An OpenCL implementation of ellipsoidal harmonics
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025615%3A_____%2F13%3A%230001899" target="_blank" >RIV/00025615:_____/13:#0001899 - isvavai.cz</a>
Výsledek na webu
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DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
An OpenCL implementation of ellipsoidal harmonics
Popis výsledku v původním jazyce
The progress in computer development makes it possible to solve many problems of physical geodesy just by means of numerical arrangements unimaginable before. Nevertheless, considering a precise evaluation of spheroidal (spherical and ellipsoidal) harmonic functions in our typical task, we still observe a huge performance gap between numerical demands and capabilities of the present CPUs. Known methods for evaluation of Legendre functions (of the first as well as 2nd kind) are basically recurrent and thus sequential, where one step involves just a few arithmetic operations. Therefore, it seems to be challenging, but still feasible, to arrange an evaluation of Legendre functions in a way that admits wide SIMD parallelism. Regarding this aim, we provideOpen Computing Language (OpenCL) implementation of the streaming-parallel algorithm for evaluation of ellipsoidal harmonic functions and their derivatives. The developed algorithm is free of assumptions about the function arguments, maxim
Název v anglickém jazyce
An OpenCL implementation of ellipsoidal harmonics
Popis výsledku anglicky
The progress in computer development makes it possible to solve many problems of physical geodesy just by means of numerical arrangements unimaginable before. Nevertheless, considering a precise evaluation of spheroidal (spherical and ellipsoidal) harmonic functions in our typical task, we still observe a huge performance gap between numerical demands and capabilities of the present CPUs. Known methods for evaluation of Legendre functions (of the first as well as 2nd kind) are basically recurrent and thus sequential, where one step involves just a few arithmetic operations. Therefore, it seems to be challenging, but still feasible, to arrange an evaluation of Legendre functions in a way that admits wide SIMD parallelism. Regarding this aim, we provideOpen Computing Language (OpenCL) implementation of the streaming-parallel algorithm for evaluation of ellipsoidal harmonic functions and their derivatives. The developed algorithm is free of assumptions about the function arguments, maxim
Klasifikace
Druh
A - Audiovizuální tvorba
CEP obor
DE - Zemský magnetismus, geodesie, geografie
OECD FORD obor
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Návaznosti výsledku
Projekt
<a href="/cs/project/ED1.1.00%2F02.0090" target="_blank" >ED1.1.00/02.0090: NTIS - Nové technologie pro informační společnost</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2013
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
ISBN
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Místo vydání
Rome
Název nakladatele resp. objednatele
International Assocoation of Geodesy
Verze
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Identifikační číslo nosiče
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