On Fri, Jun 1, 2018 at 5:40 PM, Matthew Knepley <[email protected]> wrote:
> On Fri, Jun 1, 2018 at 7:09 PM, Smith, Barry F. <[email protected]> > wrote: > >> >> Fande, >> >> This is a great question. I am forwarding it to Mike Heroux who >> has a high level position in the ECP; because I have similar concerns and >> also don't have a good answer. ParMetis does indeed have a poor license and >> essentially no support. Perhaps Mike has some ideas. >> > > Also, the parallel scalability is crappy (sorry George). > Do we know the underneath reason why the parallels scalability is poor? Poor algorithm? Poor implementation? Here is a list of partitioning packages https://en.wikipedia.org/wiki/Graph_partition#cite_note-patoh-16 Anybody has experiences on any of the listed packages? Fande, > Bill Gropp has proposed in the past developing a new > partitioner along more scalable lines, such as the Teng algorithm used in > Padma's 2013 SC paper > (https://dl.acm.org/citation.cfm?id=2503280). Jed favors a multilevel > approach which I do not understand. > Its a shame that all the development time that went into PT-Scotch could > not produce a scalable, open > partitioner. Also, the label-push stuff seems only to work well for highly > connected graphs, not meshes. > > Matt > > >> >> Barry >> >> >> >> >> On Jun 1, 2018, at 5:46 PM, Kong, Fande <[email protected]> wrote: >> >> Hi Developers, >> >> I have introduced MatPartitioning interface to MOOSE. It is working >> great, and we can use all external partitioning packages via a simple >> interface. >> >> But here is a concern. Almost all the packages are not under development >> any more. Does this make a bug fix more difficult in the future. Also some >> of them have bad licenses. >> >> I was wondering there is any other partitioning package in the community? >> >> Thanks, >> >> Fande, >> >> >> > > > -- > What most experimenters take for granted before they begin their > experiments is infinitely more interesting than any results to which their > experiments lead. > -- Norbert Wiener > > https://www.cse.buffalo.edu/~knepley/ <http://www.caam.rice.edu/~mk51/> >
