GMP used during 3 and a half years to solve MIT's LCS35

[Laurent Desnogues]

On Fri, May 3, 2019 at 10:53 AM Bernard Fabrot <bfabrot at gmail.com> wrote:
>
> And I take it the speedup also comes, in addition from the :
>
> 64 bit : wow the speedup!
> clock speed
> better GMP algos
>
> from the fact that some instructions are using less cycles than they used
> to. I mean: even after the jump from 32 bit to 64 bit: then some 64 bit
> instructions used less cycles with new CPU generations?

Torbjörn has written a very useful document about instruction timing:

https://gmplib.org/~tege/x86-timing.pdf

It goes back to P4 not P3.

Laurent

> TYVM for that testing: it's already very interesting data!
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