Suggestion on optimal hardware for WRF-ARW run

[fcarotenuto]

Dear all,

I would like to run WRF-ARW simulation at urban scale and 1 km resolution in the inner domain (total of 3 nested domains with 15, 5, 1 km resolution). Yearly simulation might be necessary.

What's a decent -virtualized- hardware to run these kind of simulation? A total of 32 cores, 128 GB RAM and 2 TB hard drive would be ok?

Thanks!

Federico

 

[islas]

Please see this thread on a recommended starting point for total number of cores to use:

Choosing an Appropriate Number of Processors

To choose an appropriate number of processors, you will need to consider the decomposition of the processes in relation to the size of the domains. For processing, your domain will be divided up into tiles, and the number of tiles depends on the total number of processors you use - 1 tile per...

forum.mmm.ucar.edu

RAM requirements will then come down to memory usage per patch * number of processors used. This will be impacted by your model configurations and options used. Fortunately this can be roughly approximated by using the information from the rsl.out.* log files, such as:
alloc_space_field: domain 1 , 36145560 bytes allocated

Hard disk space will be limited by how large you expect your file output to be, setting aside any input data. Thus it will be based on your overall domain size, how frequently you want history written, what variables you want to log, and if you plan on moving that data away periodically.