It would also be useful to know how you are timing your code. Cheers, Kevin
On Friday, July 11, 2014, Keith Campbell <[email protected]> wrote: > Implementation details can make a very big difference in the performance > of Julia code. You can see some considerations at > http://docs.julialang.org/en/latest/manual/performance-tips/. > > Also, if you post your test code, perhaps as a Gist, that will make it > easier for folks to provide useful feedback. > cheers, > Keith > > On Friday, July 11, 2014 12:28:15 PM UTC-4, David C Cohen wrote: >> >> Hi, >> >> I understand that Julia and R nnls do not use the same algorithm. A >> 400x300 problem on my machine takes about 0.02 s on R nnls, and about 2 s >> on Julia nnls. >> >> The documentations on nnls is rather poor: >> >> ?nnls >> >> nnls (generic function with 2 methods) >> >> >> Am I missing something here, or is this implementation is meant to be slow? >> >>
