Thank you for the reply @damarginal.

I have a case where I have a total of 17 independent manufacturing input parameters to an engineered system, plus 2 parameters that account for large, important trends in operating history. This gives me a total of M = 19.

Each of these parameters are to the best of my knowledge, independent of one another.

I was originally running the SOBOL analysis with N = 10000, so no wonder it was taking SO long… It actually required 210000 “realizations.”

So after reading your feedback, I’ve run the SOBOL analysis again, with N = 200, and N = 500 but I end up getting an error which looks as follows:

something went extremely wrong while trying to evaluate the analysis

You may find additional information in the catched exeption:

Improper assignment with rectangular empty

matrix.

Error in uq_sobol_indices (line 163)

TotalSobolIndices(oo, : ) = tsindex;

Error in uq_sensitivity (line 83)

results =

uq_sobol_indices(CurrentAnalysis);

Error in uq_initialize_uq_sensitivity (line 861)

uq_runAnalysis(current_analysis);

Error in AUTO_EAE_UQ_Improved_SLURM_v3 (line 346)

SobolAnalysis = uq_createAnalysis(SobolOpts);

Before I carry on and try a much larger size of N, could you please let me know what you think regarding whether the above error occurred simply because of the low number of N I’ve tried re-running the problem with (such that the problem didn’t converge)? Or do you think there is a different fundamental issue?

Thank you!