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Key figures
Key figures
189 people work at LJLL
86 permanent staff
80 researchers and permanent lecturers
6 engineers, technicians and administrative staff
103 non-permanent staff
74 Phd students
15 post-doc and ATER
14 emeritus scholars and external collaborators
January 2022
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GdT Thesards P. Jolivet
Domain decomposition methods on parallel architectures - Pierre Jolivet
Domain decomposition methods are one of the dominant paradigms in contemporary large-scale numerical simulation on modern computer architectures such as massively parallel distributed memory multiprocessor clusters. In this talk, I will introduce various aspects of domain decomposition methods necessary to understand how can one solve efficiently large linear systems arising from the finite element method and assess the performance of the numerical methods and their implementation. I will then look into different tests cases carried on Curie, the largest French supercomputer (theoretical peak performance : 2 PFLOPS) which has been opened for scientists since March 2012.