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Subaru Seminars are usually held in Room 104 of the Hilo Base Facility, adjacent to the main lobby. Everyone is welcome to attend. If you would like to give a seminar, please contact Subaru seminar organizers (Rusu Cristian Eduard, Tae-Soo Pyo, Nagayoshi Ohashi) by email : sseminar_at_subaru.naoj.org (please change"_at" to @).

December 4, Monday, 11am in 104B

" Algorithmic (R)evolution for Extreme Scale "

Dr. Hatem Ltaief (King Abdullah University of Science and Technology)


Today, the fastest Petascale Supercomputers from the Top500 list expose million of cores and the scientific community anticipates concurrency of a billion threads moving forward with the Exascale era. The current linear algebra software stack relies on the bulk synchronous programming model, which has been around for decades. This programming model impedes parallel performance and underutilizes current and future hardware resources. New disruptive algorithmic adaptations to extreme scale are required to efficiently exploit the underlying hardware architectures. Although this may look like a daunting challenge, e.g., in terms of scientific code rewriting, this is also a unique opportunity to create and design new synchronization-reducing and communication-reducing numerical linear algebra algorithms, for which most of scientific applications rely on for high performance computing. This talk will focus on linear algebra matrix operations critical for computational astronomy applications, i.e., basic linear algebra subroutines (BLAS), linear solvers and singular value decomposition (SVD).


Seminars are also held at JAC, CFHT, and IfA.



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