Hey Guys
i have an optimization problem using the constrainted PSO:
The syntax and general working of the constrainted PSO is the same as GA.
In my objective function, i have to generate a simOut with data from a simulink simulation. One calculation needs about 7 hours of time, since the simulation needs about 3 seconds.To increase the algorithm speed, i want the simulations to run parallel. But it doesnt seem to work if i use "parpool('local')". So far ich changed the settings to "UseVectorized" so have the whole population in one objective function. My code looks like this:
parpool('local') options = psooptimset('Display','iter','OutputFcns',@myoutputFunc,'UseParallel',true,... 'Generations',200,'PopulationSize',40,'Vectorized','on'); [xopt,fval,exitflag,output,population,scores] = pso(@objective,9,[],[],[],[],lb,ub,@constraint,options); function obj = objective(x) % WANT TO: check the number of workers , in my case 6
% WANT TO: set parallel simulations equal to work number
for p=1:length(x(:,1)) %WANT TO: set parallel working parfor loop to execute the parallel simulations
SimuGeometrics = calculateGeometrics(x(p,:)); %SimuGeometrics is a structure of lengths and angle of different body that are used for simulink
%start simulation
simOut = sim('Mechanism.slx','CaptureErrors','on','SrcWorkspace','current'); %Result
pos1 = [simOut.xx.data, simOut.yy.data, simOut.zz.data]; obj(p,1) = calculateDeviation(pos1); disp(['x: ',num2str(x(p,:)) ,' obj: ',num2str(obj(p,1))]); end end
I know that there are some functions like parfor or parsim but i dont know how to include them into my Code.
Of cause, my WANTO TO's are only ideas how i think it can work, if for example setting a parfor loop is nonsense, you can suggest another solution
Edit:
i saw your Answer from :https://de.mathworks.com/matlabcentral/answers/595402-how-to-use-the-parallel-computing-toolbox-of-matlab-to-optimize-the-parameters-of-a-simulink-model-w#answer_496378
it seems like you described a possible solution for my problem. I will try out what you described today and will share my solution if i succeed, but it would help me alot if u could share your expertise on this.
I hope somebody can help me with this problem.
Best Answer