Research Engineer in Operating Systems

January 31, 2023
Offerd Salary:Negotiation
Working address:N/A
Contract Type:Other
Working Time:Negotigation
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2022-05468 - Research Engineer in Operating Systems

Level of qualifications required : Graduate degree or equivalent

Fonction : Temporary scientific engineer


Efficient lock algorithms are key to ensuring application scalability on multi-core architectures 1, 2, 3. While many lock algorithms have been proposed in the past decades to improve lock handover times under high contention as well as cache and NUMA locality, even the best lock algorithms can perform poorly due to unfortunate decisions from the OS scheduler.

The Berkeley Packet Filter (BPF) makes it possible to inject verified code inside the Linux kernel. While BPF was historically used for packet filtering, it is now commonly used for profiling, and it has recently been used in more exotic use cases (e.g., 4).

We would like to use BPF to design a new family of lock algorithms that communicate and cooperate with the OS scheduler to overcome the limitations of the current state of the art.

As an engineer at Inria, you will help implement and evaluate this idea, with the objective of publishing the results in a top systems conference such as USENIX ATC or EuroSys.

1 Jean-Pierre Lozi, Florian David, Gaël Thomas, Julia Lawall, Gilles Muller. Remote Core Locking: migrating critical-section execution to improve the performance of multithreaded applications. USENIX Annual Technical Conference (USENIX ATC) 2012. https: // www.

2 Tudor David, Rachid Guerraoui, Vasileios Trigonakis. Everything you always wanted to know about synchronization but were afraid to ask. Symposium on Operating Systems Principles (SOSP) 2013. https: //

3 Hugo Guiroux, Renaud Lachaize, Vivien Quéma. Multicore locks: the case is not closed yet. USENIX Annual Technical Conference (USENIX ATC) 2016. https: // www. sessions/presentation/guiroux

4 Yoann Ghigoff, Julien Sopena, Kahina Lazri, Antoine Blin, Gilles Muller. BMC: accelerating Memcached using safe in-kernel caching and pre-stack processing. Symposium on Networked Systems Design and Implementation (NSDI) 2021. https: // www.

Main activities

Main activities (5 maximum) :

  • Design and implement algorithms
  • Evaluate the performance of the proposed algorithms
  • Write reports and papers
  • Additional activities (3 maximum) :

  • Present the work as well as related work
  • Attend seminars, workshops, and/or conferences
  • Skills

    Required Skills:

  • Thorough understanding of computer science fundamentals including data structures, algorithms, and complexity analysis
  • Good problem-solving skills
  • Knowledge and/or experience in systems/low-level programming
  • Notions of OS design
  • Advanced C programming
  • Holder of a Master's in computer science or equivalent
  • Preferred Skills:

  • Holder of a PhD in computer science
  • For applicants who don't already hold a PhD: there are opportunities for pursuing a PhD at Inria at the end of the contract.

    Benefits package
  • Subsidized meals
  • Partial reimbursement of public transport costs
  • Leave: 7 weeks of annual leave + 10 extra days off due to RTT (statutory reduction in working hours) + possibility of exceptional leave (sick children, moving home, etc.)
  • Possibility of teleworking and flexible organization of working hours
  • Professional equipment available (videoconferencing, loan of computer equipment, etc.)
  • Social, cultural and sports events and activities
  • Access to vocational training
  • General Information
  • Theme/Domain : Distributed Systems and middleware System & Networks (BAP E)

  • Town/city : Paris

  • Inria Center : CRI de Paris
  • Starting date : 2023-01-01
  • Duration of contract : 1 year, 6 months
  • Deadline to apply : 2023-01-31
  • Contacts
  • Inria Team : WHISPER
  • Recruiter : Lozi Jean-pierre /
  • About Inria

    Inria is the French national research institute dedicated to digital science and technology. It employs 2,600 people. Its 200 agile project teams, generally run jointly with academic partners, include more than 3,500 scientists and engineers working to meet the challenges of digital technology, often at the interface with other disciplines. The Institute also employs numerous talents in over forty different professions. 900 research support staff contribute to the preparation and development of scientific and entrepreneurial projects that have a worldwide impact.

    Instruction to apply

    Defence Security : This position is likely to be situated in a restricted area (ZRR), as defined in Decree No. 2011-1425 relating to the protection of national scientific and technical potential (PPST).Authorisation to enter an area is granted by the director of the unit, following a favourable Ministerial decision, as defined in the decree of 3 July 2012 relating to the PPST. An unfavourable Ministerial decision in respect of a position situated in a ZRR would result in the cancellation of the appointment.

    Recruitment Policy : As part of its diversity policy, all Inria positions are accessible to people with disabilities.

    Warning : you must enter your e-mail address in order to save your application to Inria. Applications must be submitted online on the Inria website. Processing of applications sent from other channels is not guaranteed.

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