Public bug reported:

To reproduce, install the mpi4py package from Ubuntu. Enter

$ python

and then run:

>>> from mpi4py import MPI

An error message like the following is printed, and python exits:
**************************************************************************
[compy:04228] mca: base: component_find: unable to open 
/usr/lib/openmpi/lib/openmpi/mca_shmem_posix: 
/usr/lib/openmpi/lib/openmpi/mca_shmem_posix.so: undefined symbol: 
opal_shmem_base_framework (ignored)
[compy:04228] mca: base: component_find: unable to open 
/usr/lib/openmpi/lib/openmpi/mca_shmem_mmap: 
/usr/lib/openmpi/lib/openmpi/mca_shmem_mmap.so: undefined symbol: 
opal_show_help (ignored)
[compy:04228] mca: base: component_find: unable to open 
/usr/lib/openmpi/lib/openmpi/mca_shmem_sysv: 
/usr/lib/openmpi/lib/openmpi/mca_shmem_sysv.so: undefined symbol: 
opal_show_help (ignored)
--------------------------------------------------------------------------
It looks like opal_init failed for some reason; your parallel process is
likely to abort.  There are many reasons that a parallel process can
fail during opal_init; some of which are due to configuration or
environment problems.  This failure appears to be an internal failure;
here's some additional information (which may only be relevant to an
Open MPI developer):

  opal_shmem_base_select failed
  --> Returned value -1 instead of OPAL_SUCCESS
--------------------------------------------------------------------------
--------------------------------------------------------------------------
It looks like orte_init failed for some reason; your parallel process is
likely to abort.  There are many reasons that a parallel process can
fail during orte_init; some of which are due to configuration or
environment problems.  This failure appears to be an internal failure;
here's some additional information (which may only be relevant to an
Open MPI developer):

  opal_init failed
  --> Returned value Error (-1) instead of ORTE_SUCCESS
--------------------------------------------------------------------------
--------------------------------------------------------------------------
It looks like MPI_INIT failed for some reason; your parallel process is
likely to abort.  There are many reasons that a parallel process can
fail during MPI_INIT; some of which are due to configuration or environment
problems.  This failure appears to be an internal failure; here's some
additional information (which may only be relevant to an Open MPI
developer):

  ompi_mpi_init: ompi_rte_init failed
  --> Returned "Error" (-1) instead of "Success" (0)
--------------------------------------------------------------------------
*** An error occurred in MPI_Init_thread
*** on a NULL communicator
*** MPI_ERRORS_ARE_FATAL (processes in this communicator will now abort,
***    and potentially your MPI job)
[compy:4228] Local abort before MPI_INIT completed successfully; not able to 
aggregate error messages, and not able to guarantee that all other processes 
were killed!
**************************************************************************

It appears to have something to do with how the mpi4py package was
built. The following is a work-around which involves removing the Ubuntu
package. First, remove it:

$ sudo apt-get remove mpi4py

Then install the Open MPI headers (the next step involves building
mpi4py) and pip:

$ sudo apt-get install libopenmpi-dev python-pip

Finally install mpi4py:

$ sudo pip install mpi4py

If you try the python command above, it should now work fine.

** Affects: mpi4py (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

  To reproduce, install the mpi4py package from Ubuntu. Enter
  
  $ python
  
  and then run:
  
  >>> from mpi4py import MPI
  
  An error message like the following is printed, and python exits:
- 
******************************************************************************************
- 
+ **************************************************************************
  [compy:04228] mca: base: component_find: unable to open 
/usr/lib/openmpi/lib/openmpi/mca_shmem_posix: 
/usr/lib/openmpi/lib/openmpi/mca_shmem_posix.so: undefined symbol: 
opal_shmem_base_framework (ignored)
  [compy:04228] mca: base: component_find: unable to open 
/usr/lib/openmpi/lib/openmpi/mca_shmem_mmap: 
/usr/lib/openmpi/lib/openmpi/mca_shmem_mmap.so: undefined symbol: 
opal_show_help (ignored)
  [compy:04228] mca: base: component_find: unable to open 
/usr/lib/openmpi/lib/openmpi/mca_shmem_sysv: 
/usr/lib/openmpi/lib/openmpi/mca_shmem_sysv.so: undefined symbol: 
opal_show_help (ignored)
  --------------------------------------------------------------------------
  It looks like opal_init failed for some reason; your parallel process is
  likely to abort.  There are many reasons that a parallel process can
  fail during opal_init; some of which are due to configuration or
  environment problems.  This failure appears to be an internal failure;
  here's some additional information (which may only be relevant to an
  Open MPI developer):
  
-   opal_shmem_base_select failed
-   --> Returned value -1 instead of OPAL_SUCCESS
+   opal_shmem_base_select failed
+   --> Returned value -1 instead of OPAL_SUCCESS
  --------------------------------------------------------------------------
  --------------------------------------------------------------------------
  It looks like orte_init failed for some reason; your parallel process is
  likely to abort.  There are many reasons that a parallel process can
  fail during orte_init; some of which are due to configuration or
  environment problems.  This failure appears to be an internal failure;
  here's some additional information (which may only be relevant to an
  Open MPI developer):
  
-   opal_init failed
-   --> Returned value Error (-1) instead of ORTE_SUCCESS
+   opal_init failed
+   --> Returned value Error (-1) instead of ORTE_SUCCESS
  --------------------------------------------------------------------------
  --------------------------------------------------------------------------
  It looks like MPI_INIT failed for some reason; your parallel process is
  likely to abort.  There are many reasons that a parallel process can
  fail during MPI_INIT; some of which are due to configuration or environment
  problems.  This failure appears to be an internal failure; here's some
  additional information (which may only be relevant to an Open MPI
  developer):
  
-   ompi_mpi_init: ompi_rte_init failed
-   --> Returned "Error" (-1) instead of "Success" (0)
+   ompi_mpi_init: ompi_rte_init failed
+   --> Returned "Error" (-1) instead of "Success" (0)
  --------------------------------------------------------------------------
  *** An error occurred in MPI_Init_thread
  *** on a NULL communicator
  *** MPI_ERRORS_ARE_FATAL (processes in this communicator will now abort,
  ***    and potentially your MPI job)
  [compy:4228] Local abort before MPI_INIT completed successfully; not able to 
aggregate error messages, and not able to guarantee that all other processes 
were killed!
- 
******************************************************************************************
+ **************************************************************************
  
- 
- It appears to have something to do with how the mpi4py package was built. The 
following is a work-around which involves removing the Ubuntu package. First, 
remove it:
+ It appears to have something to do with how the mpi4py package was
+ built. The following is a work-around which involves removing the Ubuntu
+ package. First, remove it:
  
  $ sudo apt-get remove mpi4py
  
  Then install the Open MPI headers (the next step involves building
  mpi4py) and pip:
  
  $ sudo apt-get install libopenmpi-dev python-pip
  
  Finally install mpi4py:
  
  $ sudo pip install mpi4py
  
  If you try the python command above, it should now work fine.

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https://bugs.launchpad.net/bugs/1583432

Title:
  Importing mpi4py crashes Python (2.7)

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