On Fri, 20 Oct 2006 18:08:42 -0700, Bill Hart <[EMAIL PROTECTED]> wrote:
> I can't get MAGMA to go that fast.
>
> I timed it doing 1000 multiplies of degree 255 polynomials with
> coefficients of 1000 bits. It took 15 seconds or thereabouts.
>
> I timed a similar thing with NTL and it took 17 seconds. They seem
> comparable to me.
>
> The only thing I didn't do is amortize the cost of finding the 1000 bit
> random numbers in MAGMA, whereas I did in NTL (it's harder to do in
> MAGMA). But I timed this separately in MAGMA and it was only about 10%
> of the total time.
>
> At any rate, I don't see anything like the factor of five that was
> spoken of.
>
> Magma may be quite a bit faster than NTL for sparse polynomials. Were
> the polynomials that you tested sparse, David Harvey?

One other potential issue is that I upgraded MAGMA on sage.math from
version 2.12-20 to version 2.13-5 since when David did his tests.
Maybe MAGMA got way slower?!

By the way, you can run the older version by typing

/usr/local/magma2.12/magma

William

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