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From: David Singleton (dbs900_at_[hidden])
Date: 2003-07-17 18:03:06


On Thu, Jul 17, 2003 at 03:26:48PM -0500, Matthew Bettencourt wrote:
>
> Performance issue.
> On these SP systems I am noticing a latency of a MPI_Send/Recv of about
> 1.2 to 1.5ms. Is this typical. With the native MPI I am getting
> someing like .3ms or a factor of 4 better. I am trying using the IBM's
> Colony switch for communication (binding to that IP vs the ethernet IP
> on lamboot)
>

Are these milliseconds or microseconds? (They're often "ms" and "us"
respectively.)

David

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