Other than set userandom = PETSC_TRUE, should I do anything else? I see:
ierr = VecSetRandom(B,cheb->random);CHKERRQ(ierr); Should I use a special one or change this default to the special one? On Tue, May 17, 2016 at 3:19 PM, Matthew Knepley <knep...@gmail.com> wrote: > On Tue, May 17, 2016 at 2:11 PM, Jed Brown <j...@jedbrown.org> wrote: > >> Barry Smith <bsm...@mcs.anl.gov> writes: >> > Sounds like Jed is saying he is ok with making the default use the >> > random number generator. Do this in a branch and be aware that you >> > have to update a bunch of the test output files to match the new >> > convergence histories introduced by the change. >> >> Sure, but if it's all the same to you all, let's use a hash. This guy >> seems to have a convenient permutation of 32-bit integers. (Overkill >> for us, but that's not a problem.) >> >> http://stackoverflow.com/a/12996028/33208 >> >> Use i=(i >> 32)^i for 64-bit input. >> > > Should we just make this another Random implementation which is only for > testing? > > Matt > > -- > What most experimenters take for granted before they begin their > experiments is infinitely more interesting than any results to which their > experiments lead. > -- Norbert Wiener >
