I don't have any hard numbers for fortran, but I do for C structures. Using C structures with some other C functionality (pointer functions, etc etc) can yield up to a 3x slowdown at worst, and at best, had a 15% slowdown. I have seen similar results in fortran, but don't have the benchmark results for it. In either language, nothing beats raw data types for performance. Just my .02, I know some out there may not agree.
Derek -----Original Message----- From: users-boun...@open-mpi.org [mailto:users-boun...@open-mpi.org] On Behalf Of Terry Frankcombe Sent: Thursday, May 06, 2010 12:24 AM To: Open MPI Users Subject: Re: [OMPI users] Fortran derived types Hi Derek On Wed, 2010-05-05 at 13:05 -0400, Cole, Derek E wrote: > In general, even in your serial fortran code, you're already taking a > performance hit using a derived type. Do you have any numbers to back that up? Ciao Terry _______________________________________________ users mailing list us...@open-mpi.org http://www.open-mpi.org/mailman/listinfo.cgi/users
