Parts of this documentation are still missing. Feel free to Contact us if you have any question or remark — or if a TODO is important for you. Here are Contributing guidelines.

Batsim is a scientific simulator to analyze batch schedulers. Batch schedulers — or Resource and Jobs Management Systems, RJMSs — are systems that manage resources in large-scale computing centers, notably by scheduling and placing jobs.

Batsim overview
  • Analyze and compare online scheduling algorithms.
  • Sound simulation models thanks to SimGrid.
  • Develop algorithms (in any programming language) without SimGrid knowledge, or to plug existing algorithm implementations to Batsim. Done thanks to a Protocol between Batsim and the schedulers
  • Several ways to model how jobs should be simulated. Allows multiple levels of realism regarding several phenomena. Highly customizable to your needs.
  • Keeping the implementation robust and maintainable is important to us.

The present documentation focuses on Batsim technical aspects. The most up-to-date scientific description of Batsim is done in Millian Poquet’s PhD thesis (chapters 3 and 4). There is also the outdated Batsim initial white paper — please cite it (bibtex) if you use Batsim for your research.

Simulation inputs