Force really tight convergence on the nonlinear solver -snes_rtol 1.e-12
Note also that initial function norm 0 SNES Function norm 2.418625311837e+01 0 SNES Function norm 3.156023513435e+04 is very different in the two cases. This means either you are solving a different nonlinear problem on 2 and 3 processes or the initial conditions are very different (or both). Barry On Sep 3, 2014, at 2:05 PM, Welland, Michael J. <[email protected]> wrote: > Thanks Barry, I attach the terminal outputs. From my reading, it seems like > everything converged alright, no? Usually I get an error message when the > linear or snes solver doesn't converge. > > By the way, I don't think it should matter but for your reference I am doing > an operator split method in FEniCS where I am alternating between solving two > system until their solution vectors stop changing between iterations. > > Thanks > > <correct_fluxes.txt><lost_fluxes.txt>
