| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce calculation time of spherical harmonic function transforms. <P>SOLUTION: The parallel computing system that performs simulation of a sphere by using a spherical harmonic function, and comprises a plurality of computing nodes interconnected with each other via a communication path. Each of the computing nodes includes: a storage unit that stores spectral data obtained by dividing spectral space data into a plurality of data elements on the basis of longitudinal wavenumber; a computation unit that performs inverse Legendre transformation for a computation region divided in a latitudinal direction on the sphere and thereby transforms each of the spectral data elements to Fourier coefficient data; and a communication unit that transmits the Fourier coefficient data, obtained through the transformation performed by the computation unit, to another computing node via the communication path after the inverse Legendre transformation for the next computation region divided in the latitudinal direction on the sphere has been started by the computation unit. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
