number-crunching
n. Computations of a numerical nature, esp.
those that make extensive use of floating-point numbers. The only
thing Fortrash is good for. This term is in widespread
informal use outside hackerdom and even in mainstream slang, but
has additional hackish connotations: namely, that the computations
are mindless and involve massive use of brute force. This is
not always evil, esp. if it involves ray tracing or fractals
or some other use that makes pretty pictures, esp. if such
pictures can be used as wallpaper. See also crunch.