[petsc-users] odd SNES behavior

[Barry Smith]

On Mar 6, 2013, at 3:44 PM, "Mark F. Adams" <mark.adams at columbia.edu> wrote:

>> 
>> Yikes, the logic of SNES and MG (with dm etc) is getting a bit too convoluted. I would run in the debugger with a break point for MatCreate_MFFD() this will give a hint why it is being used.
>> 
> 
> #0  0x0000000100fca059 in MatCreate_MFFD ()
> #1  0x0000000100eedc34 in MatSetType ()
> #2  0x0000000100fc7bc3 in MatCreateMFFD ()
> #3  0x00000001012acc90 in MatCreateSNESMF ()
> #4  0x00000001012c092e in SNESSetUp ()
> #5  0x00000001012c277b in SNESSolve ()
> 
> I will keep digging.  This is the first one and it is not in the PC …
 
  It looks like SNES is not getting set it's "master" Jacobian.  If you run the same code with hypre does it also hit this create?

   Barry