BENCHMARKING FORTRAN INTRINSIC FUNCTIONS

High performance of mathematical functions is essential to speed up sc ientific calculations because they are very frequently used in scienti fic computing. This paper presents performance of important Fortran in trinsic functions on the fastest vector supercomputers. It is assumed that a relationship between CPU-time and the number of function argume nts given to calculate function values is linear, and speeds of a func tion were measured using the parameters ($) over bar r(infinity), and ($) over bar n(1/2). The author also examines how the speed of the fun ction varies with respect to the selection of arguments. The computers tested in the present paper are Gray C9016E/162564, Fujitsu VP2600/10 , Hitachi S-3800/480 and NEC SX-3/14R.