On 12/3/21 12:09 PM, Jed Brown wrote:
Many find MPI_Comm_split() to be a more convenient interface.
Yes, I don't think that will work for my case though, as my groups may
overlap, and some processes may not be in any group.
I think the man page is fairly clear.
| MPI_Comm_create_group is similar to MPI_Comm_create; however,
MPI_Comm_create must be called by all processes in the group of comm,
whereas MPI_Comm_create_group must be called by all processes in
group, which is a subgroup of the group of comm.
Yes, it looks like the mpitutorial.com example I followed was a bit
misleading then.
Thanks!
- Adrian
--
Dr Adrian Croucher
Senior Research Fellow
Department of Engineering Science
University of Auckland, New Zealand
email: a.crouc...@auckland.ac.nz
tel: +64 (0)9 923 4611
