[Wrf-users] WRF Benchmarking

[jcrosby]

Good afternoon,

I was wondering if anyone has done Benchmarking on WRF in a Single 
system setup.  We are looking at purchasing new hardware in the near 
future and was wondering if WRF scales at roughly the same rate.  As of 
now we don't have any brand or speed in mind, so my testing and math is 
based on theory and what has been observed with our 2 current systems.

Right now We have WRF installed on 2 systems. 
System 1:  is a Dual core 2.2 Intel Duo.
System 2:  has 2 Intel Xeon 2.8 dual core CPUs.

Currently we are testing speeds in a WRF grid that is as follows:
Grid Point horizontal resolution = 4 km
grid point east-west (X direction) = 229
grid points north-south(Y direction) = 229
Vertical Levels = 40
Time step = 24 seconds

We did a few runs and noticed that on System 1 it took that grid roughly 
10 hours to complete while on System 2 it took roughly 6 hours. 

Now we need to test it on a Quad core Machine and again on a Dual-Quad 
core machine, however we do not have the Quad core machines available.  
However, working with those figures I figure that a Quad core machine 
will take roughly the same amount of time as System 2 does, based on 
Core speeds and Communication speeds. Now, along those lines a Dual-Quad 
core machine should cut the time down even further, I figure that grid 
would drop from the current 6 hours to around 3 hours.

Would my assumptions on timing be roughly correct? 

-- 
Joseph Crosby
Network Administrator
Scotia Weather Service Inc.
netadmin at scotiaweather.com
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