It works. Thanks!
On 04/10/2017 03:14 PM, Barry Smith wrote:
SNESSetMaxLinearSolveFailures() or -snes_max_linear_solve_fail 1000 (use some
large number here).
On Apr 10, 2017, at 1:22 PM, Ping He <[email protected]> wrote:
Dear all,
I am using SNES for an incompressible flow problem. I choose the preconditioned
matrix-free Newton approach with the Eisenstat-Walker option, and the KSP
solver is GMRES.
Now I have a question on how do I setup the convergence criteria for KSP. I
notice that if the ksp iteration reaches the maxIter_ksp (I set it to 300),
SNES will treat it as divergence and quit. However, this is usually not the
case and the SNES norm can definitely drop more. So I am wondering if there is
a way to tell SNES that if KSP reaches maxIter_ksp, continue doing line search
and don't quit. I know that I can play with the maxIter_ksp and EW parameters
to mitigate this issue, but I don't want KSP to over-solve for each SNES
iteration.
Anyway, I want a setup that SNES will quit based on rTol_snes and maxIter_snes,
instead of maxIter_ksp. Any suggestions? Thanks very much in advance!
Best regards,
Jack
