On Tue, Mar 29, 2016 at 9:01 AM, Olli-Pekka Lehto <olli-pekka.le...@csc.fi> wrote: >>>>> - Simple MPI latency / bandwidth test called mpisweep that tests every >>>>> link (I'll put this up on github later as well) >>> >>> Any reference to mpisweep yet? >>> >>> Google didn't give me much... >>> >> >> That's an internal code I whipped up at some point. Pretty much the minimum >> viable program to do a sweep of all the connections. I'll try to clean it up >> a >> bit and put it up in the next few days. > > I put it now up on github. Very simple and short :) > > https://github.com/CSC-IT-Center-for-Science/mpisweep
as a programming exercise it would be handy to extend this to doing around the world ping tests. where by i mean 1 xfers to all, 2 xfers to all, 3 xfers to all i recently found a misbehaving IB card inside a multi-card switch using this approach. it was a very odd result where by only certain pairings of hosts in certain directions were failing with slow latency and bandwidth _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
