ar 29, 2007, at 9:00 AM, users-requ...@open-mpi.org wrote:
Message: 1
Date: Wed, 28 Mar 2007 12:19:15 -0400
From: George Bosilca
Subject: Re: [OMPI users] Odd behavior with slots=4
To: Open MPI Users
Message-ID: <2a58cf38-0fc4-4289-85e1-315376540...@cs.utk.edu>
Content-Type: text/plain; charse
There are multiple answers possible here. One is related to the over-
subscription of your cluster, but I expect that there are at least 4
cores per node if you want to use the slots=4 option. The real
question is what is the communication pattern in this benchmark ? and
how this match the d
On 3/28/07, Warner Yuen wrote:
variation 1: hostname
real0m35.391s
variation 2: hostname slots=4
real0m45.698s
variation 3: hostname slots=2
real0m38.761s
Hi Warner,
how many nodes does your cluster have? I assume it is using only one
process per node by default. With slots=4 yo
Curious performance when using OpenMPI 1.2 to run Amber 9 on my
Xserve Xeon 5100 cluster. Each cluster node is a dual socket, dual-
core system. The cluster is also running with Myrinet 2000 with MX.
I'm just running some tests with one of Amber's benchmarks.
It seems that my hostfiles effec
