[Nek5000-users] solver tolerances and norm of residual

[nek5000-users at lists.mcs.anl.gov]

Hello Neks.  

I'm wondering about some details regarding the solvers, namely in regard to the following two tolerances:

P021  DIVERGENCE  tolerance for the pressure solver
P022  HELMHOLTZ   tolerance for the velocity solver

I assume these tolerances are for some norm on the residual of pressure/velocity.  If so, what is the specific norm?

Thanks.
--Mike