Yep, I timed Magma and eMPIRe with Moller's patches doing integer gcd's only on sage.math. Here is the table:
Bit Size Magma eMPIRe 2000000 1.500s 26.915s 1000000 0.610s 5.794s 500000 0.240s 1.440s 250000 0.090s 0.312s 100000 0.020s 0.040s 50000 0.010s 0.012s Clearly the half-gcd is not working. Bill. 2008/11/5 Bill Hart <[EMAIL PROTECTED]>: > I plotted the poly gcd graph out to a higher bit size and now Magma is > clearly winning. > > The left most column is just integer GCD. Could it be that Magma > improves on Moller's gcd patches (I think I recall reading somewhere > that he originally wrote them for Magma), or did we do something wrong > when merging them? > > http://sage.math.washington.edu/home/wbhart/flint-trunk/graphing/gcd8.png > > Bill. > > 2008/11/1 Bill Hart <[EMAIL PROTECTED]>: >> Sorry, I simply mean you commit to the repo. I agree Mollers algorithm >> is clever and it should be pointed out that his paper on the topic is >> new work. He didn't just implement the half-BCD algorithm. >> >> Bill. >> >> On 01/11/2008, Jason Martin <[EMAIL PROTECTED]> wrote: >>> >>> Okay, I'll take a look at that when SVN is up again. >>> >>> Also, don't call them "Jason's Patches". That makes it sound like I >>> was clever... I wasn't. It's Moller's code, and his algorithm is very >>> very clever. >>> >>> --jason >>> >>> Jason Worth Martin >>> Asst. Professor of Mathematics >>> http://www.math.jmu.edu/~martin >>> >>> >>> >>> On Sat, Nov 1, 2008 at 9:55 AM, Bill Hart <[EMAIL PROTECTED]> >>> wrote: >>>> >>>> Jason, first bug report. When I build mpir with your patches (I have >>>> got the mpir repo working locally for me only - hopefully Michael will >>>> help me with the apache export so everyone else can get access again), >>>> I get warning messages in the compile on sage.math. >>>> >>>> gcd.c: In function 'mpz_rgcd': >>>> gcd.c:167: warning: implicit declaration of function 'mpn_rgcd' >>>> gcd.c: In function 'mpz_bgcd': >>>> gcd.c:171: warning: implicit declaration of function 'mpn_bgcd' >>>> gcd.c: In function 'mpz_sgcd': >>>> gcd.c:175: warning: implicit declaration of function 'mpn_sgcd' >>>> gcd.c: In function 'mpz_ngcd': >>>> gcd.c:179: warning: implicit declaration of function 'mpn_ngcd' >>>> >>>> It seems to build ok otherwise. >>>> >>>> Bill. >>>> >>>> 2008/11/1 Jason Martin <[EMAIL PROTECTED]>: >>>>> >>>>> On Fri, Oct 31, 2008 at 9:11 PM, mabshoff >>>>> <[EMAIL PROTECTED]> wrote: >>>>>> [snip] >>>>>> For me the highest priority item is the Moller's gcd code which has >>>>>> already been merged. What is the status of the code, i.e. performance, >>>>>> any known bugs, etc? >>>>>> >>>>>> Cheers, >>>>>> >>>>>> Michael >>>>> >>>>> Hi Michael, >>>>> >>>>> I haven't tested Moller's code beyond the standard make check test >>>>> suite (which passes all tests). I also haven't done any speed tests >>>>> other than the most rudimentary checks. So if anyone has some >>>>> suggestions for test cases, I'd be happy to try them out. Likewise, >>>>> if anyone has any bug reports for the gcd code, let me know and I'll >>>>> attempt to figure it out. >>>>> >>>>> >>>>> --jason >>>>> >>>>> > >>>>> >>>> >>>> > >>>> >>> >>> >>> >>> >> > --~--~---------~--~----~------------~-------~--~----~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/mpir-devel?hl=en -~----------~----~----~----~------~----~------~--~---
