> I suspect there are some randomness from external matsolverpackage. I use a > parallel matrix > as preconditioner, and the preconditioner is exactly LU factored, then I saw > the KSP (gmres) > residuals are different from different runs.
Besides, for sequential matrix, there is no such phenomenon, only for parallel matrix. > > Is it true of randomness from matsolverpackage? Thanks a lot!
