diff --git a/RELEASE_NOTES b/RELEASE_NOTES index e3b06a02703f3e92447077b46ea26cd6a33986d8..f43085a9f0035c3d34791643b2d8956585d70f1a 100644 --- a/RELEASE_NOTES +++ b/RELEASE_NOTES @@ -1,5 +1,5 @@ RELEASE NOTES FOR SLURM VERSION 2.1 -1 June 2009 (after SLURM 2.1.0-pre1) +14 October 2009 (through SLURM 2.1.0-pre4) IMPORTANT NOTE: @@ -24,25 +24,90 @@ doc/html/configurator.html that comes with the distribution. HIGHLIGHTS -* Support has been added for Solaris. +* The sched/gang plugin has been removed. The logic is now directly within the + slurmctld daemon so that gang scheduling and/or job preemption can be + performed with a backfill scheduler. +* Preempted jobs can now be canceled, checkpointed or requeued rather than + only suspended. +* Support for QOS (Quality Of Service) has been added to the accounting + database with configurable limits, priority and preemption rules. +* Added -"-signal=<int>@<time>" option to salloc, sbatch and srun commands to + notify programs before reaching the end of their time limit. +* Added squeue option "--start" to report expected start time of pending jobs. +* The pam_slurm Pluggable Authentication Module for SLURM previously + distributed separately has been moved within the main SLURM distribution + and is packaged as a separate RPM. +* Support has been added for OpenSolaris. CONFIGURATION FILE CHANGES (see "man slurm.conf" for details) +* Added PreemptType parameter to specify the plugin used to identify + preemptable jobs (partition priority or quality of service) and + PreemptionMode to identify how to preempt jobs (requeue, cancel, checkpoint, + or suspend). +* The sched/gang plugin has be removed, use PreemptType=preempt/partition_prio + and PreemptMode=suspend,gang. +* ControlMachine changed to accept multiple comma-separated hostnames for + support of some high-availability architectures. +* Added MaxTasksPerNode to control how many tasks that the slurmd can launch. +* Removed SrunIOTimeout parameter. +* Added SchedulerParameters option of "max_job_bf=#" to control how far down + the queue of pending jobs that SLURM searches in an attempt backfill + schedule them. The default value is 50 jobs. COMMAND CHANGES (see man pages for details) +* Added a --detail option to "scontrol show job" to display the cpu/memory + allocation informaton on a node-by-node basis. +* sacctmgr show problems command added to display problems in the accounting + database (e.g. accounts with no users, users with no UID, etc.) * Several redundant squeue output and sorting options have been removed: "%o" (use %D"), "%b" (use "%S"), "%X", %Y, and "%Z" (use "%z"). * Standardized on the use of the '-Q' flag for all commands that offer the --quiet option. +* salloc's --wait=<secs> option deprecated by --immediate=<secs> option to + match the srun command. +* Scalability of sview dramatically improved. +* Added reservation flag of "OVERLAP" to permit a new reservation to use + nodes already in another reservation. +* Added sacct ability to use --format NAME%LENGTH similar to sacctmgr. +* For salloc, sbatch and srun commands, ignore _maximum_ values for + --sockets-per-node, --cores-per-socket and --threads-per-core options. + Remove --mincores, --minsockets, --minthreads options (map them to + minimum values of -sockets-per-node, --cores-per-socket and + --threads-per-core for now). +* Change scontrol show job info: ReqProcs (number of processors requested) + is replaced by NumProcs (number of processors requested or actually + allocated) and ReqNodes (number of nodes requested) is replaced by NumNodes + (number of nodes requested or actually allocated). + + +BLUEGENE SPECIFIC CHANGES +* scontrol show blocks option added. +* scontrol delete block and update block can now remove blocks on dynamic + layout configuration. +* sinfo and sview now display correct CPU counts for partitions. +* Jobs waiting for a block to boot will now be reported in Configuring state. +* Vastly improve dynamic layout mode algorithm. +* Environment variables such as SLURM_NNODES, SLURM_JOB_NUM_NODES and + SLURM_JOB_CPUS_PER_NODE now reference cnode counts instead of midplane + counts. SLURM_NODELIST still references midplane names. + OTHER CHANGES -* A mechanism has beeded added for SPANK plugins to set environment variables +* A mechanism has been added for SPANK plugins to set environment variables for Prolog, Epilog, PrologSLurmctld and EpilogSlurmctld programs using the functions spank_get_job_env, spank_set_job_env, and spank_unset_job_env. See "man spank" for more information. +* Set a node's power_up/configuring state flag while PrologSlurmctld is + running for a job allocated to that node. +* Added sched/wiki2 (Moab) JOBMODIFY command support for VARIABLELIST option + to set supplemental environment variables for pending batch jobs. * The RPM previously named "slurm-aix-federation-<version>.rpm" has been renamed to just "slurm-aix-<version>.rpm" (the federation switch plugin may not be present). -* Added sched/wiki2 (Moab) JOBMODIFY command support for VARIABLELIST option - to set supplemental environment variables for pending batch jobs. +* Environment variables SLURM_TOPOLOGY_ADDR and SLURM_TOPOLOGY_ADDR_PATTERN + added to describe the network topology for each launched task when + TopologyType=topology/tree is configured +* Add new job wait reason, ReqNodeNotAvail: Required node is not available + (down or drained).