Roy, With libMesh SVN head, The assembly is very quickly. libMesh SVN head: ------------------------------------------------------------------------------ | Matrix Assembly Performance: Alive time=0.320177, Active time=0.301312 | ------------------------------------------------------------------------------ | Event nCalls Total Avg Percent of | | Time Time Active Time | |------------------------------------------------------------------------------| | | | Bc 1920 0.0045 0.000002 1.50 | | Ke 1920 0.2043 0.000106 67.80 | | elem init 1920 0.0253 0.000013 8.40 | | matrix insertion 1920 0.0672 0.000035 22.30 | ------------------------------------------------------------------------------ | Totals: 7680 0.3013 100.00 | ------------------------------------------------------------------------------
while in libMesh0.6.2: ------------------------------------------------------------------------------ | Matrix Assembly Performance: Alive time=139.585, Active time=139.556 | ------------------------------------------------------------------------------ | Event nCalls Total Avg Percent of | | Time Time Active Time | |------------------------------------------------------------------------------| | | | Bc 1920 0.0057 0.000003 0.00 | | Ke 1920 0.2098 0.000109 0.15 | | elem init 1920 0.1110 0.000058 0.08 | | matrix insertion 1920 139.2289 0.072515 99.77 | ------------------------------------------------------------------------------ | Totals: 7680 139.5555 100.00 | ------------------------------------------------------------------------------ 2008/8/1 Roy Stogner <[EMAIL PROTECTED]> > > On Fri, 1 Aug 2008, Shengli Xu wrote: > > Derek, Here is the result in optimized mode: >> > > libMesh0.5.0: >> | matrix insertion 1920 0.0688 0.000036 22.60 >> > > libMesh0.6.2: >> | matrix insertion 1920 137.5529 0.071642 >> 98.09 | >> > > > That's got to be a sparsity problem, then. What's the behavior like > with the libMesh SVN head? And what's the behavior like if you run > your 0.6.2 app with "--implicit_neighbor_dofs" on the command like? > --- > Roy > -- 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
