[petsc-users] PETSc + Julia + MVAPICH2 = Segfault

[Derek Gaston]

Please excuse the slightly off-topic post: but I'm pulling my hair out here
and I'm hoping someone else has seen this before.

I'm calling PETSc from Julia and it's working great on my Mac with MPICH
but I'm seeing a segfault on my Linux cluster using MVAPICH2.  I get the
same segfault both with the "official" PETSc.jl and my own smaller wrapper
MiniPETSc.jl: https://github.com/friedmud/MiniPETSc.jl

Here is the stack trace I'm seeing:

signal (11): Segmentation fault
while loading /home/gastdr/projects/falcon/julia_mpi.jl, in expression
starting on line 5
_int_malloc at /home/gastdr/projects/falcon/root/lib/libmpi.so.12 (unknown
line)
calloc at /home/gastdr/projects/falcon/root/lib/libmpi.so.12 (unknown line)
PetscOptionsCreate at
/home/gastdr/projects/falcon/petsc-3.7.3/src/sys/objects/options.c:2578
PetscInitialize at
/home/gastdr/projects/falcon/petsc-3.7.3/src/sys/objects/pinit.c:761
PetscInitializeNoPointers at
/home/gastdr/projects/falcon/petsc-3.7.3/src/sys/objects/pinit.c:111
__init__ at /home/gastdr/.julia/v0.5/MiniPETSc/src/MiniPETSc.jl:14

The script I'm running is simply just run.jl :

using MiniPETSc

It feels like libmpi is not quite loaded correctly yet.  It does get loaded
by MPI.jl here:
https://github.com/JuliaParallel/MPI.jl/blob/master/src/MPI.jl#L29 and I've
verified that that code is running before PETSc is being initialized.

It looks ok to me... and I've tried a few variations on that dlopen() call
and nothing makes it better.

BTW: MPI.jl is working fine on its own.  I can write pure MPI Julia apps
and run them in parallel on the cluster.  Just need to get this
initialization of PETSc straightened out.

Thanks for any help!

Derek
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