NEWS.md

flux-sched version 0.6.0 - 2018-08-03

Fixes

• sched: fix request handler type mismatch on i386 (#346)
• sched: Fix a job resrc_tree memory leak (#365)
• sched: Print error messages when schedule_job cannot run (#348)
• simulator: track a flux-core API change (#351)

Features

• resource: Introduce planner_multi_t (#349)
• Add hwloc-based GPU scheduling support (#354)
• add sched parameter get & set commands to wreck (#362)
• rdl: Lua 5.2 compatibility (#373)

Cleanup

• travis: change email notifications to go to the flux-sched-dev listserv (#353)

flux-sched version 0.5.0 - 2018-05-11

Fixes

• c++ configuration changes to mirror flux-core (#270)
• track upstream changes in flux-core APIs (#271, #272, #278)
• portability fixes for Ubuntu 16.04 and 17.10 (#298, #301)
• fixes for hwloc input xml (#310)

Features

• add pending job cancellation support (#291)
• add support for excluding resources for specific nodes (#305)
• support for GPU scheduling (#313)
• add new, more scalable resource assignment schema in kvs (R_lite) (#321)
• include host names in R_lite resource assignment data (#324)
• optimize queue-depth=1 FCFS (#294)
• support for enhanced wreck submitted state event (#295)
• support for new completing state for wreck jobs (#341)
• add planner and resource-query utility support (#283, #323, #325, #274, #281)
• initial priority plugin development (#290)

Cleanup

• testsuite enhancements (#316, #328, #331)
• drop old rank.N method for resource assignment (#339)

flux-sched version 0.4.0 - 2017-08-24

Fixes

• Fix allocation of cores unevenly across nodes (#226)
• Fixes and updates to track latest libflux-core API changes (#255, #253, #246, #238, #234)
• simulator: fix and re-enable sim integration tests (#250)
• Fix autoreconf when using side-installed autotools (#243)
• flux-waitjob: fixes to avoid flux-core issue #1027 (#244)
• Other fixes (#227, #231)

New features

• simulator: add ISO time parsing to job traces (#260)
• resrc: add resource API context support (#236)

Cleanup

• simulator: refactor, cleanup, and ensure proper initialization. (#240, #250)

flux-sched version 0.3.0 - 2016-10-28

New features

• Support resource membership in multiple hierarchies and include "flow graphs" for modeling flow resources such as power and bandwidh. Enhance find/select of resources to support consideration of power, bandwidth, etc. (#189)

• Add configurable scheduling optimizations for throughput-oriented workloads (#190, #191):

  • sched-params=queue-depth=<k>: limits the number of jobs to consider per scheduling loop
  • sched-params=delay-scheduling=true: delays scheduling to batch up individual scheduling events

Fixes

• Updates to track changes in flux-core (#188, #207, #212, #216)

Misc

• Update JSON handling to libjansson (#215, #220)

• Simulator updates and cleanup (#203, 218, #219)

• RDL enhancements for multi-hierarchy support (#196)

• Do not assume kvs path to jobid is in lwj.jobid (#216)

flux-sched version 0.2.0 - 2016-08-13

New Features

• Versatile scheduling: replace resource tree list searches with tree searches.

• Runtime selection of backfill algorithm (#159). Examples of selecting various algorithms are (first remove any loaded sched plugin, e.g., flux module remove sched.fcfs):

• Conservative : flux module load sched.backfill reserve-depth=-1
• EASY : flux module load sched.backfill reserve-depth=1
• Hybrid : flux module load sched.backfill reserve-depth=4
• Pure : flux module load sched.backfill reserve-depth=0

Fixes

• Update to latest flux-core logging apis

• Fix segfaults in simulator during shutdown

• Small leak fixes in simulator

Deprecations

• Remove sim_sched code that ran under simulator. The simulator now interfaces directly with sched module.

flux-sched version 0.1.0 - 2016-05-16

• Initial release for build testing only