st called and
>become normal afterwards
> To: Open MPI Users
> Message-ID: <4afc3550.10...@ldeo.columbia.edu>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Eugene Loh wrote:
> > RightCFD wrote:
> >>
> >> Date: Thu, 29 Oct
>
> Date: Thu, 29 Oct 2009 15:45:06 -0400
> From: Brock Palen
> Subject: Re: [OMPI users] mpi functions are slow when first called and
>become normal afterwards
> To: Open MPI Users
> Message-ID: <890cc430-68b0-4307-8260-24a6fadae...@umich.edu>
> Content-Type: text/plain; charset=US-ASCII
We installed a linux cluster recently. The OS is Ubuntu 8.04. The
network is infiniband. We run a simple MPI program to compute the
value of pi. The program follows three stages: MPI_Bcast, computation
and MPI_Reduce. We measure the elapsed time on computation and
communication, respectivel
