Tutorial Example Failure: NB6.Cases.Studies.Nanocomposite

[martintb]

The first example in the tutorial/NB6.Cases.Studies.Nanocomposite notebook fails on some users machines with the following error:

ValueError: Jacobian inversion yielded zero vector. This indicates a bug in the Jacobian approximation.

This error has been reported by several users but does not seem to occur for everyone. Whether or not the error occurs does not seem to be correlated with OS or pyPRISM install method. Unfortunately, because I don't currently have access to a machine where this error occurs, it's impossible to debug.

While it would be feasible to replace this example, I think it's more important to discover why this occurs. I suspect the error may be related to BLAS/LAPACK libraries, but I don't have any way to test this suspicion.

[w-dodd]

Hey Tyler - I can confirm this bug is still happening. I know that's not much use, but I will say that I'll do my best to look into it with the time I have! I'm having this bug on PRISM code I've written myself, however it does deal with polymer-grafted particles so that sounds like a common theme w/ NB6.