Hi, Gus,
what I am reporting definitely is an openmpi scaling problem. The 32
waters problem I am talking about does scale to 64 cores, as clearly
shown by the numbers I posted, if I use IntelMPI (or mvapich) instead
of openmpi, on the same hardware, same code, same compiler, same Intel
mkl librar
Hi Roman, list
Sorry, now I see I totally missed your well taken point.
Your comparison of OpenMPI vs. IntelMPI scaling kills
my argument of problem size and halo overhead
being the possible cause for bad scaling.
Or at least makes my argument an inadvertent red herring.
All I can think of now i
