[Wien] lapw0_mpi for dual cores

[Michael Gurnett]

Sorry

I only have one pc in the hosts file

On Sat, 2006-09-09 at 11:53 +0200, Michael Gurnett wrote:
> I've tried to compile using mpi (intels version) now. Seems to compile
> fine, but I'm not able to run it. in my machines file I added lapw0:pc:2
> 
> in the mpd.hosts file I added 
> pc
> pc
> 
> If anyone has any experience with this it would be great
> 
> 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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