Speeding up N-body Calculations on Machines without Hardware Square Root
Speeding up N-body Calculations on Machines without Hardware Square Root
复制标题
在没有硬件平方根的机器上加速 N 体计算
DOI:
10.1155/1992/974623
复制
发表时间:
1992
影响因子:
--
通讯作者:
A. Karp
中科院分区:
文献类型:
--
作者:
A. Karp
The most time consuming part of an N-body simulation is computing the components of the accelerations of the particles. On most machines the slowest part of computing the acceleration is in evaluating $r^{-3/2}$, which is especially true on machines that do the square root in software. This note shows how to cut the time for this part of the calculation by a factor of 3 or more using standard Fortran.