hanging in MPI_Finalize, 2 threads

gdb_thread_apply_all_backtrace-232676.txt

Thread 2 (Thread 0x7fa2c5ffb700 (LWP 232683)):
#0  0x00007fa4d186e4bd in write () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa4ccad9ede in ?? () from /usr/lib/python2.7/lib-dynload/_multiprocessing.x86_64-linux-gnu.so
#2  0x00007fa4ccadb481 in ?? () from /usr/lib/python2.7/lib-dynload/_multiprocessing.x86_64-linux-gnu.so
#3  0x00000000004c182d in PyEval_EvalFrameEx ()
#4  0x00000000004b9b66 in PyEval_EvalCodeEx ()
#5  0x00000000004d57a3 in ?? ()
#6  0x00000000004a587e in PyObject_Call ()
#7  0x00000000004be51e in PyEval_EvalFrameEx ()
#8  0x00000000004c141f in PyEval_EvalFrameEx ()
#9  0x00000000004c141f in PyEval_EvalFrameEx ()
#10 0x00000000004b9b66 in PyEval_EvalCodeEx ()
#11 0x00000000004d5669 in ?? ()
#12 0x00000000004eef5e in ?? ()
#13 0x00000000004c166d in PyEval_EvalFrameEx ()
#14 0x00000000004b9b66 in PyEval_EvalCodeEx ()
#15 0x00000000004d5669 in ?? ()
#16 0x00000000004eef5e in ?? ()
#17 0x00000000004a587e in PyObject_Call ()
#18 0x00000000004c5ef0 in PyEval_CallObjectWithKeywords ()
#19 0x0000000000589662 in ?? ()
#20 0x00007fa4d18656ba in start_thread (arg=0x7fa2c5ffb700) at pthread_create.c:333
#21 0x00007fa4d159b41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fa4d1c7e700 (LWP 232676)):
#0  0x00007fa4d186e51d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa4ccada0ee in ?? () from /usr/lib/python2.7/lib-dynload/_multiprocessing.x86_64-linux-gnu.so
#2  0x00007fa4ccadb2b0 in ?? () from /usr/lib/python2.7/lib-dynload/_multiprocessing.x86_64-linux-gnu.so
#3  0x00000000004c0e41 in PyEval_EvalFrameEx ()
#4  0x00000000004b9b66 in PyEval_EvalCodeEx ()
#5  0x00000000004c17c6 in PyEval_EvalFrameEx ()
#6  0x00000000004b9b66 in PyEval_EvalCodeEx ()
#7  0x00000000004d57a3 in ?? ()
#8  0x00000000004a587e in PyObject_Call ()
#9  0x00000000004be51e in PyEval_EvalFrameEx ()
#10 0x00000000004c141f in PyEval_EvalFrameEx ()
#11 0x00000000004c141f in PyEval_EvalFrameEx ()
#12 0x00000000004b9b66 in PyEval_EvalCodeEx ()
#13 0x00000000004d5669 in ?? ()
#14 0x00000000004eef5e in ?? ()
#15 0x00000000004eeb66 in ?? ()
#16 0x00000000004aaafb in ?? ()
#17 0x00000000004c166d in PyEval_EvalFrameEx ()
#18 0x00000000004c141f in PyEval_EvalFrameEx ()
#19 0x00000000004b9b66 in PyEval_EvalCodeEx ()
#20 0x00000000004c1f56 in PyEval_EvalFrameEx ()
#21 0x00000000004b9b66 in PyEval_EvalCodeEx ()
#22 0x00000000004d57a3 in ?? ()
#23 0x00000000004eef5e in ?? ()
#24 0x00000000004eeb66 in ?? ()
#25 0x00000000004aaafb in ?? ()
#26 0x00000000004c166d in PyEval_EvalFrameEx ()
#27 0x00000000004b9b66 in PyEval_EvalCodeEx ()
#28 0x00000000004d57a3 in ?? ()
#29 0x00000000004eef5e in ?? ()
#30 0x00000000004eeb66 in ?? ()
#31 0x00000000004aaafb in ?? ()
#32 0x00000000004c166d in PyEval_EvalFrameEx ()
#33 0x00000000004b9b66 in PyEval_EvalCodeEx ()
#34 0x00000000004c17c6 in PyEval_EvalFrameEx ()
#35 0x00000000004b9b66 in PyEval_EvalCodeEx ()
#36 0x00000000004c17c6 in PyEval_EvalFrameEx ()
#37 0x00000000004b9b66 in PyEval_EvalCodeEx ()
#38 0x00000000004c1f56 in PyEval_EvalFrameEx ()
#39 0x00000000004b9b66 in PyEval_EvalCodeEx ()
#40 0x00000000004c1f56 in PyEval_EvalFrameEx ()
#41 0x00000000004b9b66 in PyEval_EvalCodeEx ()
#42 0x00000000004eb69f in ?? ()
#43 0x00000000004e58f2 in PyRun_FileExFlags ()
#44 0x00000000004e41a6 in PyRun_SimpleFileExFlags ()
#45 0x00000000004938ce in Py_Main ()
#46 0x00007fa4d14b4830 in __libc_start_main (main=0x493370 <main>, argc=7, argv=0x7ffcc9cf02e8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffcc9cf02d8) at ../csu/libc-start.c:291
#47 0x0000000000493299 in _start ()