2008/7/30 Roy Stogner <[EMAIL PROTECTED]> > > On Wed, 30 Jul 2008, Shengli Xu wrote: > > But in next iteration the refinement level is 2, The process of system >> assembling is very very slowly. It took more than 12 hours when only >> assembled 30000 elements. The system and mesh information is : >> > > n_dofs()=253785 >> > > Is the system too large for only one processor? >> > > Large enough that you can't quickly solve many time steps on one > processor, maybe... but large enough that one assembly should take 12 > hours? Definitely not. There's some sort of bug here. If you could > any more specific profiling information, it would help.
Roy, Could you tell me what specific profiling information should be gotten? I have to solve this problem. The only culprit I've heard of that can destroy your assembly speed is if > you > try to assemble a bunch of matrices with entries outside PETSc's > precalculated sparsity pattern, but before we figure out why that > might be happening to you it would be a good idea to verify that > that's what's happening. > --- > Roy > -- Yours Sincerely Shengli Xu ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
