Your message dated Thu, 02 Sep 2021 13:50:02 +0000
with message-id <[email protected]>
and subject line Bug#979041: fixed in openmpi 4.1.1-4
has caused the Debian Bug report #979041,
regarding libopempi3: aborts python code due to libfabric fork() issues
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
979041: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=979041
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: libopenmpi3
Version: 4.1.0-3
Severity: serious
The revert of pmix has fixed some issues, but python packages still show
autopkgtest regressions in dolfin[1], gpaw[2], gyoto[3] and mshr[4] .
The error is always like this:
|A process has executed an operation involving a call
|to the fork() system call to create a child process.
|
|As a result, the libfabric EFA provider is operating in
|a condition that could result in memory corruption or
|other system errors.
|
|For the libfabric EFA provider to work safely when fork()
|is called, you will need to set the following environment
|variable:
| RDMAV_FORK_SAFE
|
|However, setting this environment variable can result in
|signficant performance impact to your application due to
|increased cost of memory registration.
|
|You may want to check with your application vendor to see
|if an application-level alternative (of not using fork)
|exists.
|
|Your job will now abort.
If I export RDMAV_FORK_SAFE=1, the tests run fine, but (i) it seems
something in OpenMPI has changed so that those programs no longer run
and (ii) the warnings about performance issues are to be considered.
Also note that it seems those errors only happen on amd64/i386, the ARM
ports run fine, maybe because of missing libfabric-related
features/packages?
Michael
[1] https://ci.debian.net/data/autopkgtest/testing/amd64/d/dolfin/9184050/log.gz
[2] https://ci.debian.net/data/autopkgtest/testing/amd64/g/gpaw/9302177/log.gz
[3] https://ci.debian.net/data/autopkgtest/testing/amd64/g/gyoto/9303088/log.gz
[4] https://ci.debian.net/data/autopkgtest/testing/amd64/m/mshr/9300183/log.gz
--- End Message ---
--- Begin Message ---
Source: openmpi
Source-Version: 4.1.1-4
Done: Alastair McKinstry <[email protected]>
We believe that the bug you reported is fixed in the latest version of
openmpi, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Alastair McKinstry <[email protected]> (supplier of updated openmpi package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Format: 1.8
Date: Thu, 02 Sep 2021 13:31:02 +0100
Source: openmpi
Architecture: source
Version: 4.1.1-4
Distribution: unstable
Urgency: medium
Maintainer: Alastair McKinstry <[email protected]>
Changed-By: Alastair McKinstry <[email protected]>
Closes: 979041
Changes:
openmpi (4.1.1-4) unstable; urgency=medium
.
* Don't ship libopen-orted-mpir.so. Patch from upstream for 4.1.2
internal lib only.
* Also exclude mtl ofi to deal with libfabric fork in tests.
Closes: #979041
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