[petsc-users] Questions about PCMG

[Barry Smith]

  -pc_mg_log doesn't have anything to do with DA or DMMG it is part of the basic PCMG. Are you sure you are calling SNESSetFromOptions()?

   Barry

On Apr 3, 2012, at 6:56 PM, Yuqi Wu wrote:

> Hi, Mark,
> 
> Thank you so much for your suggestion.
> 
> The problem 1 is resolved by avoiding calling PCMGSetNumberSmoothUp. 
> 
> But since I am using the unstructured grid in my application, I didn't use DA or dmmg, so -pc_mg_log didn't give any level information. I try to run my code using -info with 1 processor, and I find out some interesting issues.