[petsc-users] How can I do reduction operation for Petsc vectors in splitted communicators?

[Fangbo Wang]

Hi,

Assume I did MPI_Comm_split, the global communicator is splitted into
several disjoint communicators.

I created a parallel Petsc vector with same size in all the small
communicators.
How can I do a reduction operation for this Petsc vector among all the
small communicators?

Thank you very much!

Best regards,

Fangbo Wang


-- 
Fangbo Wang, PhD student
Stochastic Geomechanics Research Group
Department of Civil, Structural and Environmental Engineering
University at Buffalo
Email: *fangbowa at buffalo.edu <fangbowa at buffalo.edu>*
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