work:
parfor i = 1:kh
% stuff...
% create a temporary matrix that will fill out(:,:,i)
tempOut = zeros(numFutureSamples, numPaths);
for futureSamples=1:numFutureSamples
tempOut(futureSamples,:) = simulate(..);
intial_vector(:,:,i) = [..; tempOut(1:futureSamples,:)];
end
out(:,:,i) = tempOut;
end
Siehe auch
Kategorien
Mehr zu Parallel for-Loops (parfor) finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!