Re: how to speed up some lisp code?

From: John H Palmieri (palmieri_at_math.washington.edu)
Date: 02/19/04 

Date: Thu, 19 Feb 2004 14:50:57 -0800

On Feb 19 2004, Richard Fateman <rfateman@sbcglobal.net> wrote:

> There is nothing in Macsyma to do these operations.
> Although you call them polynomials, the polynomials
> in Macsyma are not the same.
> .....
>
> After profiling, you should have an idea where the
> most time is being used. The bottlenecks should be
> considered carefully...

I'll look into profiling the code.

> Are you compiling for highest speed, least checking?

Yes.

> My guess is that you should not be using alists which
> are of length in the thousands, for
> anything, but sorting, probably in vectors.
>
> unsorted collections, if you can use them instead,
> can be stored very neatly in hashtables.

I'll think about whether I can get away with this. My initial
response is that I probably do need things to be sorted.

> Good luck. 

-- 
J. H. Palmieri
Dept of Mathematics, Box 354350    mailto:palmieri@math.washington.edu
University of Washington           http://www.math.washington.edu/~palmieri/
Seattle, WA 98195-4350