I posted this question on StackOverflow and someone suggested I write to the
OpenMPI community.
https://stackoverflow.com/questions/62223698/mpi-i-o-why-does-my-program-hang-or-misbehave-when-one-process-writes-using-mpi
Below is a little MPI program. It is a simple use of MPI I/O. Process 0
CANCELLED AT
2020-06-05T19:03:59 ***
> On Jun 5, 2020, at 6:55 PM, Jeff Squyres (jsquyres)
> wrote:
>
> On Jun 5, 2020, at 6:35 PM, Stephen Siegel via users
> wrote:
>>
>> [ilyich:12946] 3 more processes have sent help message help-mpi-btl-base.txt
>> / btl:
> On Jun 5, 2020, at 6:55 PM, Jeff Squyres (jsquyres)
> wrote:
>
> On Jun 5, 2020, at 6:35 PM, Stephen Siegel via users
> wrote:
>>
>> [ilyich:12946] 3 more processes have sent help message help-mpi-btl-base.txt
>> / btl:no-nics
&g
>>> On Jun 5, 2020, at 6:55 PM, Jeff Squyres (jsquyres)
>>> wrote:
>>>
>>> On Jun 5, 2020, at 6:35 PM, Stephen Siegel via users
>>> wrote:
>>>>
>>>> [ilyich:12946] 3 more processes have sent help message
>>>>
