In file /home/blah/darwin2k/src/ddcore/misc/ddglobals.h:

extern int svdTryOrder

Order in which to try different SVD algorithms.

Documentation

Order in which to try different SVD algorithms. Sigh. This shouldn't be necessary, but I have yet to find (or write, but I don't want to go there) truly stable SVD code in C or C++ that doesn't require a heap of extra code to support it. dyno currently uses two separate SVD algorithms, as each one seems to have its own failure conditions. svdTryOrder determines which algorithm is used as the default; the other is used only when the default method fails to converge. If you're getting incorrect behaviour out of SVD or are seeing error/warning messages about SVD failing, you can try setting this variable to 1 (default is 0). Good luck--you may need it.

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