[Wien] lapw0_mpi for dual cores

[Michael Gurnett]

Tried that now, and the reulst is that with -parallel there is a 20
second speed increase for a 44 min lapw0 run. So I would say the
increase is quite insignificant. Still it was worth a try.

Michael


On Fri, 2006-09-08 at 19:23 +0200, Gerhard H Fecher wrote:
> Did you try to compile simply with the auto paralelliser:  -parallel 
> 
> I did not check it up to know but would be interesting if it speeds up on dual 
> core machines without using special mpi libraries, what would be easier for 
> unexperienced users.
> 
> Ciao
> Gerhard
> 
> Am Freitag, 8. September 2006 18:29 schrieb Michael Gurnett:
> > I've been checking the system monitor and it appears that even with
> > OMP_NUM_THREADS=2 lapw0 really only using about 50% of the processing
> > power of the dual cores. Has anyone tried using lapw0_mpi for a dual
> > core, and was it easy to implement
> > 
> > 
> > Thanks 
> > 
> > Michael
> > 
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