Folks,
this is a follow up of a user report available at
http://www.open-mpi.org/community/lists/users/2016/06/29423.php
Basically, one node has a dual port ConnectX3 card, with one IB port and
one 10 GbE port.
When diagnosing some RDMA errors (not the point of this email), the user
was
This is my understanding of the MPI standard. Obviously some combination of
op and datatype are practically associative and commutative, in which case
the pattern you describe would be legal. Technically, we could add an MCA
parameter to allow the users to specify that the op should be considered a
