On 2013-01-25, Volker Braun <[email protected]> wrote: > ------=_Part_681_2503209.1359120527992 > Content-Type: text/plain; charset=ISO-8859-1 > > On Friday, January 25, 2013 1:11:15 PM UTC, Dima Pasechnik wrote: > >> If I read what Volker noticed right, in this code the bulk of time is >> spent computing the order of a group of 2x2 matrices by converting it >> into a permutation group, via GAP. And the order of the group is never >> more than 342 here. A naive algorithm, enumerating the >> elements of the matrix group directly, would speed this up hugely, IMHO. > > > Or port the matrix groups to libgap... no, that's won't help, as that's what GAP does internally! you can do profiling of GAP on your example: http://www.gap-system.org/Manuals/doc/ref/chap7.html#X7FDF923D7D2937A1 and see what happens... (just use ProfileGlobalFunctions(True) before running the thing to be profiled, and ProfileGlobalFunctions() to see the result)
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