Researcher in High Performance Calculation (Exascale) M/F
New
- Researcher in FTC
- 36 months
- Doctorate
This offer is available in English version
This offer is open to people with a document recognizing their status as a disabled worker.
Offer at a glance
The Unit
Maison de la Simulation
Contract Type
Researcher in FTC
Working hHours
Full Time
Workplace
91191 ST AUBIN
Contract Duration
36 months
Date of Hire
04/01/2027
Remuneration
Starting at €3,000 gross per month, depending on experience.
Apply Application Deadline : 28 October 2026 23:59
Job Description
Missions
Launched in 2023 for a six-year period, the NumPEx PEPR (“High-Performance Computing for Exascale”) contributes to the design and development of the numerical methods and software components that will equip future European exascale and post-exascale machines. The program is funded by the French government and led by CNRS, CEA, and Inria.
NumPEx also aims to support the scientific and industrial communities in fully exploiting the capabilities and potential of these new architectures. Application domains include, among others: weather forecasting, climate science, aeronautics, automotive, astrophysics, high-energy physics, materials science, energy production and management, biology, and healthcare.
The Exa-DI project, one of the five NumPEx projects, aims to accelerate the development of exascale applications by providing “development kits” based on the NumPEx software stack. These kits can be easily deployed and instantiated in different contexts, providing sustainable, high-performance, and portable solutions to the algorithmic and communication patterns most commonly encountered in exascale applications. These patterns will be addressed iteratively through an agile co-design and co-development process with the application community.
Exa-DI is looking for highly motivated researchers with a strong background in scientific computing to explore the scalability of different algorithmic patterns in an agile development environment.
Activity
Within an Agile team that is currently being established:
- Based on your expertise, you will contribute to the exploration of selected patterns, including the discretization of partial differential equations, block-structured adaptive mesh refinement, particle methods, and more.
- You will collaborate with the application community to identify and specify “proxy applications” that are representative of the main technical challenges associated with each pattern.
- You will develop technical solutions to scale these proxy applications, leveraging the libraries, frameworks, and tools developed by the other NumPEx teams.
- You will optimize performance and portability through informed use of parallel programming models and abstraction layers.
- You will develop benchmarks and metrics to assess the performance, scalability, and portability of the proposed solutions.
- You will integrate and deliver “development kits” for the application community.
- You will facilitate knowledge transfer by providing support and training.
- You will actively contribute to the Agile approach by helping improve processes, plan and monitor the team's work, conduct progress reviews and demonstrations, and coordinate with other teams.
Your Profil
Skills
You hold a PhD in computer science or another field, with experience in scientific computing.
You are proficient in several programming languages (Python, C/C++, or Fortran), with in-depth knowledge of parallel programming (GPU, multi-threading, etc.). You have strong software engineering skills and at least some experience with standard collaborative development tools such as Git, GitHub, CMake, Docker, Spack, GTest, CTest, etc.
You are pragmatic and able to take initiative. Your analytical skills and ability to step back and take a broader perspective enable you to approach complex problems involving multiple constraints with confidence, including tight deadlines and major technical challenges.
You enjoy working as part of a team and have a particular interest in interdisciplinary collaborations involving multiple stakeholders, at the interface between applied mathematics, computer science, and physics applications. You have excellent written and oral communication skills, in both French and English.
Your Work Environment
The positions are based at the Maison de la Simulation, on the Paris-Saclay campus in Essonne. The Maison de la Simulation is a joint research and engineering laboratory (CEA, CNRS, Université Paris-Saclay, and Université de Versailles-Saint-Quentin) specializing in high-performance computing and numerical simulation.
Compensation and benefits
Compensation
Starting at €3,000 gross per month, depending on experience.
Annual leave and RTT
44 jours
Remote Working practice and compensation
Pratique et indemnisation du TT
Transport
Prise en charge à 75% du coût et forfait mobilité durable jusqu’à 300€
About the offer
| Offer reference | UAR3441-JERCHA-008 |
|---|---|
| CN Section(s) / Research Area | Information sciences: bases of information technology, calculations, algorithms, representations, uses |
About the CNRS
The CNRS is a major player in fundamental research on a global scale. The CNRS is the only French organization active in all scientific fields. Its unique position as a multi-specialist allows it to bring together different disciplines to address the most important challenges of the contemporary world, in connection with the actors of change.
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