I was wondering if making rg tacit would boost performance. Thanks to Raul for answering my unvoiced question.
I guess key, nub and amend are well optimized in the J interpreter. Jimmy PS Is roll also optimized for speed? If not should we look into ISAAC or other fast PRNGs? On Thu, Jul 27, 2017 at 5:23 AM, Raul Miller <rauldmil...@gmail.com> wrote: > Ah, i was testing it on too small of a data set. > > Thanks, > > -- > Raul > > > On Thu, Jul 27, 2017 at 4:33 AM, 'Mike Day' via Programming > <programm...@jsoftware.com> wrote: > > Jimmy's original rg outperforms both tock and the best of > > my various attempts at "new" for "larger" problems, eg > > > > 10 ts 'rg^:10000 #~400' > > 0.633403 38272 > > 10 ts 'tock^:10000 #~400' > > 0.751826 34816 > > 10 ts 'new^:10000 #~400' > > 0.793394 39424 > > > > NB. less good on smaller ones > > 30 ts 'rg^:10000 #~10' > > 0.10968 6784 > > 30 ts 'tock^:10000 #~10' > > 0.0662844 3840 > > 30 ts 'new^:10000 #~10' > > 0.0633482 3968 > > > > (Have you looked at Raul's results table, posted on 20/7?) > > > > The original problem asked us to consider 100 players, > > but, as usual, it's one thing to solve a small puzzle that you > > can get your head round, but very often a much more challenging > > requirement to get it to scale up. > > > > Those many Project Euler problems are worth looking at with > > scale of application in mind. ( //projecteuler.net ) > > > > Thanks, > > Mike > > > > > > > > On 27/07/2017 05:54, Raul Miller wrote: > >> > >> Oh, well, you could make it tacit. For example: > >> > >> rg=:(((#/.~@])`(~.@])`(0*[)} +/?@##)+-) * > >> > >> That does not speed it up, though. > >> > >> Anyways, good luck, > >> > > > > > > --- > > This email has been checked for viruses by Avast antivirus software. > > https://www.avast.com/antivirus > > > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
