> On Oct 4, 2018, at 6:09 PM, HeeHo Park wrote:
>
> Barry and Jed,
>
> Thank you for your answers. I think I need to learn more about domain
> decomposition as I am a bit confused.
> Is it true that we are using BiCGstab here to solve the system of equations,
> using Additive Schwartz as
Barry and Jed,
Thank you for your answers. I think I need to learn more about domain
decomposition as I am a bit confused.
Is it true that we are using BiCGstab here to solve the system of
equations, using Additive Schwartz as a domain decomposition
preconditioner, and that precondition matrix
Since
KSP Object: (flow_sub_) 1 MPI processes
type: preonly
this means only a single iteration of the inner solver is used so the numbers
in red are not used.
You could do something like -flow_ksp_type fgmres -flow_sub_ksp_type gmres
-flow_sub_ksp_rtol 1.e-2 but it wouldn't
The subdomain KSP (flow_sub_) has type "preonly" so it always does
exactly one iteration. If you were to use an iterative subdomain solver
(e.g., -flow_sub_ksp_type gmres) then those tolerances would be used.
HeeHo Park writes:
> Hi, I'm running PFLOTRAN and in PFLOTRAN, we have flow_ and
