Jeff,

I certainly don't mean deleting PMPI from MPI-4. I mean putting something better in MPI-4 that, over time, can replace PMPI (so that PMPI *can* be deleted in some future version).

I don't really understand why the issues with Pcontrol has an influence on whether the PMPI should be surpassed by anything else? Isn't it for use of the profiling tool only? Scalasca does not use Pcontrol at the moment. Could anyone give me an example of a tool using it, and some context in how it is used to understand what kind of interface is needed? Cheers, Marc-Andre -- Marc-Andre Hermanns German Research School for Simulation Sciences GmbH c/o Laboratory for Parallel Programming 52062 Aachen | Germany Tel +49 241 80 99753 Fax +49 241 80 6 99753 Web www.grs-sim.de Members: Forschungszentrum J�lich GmbH | RWTH Aachen University Registered in the commercial register of the local court of D�ren (Amtsgericht D�ren) under registration number HRB 5268 Registered office: J�lich Executive board: Prof. Marek Behr, Ph.D | Prof. Dr. Sebastian M. Schmidt