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: *[email protected] <[email protected]>*
