On Jul 18, 2008, at 3:08 PM, William Gropp wrote:

Any behavior other than branch A violates the principle of least surprise.

I assume that most MPI implementations will have the values be equal just by how their f2c/c2f engines work (OMPI will). I was just wondering if it's necessary to *mandate* that behavior. Do apps really check handle equality? If so, I agree that anything other than path A violates the law of least astonishment. I assumed that not many apps do this, but I probably don't have a good basis for reference. -- Jeff Squyres Cisco Systems