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 1.1.0-pre9
=============================
 -- Fix bug that could temporariy make nodes DOWN when they are really 
    responding. 
 -- Fix bug preventing backup slurmctld from responding to PING RPCs.
 -- Set "CFLAGS=-DISO8601" before configuration to get ISO8601 format 
    times for all SLURM commands. NOTE: This may break Moab, Maui, and/or 
    LSF schedulers.

* Changes in SLURM 1.1.0-pre8
=============================
 -- Fix bug in enforcement of partition's MaxNodes limit.
 -- BLUEGENE - added support for srun -w option also fixed the geometry option
    for srun.

* Changes in SLURM 1.1.0-pre7
=============================
 -- Accounting works for aix systems, use jobacct/aix
 -- Support large (over 2GB) files on 32-bit linux systems
 -- changed all writes to safe_write in srun
 -- added $float to globals.example in the testsuite
 -- Set job's num_proc correctly for jobs that do not have exclusive use 
    of it's allocated nodes.
 -- Change in support for test suite: 'testsuite/expect/globals.example'
    is now 'testsuite/expect/globals' and you can override variable 
    settings with a new file 'testsuite/expect/globals.local'.
 -- Job suspend now sends SIGTSTP, sleep(1), sends SIGSTOP for better
    MPI support.
 -- Plug a bunch of memory leaks in various places.
 -- Bluegene - before assigning a job to a block the plugin will check the bps
    to make sure they aren't in error state.
 -- Change time format in job completion logging (JobCompType=jobcomp/filetxt)
    from "MM/DD HH:MM:SS" to "YYYY-MM-DDTHH:MM:SS", conforming with the ISO8601 
    standard format.
 
* Changes in SLURM 1.1.0-pre6
=============================
 -- Added logic to "stat" a running job with sacct option -S use -j to specify
    job.step 
 -- removed jobacct/bluegene (no real need for this) meaning, I don't think 
    there is a way to gather the data yet.
 -- Added support for mapping "%h" in configured SlurmdLog to the hostname.
 -- Add PropagatePrioProcess to control propagation of a user's nice value 
    to spawned tasks (based upon work by Daniel Christians, HP).
 
* Changes in SLURM 1.1.0-pre5
=============================
 -- Added step completion RPC logic
 -- Vastly changed sacct and the jobacct plugin.  Read documentation for full
    details.
 -- Added jobacct plugin for AIX and BlueGene, they currently don't work, 
    but infrastructure is in place.
 -- Add support for srun option --ctrl-comm-ifhn to set PMI communications
    address (Hongjia Cao, National University of Defense Technology).
 -- Moved safe_read/write to slurm_protocol_defs.h removing multiple copies.
 -- Remove vestigial functions slurm_allocate_resources_and_run() and 
    slurm_free_resource_allocation_and_run_response_msg().
 -- Added support for different executable files and arguments by task based
    upon a configuration file. See srun's --multi-prog option (based upon 
    work by Hongjia Cao, National University of Defense Technology).
 -- moved the way forward logic waited for fanout logic mostly eliminating 
    problems with scalability issues.
 -- changed -l option in sacct to display different params see sacct/sacct.h
    for details.

* Changes in SLURM 1.1.0-pre4
=============================
 -- Bluegene specific - Added support to set bluegene block state to 
    free/error via scontrol update BlockName 
 -- Add needed symbol to select/bluegene in order to load plugin.

* Changes in SLURM 1.1.0-pre3
=============================
 -- Added framework for XCPU job launch support.
 -- New general configuration file parser and slurm.conf handling code.
    Allows long lines to be continued on the next line by ending with a "\".
    Whitespace is allowed between the key and "=", and between the "=" and
    value.
    WARNING: A NodeName may now occur only once in a slurm.conf file.
             If you want to temporarily make nodes DOWN in the slurm.conf,
             use the new DownNodes keyword (see "man slurm.conf").
 -- Gracefully handle request to submit batch job from within an existing 
    batch job.
 -- Warn user attempting to create a job allocation from within an existing job
    allocation.
 -- Add web page description for proctrack plugin.
 -- Add new function slurm_get_rem_time() for job's time limit.
 -- JobAcct plugin renamed from "log" to "linux" in preparation for support of 
    new system types. 
    WARNING: "JobAcctType=jobacct/log" is no longer supported.
 -- Removed vestigal 'bg' names from bluegene plugin and smap
 -- InactiveLimit parameter is not enforced for RootOnly partitions.
 -- Update select/cons_res web page (Susanne Balle, HP, 
    cons_res_doc_patch_3_29_06).
 -- Build a "slurmd.test" along with slurmd. slurmd.test has the path to 
    slurmstepd set allowing it to run unmodified out of the builddir for 
    testing (Mark Grondona).
 
