[Wien] lapw0_mpi for dual cores

[Michael Gurnett]

Should point out that this was for 51 atoms so its possible there will
be a good speed-up when used on systems with an even amount of atoms

Michael

On Sat, 2006-09-09 at 09:05 +0200, Michael Gurnett wrote:
> 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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