Re: MPI_JOIN

Marc Snir (snir@watson.ibm.com)
Thu, 29 May 1997 19:26:03 -0400

erroneous -- a high quality implementation will return an error code and,
with the default error handler, will blow up.

undefined -- you can define it to work OK and still claim to have a
high-quality implementation.

Subtle difference of intent -- no difference in the implementation.