[petsc-users] Hang while attempting to run EPSSolve()

[Barry Smith]

  I think it was introduced in 1.8.1 so I think 1.8.0 should be ok, but if it hangs then go back to 1.7.4


> On Feb 13, 2015, at 4:43 PM, Andrew Spott <andrew at spott.us> wrote:
> 
> What version of OpenMPI was this introduced in?  I appear to be finding it in  OpenMPI 1.8.3 and 1.8.1 as well.  Should I go back to 1.8.0 or 1.7.4?
> 
> Thanks,
> 
> -Andrew
> 
> 
> 
> On Fri, Feb 13, 2015 at 2:23 PM, Andrew Spott <andrew at spott.us> wrote:
> 
> Thanks!  You just saved me hours of debugging.
> 
> I’ll look into linking against an earlier implementation of OpenMPI.
> 
> -Andrew
> 
> 
> 
> On Fri, Feb 13, 2015 at 2:21 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:
> 
> 
> Andrew, 
> 
> This is a bug in the 1.8.2 OpenMPI implementation they recently introduced. Can you link against an earlier OpenMPI implementation on the machine? Or do they have MPICH installed you could use? 
> 
> Barry 
> 
> 
> 
> > On Feb 13, 2015, at 3:17 PM, Andrew Spott <andrew at spott.us> wrote: 
> > 
> > Local tests on OS X can’t reproduce, but production tests on our local supercomputer always hang while waiting for a lock. 
> > 
> > The back trace: 
> > 
> > #0 0x00002ba2980df054 in __lll_lock_wait () from /lib64/libpthread.so.0 
> > #1 0x00002ba2980da388 in _L_lock_854 () from /lib64/libpthread.so.0 
> > #2 0x00002ba2980da257 in pthread_mutex_lock () from /lib64/libpthread.so.0 
> > #3 0x00002ba29a1d9e2c in ompi_attr_get_c () from /curc/tools/x_86_64/rh6/openmpi/1.8.2/gcc/4.9.1/lib/libmpi.so.1 
> > #4 0x00002ba29a207f8e in PMPI_Attr_get () from /curc/tools/x_86_64/rh6/openmpi/1.8.2/gcc/4.9.1/lib/libmpi.so.1 
> > #5 0x00002ba294aa111e in Petsc_DelComm_Outer () at /home/ansp6066/local/src/petsc-3.5.3/src/sys/objects/pinit.c:409 
> > #6 0x00002ba29a1dae02 in ompi_attr_delete_all () from /curc/tools/x_86_64/rh6/openmpi/1.8.2/gcc/4.9.1/lib/libmpi.so.1 
> > #7 0x00002ba29a1dcb6c in ompi_comm_free () from /curc/tools/x_86_64/rh6/openmpi/1.8.2/gcc/4.9.1/lib/libmpi.so.1 
> > #8 0x00002ba29a20c713 in PMPI_Comm_free () from /curc/tools/x_86_64/rh6/openmpi/1.8.2/gcc/4.9.1/lib/libmpi.so.1 
> > #9 0x00002ba294aba7cf in PetscSubcommCreate_contiguous(_n_PetscSubcomm*) () from /home/ansp6066/local/petsc-3.5.3-debug/lib/libpetsc.so.3.5 
> > #10 0x00002ba294ab89d5 in PetscSubcommSetType () from /home/ansp6066/local/petsc-3.5.3-debug/lib/libpetsc.so.3.5 
> > #11 0x00002ba2958ce437 in PCSetUp_Redundant(_p_PC*) () from /home/ansp6066/local/petsc-3.5.3-debug/lib/libpetsc.so.3.5 
> > #12 0x00002ba2957a243d in PCSetUp () at /home/ansp6066/local/src/petsc-3.5.3/src/ksp/pc/interface/precon.c:902 
> > #13 0x00002ba2958dea31 in KSPSetUp () at /home/ansp6066/local/src/petsc-3.5.3/src/ksp/ksp/interface/itfunc.c:306 
> > #14 0x00002ba29a7f8e70 in STSetUp_Sinvert(_p_ST*) () at /home/ansp6066/local/src/slepc-3.5.3/src/sys/classes/st/impls/sinvert/sinvert.c:145 
> > #15 0x00002ba29a7e92cf in STSetUp () at /home/ansp6066/local/src/slepc-3.5.3/src/sys/classes/st/interface/stsolve.c:301 
> > #16 0x00002ba29a845ea6 in EPSSetUp () at /home/ansp6066/local/src/slepc-3.5.3/src/eps/interface/epssetup.c:207 
> > #17 0x00002ba29a849f91 in EPSSolve () at /home/ansp6066/local/src/slepc-3.5.3/src/eps/interface/epssolve.c:88 
> > #18 0x0000000000410de5 in petsc::EigenvalueSolver::solve() () at /home/ansp6066/code/petsc_cpp_wrapper/src/petsc_cpp/EigenvalueSolver.cpp:40 
> > #19 0x00000000004065c7 in main () at /home/ansp6066/code/new_work_project/src/main.cpp:165 
> > 
> > This happens for MPI or single process runs. Does anyone have any hints on how I can debug this? I honestly have no idea. 
> > 
> > -Andrew 
> > 
> 
> 
>