Since the end of October 2019, I am a software developer at MathWorks working on the Parallel Computing Toolbox in the Parallel Algorithms team.
From February 2019 to October 2019, I was a post-doctoral research associate
at Johannes Gutenberg Universität (Mainz, Germany),
working in the group of
Markus Bachmayr.
Before that, I was a Ph.D. student at the Laboratoire Jacques-Louis Lions
(Sorbonne university) as part of the Inria team Alpines
under the supervision of Laura Grigori.
My Ph.D. has been funded through the H2020 project NLAFET.
Research interests
Numerical Linear Algebra
High-performance Computing
Tensor computations
Sparse Matrix Computations
Software
Bocop toy test: a mouse escapes a maze.
preAlps (2016 - 2019)
Developper of the parallel version(s) of the E(nlarged) C(onjugate) G(radient) method in C and MPI inside the preAlps library.
Features
Matrix and preconditioner free (Reverse Communication Interface).
Very light: it only needs BLAS and LAPACK (Intel MKL).
Scalability assessed up to 16,384 cores on elasticity matrices.
OT,
Iterative methods for solving linear systems on massively parallel architectures, pdf.
Publication
Laura Grigori, OT,
Scalable linear solvers based on Enlarged Krylov subspaces with
dynamic reduction of search directions,
SIAM Journal on Scientific Computing, 41(5), C522–C547, 2019, pdf.
Technical reports
Laura Grigori, OT,
Enlarged Conjugate Gradient with adaptive reduction of search directions,
pdf (old version).
Simplice Donfack, Laura Grigori, OT,
NLAFET Deliverable 4.5: Integration,
pdf.
Maksims Abalenkovs, Simplice Donfack, Jack Dongarra, Iain Duff, Laura Grigori, Stojce Nakov, Jan Papez, OT, Mawussi Zounon,
NLAFET Deliverable 5.2: Software integration,
pdf.
Simplice Donfack, Laura Grigori, OT,
NLAFET Deliverable 4.2: Analysis and algorithm design,
pdf.
Frédéric Bonnans, Daphné Giorgi, Benjamin Heymann, Pierre Martinon, OT,
BocopHJB 1.0.1 – User Guide,
pdf.
Talks
Enlarged Conjugate Gradients for reducing communication,
Seminar of the Scalable Algorithms group at Sandia National Laboratories, Albuquerque, USA (June 2018).
Enlarged Conjugate Gradient method for reducing communication,
SIAM PP18, MS 55, Tokyo, Japan (March 2018).
Enlarged GMRES for reducing communication,
SIAM PP18, MS 28, Tokyo, Japan (March 2018). I filled in for Hussam Al Daas.
Enlarged Krylov subspace methods for reducing communication,
PASC 17, MS 45, Lugano, Switzerland (June 2017).
Enlarged GMRES,
SIAM CSE17, MS254, Atlanta, USA (March 2017). I filled in for Hussam Al Daas.