[slurm-users] Slurm version 20.02.0 is now available

[Dean Schulze]

So it sounds like the simplest approach would be to remove libcons_common
from the make file and copy cons_common.[ch] into my project and provide my
own  implementations in the appropriate functions in cons_common.c.

On Wed, Feb 26, 2020 at 6:12 AM Jeffrey T Frey <frey at udel.edu> wrote:

> Did you reuse the 20.02 select/cons_res/Makefile.{in,am} in your plugin's
> source?  You probably will have to re-model your plugin after the
> select/cray_aries plugin if you need to override those two functions (it
> also defines its own select_p_job_begin() and doesn't link against
> libcons_common.la).  Naturally, omitting libcons_common.a from your
> plugin doesn't help if you use other functions defined in select/common.
>
>
>
>
>
> > On Feb 26, 2020, at 00:48 , Dean Schulze <dean.w.schulze at gmail.com>
> wrote:
> >
> > There was a major refactoring between the 19.05 and 20.02 code.  Most of
> the callbacks for select plugins were moved to cons_common.  I have a
> plugin for 19.05 that depends on two of those callbacks:
> select_p_job_begin() and select_p_job_fini().  My plugin is a copy of the
> select/cons_res plugin, but when I implement those functions in my plugin I
> get this error because those functions already exist in cons_common:
> >
> >
> /home/dean/src/slurm.versions/slurm-20.02/slurm-20.02.0/src/plugins/select/cons_common/cons_common.c:1134:
> multiple definition of `select_p_job_begin';
> .libs/select_liqid_cons_res.o:/home/dean/src/slurm.versions/slurm-20.02/slurm-20.02.0/src/plugins/select/liqid_cons_res/select_liqid_cons_res.c:559:
> first defined here
> > /usr/bin/ld: ../cons_common/.libs/libcons_common.a(cons_common.o): in
> function `select_p_job_fini':
> >
> /home/dean/src/slurm.versions/slurm-20.02/slurm-20.02.0/src/plugins/select/cons_common/cons_common.c:1561:
> multiple definition of `select_p_job_fini';
> .libs/select_liqid_cons_res.o:/home/dean/src/slurm.versions/slurm-20.02/slurm-20.02.0/src/plugins/select/liqid_cons_res/select_liqid_cons_res.c:607:
> first defined here
> > collect2: error: ld returned 1 exit status
> >
> > Since only one select plugin can be used at a time (determined in
> slurm.conf) I could put my code in the cons_common implementation of those
> functions, but if I ever switch plugins then my plugin code will get
> executed when it shouldn't be.
> >
> > How can I "override" those callbacks in my own plugin?  This isn't Java
> (but it sure looks like the slurm code tries to do Java in C).
> >
> >
> > On Tue, Feb 25, 2020 at 11:57 AM Tim Wickberg <tim at schedmd.com> wrote:
> > After 9 months of development and testing we are pleased to announce the
> > availability of Slurm version 20.02.0!
> >
> > Downloads are available from https://www.schedmd.com/downloads.php.
> >
> > Highlights of the 20.02 release include:
> >
> > - A "configless" method of deploying Slurm within the cluster, in which
> > the slurmd and user commands can use DNS SRV records to locate the
> > slurmctld host and automatically download the relevant configuration
> files.
> >
> > - A new "auth/jwt" authentication mechanism using JWT, which can help
> > integrate untrusted external systems into the cluster.
> >
> > - A new "slurmrestd" command/daemon which translates a new Slurm REST
> > API into the underlying libslurm calls.
> >
> > - Packaging fixes for RHEL8 distributions.
> >
> > - Significant performance improvements to the backfill scheduler, as
> > well as to string construction and processing.
> >
> > Thank you to all customers, partners, and community members who
> > contributed to this release.
> >
> > As with past releases, the documentation available at
> > https://slurm.schedmd.com has been updated to the 20.02 release. Past
> > versions are available in the archive. This release also marks the end
> > of support for the 18.08 release. The 19.05 release will remain
> > supported up until the 20.11 release in November, but will not see as
> > frequent updates, and bug-fixes will be targeted for the 20.02
> > maintenance releases going forward.
> >
> > --
> > Tim Wickberg
> > Chief Technology Officer, SchedMD
> > Commercial Slurm Development and Support
> >
>
>
>
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