Hello,
I would like to permute an index set with another index set, just like
you can do for vectors using VecScatter.
I have two index sets IS1 and IS2 which share the same size but have
different parallel layouts. I often need to permute vectors/matrices
using those two index sets (as in first permute with IS1 then permute
the result with IS2). Since I don't use the intermediate result, I would
like to permute IS1 with IS2 to get a new index set so that I can
permute directly my vectors/matrices with it. Is that possible using Petsc?
I'm not sure I am clear so feel free to ask for clarifications if need be.
Best regards,
--
Rémi Lacroix
Équipe ALPINES
Inria Paris-Rocquencourt / Laboratoire Jacques Louis Lions, UPMC
