[petsc-dev] meaning of VecScale() if not a collective

Barry Smith bsmith at mcs.anl.gov
Thu Jul 8 17:38:30 CDT 2010

  I have added #define PetscValidLogicalCollectiveScalar(a,b), PetscValidLogicalCollectiveReal(a,b), PetscValidLogicalCollectiveInt(a,b)

  More can be added and then they could be used where ever appropriate. Meant to do this for years but never got around to it.


On Jul 8, 2010, at 3:24 PM, Jed Brown wrote:

> On Thu, 8 Jul 2010 13:12:03 -0700, Barry Smith <bsmith at mcs.anl.gov> wrote:
>>  I will use Not Collective, Logically Collective, Neighbor-wise Collective and Collective
> There are many places now where "Collective on X" appears in the
> documentation, but there are actually further constraints about
> communicators matching, etc.  I'm not familiar with sowing internals,
> but would it be feasible to automatically generate statements about
> collectiveness from the guards in the source (e.g. PetscCheckSameComm(),
> maybe a new PetscCollective(), or even PetscLogicallyCollective() that
> expanded to do a barrier in a debugging mode to help diagnose misuse)?
> Jed

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