[petsc-users] Are there any functions (objects ) for scattering and gathering 64-bit integers just like VecScatter for PetscScalar?

Fande Kong fd.kong at siat.ac.cn
Fri Nov 2 17:57:43 CDT 2012

Yes. I haven't tested my code on MPICH. Because MPICH don't
support infiniband in the supercomputer. But I have tested code on mvapich.
It also has bugs, when the finite mesh is larger than 50M.

Now, I just want to know if you will change to use point-point. If you
would not, I will try to rewrite PetscSF for me.


On Fri, Nov 2, 2012 at 4:41 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote:

> On Nov 2, 2012 5:24 PM, "Fande Kong" <fd.kong at siat.ac.cn> wrote:
> >
> > I got it. You still didn't fix the bugs that I encountered a few months
> ago. All current MPI implementations couldn't support the function
> MPI_Accumulate or others well with one-sided communication when data is
> large.
> I have not had problems with MPICH.

Fande Kong
ShenZhen Institutes of Advanced Technology
Chinese Academy of Sciences
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