[Nek5000-users] Residuals for post-processing

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

Hi,

I'd like to save the residuals for the pressure iterations (PN/PN-2 as 
well as PN/PN) into a scalar variable (scalar 0, instead of temperature 
say) for each grid point in order to see where my solution diverges.
Is there a way to add something to the .usr file to do that? I couldn't 
find the variable in the code and also wouldn't know how to save 
something from the lx2=lx1-2 grid onto the lx1 grid.
Would this also be possible with the velocity residuals?

Thanks,
Markus