NEWS

This file describes changes in recent versions of SLURM. It primarily
documents those changes that are of interest to users and admins.

* Changes in SLURM 1.2.0-pre6
=============================
 -- Maintain actually job step run time with suspend/resume use.

* Changes in SLURM 1.2.0-pre5
=============================
 -- Patch from HP patch.1.2.0.pre4.061017.crcore_hints, supports cores as 
    consumable resource.

* Changes in SLURM 1.2.0-pre4
=============================
 -- Added node_inx to job_step_info_t to get the node indecies for mapping out
    steps in a job by nodes.
 -- sview grid added
 -- BLUEGENE node_inx added to blocks for reference.
 -- Automatic CPU_MASK generation for task launch, new srun option -B.
 -- Automatic logical to physical processor identification and mapping.
 -- Added new srun options to --cpu_bind: sockets, cores, and threads
 -- Updated select/cons_res to operate as socket granularity.
 -- New srun task distribution options to -m: plane
 -- Multi-core support in sinfo, squeue, and scontrol.
 -- Memory can be treated as a consumable resource.
 -- New srun options --ntasks-per-[node|socket|core].

* Changes in SLURM 1.2.0-pre3
=============================
 -- Remove configuration parameter ShedulerAuth (defunct).
 -- Add NextJobId to "scontrol show config" output.
 -- Add new slurm.conf parameter MailProg.
 -- New forwarding logic.  New recieve_msg functions depending on what you
    are expecting to get back.  No srun_node_id anymore passed around in
    a slurm_msg_t
 -- Remove sched/wiki plugin (use sched/wiki2 for now)
 -- Disable pthread_create() for PMI_send when TotalView is running for 
    better performance.
 -- Fixed certain tests in test suite to not run with bluegene or front-end 
    systems
 -- Removed addresses from slurm_step_layout_t
 -- Added new job field, "comment". Set by srun, salloc and sbatch. See 
    with "scontrol show job". Used in sched/wiki2.
 -- Report a job's exit status in "scontrol show job".
 -- In sched/wiki2: add support for JOBREQUEUE command.
 
* Changes in SLURM 1.2.0-pre2
=============================
 -- Added function slurm_init_slurm_msg to be used to init any slurm_msg_t
    you no longer need do any other type of initialization to the type.

* Changes in SLURM 1.2.0-pre2
=============================
 -- Fixed task dist to work with hostfile and warn about asking for more tasks 
    than you have nodes for in arbitray mode.
 -- Added "account" field to job and step accounting information and sacct output.
 -- Moved task layout to slurmctld instead of srun.  Job step create returns
    step_layout structure with hostnames and addresses that corrisponds 
    to those nodes. 
 -- Changed api slurm_lookup_allocation params, 
    resource_allocation_response_msg_t changed to job_alloc_info_response_msg_t
    this structure is being renamed so contents are the same.
 -- alter resource_allocation_response_msg_t see slurm.h.in
 -- remove old_job_alloc_msg_t and function slurm_confirm_alloc	
 -- Slurm configuration files now support an "Include" directive to
    include other files inline.
 -- BLUEGENE New --enable-bluegene-emulation configure parameter to allow 
    running system in bluegene emulation mode.  Only
    really useful for developers.
 -- New added new tool sview GUI for displaying slurm info.
 -- fixed bug in step layout to lay out tasks correctly

* Changes in SLURM 1.2.0-pre1
=============================
 -- Fix bug that could run a job's prolog more than once
 -- Permit batch jobs to be requeued, scontrol requeue <jobid>
 -- Send overcommit flag from srun in RPCs and have slurmd set SLURM_OVERCOMMIT
    flag at batch job launch time.
 -- Added new configuration parameter MessageTimeout (replaces #define in 
    the code)
 -- Added support for OSX build.

* Changes in SLURM 1.1.16
=========================
 - BLUEGENE - fix to make prolog run 5 minutes longer to make sure we have
   enough time to free the overlapping blocks when starting a new job on a 
   block.
 - BLUEGENE - edit to the libsched_if.so to read env and look at 
   MPIRUN_PARTITION to see if we are in slurm or running mpirun natively.
 - Plugins are now dlopened RTLD_LAZY instead of RTLD_NOW.

* Changes in SLURM 1.1.15
=========================
 - BLUEGENE - fix to be able to create static partitions
 - Fixed fanout timeout logic.
 - Fix for slurmctld timeout on outgoing message (Hongjia Cao, NUDT.edu.cn).

