Add contribs/arrayrun tool providing support for job arrays. Contributed by
Bjørn-Helge Mevik, University of Oslo. NOTE: Not currently packaged as RPM
and manual file editing is required.

If a job needed to preempt other jobs to start and those jobs were
not completed by the time of the next scheduling cycle, other jobs
might be selected for preemption in that next cycle resulting in
more jobs being preempted than necessary.

Previous logic reported the run time as the current time minus the job start time,
ignoring any suspended time.

Enhancements to sched/backfill performance with select/cons_res plugin.
Major improvements would be seen with large job counts. Based upon
bf_build_row_bitmaps_2.2.6.patch patch from Bjørn-Helge Mevik, University of Oslo.

association limit.

Add default and maximum memory limits on a per-partitiion basis. If not
specified, the system-wide memory limits will apply.

Add select_jobinfo to the task launch RPC so that all nodes have access to
the information and not job the head node.  Based upon patch by Andriy
Grytsenko (Massive Solutions Limited).

Fix possible invalid memory reference in sched/backfill. Patch by Andriy
Grytsenko (Massive Solutions Limited).

Add flag to the select APIs for job suspend/resume indicating if the action
is for gang scheduling or an explicit job suspend/resume by the user. Only
an explicit job suspend/resume will reset the job's priority and make
resources exclusively held by the job available to other jobs. This change
is also needed for Cray systems with ALPS.

Add squeue support to display a job's license information. Patch by Andy
Roosen (University of Deleware).

For front-end architectures on which job steps are run (emulated Cray and
BlueGene systems only), fix bug that would free memory still in use.

Processes suspended and resumed are determined by using process group ID
and parent process ID, so some processes may be missed. Since salloc runs
as a normal user, it's ability to identify processes associated with a job
is limited.

Improve efficiency of select/linear plugin with topology/tree plugin
configured, Patch by Andriy Grytsenko (Massive Solutions Limited).

Modify smap and sview to display all nodes even if multiple
nodes exist at each coordinate.

Cray systems: Add support to suspend/resume salloc command to insure that
aprun does not get initiated when the job is suspended.

With regard to forthcoming Accelerator support in Basil 1.2/Alps 4.0, this adds
interface support for passing the following Accelerator parameters:
 * accelerator type (currently only "GPU" is supported),
 * model/rank information (uninterpreted "family" string),
 * amount of on-board memory in MB.
02_Cray-Accelerator-params.diff
Patch from Gerrit Renker and Stephen Trofinoff, CSCS.

This adds support to parse Basil 1.2/Alps 4.0 per-node accelerator information.
01_Cray-Accelerator-basic-support.diff
Patch from Gerrit Renker and Stephen Trofinoff, CSCS

NOTE: THERE HAS BEEN A NEW FIELD ADDED TO THE CONFIGURATION RESPONSE RPC
    AS SHOWN BY "SCONTROL SHOW CONFIG". THIS FUNCTION WILL ONLY WORK WHEN THE
    SERVER AND CLIENT ARE BOTH RUNNING SLURM VERSION 2.3.0.pre6

Fix bug in layout of job step with --nodelist option plus node count. Old
code could allocate too few nodes by double counting some nodes.

The original logic had a problem if you shrank a job and later grew it.
Nodes previously released would reappear when the job grows, but have
zero CPUs associated with them. The problem was due to the original nodes
list of a job being preserved in the job_resources data structure. The
new logic confirms that those nodes are still in the job's allocation
before rebuilding the job_resources data structure.

UMBC.

Prevent background salloc disconnecting terminal at termination. Patch by Don Albert, Bull.

More than one TaskPlugin can be configured in a comma separated list.
Patch from Andriy Grytsenko (Massive Solutions Limited).

Fix error handling bug in mpi/mvapich plugin that could result in srun going into an infinite loop.

Avoid clearing a node's Arch, OS, BootTime and SlurmdStartTime when
    "scontrol reconfig" is run. Patch from Martin Perry, Bull.

Added scontrol ability to increment or decrement a job or step time limit.

would not be set correctly in the added child association.

With default configuration on non-Cray systems, enable salloc to be
spawned as a background process. Based upon work by Don Albert (Bull) and
Gerrit Renker (CSCS).

Add support to salloc for a new environment variable SALLOC_KILL_CMD,
which is equivalent to the -K/--kill-command option.

This fixes a bug which is thanks to a report by Don Albert.

The problem is that whenever salloc exits with a child process in stopped state
(suspended or stopped on terminal input/output), a zombie process is generated,
since this case is not caught by the code evaluating the child status.

This patch adds the missing case.  It uses SIGKILL, which is the only signal
that changes the state of a stopped process. It was decided not to try and
re-awken the process using SIGCONT, since (a) this happens during session
clean-up and (b) if the condition is due to SIGTTIN, the process immediately
becomes stopped again.
Patch from Gerrit Renker, CSCS.

Treat the specification of multiple cluster names as a fatal error.

Note that scontrol can only support a single cluster at one time.

Add -R/--reservation option to squeue command as a job filter.

Improve accuracy of REQUEST_JOB_WILL_RUN start time with respect to higher
priority pending jobs.