数値解析・応用解析セミナー 7月22日(木) 15:30 -- 17:00 Yu-Hsun Lee (京都大学情報学研究科) ``GPU Computing Aiming at Vortex Filament Evolution '' <研究発表要旨> We investigate a high-performance parallel computation for the vortex filament method based on Rosenhead's regularized Biot-Savart law for incompressible fluid on Graphics Processing Units (GPUs). We focus on the numerical treatment of the Biot-Savart law and provide computation reliability for vortex filament evolution. We accelerate computations by GPU architecture and improve the computational speed by optimizing the choice of warp size and using shared memory. We reproduce the numerical reconnection of vortex filaments by GPU computation and establish reliability based on numerical experiments. Our proposed GPU computation enables us to investigate temporal and spatial discretization parameters to mitigate disturbance in numerical solutions in reasonable computational time. We measure the rounding error quantitatively by comparing the numerical solutions with quadruple precision and multiple-precision arithmetic. We also propose a method to estimate the reconnection time. ●セミナー室: 京都大学 総合研究12号館 2階203号 (応用解析学講座セミナー室) ●総合研究12号館はキャンパスマップでは「京都大学本部構内 54番建物」です。 ------------------------------------------------------------- セミナー連絡先: 京都大学大学院 情報学研究科 先端数理科学専攻 磯 祐介 e-mail; iso at i.kyoto-u.ac.jp