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Dualna hitra gradientna metoda na grafičnih procesnih enotah
ID RAMOVŠ, IZTOK (Author), ID Lotrič, Uroš (Mentor) More about this mentor... This link opens in a new window

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Abstract
V napravah tipa tokamak je eden izmed večjih izzivov proces vodenja oblike in toka plazme, ki je pod konstantnim vplivom motenj. Tega izziva se je bilo možno lotiti z uporabo metode prediktivnega vodenja. Reševanje optimizacijskega problema prediktivnega vodenja je bilo narejeno z algoritmom z dualno hitro gradientno metodo. Vendar pa se je izkazalo, da se narejena implementacija izvaja prepočasi za hitro dinamiko v napravah tokamak. Cilj te diplomske naloge je ponovna implementacija te metode z uporabo paralelnih tehnologij z namenom hitrejšega izvajanja. Pri tem moramo paziti, da paralelna implementacija probleme rešuje pravilno in z enako natančnostjo kot njena sekvenčna izvedba. Pohitritev poizkušamo doseči s paralelnim izvajanjem algoritma na splošno namenskih grafičnih procesnih enotah z izbrano tehnologijo OpenCL.

Language:Slovenian
Keywords:Tokamak, MPC, OpenCL, dualna hitra gradientna metoda, paralelna implementacija, GPE.
Work type:Bachelor thesis/paper (mb11)
Organization:FRI - Faculty of computer and information science
Year:2018
Publication date in RUL:11.09.2018
Views:550
Downloads:223
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Secondary language

Language:English
Title:Dual Fast Gradient Method on Graphical Processing Units
Abstract:
One of the biggest challenges in tokamak devices is to maintain plasma shape which is affected by constant disturbances. One of the possible solutions for this challenge is usage of model predictive control methodology. Optimization problem which represents used methodology was solved with dual fast gradient method. However, described implementation was too slow. The goal of this thesis is to re-implement the existing implementation using parallel technologies. New implementation must be able to provide solutions with the same level of accuracy as current serial implementation. We attempt to achieve faster execution with parallel program running on general purpose graphics processing units. Chosen technology is OpenCL framework.

Keywords:Tokamak, MPC, OpenCL, dual fast gradient method, parallel implementation, GPU.

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