Journal Article

FZJ-2016-05522

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png High-performance generation of the Hamiltonian and Overlap matrices in FLAPW methods

Di Napoli, E. (Corresponding author)FZJ* ; Peise, E. (Corresponding author) ; Hrywniak, M. (Corresponding author) ; Bientinesi, P. (Corresponding author)

2017
North Holland Publ. Co. Amsterdam

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Please use a persistent id in citations: doi:10.1016/j.cpc.2016.10.003

Abstract: One of the greatest efforts of computational scientists is to translate the mathematical model describing a class of physical phenomena into large and complex codes. Many of these codes face the difficulty of implementing the mathematical operations in the model in terms of low level optimized kernels offering both performance and portability. Legacy codes suffer from the additional curse of rigid design choices based on outdated performance metrics (e.g. minimization of memory footprint). Using a representative code from the Materials Science community, we propose a methodology to restructure the most expensive operations in terms of an optimized combination of dense linear algebra (BLAS3) kernels. The resulting algorithm guarantees an increased performance and an extended life span of this code, enabling larger scale simulations.

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Contributing Institute(s):

1. Jülich Supercomputing Center (JSC)
2. JARA - HPC (JARA-HPC)

Appears in the scientific report 2016

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Database coverage:
; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; No Authors Fulltext ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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