Status: alpha-dev4

Released date: Mar 9th 2020

OAR 3 a new version with better code architecture and new internal structure for scheduling.

Main changes and features

  • Same design architecture as OAR2 (based on high level components)
  • Low source line number of code, under 30K (core under 20kloc)
  • New more scalable scheduler (based on new data structures)
  • Python 3.7
  • Better development tools
  • Unit test


  • Alpha version (3.0.0dev4): Mar 9th 2020
  • Pre-Alpha version (3.0.0dev3): Nov 12th 2018
    • Version to evaluate robustness of core functions
    • UI needs some cleaning
  • Beta version: 2Q21 (current target)
  • Production version (3.0.x): 2021

Note: Delays in previous roadmap are due to works around Batsim a simulator of infrastructures.

Test Alpha Version

Test Alpha version uses Oardocker

  • Install oardocker
 pip install oar-docker
  • Second create Debian 10 based images and install 3.0.0.dev4 version oar.
 mkdir oar3 && cd oar3
 oardocker init -e buster build
 git clone --depth 1 --branch 3.0.0.dev4 https://github.com/oar-team/oar3.git
 oardocker install ./oar3
  • Third launch containers, connect and submit an interactive job
 oardocker start -n 3
 oardocker connect frontend
 oarsub -I

For developer

Only for development and the use of Sqlite by default (no need of PostgreSQL), you can follow the following steps:

  • Clone the master repository
git clone https://github.com/oar-team/oar3.git
  • Prepare python environment based on 3.7 version and activate it
virtualenv -p python3.7 env3.7
source env3.7/bin/activate
  • Install all dependencies
cd oar3 
pip install -e '.[dev]'
  • Launch tests with coverage, html result is located at oar3/htmlcov/index.html
pytest --cov-report=html --cov-report term --cov=oar

Pre-alpha version

  • All core features are written
  • Scheduling part ready at 90% (fully operational)
  • Need OAR2 installation procedure to function
  • Incomplete CLI, few options available
  • Not all design/architecture choices are fixed
  • Nodes energy saving unfinished
  • Pingchecker unavailable
  • SendMail to user unavailable
  • Test coverage 70%-80%

Alpha version

  • Standalone procedure installation
  • Complete CLI commands
  • Test coverage 80%-90%

Beta version

  • Version usable by our early adopters
  • Pre-production version
  • Documentation
  • Test coverage >90%
oar_3.txt · Last modified: 2021/01/14 12:22 by auguste
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