John and I have been working on a model reduction framework for parametrized PDEs (which is where the Parallel::max timing came from) where the system does _many_ reduced order solves on a large training set of parameters in order to "train" a reduced basis. The training set gets split up among the procs in an "embarrassingly parallel" manner so that each proc does a subset of the reduced order solves, and I think this step is causing a load-balancing issue somehow... (Not sure exactly what's happening yet, but shouldn't be too hard to fix).
So in short, I think it's not a general libMesh problem... Kirk, Benjamin (JSC-EG311) wrote: > Expound?? > > > > ----- Original Message ----- > From: Derek Gaston <[email protected]> > To: Roy Stogner <[email protected]> > Cc: Kirk, Benjamin (JSC-EG311); '[email protected]' > <[email protected]>; '[email protected]' > <[email protected]> > Sent: Tue Mar 16 14:55:28 2010 > Subject: Re: [Libmesh-devel] Parallel::max() > > > On Mar 16, 2010, at 12:27 PM, Roy Stogner wrote: > >> In which case it's not our Parallel::max >> implementation that's screwed up, just _Y_our load-balancing. ;-) > > Fixed that for you ;-) > > Derek > > ------------------------------------------------------------------------------ > Download Intel® Parallel Studio Eval > Try the new software tools for yourself. Speed compiling, find bugs > proactively, and fine-tune applications for parallel performance. > See why Intel Parallel Studio got high marks during beta. > http://p.sf.net/sfu/intel-sw-dev > _______________________________________________ > Libmesh-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/libmesh-devel ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Libmesh-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-devel
