import h5py initializes mpi prematurely

[robnagler]

importing h5py inits mpi which then starts orted:

$ python -c 'import h5py, os; os.system("ps -x|grep orted")'
12485 pts/6    Sl+    0:00 python -c import h5py, os; os.system("ps -x|grep orted")
12530 ?        Ssl    0:00 orted --hnp --set-sid --report-uri 11 --singleton-died-pipe 12 -mca state_novm_select 1
12543 pts/6    S+     0:00 sh -c ps -x|grep orted
12545 pts/6    S+     0:00 grep orted

orted inherits the parent's open files so the open sockets are a mess:

$ lsof -i -P
COMMAND     PID    USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
sirepo    12630 vagrant    3u  IPv4 379187      0t0  TCP *:8000 (LISTEN)
sirepo    12630 vagrant   24u  IPv4 379177      0t0  TCP *:1024 (LISTEN)
orted     12678 vagrant   16u  IPv4 378655      0t0  TCP *:51099 (LISTEN)
python2.7 12688 vagrant    3u  IPv4 379187      0t0  TCP *:8000 (LISTEN)
python2.7 12688 vagrant    4u  IPv4 379187      0t0  TCP *:8000 (LISTEN)
python2.7 12688 vagrant   24u  IPv4 379177      0t0  TCP *:1024 (LISTEN)
python2.7 12688 vagrant   30u  IPv4 379191      0t0  TCP *:1025 (LISTEN)
orted     12692 vagrant    3u  IPv4 379187      0t0  TCP *:8000 (LISTEN)
orted     12692 vagrant   19u  IPv4 378672      0t0  TCP *:39617 (LISTEN)
orted     12692 vagrant   24u  IPv4 379177      0t0  TCP *:1024 (LISTEN)

To assist reproducing bugs, please include the following:

• Operating System (e.g. Windows 10, MacOS 10.11, Ubuntu 16.04.2 LTS, CentOS 7)
  Fedora 27
• Python version (e.g. 2.7, 3.5)
  2.7.14
• Where Python was acquired (e.g. system Python on MacOS or Linux, Anaconda on
  Windows)
  pyenv
• h5py version (e.g. 2.6)
  2.8.0
• HDF5 version (e.g. 1.8.17)
  hdf5-openmpi-static-1.8.18-11.fc27.x86_64
  hdf5-1.8.18-11.fc27.x86_64
  hdf5-openmpi-devel-1.8.18-11.fc27.x86_64
  hdf5-devel-1.8.18-11.fc27.x86_64
  hdf5-openmpi-1.8.18-11.fc27.x86_64
• The full traceback/stack trace shown (if it appears)
  n/a

python -c 'import h5py; print(h5py.version.info)'

python -c 'import h5py; print(h5py.version.info)'
Summary of the h5py configuration
---------------------------------

h5py    2.8.0
HDF5    1.8.18
Python  2.7.14 (default, Jul  7 2018, 02:04:27)
[GCC 7.3.1 20180303 (Red Hat 7.3.1-5)]
sys.platform    linux2
sys.maxsize     9223372036854775807
numpy   1.14.5

where python should be substituted for the path to python used to install
h5py with.

[tacaswell]

This seems to be related to #1079 ?

[1313e]

Could indeed be related to the issue I raised in #1079 , which would explain the warning that I am getting there.