[petsc-users] PetscLayout and GetRange

[Weston Lowrie]

Hi,

I have a problem where I want to grow the size of a Vec (or Mat) many times
during program execution.  I think for efficiency purposes I would just
want to allocate a maximum size, and then only use the portion that I need.
 In the vector case, it is rather simple, just use the beginning of the
vector, and add values to the end.

This leads to me to the problem of processor ownership ranges.  From a
previous email I noticed one could use the PetscLayout object and keep
adjusting it as the useful part of the vector grows.  Does this sound like
a good approach?

I noticed the PetscLayout is not available in Fortran bindings.  Any
workarounds for this?  I suppose I can just manually calculate the
processor ranges?

Thanks for the help,
Wes
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