Rick,
if you are using an inter communicator, please refer to the man page (a
group has to use MPI_ROOT as the root argument)
Cheers,
Gilles
On 10/21/2016 3:36 PM, George Bosilca wrote:
Rick,
There are few requirements to use any communicator in a collective
operation (including MPI_R
Rick,
There are few requirements to use any communicator in a collective
operation (including MPI_Reduce), and most of them are common sense. All
ranks in the communicator must call the collective, and the different ranks
should all reach the collective together (no unmatched blocking
communicatio