* Changes in SLURM 1.1.14
=========================
 - In sched/wiki2: report job/node id and state only if no changes since 
   time specified in request.
 - In sched/wiki2: include a job's exit code in job state information.
 - In sched/wiki2: add event notification logic on job submit and completion.
 - In sched/wiki2: add support for JOBWILLRUN command type.
 - In sched/wiki2: for job info, include required HOSTLIST if applicable.
 - In sched/wiki2: for job info, replace PARTITIONMASK with RCLASS (report
   partition name associated with a job, but no task count)
 - In sched/wiki2: for job and node info, report all data if TS==0, 
   volitile data if TS<=update_time, state only if TS>update_time
 - In sched/wiki2: add support for CMD=JOBSIGNAL ARG=jobid SIGNAL=name or #
 - In sched/wiki2: add support for CMD=JOBMODIFY ARG=jobid [BANK=name]
   [TIMELIMIT=minutes] [PARTITION=name]
 - In sched/wiki2: add support for CMD=INITIALIZE ARG=[USEHOSTEXP=T|F]
   [EPORT=#]; RESPONSE=EPORT=# USEHOSTEXP=T
 - In sched/wiki2: fix memory leak.
 - Fix sinfo node state filtering when asking for idle nodes that are also 
   draining. 
 - Add Fortran extension to slurm_get_rem_time() API.
 - Fix bug when changing the time limit of a running job that has previously 
   been suspended (formerly failed to account for suspend time in setting 
   termination time).
 - fix for step allocation to be able to specify only a few nodes in a 
   step and ask for more that specified.
 - patch from Hongjia Cao for forwarding logic
 - BLUEGENE - able to allocate specific nodes without locking up.
 - BLUEGENE - better tracking of blocks that are created dynamically, 
   less hitting the db2.

* Changes in SLURM 1.1.13
=========================
 - Fix hang in sched/wiki2 if Moab stops responding responding when 
   response is outgoing. 
 - BLUEGENE - fix to make sure the block is good to go when picking it
 - BLUEGENE - add libsched_if.so so mpirun doesn't try to create a block
   by itself.
 - Enable specification of srun --jobid=# option with --batch (for user root).
 - Verify that job actually starts when requested by sched/wiki2.
 - Add new wiki.conf parameters: EPort and JobAggregationTime for event 
   notification logic (see wiki.conf man page for details)

* Changes in SLURM 1.1.12
=========================
 - Sched/wiki2 to report a job's account as COMMENT response to GETJOBS
    request.
 - Add srun option "--comment" (maps to job account until slurm v1.2, 
   needed for Moab scheduler functionality).
 - fixed some timeout issues in the controller hopefully stopping all the 
   issues with excessive timeouts.
 - unit conversion (i.e. 1024 => 1k) only happens on bgl systems for node 
   count.
 - Sched/wiki2 to report a job's COMPETETIME and SUSPENDTIME in GETJOBS 
   response.
 - Added support for Mellanox's version of mvapich-0.9.7.

* Changes in SLURM 1.1.11
=========================
 - Update file headers adding permission to link with OpenSSL.
 - Enable sched/wiki2 message authentication.
 - Fix libpmi compilation issue.
 - Remove "gcc-c++ python" from slurm.spec BuildRequires.  It breaks
   the AIX build, so we'll have to find another way to deal with that.

* Changes in SLURM 1.1.10
=========================
 -- task distribution fix for steps that are smaller than job allocation.
 -- BLUEGENE - fix to only send a success when block was created when trying
    to allocate the block.
 -- fix so if slurm_send_recv_node_msg fails on the send the auth_cred returned
    by the resp is NULL.
 -- Fix switch/federation plugin so backup controller can assume control 
    repeatedly without leaking or corrupting memory.
 -- Add new error code (for Maui/Moab scheduler): ESLURM_JOB_HELD
 -- Tweak slurmctld's node ping logic to better handle failed nodes with 
    hierarchical communications fail-over logic.
 -- Add support for sched/wiki specific configuration file "wiki.conf".
 -- Added sched/wiki2 plugin (new experimental wiki plugin).
 
* Changes in SLURM 1.1.9
========================
 -- BLUEGENE - fix to handle a NO_VAL sent in as num procs in the job 
    description.
 -- Fix bug in slurmstepd code for parsing --multi-prog command script.
    Parser was failing for commands with no arguments.
 -- Fix bug to check unsigned ints correctly in bitstring.c
 -- Alter node count covert to kilo to only convert number divisible by 
    1024 or 512

* Changes in SLURM 1.1.8
========================
 -- Added bug fixes (fault-tolerance and memory leaks) from Hongjia Cao 
    <hjcao@nudt.edu.cn>
 -- Gixed some potential BLUEGENE issues with the bridge log file not having
    a mutex around the fclose and fopen.
 -- BLUEGENE - srun -n procs now regristers correctly
 -- Fixed problem with reattach double allocating step_layout->tids
 -- BLUEGENE - fix race condition where job is finished before it starts.

* Changes in SLURM 1.1.7
========================
 -- BLUEGENE - fixed issue with doing an allocation for nodes since asking