On Tue, 2005-02-08 at 05:57, Christophe TROESTLER wrote:


> type planet = {
>   mutable x : float;  mutable y : float;  mutable z : float;
>   mutable vx: float;  mutable vy: float;  mutable vz: float;
>   mass : float;
> }

Advice from old FORTRAN hacker:

This is a bad data structure for Ocaml.

Try using an unboxed float array of 7 times the length instead,
this will eliminate boxing, eliminate write barriers,
eliminate garbage collection, reduce memory requirements.


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