Le mercredi 4 mai 2016 23:00:23 UTC+2, john_perry_usm a écrit : > > > Unfortunately Roman doesn't mention on that page whether he used > Singular's std() or dstd(). The numbers look vaguely std()ish to me (i.e., > when I compute the GB of Cyclic-8 using std(), it takes about 40 seconds; > homogenized takes a few seconds longer, but my machine is slower than the > 3.2GHz he advertised). If I'm right, the comparison is inaccurate. > > The precise timings are inaccurate : giac timings have improved, mgb have probably also, for singular I don't know. But this does not change the global picture: singular is slow for "dense" computations compared to the 3 others while being fast for very sparse problems, probably because the f4 algorithm is not the best choice if there are few pairs to be reduced simultaneously.
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