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changelog.md

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Changelog

All notable changes to this project will be documented in this file.
The format is based on Keep a Changelog.

Batsim adheres to Semantic Versioning from version 1.0.0.
Batsim's public API includes:

  • The Batsim's command-line interface.
  • The Batsim input files format.
  • The communication protocol with the decision-making component.

Unreleased

Added

  • Added the --simgrid-version command-line option to show which SimGrid is used by Batsim.

1.4.0 - 2017-10-07

Added

  • New SUBMIT_PROFILE protocol message that allows the decision process to submit profiles dynamically.
  • New msg_par_hg_tot profile type.
    This is an homogeneous parallel task whose computation and communications amounts are spread over all allocated nodes.
    They can be seen as optimistic moldable tasks.

1.3.0 - 2017-09-30

Added

  • Jobs walltimes are no longer mandatory.
    The walltime field of jobs can now be omitted or set to -1.
    Such jobs will never be killed automatically by Batsim.

1.2.0 - 2017-09-23

Added

  • The job progress is now sent through the protocol when jobs are killed on request.
    This is done via a new job_progress map in JOB_KILLED messages, which gives this information for all the jobs that have really been killed.
  • New job state COMPLETED_WALLTIME_REACHED (separated from COMPLETED_FAILED).

1.1.0 - 2017-09-09

Added

  • New job profiles SCHEDULER_SEND and SCHEDULER_RECV that communicate with the scheduler.
    New send and recv protocol messages that correspond to them.
  • Jobs now have a return code.
    Can be specified in the ret field of the jobs in their JSON description.
    Default value is 0 (success).
  • New job state: COMPLETED_FAILED.
  • New data in existing protocol messages:
    • JOB_COMPLETED:
      • return_code indicates whether the job has succeeded
      • The FAILED status can now be received.

Changed

  • The repeat value of sequence (composed) profiles is now optional.
    Default value is 1 (executed once, no repeat).

1.0.0 - 2017-09-09

SimGrid version to use:

  • Commit 587483ebe on https://github.com/mpoquet/simgrid.git.
    Please notice that energy consumption of parallel tasks does not work as expected.

Added

  • Stated LGPL-3.0 license.
  • Code cosmetics standards are now checked by Codacy.
  • New PFS host. Associated with a new hpst-host command-line option.
  • New protocol messages:
    • The CHANGE_JOB_STATE allows the scheduler to change the state of jobs in Batsim in-memory data structures.
    • The submission_finished notification can be cancelled with a continue_submission notification.
  • New data in existing protocol messages:
    • SIMULATION_BEGINS:
      • allow_time_sharing boolean is now forwarded.
      • resources_data gives information on the resources.
      • hpst_host and ``lcst_host give information about the parallel file system.
    • JOB_COMPLETED:
      • job_state contains the job state (as stored by Batsim).
      • kill_reason contains why the job has been killed (if relevant).
  • New tests:
    • demo corresponds to the documented demonstration.
    • energy_minimal and energy_small test the energy plugin in detail.
    • kill_multiple checks that Batsim can handle multiple kills concerning the same jobs.
    • fewer_resources checks that complex job mapping work
    • reject tests whether rejection works

Modified

  • Improved and renamed parallel file system profiles.
  • Improved code documentation.
  • Improved the python scripts of the tools/ directory.
  • Improved the python scripts of the test/ directory.

Fixed

  • Complex allocation mapping were not handled correctly

0.99 - 2017-05-26

Changed

  • The protocol is based on ZeroMQ instead of Unix Domain Sockets.
  • The protocol messages are now JSON-formatted