calling PETSc from Fortan main routine

[Satish Balay]

On Mon, 13 Aug 2007, Waad Subber wrote:

> Hello Everyone,
> 
> I am a new PETSc user; and I am wondering if any one can help me with the following issue.
> 
> The issue is I want to write KSP solver with all the required objects in an external subroutine and then call it from my main program. I don't know if I can do that. 
> 
> What I mean is I have a main code consist of several subroutines and I want to change my solver with PETSc solver with keeping the same structure of my main program. 
> 
> Thanks :)

It should work.

The only thing you have to make sure is -
PetscInitialize()/PetscFinalize() routines are called only once.

Satish