[petsc-users] computations on split mpi comm

[Manav Bhatia]

Hi, 

    My interest is in running two separate KSP contexts on two subsets of the global mpi communicator context. Is there an example that demonstrates this? 

    My intention is for the two subsets to have an overlap. For example, on a 4 processor global communicator (0, 1, 2, 3), one subset could be {0} and the second {0, 1, 2, 3}, or perhaps {0, 1} and {1, 2, 3}. 

    Any guidance would be appreciated. 

Thanks,
Manav