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Research Activities > Programs > Fast Approximate Algorithms > Toru Takahashi

Fast Multipole Method, Tree-Code and Related Approximate Algorithms.
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Fast Computing of Boundary Integral Equation Method by a Special-Purpose Computer

Dr. Toru Takahashi

Ebisuzaki Computational Astrophysics Lab at Inst. of Physical and Chemical Research (RIKEN)

Abstract:   I present a method to accelerate boundary integral equation method (BIEM). The most time-consuming part of BIEM is the evaluation of the layer potential. I put this part onto MDGRAPE-2. MDGRAPE-2 is originally a special-purpose computer dedicated for calculation of the pairwise interactions among particles in molecular dynamics simulations. I applied our method to some problems in applied mechanics. Numerical tests showed that BIEM is accelerated by a factor of 10--100. Moreover, I will talk about a method which enables a special-purpose computer to compute BIEM based on a fast algorithm.