Hi Toby,

 > Is there a set of test matrices I could / should use for testing the
> iterative solvers and preconditioners? Clearly, the matrices should
> satisfy the conditions required of the algorithms; I've tried to find
> matrices on MatrixMarket, but there are far fewer results than I was
> expecting, and (for instance) it seems hard to find there a real
> symmetric positive definite system matrix with an associated RHS (or
> such that you could generate a feasible RHS). I was hoping to be able to
> run my tests on various real-world data, because I know that results can
> often be input-dependent!

I suggest to use the same strategy as for the GUI, i.e. use an internal 
on-the-fly generation of symmetric, positive definite matrices. They can 
be used with all the relevant algorithms for testing purposes. The 
on-the-fly generator will be pushed (hopefully) tonight.

Best regards,
Karli


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