Thank You Eugene Loh,
It is very important for me to explain the spike at figure!
But I dont know how to hunt the reason and how to check it.
Would you please help me in more practically?
Thank you again.
________________________________
From: Eugene Loh <Eugene.Loh_at_[hidden]>
To: Open MPI Users <users_at_[hidden]>
Sent: Friday, April 24, 2009 2:16:22 PM
Subject: Re: [OMPI users] MPI_Bcast from OpenMPI
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.Loh_at_[hidden]>
To: Open MPI Users <users_at_[hidden]>
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?
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