On Mon, Jan 19, 2015 at 8:55 AM, Ralf Stephan <gtrw...@gmail.com> wrote:
> On Sunday, January 18, 2015 at 9:18:53 AM UTC+1, vdelecroix wrote:
>>
>> Your example can be reduced to polynomials
>>
>> sage: K.<sqrt3> = QuadraticField(3)
>> sage: R.<a1,a2,a3,a4,a5> = K[]
>> sage: timeit("(a1+a2+a3+a4+sqrt3*a5)^25")
>> 5 loops, best of 3: 81 ms per loop
>
>
> How do you get this speed? Here it's three orders of magnitude slower.What is "here"? When I try it on SageMathCloud it's almost 4 *times* slower, so "half of an order of magnitude": https://cloud.sagemath.com/projects/4a5f0542-5873-4eed-a85c-a18c706e8bcd/files/support/2015-01-19-expand-speed.sagews Since that expression is large, the cache size of the CPU might significantly impact performance. William > > BTW another way is to use polynomials over SR, for about the same > speed but without number field restrictions. > > > Regards, > > -- > You received this message because you are subscribed to the Google Groups > "sage-devel" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-devel+unsubscr...@googlegroups.com. > To post to this group, send email to sage-devel@googlegroups.com. > Visit this group at http://groups.google.com/group/sage-devel. > For more options, visit https://groups.google.com/d/optout. -- William Stein Professor of Mathematics University of Washington http://wstein.org -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
