On Aug 22, 2014, at 1:43 PM, Brian Van Straalen <[email protected]> wrote:

Is there a significant cost to have the MPI implementation provide a check for aliasing?

We do check for this error by default in MPICH (which is why this email thread started). There’s a way to turn off the checking through a configure flag as well as an environment variable, if needed. But that’s essentially saying — I know it’s wrong, but I’m too lazy to fix my application. — Pavan -- Pavan Balaji ✉️ http://www.mcs.anl.gov/~balaji