[petsc-users] maintaining application compatibility with 3.1 and 3.2

[Alexei Matveev]

Hi, Everyone,

I just upgraded a cluster box to Debian Wheezy that comes with PETSC 3.2
and noted quite a few changes in the interface related to the DM/DA/DMDA.
I am still somewhat confused about the distinction of the three.

My question is --- does anyone have experience maintaining a common
application source for 3.2 (e.g. Wheezy) and, say, 3.1 (e.g. Ubuntu 12.04)?

So far I was able to  do so for 2.3 (Lenny) and 3.1. However the changes
in 3.2 seem to be quite significant so that I decided to first ask for your
experience and advice.

Do you maybe have any tips or pointers on how to maintain such a
compatibility?

Alexei
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