Bastien C. M. Vieublé

Academy of Mathematics and Systems Science,

Chinese Academy of Sciences,

Haidian District,

Beijing, China.

I received an M.Sc. in applied mathematics and computer science from ENSEEIHT (french engineering school) in September 2019.

I completed my Ph.D. thesis (Sep 2019 - Nov 2022) in the APO team at Institut de Recherche en Informatique de Toulouse (IRIT) under the supervision of Alfredo Buttari and Théo Mary.

I was a Research Associate in the Numerical Linear Algebra Group of the University of Manchester working with Professor Nicholas J. Higham.

I am now working at the Chinese Academy of Sciences in Beijing under the supervision of Professor Xin Liu.

I have strong ties with MUMPS Technologies with whom I collaborated and will continue to collaborate on the improvement of the the MUMPS sparse direct solver.

My research interests cover various topics related to linear algebra, mixed precision, approximate computing, sparse direct and iterative linear solvers, and high performance computing.

news

Aug 26, 2024	I am extremely grateful to have been awarded the Research Fund for International Young Scientists of NSFC (National Natural Science Foundation of China) for my project entitled “Resource-efficient approximate computing GMRES for the solution of linear systems of equations”.
May 16, 2024	Many thanks to Eda Oktay and Petr Vacek for the invitation to talk in their minisymposium “Approximate Computing Techniques in Numerical Linear Algebra” hosted by the SIAM LA24 conference. My talk was entitled “A backward error analysis framework for GMRES”, the slides are available here.
May 14, 2024	I am delighted to organize with Oleg Balabanov the minisymposium “Approximate Computing Techniques for Orthogonalization Processes” for the SIAM LA24 conference in Paris this year. Our speakers are: Riley Murray (Sandia National Laboratories), Martina Iannacito (Università di Bologna), Oleg Balabanov (UC Berkeley and ICSI), and Matthieu Robeyns (Université Paris-Saclay).
Apr 2, 2024	NEW PREPRINT!!! It’s called “A modular framework for the backward error analysis of GMRES”, you can find the full .pdf version here.
Jan 29, 2024	I have been invited to give a lecture to postgrad students at Université Paris-Saclay. The topic was “Mixed precision iterative refinement”. You can find the slides here. Thank you Oguz for the invitation!
Dec 1, 2023	Just started my postdoc at the Chinese Academy of Sciences (Academy of Mathematics and Systems Science) under the supervision of Professor Xin Liu!
Nov 1, 2023	Our preprint “Five-Precision GMRES-based iterative refinement” has been accepted for publication in SIAM Journal on Matrix Analysis and Applications (SIMAX).
Sep 21, 2023	I have been awarded the Leopold Escande Prize rewarding the best 15% PhD theses of Toulouse INP.
Jun 28, 2023	I am delighted to organize with Xiaobo Liu and Nick Higham the minisymposium “Approximate Computing in Numerical Linear Algebra” for the Biennial Numerical Analysis conference in Glasgow this year. Our speakers are: Petr Vacek (Charles University), Hei Yin Lam (EPFL), Silviu-Ioan Filip (IRISA), Edouard Timsit (INRIA Paris), Martina Iannacito (University of Leuven), Xiaobo Liu (University of Manchester).
Jun 23, 2023	I presented my recent work about a new backward error analysis for GMRES at FoCM and MUMPS user days. We are working hard to deliver a preprint on the topic for everybody to read as soon as possible!
Apr 27, 2023	The SIAM-IMA student chapter conference in which I am part of the organizing committee has been held successfully. Ten talks from students and invited speakers were spread on one full-day. You can find the full program on the website here. Congrats to the SIAM student chapter of the University of Manchester for the hard work!
Feb 1, 2023	I have been invited to give a lecture to postgrad students at Université Paris-Saclay. You can find the slides here. Thank you Oguz for the invitation!
Nov 30, 2022	I defended my Ph.D. thesis entitled “Mixed precision iterative refinement for the solution of large sparse linear systems” in front of my jury composed of Sherry Li, Julien Langou, Erin Carson, Emmanuel Agullo, Marc Baboulin, and Serge Gratton. Many thanks for their time and their kind evaluation! You can find the defense slides here and the manuscript here.
Nov 1, 2022	I started my new job as a research associate at the University of Manchester.