[petsc-users] Destroy ghosted vector that was used to duplicate

[Jed Brown]

John Mousel <john.mousel at gmail.com> writes:

> Looking at the message queue graph in Totalview, it seems that I'm running
> up the number of persistent communications when I try to resize a vector by
> duplicating, copying, destroying, and calling VecCreateGhost.

I don't know how you're measuring that.  PETSc does not create new
communicators per object.  We create one PETSc comm per user comm, and
all the objects share that.
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