[FLASH-USERS] HYPRE iterations

[Ryan Farber]

Hi Matthew,

Here’s how you can possibly solve the issue yourself:

1)
Look in gr_uhypreSolve and see if 500 is hardcoded (unlikely) or the name of the parameter.

2)
Grep for that parameter and see where it gets its value (hopefully via a RuntimeParameters_get call in an *init.F90 subroutine).

3)
Make sure the name of your entry in flash.par matches the string in the RuntimeParameters_get call.

==
Otherwise, it would be helpful if you can attach your log file.

Best wishes,
Ryan

Sent from my iPhone

> On Sep 12, 2024, at 10:05 AM, Matthew Trantham <mtrantha at umich.edu> wrote:
> 
> 
> Hello, 
> 
> I am getting this error in hypre:
> 
> [gr_uhypreSolve]: Nonconv./failure ierr=256, descr=[Method did not converge], component=19, converged=T, |initial RHS|^2=5.6774E+05, num_iterations=500, final_res_norm=1.893391864118381E+063
> 
> Specifically, the num_iterations is 500, I requested
> 
> gr_hypreSolverType = "HYPRE_GMRES"
> gr_hypreMaxIter = 10000000
> gr_hypreMaxIterMag = 1000000
> gr_hypreMinIter = 1000
> gr_hyprereltol = 1.e-7
> gr_hyprereltolMag = 1.e-7
> 
> Why is it stopping at the default value of 500 and not going to 1000000?
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