On Wednesday 28 September 2011 23:07:46 Bill Hart wrote: > The GMP gcd code is not only faster than that in MPIR, it is better. > It's much more cleanly coded. I think MPIR should switch to using the > GMP code. > > It's unfortunate that I spent so much time on taking Niels' code and > adding extended GCD and dealing with normalisation and so on, but > didn't have time to really polish it off.
Thats what grad students are for :) > Now it is kind of irrelevant > because the GMP code is so well-polished and MPIR can just use it. > Assuming the code doesn't use any new undocumented functions I can replace it for the next release of MPIR-2.5 due approx Sept 1st +-14 days Looks like its just some minor configury work. I think that gcdext is similar? > The only disadvantage to switching to their code is that there are no > longer two implementations. However, there is still a lot of shared > code either way, as both are developed from Niels' original code and > algorithm. So this "disadvantage" is not so great in my opinion. > > Bill. > > On 28 September 2011 20:51, Jeff Gilchrist <jeff.gilchr...@gmail.com> wrote: > > On Wed, Sep 28, 2011 at 3:46 PM, Jason <ja...@njkfrudils.plus.com> wrote: > >> I found a performance loss of mpir 2.4.0 compared to gmp 4.3.2. when > >> running gmp bench 0.2 gcd examples on a Core 2 Duo T6400, 2Ghz, 4GB Ram > >> Notebook with Ubuntu 11.04, 2.6.38-11-generic-pae i686, gcc 4.5.2. > > > > I'm not sure how GCD code compares in general, but could this be a > > tuning issues with a Core2 laptop? As in, they should tune the values > > instead of just using the default? > > > > Does the GCD code actually differ a lot between mpir and gmp now? And > > that is with the older gmp 4.3 branch as well. > > > > Jeff. > > > > -- > > You received this message because you are subscribed to the Google Groups > > "mpir-devel" group. To post to this group, send email to > > mpir-devel@googlegroups.com. To unsubscribe from this group, send email > > to mpir-devel+unsubscr...@googlegroups.com. For more options, visit this > > group at http://groups.google.com/group/mpir-devel?hl=en. -- You received this message because you are subscribed to the Google Groups "mpir-devel" group. To post to this group, send email to mpir-devel@googlegroups.com. To unsubscribe from this group, send email to mpir-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/mpir-devel?hl=en.
