We are pleased to announce the availability of Slurm version 21.08.2.
There is one significant change include in this maintenance release: the
removal of support for the long-misunderstood TaskAffinity=yes option in
cgroup.conf. Please consider using "TaskPlugins=cgroup,affinity" in
slurm.conf as an option.
Unfortunately a number of issues identified where the processor affinity
settings from this now-unsupported approach would be calculated
incorrectly, leading to potential performance issues.
SchedMD had been previously planning to remove this support in the next
22.05 release, but a number of issues reported after the cgroup code
refactoring have led us to remove this now, rather than try to correct
issues with what has not been a recommended configuration for some time.
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 21.08.2
==========================
-- slurmctld - fix how the max number of cores on a node in a partition are
calculated when the partition contains multi-socket nodes. This in turn
corrects certain jobs node count estimations displayed client-side.
-- job_submit/cray_aries - fix "craynetwork" GRES specification after changes
introduced in 21.08.0rc1 that made TRES always have a type prefix.
-- Ignore nonsensical check in the slurmd for [Pro|Epi]logSlurmctld.
-- Fix writing to stderr/syslog when systemd runs slurmctld in the foreground.
-- Fix locking around log level setting routines.
-- Fix issue with updating job started with node range.
-- Fix issue with nodes not clearing state in the database when the slurmctld
is started with clean-start.
-- Fix hetjob components > 1 timing out due to InactiveLimit.
-- Fix sprio printing -nan for normalized association priority if
PriorityWeightAssoc was not defined.
-- Disallow FirstJobId=0.
-- Preserve job start info in the database for a requeued job that hadn't
registered the first time in the database yet.
-- Only send one message on prolog failure from the slurmd.
-- Remove support for TaskAffinity=yes in cgroup.conf.
-- accounting_storage/mysql - fix issue where querying jobs via sacct
--whole-hetjob=yes or slurmrestd (which automatically includes this flag)
could in some cases return more records than expected.
-- Fix issue for preemption of job array task that makes afterok dependency
fail. Additionally, send emails when requeueing happens due to preemption.
-- Fix sending requeue mail type.
-- Properly resize a job's GRES bitmaps and counts when resizing the job.
-- Fix node being able to transition to CLOUD state from non-cloud state.
-- Fix regression introduced in 21.08.0rc1 which broke a step's ability to
inherit GRES from the job when the step didn't request GRES but the job did.
-- Fix errors in logic when picking nodes based on bracketed anded constraints.
This also enforces the requirement to have a count when using such
constraints.
-- Handle job resize better in the database.
-- Exclude currently running, resized jobs from the runaway jobs list.
-- Make it possible to shrink a job more than once.
