Work In Tech

Requisition #: 15375

Our Mission: Powering Innovation That Drives Human Advancement

When visionary companies need to know how their world-changing ideas will perform, they close the gap between design and reality with Ansys simulation. For more than 50 years, Ansys software has enabled innovators across industries to push boundaries by using the predictive power of simulation. From sustainable transportation to advanced semiconductors, from satellite systems to life-saving medical devices, the next great leaps in human advancement will be powered by Ansys.

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Stage de 6 mois niveau master / fin d'études d'ingénieur, pour un(e) passioné de modélisation mathématique et de programmation avec idéalement de bonnes connaissances en openGL, fortran, en compilation, et environnement linux ainsi qu'un vif intérêt pour la recherche médicale:

Programmation GPU du solveur LS-DYNA pour la simulation électrique du cœur

La modélisation et la simulation du cœur constituent un outil prometteur afin de mieux diagnostiquer, planifier et vérifier les thérapies, au point que le cœur soit devenu l’organe virtuel le plus sophistiqué jamais développé. L'utilisation de méthodes numériques précises et rapides est cruciale pour simuler avec réalisme les phénomènes bioélectriques dans le cœur. Le solveur monodomaine [1,2], qui permet de résoudre les équations de propagation de l'excitation électrique dans le tissu cardiaque, est largement utilisé pour ces simulations. Cependant, ces calculs sont souvent coûteux en temps et en ressources, en particulier lorsqu'ils sont effectués sur de grands domaines ou des maillages fins.

L'objectif de ce stage est d'implémenter une version GPU du solveur monodomaine dans le logiciel LS-DYNA [3], afin d'accélérer significativement les temps de calcul [4]. Cette accélération est essentielle pour rendre possible la quantification d’incertitudes des paramètres des modèles ainsi que des analyses de sensibilités aux paramètres, dans des temps raisonnables. La programmation sera réalisée en Fortran, et les performances de la nouvelle implémentation seront évaluées à l'aide de cas tests représentatifs des situations rencontrées en modélisation cardiaque.

Qualifications :

• Niveau Master en ingénierie, mathématiques appliqués, ingénierie biomédicale ou équivalent
• Bonnes bases en programmation openGL et fortran, en compilation, et environnement linux
• Capacités rédactionnelles et en communication en français et en anglais
• Un attrait pour la recherche biomédicale est très souhaité

GPU Programming of the LS-DYNA Solver for Cardiac Electrical Simulation

Cardiac modeling and simulation have become promising tools for improving diagnosis, treatment planning, and therapy validation, making the heart the most sophisticated virtual organ ever developed. The use of accurate and fast numerical methods is crucial to realistically simulate bioelectrical phenomena in the heart. The monodomain solver [1,2], which solves the equations governing the propagation of electrical excitation in cardiac tissue, is widely used for such simulations. However, these computations are often time- and resource-intensive, especially when applied to large domains or fine meshes.

The goal of this internship is to implement a GPU-accelerated version of the monodomain solver within the LS-DYNA software [3], in order to significantly reduce computation times [4]. his acceleration is essential to enable uncertainty quantification of model parameters as well as sensitivity analyses within reasonable timeframes. Programming will be performed in Fortran, and the performance of the new implementation will be evaluated using test cases representative of situations encountered in cardiac modeling.

Qualifications:

• Master’s level in Engineering, Applied Mathematics, Biomedical Engineering, or equivalent
• Solid background in OpenGL and Fortran programming, compiling, and Linux environments
• Strong writing and communication skills in both French and English
• A strong interest in biomedical research is highly desirable

Bibliography:

[1] Boulakia, M., Cazeau, S., Fernández, M. A., Gerbeau, J. F., & Zemzemi, N. (2010). Mathematical modeling of electrocardiograms: a numerical study. Annals of biomedical engineering, 38, 1071-1097.

[2] Wikipedia contributors. (2024, September 16). Monodomain model. Wikipedia. https://en.wikipedia.org/wiki/Monodomain_model

[3] https://lsdyna.ansys.com/

[4] Mena, A., Ferrero, J. M., & Matas, J. F. R. (2015). GPU accelerated solver for nonlinear reaction–diffusion systems. Application to the electrophysiology problem. Computer Physics Communications, 196, 280-289.

At Ansys, we know that changing the world takes vision, skill, and each other. We fuel new ideas, build relationships, and help each other realize our greatest potential. We are ONE Ansys. We operate on three key components: the commitments to our stakeholders, the behaviors of how we work together, and the actions of how we deliver results. Together as ONE Ansys, we are powering innovation that drives human advancement.

Our Commitments:

• Amaze with innovative products and solutions
• Make our customers incredibly successful
• Act with integrity
• Ensure employees thrive and shareholders prosper

Our Values:

• Adaptability: Be open, welcome what's next
• Courage: Be courageous, move forward passionately
• Generosity: Be generous, share, listen, serve
• Authenticity: Be you, make us stronger

Our Actions:

• We commit to audacious goals
• We work seamlessly as a team
• We demonstrate mastery
• We deliver outstanding results

INCLUSION IS AT OUR CORE
We believe diverse thinking leads to better outcomes. We are committed to creating and nurturing a workplace that fuels this by welcoming people, no matter their background, identity, or experience, to a workplace where they are valued and where diversity, inclusion, equity, and belonging thrive.

WELCOME WHAT’S NEXT IN YOUR CAREER AT ANSYS

At Ansys, you will find yourself among the sharpest minds and most visionary leaders across the globe. Collectively we strive to change the world with innovative technology and transformational solutions. With a prestigious reputation in working with well-known, world-class companies, standards at Ansys are high — met by those willing to rise to the occasion and meet those challenges head on. Our team is passionate about pushing the limits of world-class simulation technology, empowering our customers to turn their design concepts into successful, innovative products faster and at a lower cost.

At Ansys, it’s about the learning, the discovery, and the collaboration. It’s about the “what’s next” as much as the “mission accomplished.” And it’s about the melding of disciplined intellect with strategic direction and results that have, can, and do impact real people in real ways. All this is forged within a working environment built on respect, autonomy, and ethics.

CREATING A PLACE WE’RE PROUD TO BE
Ansys is an S&P 500 company and a member of the NASDAQ-100. We are proud to have been recognized for the following more recent awards, although our list goes on: Newsweek’s Most Loved Workplace globally and in the U.S., Gold Stevie Award Winner, America’s Most Responsible Companies, Fast Company World Changing Ideas, Great Place to Work Certified (Belgium, China, Greece, France, India, Japan, Korea, Spain, Sweden, Taiwan, and U.K.).

For more information, please visit us at www.ansys.com

Ansys is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, and other protected characteristics.

Ansys does not accept unsolicited referrals for vacancies, and any unsolicited referral will become the property of Ansys. Upon hire, no fee will be owed to the agency, person, or entity.