[Wrfems] RAM Requirements

Robert Rozumalski rozumal at ucar.edu
Sat Sep 26 12:35:31 MDT 2009




Hello Ben,

You're thinking about this too much. If you are concerned about the
amount of memory on the machine then buy more.

1Gb per core should be more than enough for most domains unless you
have multiple nests, in which case the bigger limitation is your
CPU speed.

Bob

> Bob (or anybody else),
>
> Do you have a formula for computing the amount of RAM required for a
> run.  What I would normally use is nx*ny*nz*4*no_of_3d_arrays, but I
> don't know how many arrays to assume.  Do you have any idea?  I'm
> guessing 4 byte reals (instead of 8 byte for double precision) is
> correct also?
>
> Ben @ WDTB
>
> --
> ***************************************
> Ben Baranowski
> Research Associate  WDTB/CIMMS
> National Weather Center Suite 2645C
> Norman, Oklahoma
> Voice: (405) 325-3027
> Email: ben.baranowski at noaa.gov
> ***************************************
>
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-- 

Robert A. Rozumalski, PhD
NWS National SOO Science and Training Resource Coordinator

COMET/UCAR PO Box 3000   Phone:  303.497.8356
Boulder, CO 80307-3000




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