Bug#946986: python3-h5py: h5py does not play nicely with subprocess and mpirun

[Rafael Laboissière]

Control: forwarded -1 https://github.com/h5py/h5py/issues/1467

* Drew Parsons <dparsons at debian.org> [2020-01-22 23:49]:

> On 2020-01-22 20:19, Rafael Laboissière wrote:
>> * Drew Parsons <dparsons at debian.org> [2020-01-15 22:25]:
>>
>>> This is one very strange bug.  Why would the mere fact that h5py 
>>> is loaded affect what subprocess does?
>>
>> Yes, this is completely mysterious.  However, the bug is real.
>>
>> It is probably an upstream problem.  I would love to forward the 
>> present report upstream, but I have no idea to where send it.
>>
>> I am inclined to raise the severity of this bug report from 
>> “important” to “serious”, because it is blocking Bug#938925, which has 
>> severity “serious” and is preventing xmds2 to enter testing.
>
>
> h5py have done some work on their mpi support (cf. 
> https://github.com/h5py/h5py/issues/1364).  They've created pytest-mpi 
> to help with tests. It's currently in the debian NEW queue.
>
> Thibaut's idea in bug#944769 to ignore mpi if there's only one process 
> will be relatively straightforward to implement I think (I've had 
> other tasks to finish before I get onto that). I guess that will fix 
> (or at least workaround) this problem.
>
> Might be worth bringing to the attention of the subprocess developers. 
> I figure they'll either be interested to know about the problem or 
> will have a simple explanation.

Thanks for your comments.  I am noting hereby that I forwarded the 
present bug report as an issue in the GitHub repository for h5py.

What is the bug/issue tracker for Python's subprocess development?

Best,

Rafael