On Tue, Feb 16, 2016 at 10:19 PM, Harshad Sahasrabudhe <hsaha...@purdue.edu> wrote:
> Hi John, > > I was running an older version of LibMesh when I got the previous segfault > in libMesh::DofMap::clear_sparsity(), which happened after changing the > assemble for CondensedEigenSystem to only set diagonal dofs in B. Then I > upgraded to libMesh 0.9.4 and that segfault went away. Now the code runs > fine with 1 and 2 processes, however it segfaults with 4 or more processes > after printing the following message: > > PARMETIS ERROR: The sum of tpwgts for constraint #0 is not 1.0 > > I also get this error message: Assertion `((min_procid == > this->processor_id()) && obj) || (min_procid != this->processor_id())' > failed. > > Here's the stacktrace: > > #22 0x0000003f212bcd22 in __cxa_throw () from /usr/lib64/libstdc++.so.6 > #23 0x00002b5818f65382 in void > libMesh::ParallelMesh::libmesh_assert_valid_parallel_object_ids<libMesh::Elem>(libMesh::mapvector<libMesh::Elem*, > unsigned int> const&) const () from > /home/hsahasra/NEMO5/libs/libmesh/libmesh/.libs/libmesh_dbg.so.0 > #24 0x00002b5818f572b0 in > libMesh::ParallelMesh::libmesh_assert_valid_parallel_ids() const () from > /home/hsahasra/NEMO5/libs/libmesh/libmesh/.libs/libmesh_dbg.so.0 > #25 0x00002b5818f57431 in > libMesh::ParallelMesh::renumber_nodes_and_elements() () from > /home/hsahasra/NEMO5/libs/libmesh/libmesh/.libs/libmesh_dbg.so.0 > #26 0x00002b5818e4224d in libMesh::MeshBase::prepare_for_use(bool, bool) > () from /home/hsahasra/NEMO5/libs/libmesh/libmesh/.libs/libmesh_dbg.so.0 > > > I searched for this error on Google and found a few earlier posts related > to LibMesh using a different PARMETIS than PETSc. Were you able to get a > fix for this issue? > Yes, libmesh now detects if PETSc has its own Metis/ParMetis and uses those instead of building it's own. This feature should be in 0.9.5 which was released a few weeks ago, and which I'd strongly recommend upgrading to. It should be fairly painless if your code is already working with 0.9.4. -- John ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _______________________________________________ Libmesh-users mailing list Libmesh-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-users
