[Wrf-users] Computer architeture and WRF

[Kemp, Eric M.]

Dear wrf-users:

My organization will soon replace an Itanium-based cluster with
a Xeon-based architecture.  The specs of the two clusters are given below.
Can anyone provide me guidance on what to expect performance wise with
the new system relative to the current system?  For example, does WRF tend
to run faster on Xeon chips?

Current cluster:

1.6 Ghz "Madison" Itanium 2 chips -- 2 cores per machine
(2 sockets per machine, 1 core per socket)
12 MB cache (6 MB per core)
4 GB RAM per machine (2 GB per core)
~120 compute machines connected with 10 Gbps Infiniband network connection

New cluster:

2.6 Ghz "Clovertown" Xeon chips -- 8 cores per machine
(2 sockets per machine, 2 dies per socket, 2 cores per die)
16 MB cache (4 MB per die, 2 MB per core)
16 GB RAM per machine (2 GB per core)
~64 compute machines connected with 20 Gpbs InfiniBand network connection

-Eric


Eric M. Kemp
Meteorologist
Northrop Grumman Information Technology
Intelligence Group (TASC)
4801 Stonecroft Boulevard
Chantilly, VA 20151
(703) 633-8300 x7078 (lab)
(703) 633-8300 x8278 (office)
(703) 449-3400       (fax)
eric.kemp at ngc.com

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