I'll give it a go this evening
On Thursday 29 September 2011 11:13:44 Bill Hart wrote: > On 29 September 2011 06:35, Jason <ja...@njkfrudils.plus.com> wrote: > > 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. > > Should be. > > > I think that gcdext is similar? > > Yes, definitely. > > >> 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. -- 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.
