Can I restart surrogateopt from earlier iterations with checkpoint file?

My surrogateopt stopped because of external program crash, and I'm sure several function evaluations near the crash is not reliable. Thus, I want to restart surrogateopt from earlier iterations rather than resuming from the itertaion that the checkpoint file ends. Is it possible?

[广志 满]

I finally gave up this attempt and edited my code to save checkpoint file every iteration rather than overwrite it. The implementation is based on 'OutputFcn' in optimoptions. So next time I can restart the optimization process from any iteration.

[广志 满]

options = optimoptions('surrogateopt','CheckpointFile','surrogateopt_check.mat','OutputFcn',@saveFcn);

and define saveFcn as

function stop = saveFcn(x,optimValues,state)

load 'surrogateopt_check.mat'

filename = 'check' + string(CheckPointData.BlackboxModelOptimizerData.state.iter) +'.mat';

save(filename,'CheckPointData');

stop = false;

end

Answer 1

[Rakesh Kumar]

I don't think of any easy way to do this.