we have hit the following problem that seems to be present in Slurm
slurm-14-11-2-1 and previous versions. When a node is reserved and an
overlapping maint reservation is created and later deleted the scontrol
output will report the node as IDLE rather than RESERVED:

+ scontrol show node node1
+ grep State
   State=IDLE ThreadsPerCore=1 TmpDisk=0 Weight=1
+ scontrol create reservation starttime=now duration=120 user=usr01000
nodes=node1 ReservationName=X
Reservation created: X
+ sleep 10
+ scontrol show nodes node1
+ grep State
   State=RESERVED ThreadsPerCore=1 TmpDisk=0 Weight=1
+ scontrol create reservation starttime=now duration=120 user=usr01000
nodes=ALL flags=maint,ignore_jobs ReservationName=Y
Reservation created: Y
+ sleep 10
+ grep State
+ scontrol show nodes node1
   State=MAINT ThreadsPerCore=1 TmpDisk=0 Weight=1
+ scontrol delete ReservationName=Y
+ sleep 10
+ scontrol show nodes node1
+ grep State
*   State=IDLE ThreadsPerCore=1 TmpDisk=0 Weight=1*
+ scontrol delete ReservationName=X
+ sleep 10
+ scontrol show nodes node1
+ grep State
   State=IDLE ThreadsPerCore=1 TmpDisk=0 Weight=1

Note that the after the deletion of reservation "X" the State=IDLE
instead of State=RESERVED. I think that the delete_resv() function in
slurmctld/reservation.c should call set_node_maint_mode(true) like
update_resv() does. With the patch pasted at the end of this e-mail I
get the following output which matches my expectation:

+ scontrol show node node1
+ grep State
   State=IDLE ThreadsPerCore=1 TmpDisk=0 Weight=1
+ scontrol create reservation starttime=now duration=120 user=usr01000
nodes=node1 ReservationName=X
Reservation created: X
+ sleep 10
+ scontrol show nodes node1
+ grep State
   State=RESERVED ThreadsPerCore=1 TmpDisk=0 Weight=1
+ scontrol create reservation starttime=now duration=120 user=usr01000
nodes=ALL flags=maint,ignore_jobs ReservationName=Y
Reservation created: Y
+ sleep 10
+ scontrol show nodes node1
+ grep State
   State=MAINT ThreadsPerCore=1 TmpDisk=0 Weight=1
+ scontrol delete ReservationName=Y
+ sleep 10
+ scontrol show nodes node1
+ grep State
*   State=RESERVED ThreadsPerCore=1 TmpDisk=0 Weight=1*
+ scontrol delete ReservationName=X
+ sleep 10
+ scontrol show nodes node1
+ grep State
   State=IDLE ThreadsPerCore=1 TmpDisk=0 Weight=1

Thanks,
Dorian

Correct parsing of AccountingStoragePass when specified in old format
(just a path name)

Bug 1331

Intel MPI, on MPI jobs initialisation through PMI, uses to call PMI_KVS_Put()
many many times from task at rank 0, and each on these call is followed by
PMI_KVS_Commit(). Slurm implementation of PMI_KVS_Commit() imposes a delay
to avoid DDOS on original srun. This delay is proportional to the total number.
It could be up to 3 secs for large jobs for ex. with 7168 tasks. Therefore,
when Intel MPI calls PMI_KVS_Commit() 475 times (mesured on a test case) from
task at rank 0, 28 minutes are spent in delay function.
All other tasks in the job are waiting for a PMI_Barrier. Therefore, there is
no risk for a DDOS from this single task 0. The patch alters the delaying time
calculation to make sure task at rank 0 will does not be delayed. All other
tasks are globally spreaded in the same time range as before.

    of Slurm daemons.

The slurmstepd still needs to be fixed, which most likely can't be fixed
until 15.08.

of Slurm daemons.

but then sets CPUs to only represent the number of cores on the node.

Bug 1327

doesn't request a number of tasks.

Fix job array hash table bug, could result in slurmctld infinite loop or
invalid memory reference.
bug 1309

as it may cause core dumo in squeue.

This reverts commit 322c783c.

If a master job array record is complete, then consider all pending
tasks as also complete. This problem happens when a master job array
record is pending (has pending tasks) and is cancelled. The result
previously was a job record not visible to squeue/scontrol, but occupying
memory.
The same type of problem happened with respect to a dependency on a job
array which was cancelled.

This change will better reveal any vestigial job records not being purged

Conflicts:
	META

Done in response to bug 1323

other config files like bluegene.conf and such.

If a QOS was added for the job and then removed and it just happened
to be the largest QOS id wise if the slurmctld was restarted and the job
wasn't flushed out yet it could mess things up.

Conflicts:
	src/plugins/task/cray/task_cray.c

slurmdb_purge_string(), there is no reason to check for this specific
value anymore in read_config().

and initialize kvs_seq on mpi/pmi2 setup to support launching.

it also need client side.