[phenixbb] Specifying the number of processors to run phenix with

Nathaniel Echols NEchols at lbl.gov
Mon Aug 31 14:22:04 PDT 2009

On Aug 31, 2009, at 1:41 PM, Pavel Afonine wrote:
> phenix.refine cannot use advantage of multiple CPUs. I think the "-- 
> nproc=4" keyword in your example below is a valid keyword for  
> phenix.autobuild, but not for phenix.refine.

Actually, it's just "nproc=4" without the "--".

You can use multiple CPUs for the FFTs in phenix.refine if you compile  
from source with OpenMP support (add "--openmp" to the arguments when  
running the install script; this requires GCC 4.2 or better, or  
Intel's compiler, and perhaps others).  I think it will automatically  
use as many CPUs as possible.  It's probably not going to help much,  

Nathaniel Echols
Lawrence Berkeley Lab
NEchols at lbl.gov

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