(1) Sage also does FFT via the GSL. I guess they didn't try that, but I would imaginge they would be fast since they are in C.
(2) I'm not sure what a toolbox actually *is*. Something like an optional package with a nice gui interface? (3) Related to this thread, I just got an email from Cesar (from Mexico, the grad student working on the RingCode class). He was at a big math meeting and told people one reason why he prefers Sage over Matlab is because in Matlab (and I quote from Cesar): "In MatLab: var1 = 2^10000000 var2 = 2^10000000 + 1 var1 == var2 The result of the last line will be True!!!!" Also Cesar says Matlab will often invert without warning a singular matrix. So, I think it would be cool if the reviewer also changed that the programs worked *correctly*. Apologies for the scarcasm:-) On Sat, Oct 25, 2008 at 2:05 AM, Minh Nguyen <[EMAIL PROTECTED]> wrote: > <snip> > A recurring theme throughout tests on the above five systems was the > issue of algorithmic performance, as measured "by computing the singular > value decomposition (SVD) and fast Fourier transform (FFT) of a 500x500 > real-valued matrix 100 times and calculating the average and standard > deviation of those 100 trials" (page 30). And on page 31, we have the > following performance evaluation: > > <quote> > Performance is one area where Matlab had difficulty maintaining a > commanding lead. For the SVD test --- an important matrix decomposition > in many statistical and numerical algorithms --- Matlab performance was > slightly more than 20% better than Scilab and Octave. The surprise was > that the Numpy algorithm used from within Sage was on average over 250% > faster than Matlab. It's not included in this Roundup, but this > performance difference indicates that the Numpy library for Python > deserves a closer look when performance matters. Matlab comes out the > winner in the fast Fourier transform. > </quote> > <snip> > > > -- > Regards > Minh Van Nguyen > > Web: http://nguyenminh2.googlepages.com > Blog: http://mvngu.wordpress.com > > > > --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-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/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
