[slurm-announce] Slurm versions 20.02.4 is now available

[Tim Wickberg]

We are pleased to announce the availability of Slurm version 20.02.4.

This includes an extended set of fixes of varying severity since the 
last maintenance release was made more than two months ago.

Slurm can be downloaded from https://www.schedmd.com/downloads.php .

- Tim

-- 
Tim Wickberg
Chief Technology Officer, SchedMD LLC
Commercial Slurm Development and Support

> * Changes in Slurm 20.02.4
> ==========================
>  -- srun - suppress job step creation warning message when waiting on
>     PrologSlurmctld.
>  -- slurmrestd - fix incorrect return values in data_list_for_each() functions.
>  -- mpi/pmix - fix issue where HetJobs could fail to launch.
>  -- slurmrestd - set content-type header in responses.
>  -- Fix cons_res GRES overallocation for --gres-flags=disable-binding.
>  -- Fix cons_res incorrectly filtering cores with respect to GRES locality for
>     --gres-flags=disable-binding requests.
>  -- Fix regression where a dependency on multiple jobs in a single array using
>     underscores would only add the first job.
>  -- slurmrestd - fix corrupted output due to incorrect use of memcpy().
>  -- slurmrestd - address a number of minor Coverity warnings.
>  -- Handle retry failure when slurmstepd is communicating with srun correctly.
>  -- Fix jobacct_gather possibly duplicate stats when _is_a_lwp error shows up.
>  -- Fix tasks binding to GRES which are closest to the allocated CPUs.
>  -- Fix AMD GPU ROCM 3.5 support.
>  -- Fix handling of job arrays in sacct when querying specific steps.
>  -- slurmrestd - avoid fallback to local socket authentication if JWT
>     authentication is ill-formed.
>  -- slurmrestd - restrict ability of requests to use different authentication
>     plugins.
>  -- slurmrestd - unlink named unix sockets before closing.
>  -- slurmrestd - fix invalid formatting in openapi.json.
>  -- Fix batch jobs stuck in CF state on FrontEnd mode.
>  -- Add a separate explicit error message when rejecting changes to active node
>     features.
>  -- cons_common/job_test - fix slurmctld SIGABRT due to double-free.
>  -- Fix updating reservations to set the duration correctly if updating the
>     start time.
>  -- Fix update reservation to promiscuous mode.
>  -- Fix override of job tasks count to max when ntasks-per-node present.
>  -- Fix min CPUs per node not being at least CPUs per task requested.
>  -- Fix CPUs allocated to match CPUs requested when requesting GRES and
>     threads per core equal to one.
>  -- Fix NodeName config parsing with Boards and without CPUs.
>  -- Ensure SLURM_JOB_USER and SLURM_JOB_UID are set in SrunProlog/Epilog.
>  -- Fix error messages for certain invalid salloc/sbatch/srun options.
>  -- pmi2 - clean up sockets at step termination.
>  -- Fix 'scontrol hold' to work with 'JobName'.
>  -- sbatch - handle --uid/--gid in #SBATCH directives properly.
>  -- Fix race condition in job termination on slurmd.
>  -- Print specific error messages if trying to run use certain
>     priority/multifactor factors that cannot work without SlurmDBD.
>  -- Avoid partial GRES allocation when --gpus-per-job is not satisfied.
>  -- Cray - Avoid referencing a variable outside of it's correct scope when
>     dealing with creating steps within a het job.
>  -- slurmrestd - correctly handle larger addresses from accept().
>  -- Avoid freeing wrong pointer with SlurmctldParameters=max_dbd_msg_action
>     with another option after that.
>  -- Restore MCS label when suspended job is resumed.
>  -- Fix insufficient lock levels.
>  -- slurmrestd - use errno from job submission.
>  -- Fix "user" filter for sacctmgr show transactions.
>  -- Fix preemption logic.
>  -- Fix no_consume GRES for exclusive (whole node) requests.
>  -- Fix regression in 20.02 that caused an infinite loop in slurmctld when
>     requesting --distribution=plane for the job.
>  -- Fix parsing of the --distribution option.
>  -- Add CONF READ_LOCK to _handle_fed_send_job_sync.
>  -- prep/script - always call slurmctld PrEp callback in _run_script().
>  -- Fix node estimation for jobs that use GPUs or --cpus-per-task.
>  -- Fix jobcomp, job_submit and cli_filter Lua implementation plugins causing
>     slurmctld and/or job submission CLI tools segfaults due to bad return
>     handling when the respective Lua script failed to load.
>  -- Fix propagation of gpu options through hetjob components.
>  -- Add SLURM_CLUSTERS environment variable to scancel.
>  -- Fix packing/unpacking of "unlinked" jobs.
>  -- Connect slurmstepd's stderr to srun for steps launched with --pty.
>  -- Handle MPS correctly when doing exclusive allocations.
>  -- slurmrestd - fix compiling against libhttpparser in a non-default path.
>  -- slurmrestd - avoid compilation issues with libhttpparser < 2.6.
>  -- Fix compile issues when compiling slurmrestd without --enable-debug.
>  -- Reset idle time on a reservation that is getting purged.
>  -- Fix reoccurring reservations that have Purge_comp= to keep correct
>     duration if they are purged.
>  -- scontrol - changed the "PROMISCUOUS" flag to "MAGNETIC"
>  -- Early return from epilog_set_env in case of no_consume.
>  -- Fix cons_common/job_test start time discovery logic to prevent skewed
>     results between "will run test" executions.
>  -- Ensure TRESRunMins limits are maintained during "scontrol reconfigure".
>  -- Improve error message when host lookup fails.