Extreme scalability challenges in micro-finite element simulations of human bone
| Autor: | C. Bekas, A. Curioni, P. Arbenz, C. Flaig, G. H. Van Lenthe, R. Müller, A. J. Wirth |
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| Rok vydání: | 2010 |
| Předmět: |
Computational Theory and Mathematics
Computer Networks and Communications 0206 medical engineering 010103 numerical & computational mathematics 02 engineering and technology 0101 mathematics 020601 biomedical engineering 01 natural sciences Software Computer Science Applications Theoretical Computer Science |
| Zdroj: | Concurrency and Computation: Practice and Experience |
| DOI: | 10.1002/cpe.1591 |
| Popis: | Coupling recent imaging capabilities with microstructural finite element (µFE) analysis offers a powerful tool to determine bone stiffness and strength. It shows high potential to improve the individual fracture risk prediction a tool much needed in the diagnosis and treatment of osteoporosis that is according to the World Health Organization (WHO) second only to cardiovascular disease as a leading health care problem. We adapted a multilevel preconditioned conjugate gradient method to solve the very large voxel models that arise in the µFE bone structure analysis. The intricate microstructure properties of bone lead to sparse matrices with billions of rows thus rendering this application to be an ideal candidate for massively parallel architectures such as the BG/L Supercomputer. In this work we present our progress as well as the challenges we were able to identify in our quest to achieve scalability to thousands of BG/L cores. |
| Databáze: | OpenAIRE |
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