On Fri, Jun 1, 2018 at 10:22 PM, Fande Kong <[email protected]> wrote:
> 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? > Algorithmic problems. > 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? > I randomly tried to get one of these, and failed. These lists are pointless without repository links. Matt > 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/> >> > > -- 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/>
