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<P><FONT SIZE=2>Dear wrf-users:<BR>
<BR>
My organization will soon replace an Itanium-based cluster with<BR>
a Xeon-based architecture. The specs of the two clusters are given below.<BR>
Can anyone provide me guidance on what to expect performance wise with<BR>
the new system relative to the current system? For example, does WRF tend<BR>
to run faster on Xeon chips?<BR>
<BR>
Current cluster:<BR>
<BR>
1.6 Ghz "Madison" Itanium 2 chips -- 2 cores per machine<BR>
(2 sockets per machine, 1 core per socket)<BR>
12 MB cache (6 MB per core)<BR>
4 GB RAM per machine (2 GB per core)<BR>
~120 compute machines connected with 10 Gbps Infiniband network connection<BR>
<BR>
New cluster:<BR>
<BR>
2.6 Ghz "Clovertown" Xeon chips -- 8 cores per machine<BR>
(2 sockets per machine, 2 dies per socket, 2 cores per die)<BR>
16 MB cache (4 MB per die, 2 MB per core)<BR>
16 GB RAM per machine (2 GB per core)<BR>
~64 compute machines connected with 20 Gpbs InfiniBand network connection<BR>
<BR>
-Eric<BR>
<BR>
<BR>
Eric M. Kemp<BR>
Meteorologist<BR>
Northrop Grumman Information Technology<BR>
Intelligence Group (TASC)<BR>
4801 Stonecroft Boulevard<BR>
Chantilly, VA 20151<BR>
(703) 633-8300 x7078 (lab)<BR>
(703) 633-8300 x8278 (office)<BR>
(703) 449-3400 (fax)<BR>
eric.kemp@ngc.com<BR>
<BR>
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