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Graphics processing unit accelerated one-dimensional blood flow computation in the human arterial tree.
- Source :
-
International Journal for Numerical Methods in Biomedical Engineering . Dec2013, Vol. 29 Issue 12, p1428-1455. 28p. - Publication Year :
- 2013
-
Abstract
- SUMMARY One-dimensional blood flow models have been used extensively for computing pressure and flow waveforms in the human arterial circulation. We propose an improved numerical implementation based on a graphics processing unit (GPU) for the acceleration of the execution time of one-dimensional model. A novel parallel hybrid CPU-GPU algorithm with compact copy operations (PHCGCC) and a parallel GPU only (PGO) algorithm are developed, which are compared against previously introduced PHCG versions, a single-threaded CPU only algorithm and a multi-threaded CPU only algorithm. Different second-order numerical schemes (Lax-Wendroff and Taylor series) are evaluated for the numerical solution of one-dimensional model, and the computational setups include physiologically motivated non-periodic (Windkessel) and periodic boundary conditions (BC) (structured tree) and elastic and viscoelastic wall laws. Both the PHCGCC and the PGO implementations improved the execution time significantly. The speed-up values over the single-threaded CPU only implementation range from 5.26 to 8.10 × , whereas the speed-up values over the multi-threaded CPU only implementation range from 1.84 to 4.02 × . The PHCGCC algorithm performs best for an elastic wall law with non-periodic BC and for viscoelastic wall laws, whereas the PGO algorithm performs best for an elastic wall law with periodic BC. Copyright © 2013 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20407939
- Volume :
- 29
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- International Journal for Numerical Methods in Biomedical Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 92673201
- Full Text :
- https://doi.org/10.1002/cnm.2585