Pierre Jolivet

# Welcome

I am a research scientist at CNRS. The Toulouse Institute of Computer Science Research (IRIT) is my host laboratory.

I work in the field of high-performance computing (especially for the design of fast and robust solvers in computational sciences).

Here is a list of software that I am developing:

I also (seldom) contribute to:

I also (seldom) contribute to:

Right-hand side figure: Poisson equation solved with BDD-GenEO on 16 subdomains using Feel++.

## Contact

pierre @ joliv · et

+33 5 34 32 21 65

+33 5 34 32 21 65

ENSEEIHT

Office F-316

2 rue Charles Camichel

31071 Toulouse Cedex 7

France

Office F-316

2 rue Charles Camichel

31071 Toulouse Cedex 7

France

## Selected awards

- 2015 Bull–Joseph Fourier Prize (in collaboration with F. Nataf, F. Hecht, P.-H. Tournier, and V. Dolean).
- Ph.D. prize from Université Grenoble Alpes in 2015 (seven recipients out of more than 3,000 graduate students).
- ETH Postdoctoral Fellowship in 2014.
- Microsoft Prize for Best Algorithm and CitiFX Prize for Best Trading Model during UCL 2011 Algorithmic Trading Competition.

## Publications

- T. Roget, P. J., S. Méléard, M. Rera. Positive selection of senescence through increased evolvability: ageing is not a by-product of evolution. Preprint (submitted to Science Advances).
- H. Al Daas, P. J., T. Rees. Efficient algebraic two-level Schwarz preconditioner for sparse matrices. Preprint (submitted to SIAM Journal on Scientific Computing).
- H. Li, T. Kondoh, P. J., N. Nakayama, K. Furuta, H. Zhang, K. Izui, S. Nishiwaki. Topology optimization for lift–drag problems incorporated with isotropic adaptive mesh. Preprint submitted to Structural and Multidisciplinary Optimization.
- P.-H. Tournier, P. J., V. Dolean, H. S. Aghamiry, S. Operto, S. Riffo. Three-dimensional finite-difference & finite-element frequency-domain wave simulation with multi-level optimized additive Schwarz domain-decomposition preconditioner: a tool for FWI of sparse node datasets. Preprint (submitted to Geophysics).
- H. Al Daas, P. J. A robust algebraic multilevel domain decomposition preconditioner for sparse symmetric positive definite matrices. Preprint (submitted to SIAM Journal on Scientific Computing).
- L. Audibert, H. Girardon, H. Haddar, P. J. Inversion of eddy-current signals using a level-set method and block Krylov solvers. Preprint (submitted to SIAM Journal on Scientific Computing).
- N. Bootland, V. Dwarka, P. J., V. Dolean, and C. Vuik. Inexact subdomain solves using deflated GMRES for Helmholtz problems. Preprint (accepted for publication in Domain Decomposition Methods in Science and Engineering XXVI).
- H. Al Daas, P. J., J. A. Scott. A robust algebraic domain decomposition preconditioner for sparse normal equations. Public repository.
- H. Li, T. Kondoh, P. J., K. Furuta, T. Yamada, B. Zhu, H. Zhang, K. Izui, S. Nishiwaki. Optimum design and thermal modeling for 2D and 3D natural convection problems incorporating level set-based topology optimization with body-fitted mesh.
- H. Li, T. Kondoh, P. J., K. Wano, K. Furuta, T. Yamada, B. Zhu, K. Izui, S. Nishiwaki. Three-dimensional topology optimization of a fluid–structure system using body-fitted mesh adaption based on the level-set method.
- N. Bootland, V. Dolean, P. J., P.-H. Tournier. A comparison of coarse spaces for Helmholtz problems in the high frequency regime.
- J. Sierra, P. J., F. Giannetti, V. Citro. Adjoint-based sensitivity analysis of periodic orbits by the Fourier–Galerkin method.
- P. J., M. A. Badri, Y. Favennec. Deterministic radiative transfer equation solver on unstructured tetrahedral meshes: efficient assembly and preconditioning.
- H. Al Daas, L. Grigori, P. J., P.-H. Tournier. A multilevel Schwarz preconditioner based on a hierarchy of robust coarse spaces. Public repository.
- H. Li, T. Yamada, P. J., K. Izui, S. Nishiwaki. Full-scale 3D structural topology optimization using adaptive mesh refinement based on the level-set method.
- P. J., J. E. Roman, S. Zampini. KSPHPDDM and PCHPDDM: extending PETSc with advanced Krylov methods and robust multilevel overlapping Schwarz preconditioners. Public repository.
