Dear all, with the Fortran wrappers discussion taking off tomorrow, I wanted to explicitly ask about something that has spooked around in my head for some time, and I am unsure whether this is viable or not. It does not solve the name mangling is general, but maybe it is an easy approach in some cases, such as simple preinstrumented libraries. The new Fortran interface comes only with Fortran 2008+ compilers, because older compilers don't know all the new magic that is necessary to make it work, right? This would mean that the compiler also has the C interface capabilities of Fortran 2003. Performance tools like Scalasca or Score-P, usually call straight-forward C routines in the wrappers to generate the measurement data and maybe do some simple computations in between. Usually, they just pass the initial parameters through. As most of our wrapper code is generated anyway. Would it be a viable approach to 1) generate a C interface definition for the parts of the measurement system in question to call the measurement routines from Fortran, and 2) generate Fortran wrappers that directly call the measurement system through the generated interface and then call the Fortran version of "PMPI_Func"? Would the Fortran compiler then take care of all the name mangling issues in this case? Using Fortran wrappers calling the Fortran PMPI routines would also make handle conversion (to call the C MPI wrapper) unnecessary and could save overhead. 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