[Mpi-comments] One comment on MPI-3.0 Draft 2, August 2012

[Jim Dinan]

Hi Sebastien,

Something to consider in addition to probe is that fairness semantics 
are also relevant to test/wait operations that take arrays of requests. 
  It may make the most sense to attach a fairness attribute to 
communication contexts (communicators and windows) to provide more 
flexibility.  This could already be done by an MPI implementation 
through an info key on a communicator/window, however implementations 
need not support all info keys and fairness could be a requirement for 
applications that rely on it.

Cheers,
  ~Jim.

On 8/15/12 10:19 AM, Sébastien Boisvert wrote:
> Maybe there could be something like MPI_Init_fairness which could either
> be MPI_FAIRNESS_NO (the current behavior) or MPI_FAIRNESS_YES (which
> would do round-robin reception).