Re: [OMPI users] MPI_Bcast from OpenMPI

[Eugene Loh]

Right.  So, baseline performance seems reasonable, but there is an odd spike that seems difficult to explain.  This is annoying, but again:  how important is it to resolve that mystery?  You can spend a few days trying to hunt this down, only to find that it's some oddity that has no general relevence.  I don't know if that's really the case, but I'm just suggesting that it may make most sense just to let this one go. shan axida wrote: But, exactly the same program gets different result in another cluster. I mean the result doent have any spike at all. Second cluster is almost the same features with the previous one From: Eugene Loh <eugene....@sun.com> To: Open MPI Users <us...@open-mpi.org> Sent: Friday, April 24, 2009 1:26:14 AM Subject: Re: [OMPI users] MPI_Bcast from OpenMPI So, the remaining mystery is the 6x or so spike at 128 Mbyte.  Dunno.  How important is it to resolve that mystery?