Your message dated Thu, 27 Nov 2025 22:04:09 +0000
with message-id <[email protected]>
and subject line Bug#1087184: fixed in examl 3.0.22-7
has caused the Debian Bug report #1087184,
regarding examl: fails to run with tight cores count
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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--
1087184: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1087184
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: examl
Version: 3.0.22-5
Severity: normal
While trying to give a hand with openmpi 5 transition, Salsa CI
autopkgtest for examl[1] failed with the following error:
+ examl -t testData/49.tree -m GAMMA -s 49.unpartitioned.binary -n T1
Run MPI on 2 of 2 available processors
Use /usr/lib/examl/bin/examl-avx2 and 2 processors
--------------------------------------------------------------------------
There are not enough slots available in the system to satisfy the 2
slots that were requested by the application:
/usr/lib/examl/bin/examl-avx2
Either request fewer procs for your application, or make more slots
available for use.
A "slot" is the PRRTE term for an allocatable unit where we can
launch a process. The number of slots available are defined by the
environment in which PRRTE processes are run:
1. Hostfile, via "slots=N" clauses (N defaults to number of
processor cores if not provided)
2. The --host command line parameter, via a ":N" suffix on the
hostname (N defaults to 1 if not provided)
3. Resource manager (e.g., SLURM, PBS/Torque, LSF, etc.)
4. If none of a hostfile, the --host command line parameter, or an
RM is present, PRRTE defaults to the number of processor cores
In all the above cases, if you want PRRTE to default to the number
of hardware threads instead of the number of processor cores, use the
--use-hwthread-cpus option.
Alternatively, you can use the --map-by :OVERSUBSCRIBE option to ignore
the
number of available slots when deciding the number of processes to
launch.
--------------------------------------------------------------------------
[1]: https://salsa.debian.org/med-team/examl/-/jobs/6561673
I initially thought that examl needed 2 cores minimum, but the
error is a not as clear as I first thought. It seems that examl
did capture two cores and try to make use of both, but for some
reason, only one was usable. As far as I can tell, the error
was repeatable over two consecutive runs in Salsa CI. I did not
hit problems when testing locally, and there are no visible
problems in debci since the month of April[2], so this is not
too catastrophic neither.
[2]: https://ci.debian.net/packages/e/examl/unstable/amd64/
For information,
--
.''`. Étienne Mollier <[email protected]>
: :' : pgp: 8f91 b227 c7d6 f2b1 948c 8236 793c f67e 8f0d 11da
`. `' sent from /dev/pts/4, please excuse my verbosity
`- on air: Erik Norlander - Music Machine
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--- End Message ---
--- Begin Message ---
Source: examl
Source-Version: 3.0.22-7
Done: Étienne Mollier <[email protected]>
We believe that the bug you reported is fixed in the latest version of
examl, 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.
Étienne Mollier <[email protected]> (supplier of updated examl 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: SHA512
Format: 1.8
Date: Thu, 27 Nov 2025 22:31:56 +0100
Source: examl
Architecture: source
Version: 3.0.22-7
Distribution: unstable
Urgency: medium
Maintainer: Debian Med Packaging Team
<[email protected]>
Changed-By: Étienne Mollier <[email protected]>
Closes: 1087184 1105362
Changes:
examl (3.0.22-7) unstable; urgency=medium
.
* d/b/simd-dispatch: fix possible off-by-one error.
The error affects automated estimation of examl cores count usage.
(Closes: #1087184)
* d/watch: convert to v5 Github template.
* d/control: drop redundant Rules-Requires-Root: no.
* d/control: declare compliance to standards version 4.7.2.
* fix-makefile-shuffle.patch: new: prevent spurious clean. (Closes: #1105362)
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