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

[Drew Parsons]

On 2020-01-23 18:15, Thibaut Paumard wrote:
> Hi,
> 
> Le 22/01/2020 à 16:49, Drew Parsons a écrit :
>> 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.
> 
> I'm not sure subprocess is involved at all, it may be that MPI_Init()
> simply dies because h5py has already called it earlier.
> 
> Hi have no time for testing right now, but a simple printf() before
> calling MPI_Init() should tell.


That sounds plausible.


Anyway, for the record the subprocess source would be
https://github.com/python/cpython/blob/master/Lib/subprocess.py