- F. Feppon, G. Allaire, C. Dapogny, P. J. Body-fitted topology optimization of 2D and 3D fluid-to-fluid heat exchangers.
- P. Marchand, X. Claeys, P. J., F. Nataf, P.-H. Tournier. Two-level preconditioning for
*h*-version boundary element approximation of hypersingular operator with GenEO. - M. A. Badri, Y. Favennec, P. J., B. Rousseau. Conductive–radiative heat transfer within SiC-based cellular ceramics at high temperatures: a discrete-scale finite element analysis.
- F. Feppon, G. Allaire, C. Dapogny, P. J. Topology optimization of thermal fluid–structure systems using body-fitted meshes and parallel computing.
- Y. Favennec, T. Mathew, M. A. Badri, P. J., B. Rousseau, D. Lemonnier, P. J. Coelho. Ad hoc angular discretization of the radiative transfer equation.
- J. Moulin, P. J., O. Marquet. Augmented Lagrangian preconditioner for large-scale hydrodynamic stability analysis. Public repository.
- M. A. Badri, P. J., B. Rousseau, Y. Favennec. Preconditioned Krylov subspace methods for solving radiative transfer problems with scattering and reflection.
- F. Mercier, Y. Michel, T. Montmerle, P. J., S. Gürol. Speeding up the ensemble data assimilation system of the limited area model of Météo-France using a block Krylov algorithm.
- P.-H. Tournier, I. Aliferis, M. Bonazzoli, M. De Buhan, M. Darbas, V. Dolean, F. Hecht, P. J., I. El Kanfoud, C. Migliaccio, F. Nataf, C. Pichot, S. Semenov. Microwave tomographic imaging of cerebrovascular accidents by using High-Performance Computing.
- F. Mercier, S. Gürol, P. J., Y. Michel, T. Montmerle. Block Krylov methods for accelerating ensembles of variational data assimilations.
- M. A. Badri, P. J., B. Rousseau, S. Le Corre, H. Digonnet, Y. Favennec. Vectorial finite elements for solving the radiative transfer equation.
- R. Haferssas, P. J., S. Rubino. Efficient and scalable discretization of the Navier–Stokes equations with LPS modeling.
- M. A. Badri, P. J., B. Rousseau, Y. Favennec. High performance computation of radiative transfer equation using the finite element method.
- R. Haferssas, P. J., F. Nataf. An additive Schwarz method type theory for Lions's algorithm and a symmetrized optimized restricted additive Schwarz method.
- R. Haferssas, P. J., F. Nataf. An adaptive coarse space for P.-L. Lions's algorithm and optimized Schwarz methods.
- P. J., P.-H. Tournier. Block iterative methods and recycling for improved scalability of linear solvers. Acceptance rate: 18% (82/446).
- S. Di Girolamo, P. J., K. D. Underwood, T. Hoefler. Exploiting offload-enabled network interfaces.
- V. Dolean, P. J., F. Nataf. An introduction to domain decomposition methods: algorithms, theory, and parallel implementation.
- R. Haferssas, P. J., F. Nataf. A robust coarse space for optimized Schwarz methods: SORAS-GenEO-2.
- S. Di Girolamo, P. J., K. D. Underwood, T. Hoefler. Exploiting offload enabled network interfaces. Best Paper Awardee at HotI ‘15.
- V. Dolean, P. J., F. Nataf, N. Spillane, H. Xiang. Two-level domain decomposition methods for highly heterogeneous Darcy equations. Connections with multiscale methods.
- P. J., F. Hecht, F. Nataf, C. Prud'homme. Scalable domain decomposition preconditioners for heterogeneous elliptic problems.
- P. J., F. Hecht, F. Nataf, C. Prud'homme. Scalable domain decomposition preconditioners for heterogeneous elliptic problems. Acceptance rate: 20% (92/457). Best Paper Finalist at SC13.
- P. J., F. Hecht, F. Nataf, C. Prud'homme. Overlapping domain decomposition methods with FreeFem++.
- P. J., V. Dolean, F. Hecht, F. Nataf, C. Prud'homme, N. Spillane. High-performance domain decomposition methods on massively parallel architectures with FreeFem++.
- S. Allassonnière, P. J., C. Giraud. Detecting long distance conditional correlations between anatomical regions using Gaussian graphical models.

## Teaching

- Domain Decomposition Methods at INSA (since 2018).
- Sparse Distributed Linear Algebra at ENSEEIHT (since 2015).

## Education

- Ph.D. in applied mathematics — Université de Grenoble. Link to thesis (8.9 MB).
- M.Sc. in Computational Science & Engineering (with high honor) — Ensimag, Grenoble.
- M.Sc. in applied mathematics (with highest honor) — Université Joseph Fourier, Grenoble.