I now fixed the bug which was causing the fft tuning code to crash on some machines. In theory it could also cause a crash in the fft on those machines. But in practice the FFT is never used in that range. So it's a theoretical bug only, in theory.
Bill. On 20 March 2014 16:33, Bill Hart <goodwillh...@googlemail.com> wrote: > I have now added all the tuning code we need for the release. > > I just need to fix the fft tuning code on systems on which it still > crashes. > > Bill. > > > On 20 March 2014 00:54, Bill Hart <goodwillh...@googlemail.com> wrote: > >> I meant to say, "Today I finally fixed mpn_mulmod_2expp1 to use >> the Nussbaumer trick in the FFT region". >> >> >> On 20 March 2014 00:44, Bill Hart <goodwillh...@googlemail.com> wrote: >> >>> Today I finally fixed mpn_mulmod_2expp1 to use the FFT wraparound trick >>> in the FFT region. >>> >>> As mpn_mulmod_bnm1 uses this function, this means that GMP-ECM will now >>> be able to use MPIR more efficiently. >>> >>> I think that much of our mulmod_2expp1 and mulmod_bnm1 code needs >>> rewriting, but this can wait until someone can do it properly. >>> >>> I also added some tuning for the new division functions. I'm not >>> convinced it is picking the right thresholds, based on my own timings. But >>> it's coded correctly, so there's nothing I can do about it. At least the >>> division code doesn't seem to slow down with the new tuning values. >>> >>> Tomorrow I will add some tuning functions for the new GMP combinatorics >>> functions that we added. I will also fix a bug in the fft tuning code which >>> causes it to crash on some systems. >>> >>> This should hopefully complete all the new features for MPIR 2.7 and we >>> can move on to closing all the open tickets for the release. >>> >>> I have essentially until the end of next week to do as much as I can, >>> after which I will have to work weekends if it isn't done. >>> >>> After tomorrow we will need to retune MPIR on as many platforms as we >>> can. Help with that would be appreciated. >>> >>> By the way, after May 31st we'll lose access to about half the machines >>> we build on, due to one of the build farms closing down. So if anyone has >>> access to lots of heterogeneous hardware with linux, git and recent gcc on >>> it, please let us know. >>> >>> Bill. >>> >> >> > -- You received this message because you are subscribed to the Google Groups "mpir-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to mpir-devel+unsubscr...@googlegroups.com. To post to this group, send email to mpir-devel@googlegroups.com. Visit this group at http://groups.google.com/group/mpir-devel. For more options, visit https://groups.google.com/d/optout.
