[phenixbb] Optimal Linux configuration for Phenix.refine
fairman.jim at gmail.com
Wed Jun 24 09:06:41 PDT 2015
A few years back one of the PHENIX devs referenced Amdahl's Law and how it
affects the performance of PHENIX:
Even though some parts of the refinement are done in parallel on multiple
processors, the really time-consuming calculations are done in serial,
which ends up governing the overall speed of the process.
I have found that Intel Haswell-class processors like the Core i7 4770
perform refinements significantly speedier than our brand new 12-core Xeon
server that is less than 6 months old. So it is my naive guess that
getting the fastest "single processor performance" will get you maximal
refinement speeds on PHENIX.
If you want to up the ante a bit more, you can always try overclocking
nitrogen to hit 7.2 Ghz <http://valid.canardpc.com/240rw0>.
On Wed, Jun 24, 2015 at 8:20 AM, Colin Levy <C.Levy at manchester.ac.uk> wrote:
> Apologies for the slightly off topic question.
> I am configuring a Linux workstation and would like your thoughts on an
> optimal setup for running Phenix. A lot of my computing time is spent in
> refinement and I am keen to put something together that will see a
> considerable increase in speed from my creaking Mac Pro (2 2.4GHz Quad core
> Intel Xeon with 24Gb RAM).
> Many thanks,
> Dr. Colin W. Levy
> MIB G034
> Tel. 0161 275 5090
> Mob.07786 197 554
> c.levy at manchester.ac.uk
> phenixbb mailing list
> phenixbb at phenix-online.org
> Unsubscribe: phenixbb-leave at phenix-online.org
Jim Fairman, Ph D.
Group Leader I - Crystallography
E-mail: fairman.jim at gmail.com jfairman at be4.com
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