On Sun, Feb 14, 2010 at 10:45:09PM +0000, Garth N. Wells wrote: > > > Anders Logg wrote: > > On Fri, Feb 12, 2010 at 10:27:07AM +0000, Garth N. Wells wrote: > >> > >> Anders Logg wrote: > >>> On Fri, Feb 12, 2010 at 12:18:19AM +0100, Anders Logg wrote: > >>>> Here's an update on the status for getting packages ready for > >>>> inclusion in the next Ubuntu LTS release. > >>>> > >>>> 1. Johannes needs all releases to be ready by Monday. That will give > >>>> him a couple of days to prepare the packages. > >>>> > >>>> Which releases do we want to make? There have been JIT compiler fixes > >>>> in FFC and UFL that would be good to get in, and also updates in > >>>> DOLFIN. > >>> As far as I can see, we are ready to make the following releases: > >>> > >>> UFL 0.5.2 > >>> FErari 0.2.0 > >>> FFC 0.9.1 > >>> > >>> I can just push the button on these if no one has anything to add. > >>> > >>> The following remains: > >>> > >>> Instant 0.9.8: Why is the buildbot failing? > >>> DOLFIN 0.9.7: SCOTCH problems > >>> > >> DOLFIN should be straightened out today. There are no problems per se, > >> just the efficiency needs to be improved. I've done this for one > >> function, and just now need to do it for another. > > > > Everything except DOLFIN should be ready for release now. It's > > currently failing on the buildbot with > > > > In file included from dolfin/fem/DofMap.cpp:24: > > dolfin/fem/DofMapBuilder.h:13:35: error: boost/unordered_set.hpp: No > > such file or directory > > In file included from dolfin/fem/DofMap.cpp:24: > > > > Where is Boost installed on the buildbot?
Don't know but I assume it's the regular Debian/Ubuntu packages. Johannes knows. > >> I've found some erratic behaviour with SCOTCH and ParMETIS with larger > >> numbers of partitions. Sometimes partitioning works, sometimes it hangs. > >> Can anyone run the elasticity cpp demo with 5 processes? > > > > I haven't installed SCOTCH yet, so it fails for me. Is SCOTCH now > > default? Does it work with the regular SCOTCH in Debian? > > Yes, but that it's easily changed (just a parameter). > > > How does it > > compare to ParMETIS? (Speed, memory usage.) I remember the first time > > we tried SCOTCH that it was very intensive on memory usage. > > > > That was in serial, right? Yes. > From having run demos, speed seems comparable to ParMETIS. I haven't > checked memory use. What I hope that SCOTCH can partition meshes on > which ParMETIS fails since there is much greater scope for tuning > SCOTCH. Also, for the demos that I ran, SCOTCH produced better partitions. > > The parts of the code which I added to build the mesh dual graph can > probably be reused to compute element neighbours across process > boundaries which we need for interior facet integrals. ok, sounds good. > > When I change to ParMETIS, assembling works (but is slow) and then > > UMFPACK reports a singular matrix. > > > > We need more people running in parallel to track performance! Yes, definitely. And don't forget the blueprint on benchmarking: https://blueprints.launchpad.net/dolfin/+spec/benchmarks I don't remember how many cores the buildbot has but I assume it is 4, so we would be able to track some regressions. -- Anders
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