Regularize by Super Parameters (SVD-Assist)

SVD-Assist is a useful methodology to speed up the calibration of highly par­ametrized models (often involving the pilot point method).

Either of the following two ways can be used to determine the number of sin­gular values:

• FePEST uses the SUPCALC tool to determine the optimal number of super parameters. This is the default option.

• The number of super parameters can be manually specified. This is par­ticularly useful if multiple CPUs are used in parallel.

Since each iteration requires one model run per super parameter to calculate the Jacobian matrix, optimal speed up is attained if the number of super parameters is set to a multiple of total number of slaves used for parallel com­putations.