[petsc-dev] new P^1.5 algorithm in VecAssembleBegin?

[Jed Brown]

Mark Adams <mfadams at lbl.gov> writes:
> Yea, I realized that VecAssembly should see this load imbalance unless it
> had a barrier before its timer.  So I'm not sure what is going on.

Since you don't have any outgoing entries, I think the huge
MPI_Allreduce is expensive.  No surprise.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 818 bytes
Desc: not available
URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20150529/d3e173e1/attachment.sig>