That's very strange! The time-critical part of that computation is almost entirely in doing linear algebra with the coefficients of power series -- it bypasses most of the modular symbols code, which would be very inefficient in this example since the level is small and the weight large -- and oddly enough none of the tickets merged in 5.4.1 look in the least bit relevant! Can you maybe get a profiler output with %prun for both versions so we can see where the slowdown is?
Regards, David On 7 January 2013 13:18, Jeroen Demeyer <jdeme...@cage.ugent.be> wrote: > Actually, the slowdown is in 5.4 -> 5.4.1, which narrows it down quite a > lot: > http://boxen.math.washington.edu/home/release/sage-5.4.1/tickets.html > > > On 2013-01-07 12:24, Jeroen Demeyer wrote: > > I am running the command > > > > sage: time B = > > > ModularFormsRing(Gamma0(3)).modular_forms_of_weight(80).cuspidal_submodule().q_expansion_basis(prec=30) > > > > sage-5.4: 17.94 s > > sage-5.5: 56.28 s > > > > -- > You received this message because you are subscribed to the Google Groups > "sage-devel" group. > To post to this group, send email to sage-devel@googlegroups.com. > To unsubscribe from this group, send email to > sage-devel+unsubscr...@googlegroups.com. > Visit this group at http://groups.google.com/group/sage-devel?hl=en. > > > > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To post to this group, send email to sage-devel@googlegroups.com. To unsubscribe from this group, send email to sage-devel+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel?hl=en.
