Hello all, does anyone know if the floating point event counts reported by PAPI are summed over all threads inside of a MPI rank? Or is it only the count on thread 0?
I would hope for the former but suspect the latter. That is, if I was to run the same job with using ncores cores and would run once with nranks MPI ranks and nthreads threads per rank and onece with ncores MPI ranks and 1 thread per rank, would the sum over all *reported* event counts of all ranks (roughly, neglecting ghost zones etc) agree? Yours, Roland -- My email is as private as my paper mail. I therefore support encrypting and signing email messages. Get my PGP key from http://keys.gnupg.net.
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