* Changes in SLURM 1.1.0-pre2
=============================
 -- Added "bcast" command to transmit copies of a file to compute nodes
    with message fanout.
 -- Bluegene specific - Added support for overlapping partitions and 
    dynamic partitioning. 
 -- Bluegene specific - Added support for nodecard sized blocks.
 -- Added logic to accept 1k for 1024 and so on for --nodes option of srun. 
    This logic is through display tools such as smap, sinfo, scontrol, and 
    squeue.
 -- Added bluegene.conf man page.
 -- Added support for memory affinity, see srun --mem_bind option.
 
* Changes in SLURM 1.1.0-pre1
=============================
 -- New --enable-multiple-slurmd configure parameter to allow running
    more than one copy of slurmd on a node at the same time.  Only
    really useful for developers.
 -- New communication is now branched on all processes to slurmd's from 
    slurmctld and srun launch command.  This is done with a tree type 
    algorithm.  Spawn and batch mode work the same as before.  New slurm.conf
    variable TreeWidth=50 is default.  This is the number of threads per 
    stop on the tree.  
 -- Configuration parameter HeartBeatInterval is depracated. Now used half
    of SlurmdTimeout and SlurmctldTimeout for communications to slurmd and
    slurmctld daemons repsectively.
 -- Add hash tables for select/cons_res plugin (Susanne Balle, HP, 
    patch_02222006).
 -- Remove some use of cr_enabled flag in slurmctld job record, use 
    new flag "test_only" in select_g_job_test() instead.

* Changes in SLURM 1.0.13
=========================
 -- Fix for AllowGroups option to work when the /etc/group file doesn't 
    contain all users in group by adding the uids of the names in /etc/passwd
    that have a gid of that which we are looking for.
 -- Fix bug in InactiveLimit support that can potentially purge active jobs.
 
* Changes in SLURM 1.0.12
=========================
 -- Report node state of DRAIN rather than DOWN if DOWN with DRAIN flag set.
 -- Initialize job->mail_type to 0 (NONE) for job submission.
 -- Fix for stalled task stdout/stderr when buffered I/O is used, and
    a single line exceeds 4096 bytes.
 -- Memory leak fixes for maui plugin (hjcao@nudt.edu.cn)
 -- Fix for spinning srun when the terminal to which srun is talking
    goes away.
 -- Don't set avail_node_bitmap for DRAINED nodes on slurmctld reconfig
    (can schedule a job on drained node after reconfig).
 

* Changes in SLURM 1.0.11
=========================
 -- Fix for slurmstepd hang when launching a task. (Needed to install
    list library's atfork handlers).
 -- Fix memory leak on AIX (and possibly other architectures) due to
    missing pthread_attr_destroy() calls.
 -- Fix rare task standard I/O setup bug.  When the bug hit, stdin, stdout,
    or stderr could be an invalid file descriptor.
 -- General slurmstepd file descriptor cleanup.
 -- Fix memory leak in job accounting logic (Andy Riebs, HP, memory_leak.patch).

* Changes in SLURM 1.0.10
=========================
 -- Fix for job accounting logic submitted from Andy Riebs to handle issues
    with suspending jobs and such. patch file named requeue.patch
 -- Make select/cons_res interoperate with mpi/lam plugin for task counts.
 -- Fix race condition where srun could seg-fault due to use of logging functions
    within pthread after calling log_fini.
 -- Code changes for clean build with gcc 2.96 (gcc_2_96.patch, Takao Hatazaki, HP).
 -- Add CacheGroups configuration support in configurator.html (configurator.patch,
    Takao Hatazaki, HP).
 -- Fix bug preventing use of mpich-gm plugin (mpichgm.patch, Takao Hatazaki, HP).

* Changes in SLURM 1.0.9
========================
 -- Fix job accounting logic to open new log file on slurmctld reconfig.
    (Andy Riebs, slurm.hp.logfile.patch).
 -- Fix bug which allows a user to run a batch script on a node not allocated
    by the slurmctld.
 -- Fix poe MP_HOSTFILE handling bug on AIX.

* Changes in SLURM 1.0.8
========================
 -- Fix to communication between slurmd and slurmstepd to allow for partial
    reads and writes on their communication pipes.

* Changes in SLURM 1.0.7
========================
 -- Change in how AuthType=auth/dummy is handled for security testing.
 -- Fix for bluegene systems to allow full system partitions to stay booted 
    when other jobs are submitted to the queue.

* Changes in SLURM 1.0.6
========================
 -- Prevent slurmstepd from crashing when srun attaches to batch job.

* Changes in SLURM 1.0.5
========================