OAR 3

Status: pre-alpha v3 (demo version)

Released date: Mar 29th 2018

OAR 3 is next OAR version. It's a near complete rewritten version of OAR 2.

• 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

• Pre-Alpha version (3.0.0dev3): Nov 12th 2018
  • Version to evaluate robustness of core functions
  • UI needs some cleaning
• Alpha version: 1Q20 (current target)
• Beta version: 2Q20
• Production version (3.0.x): 2020

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

Demo version uses Oardocker

• First we need to use dev branch of oardocker

 git clone https://github.com/oar-team/oar-docker.git
 cd oar-docker
 git checkout dev
 git pull -r
 pip install .

• Second create Debian 9 based images and install 3.0.0.dev3 version oar.

 mkdir oar3-stretch && cd oar3-stretch
 oardocker init -e stretch build
 git clone --depth 1 --branch 3.0.0.dev3 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

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 3.6 version and activate it

 
virtualenv -p python3.6 env3.6
source env3.6/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

• 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%

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

• Version usable by our early adopters
• Pre-production version
• Documentation
• Test coverage >90%