From: Bao K. <pae...@gm...> - 2012-01-25 05:10:50
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Dear all, I want to know some information on the scalability of Libmesh. How many processors has Libmesh been scaled to? Is there any document on how the libmesh work on some supercomter, such as Blue Gene? Libmesh appears to be very good, while the scalability is one of my important concerns. Thank you very much. Best Regards, Kai |
From: Derek G. <fri...@gm...> - 2012-01-25 14:58:45
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We've achieved great scaling out to 12,000 cores with ~250 million dofs. At that size though things do get more difficult. You have to use ParallelMesh along with a parallel mesh / solution format (like NEMESIS). It is definitely possible to go further... But that's the largest set of procs we had access to. Derek Sent from my iPad On Jan 24, 2012, at 10:10 PM, Bao Kai <pae...@gm...> wrote: > Dear all, > > I want to know some information on the scalability of Libmesh. How > many processors has Libmesh been scaled to? Is there any document on > how the libmesh work on some supercomter, such as Blue Gene? > > Libmesh appears to be very good, while the scalability is one of my > important concerns. > > Thank you very much. > > > Best Regards, > Kai > > ------------------------------------------------------------------------------ > Keep Your Developer Skills Current with LearnDevNow! > The most comprehensive online learning library for Microsoft developers > is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, > Metro Style Apps, more. Free future releases when you subscribe now! > http://p.sf.net/sfu/learndevnow-d2d > _______________________________________________ > Libmesh-users mailing list > Lib...@li... > https://lists.sourceforge.net/lists/listinfo/libmesh-users |
From: Bao K. <pae...@gm...> - 2012-01-25 15:50:54
|
Dear Derek, Thank you very much for your response. I am really glad that libmesh can scale to 12,000 cores now, and I am thinking to give it a shot on my research. About half a year ago, some people told me that libmesh can only scale to hundreds of processors on a cluster since libmesh stores some global information one every node. It seems that some big improvements has been done, right? Can you tell me something on how the ParallelMesh works? Do we still need to store some global information on somewhere or a totally different method is employed now? The platform I want to use is a IBM Blue Gene/P machine, which hold really many cores while only 4G memory is available on each node. So how the ParallelMesh works is really a big concern to me. And also, is dynamic remeshing supported in parallel? Thank you very much. Best Regards, Kai On Wed, Jan 25, 2012 at 5:58 PM, Derek Gaston <fri...@gm...> wrote: > We've achieved great scaling out to 12,000 cores with ~250 million > dofs. At that size though things do get more difficult. You have to > use ParallelMesh along with a parallel mesh / solution format (like > NEMESIS). > > It is definitely possible to go further... But that's the largest set > of procs we had access to. > > Derek > > Sent from my iPad > > On Jan 24, 2012, at 10:10 PM, Bao Kai <pae...@gm...> wrote: > >> Dear all, >> >> I want to know some information on the scalability of Libmesh. How >> many processors has Libmesh been scaled to? Is there any document on >> how the libmesh work on some supercomter, such as Blue Gene? >> >> Libmesh appears to be very good, while the scalability is one of my >> important concerns. >> >> Thank you very much. >> >> >> Best Regards, >> Kai >> >> ------------------------------------------------------------------------------ >> Keep Your Developer Skills Current with LearnDevNow! >> The most comprehensive online learning library for Microsoft developers >> is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, >> Metro Style Apps, more. Free future releases when you subscribe now! >> http://p.sf.net/sfu/learndevnow-d2d >> _______________________________________________ >> Libmesh-users mailing list >> Lib...@li... >> https://lists.sourceforge.net/lists/listinfo/libmesh-users |