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Subject: Re: openmpi warning "unable to open debugger attach fifo"
To: cygwin AT cygwin DOT com
References: <alpine DOT LFD DOT 2 DOT 21 DOT 2001271037420 DOT 2187 AT sb> <a99b400e-2b9d-ea17-dc67-017e1a36ae00 AT cornell DOT edu> <a7942e52-5e80-e3fd-ad37-c1292dab99c1 AT cornell DOT edu>
From: Marco Atzeri <marco DOT atzeri AT gmail DOT com>
Message-ID: <9ef4f74e-3ee6-fef9-1fe7-d861cf7c6f04@gmail.com>
Date: Mon, 27 Jan 2020 22:36:29 +0100
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Am 27.01.2020 um 22:28 schrieb Ken Brown:
> On 1/27/2020 1:49 PM, Ken Brown wrote:
>> On 1/27/2020 11:41 AM, Satish Balay wrote:
>>> Hi,
>>>
>>> On using openmpi from cygwin - I'm getting the following warning. Any idea how to avoid this?
>>>
>>>>>>>>>
>>> balay AT ps5 ~
>>> $ /usr/bin/mpiexec -n 1 hostname
>>> ps5
>>> [ps5:00491] [[23611,0],0] unable to open debugger attach fifo
>>
>> The attempt to open a FIFO in the source file orte/orted/orted_submit.c:2862 is
>> failing due to a Cygwin bug.  I think I see how to fix it.  Stay tuned.
> 
> Sorry, I spoke too soon and was misinterpreting some code I was reading.  I
> don't see a Cygwin bug after all.  Moreover, if I run your command under gdb, I
> don't get an error.
> 
> Ken
> 

I will look if the release candidate for 3.1.6 has still that issue.
3.1.5 had another larger warning that I silenced and that was due
to an upstream bug that has been solved.
This warning passed below my radar after I solved the bigger one.

Unfortunately OpenMPI takes age to build so do not expect any
too early..

Regards
Marco


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