from Bjørn-Helge Mevik

Here is the way to reproduce it :
[root@cuzco27 georgioy]# salloc -n64 -N4 --exclusive
salloc: Granted job allocation 8
[root@cuzco27 georgioy]#srun -r 0 -n 30 -N 2 sleep 300&
[root@cuzco27 georgioy]#srun -r 1 -n 40 -N 3 sleep 300&
[root@cuzco27 georgioy]# srun: error: slurm_receive_msg: Zero Bytes were transmitted or received
srun: error: Unable to create job step: Zero Bytes were transmitted or received

honored correctly.  I also put in nice notes where the values aren't
to be altered.

* Specify MinNodes via "scontrol update partition".
* Whenever the zero-node allocation ends, the frontend node is left in a state of COMPLETING until scontrol reconfigure is issued (this doesn't appear to impact the performance of the front end node as other jobs can still be submitted including other zero-node jobs).

system of different size than actual hardware.

handled.

cpus in task/cgroup plugin

Cray - Add support for zero compute note resource allocation to run batch
script on front-end node with no ALPS reservation. Useful for pre- or post-
processing. NOTE: The partition must be configured with MinNodes=0.

batch jobs.

Before it could break before which could mess things up on a Q.

SELECT_NAV

respected block allocators.  This also catches the conn-types like
T,T,N,N on a Q system where before those didn't work correctly.

just return a bad result instead of talk to the database.

clause

Sinfo output format of "%P" now prints "*" after default partition even if
no field width is specified (previously included "*" only if no field width
was specified. Added output format of "%R" to print partition name only
without identifying the default partition with "*").

fatal when no from the controller.

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There is a minor problem with the display of partition names in
"sinfo".  Without options, the partition name field displays a
asterisk "*" at the end of the name of the Default partition.  If you
specify a formatting option which contains the %P field specifier with
a width option (e.g., sinfo -o %8P) the asterisk also is appended to
the default partition name.  With no width option, the "%P" displays
the name based on the full length of the name string, however, no "*"
is appended on the default partition name.

The attached patch for version 2.4.0-pre4 corrects the problem so that
the "*" is correctly appended when %P with no width specifier is
used. The patch will also apply to version 2.3.4.

  -Don Albert-