Hi Pavan, sorry, didn't directly answer your last question:

...

Am I missing something here? Are all tools now required to have an #if MPI_VERSION >= 3 check? Does this mean that all existing tools are now broken for MPI-3 implementations?

I guess it only affects tools that do use pre-generated wrappers. Tools that parse mpi.h and generate wrappers from what they find there might still work. 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