Dear Milan Thanks a lot for your suggestion with @code_typed!
regards Moritz On Saturday, 4 October 2014 19:48:24 UTC+2, Milan Bouchet-Valat wrote: > > Le samedi 04 octobre 2014 à 10:14 -0700, moritz braun a écrit : > > Hi > > I have looked there but > > I did not find it very helpful! > Well, could you be more specific? Have you followed all of the advice > given there without any results? > > Usually, unexpected memory allocation/garbage collection is due to type > instability. Without seeing your code, we cannot say much about whether > it's the case or not. You can try using @code_typed and check whether > all variables have a concrete type, or use TypeCheck.jl. Or search for > "code_typed" in the archives for previous discussions of how to use it. > > > Regards > > > > > regards > > > > > > Moritz > > > > On Saturday, 4 October 2014 19:12:17 UTC+2, Milan Bouchet-Valat wrote: > > Le samedi 04 octobre 2014 à 09:14 -0700, moritz braun a > > écrit : > > > Dear All > > > > > > > > > I am getting an output like this > > > > > > > > > elapsed time: 0.021992131 seconds (15705824 bytes > > allocated) > > > elapsed time: 0.021885618 seconds (15705824 bytes > > allocated) > > > elapsed time: 0.069756221 seconds (15705824 bytes allocated, > > 67.73% gc > > > time) > > > elapsed time: 0.022032602 seconds (15705824 bytes > > allocated) > > > elapsed time: 0.021981155 seconds (15705824 bytes > > allocated) > > > elapsed time: 0.070097864 seconds (15705824 bytes allocated, > > 67.79% gc > > > time) > > > elapsed time: 0.02215203 seconds (15705824 bytes allocated) > > > elapsed time: 0.022196102 seconds (15705824 bytes > > allocated) > > > elapsed time: 0.069812577 seconds (15705824 bytes allocated, > > 67.61% gc > > > time) > > > elapsed time: 0.022312715 seconds (15705824 bytes > > allocated) > > > elapsed time: 0.02169858 seconds (15705824 bytes allocated) > > > elapsed time: 0.064558698 seconds (15705824 bytes allocated, > > 65.64% gc > > > time) > > > elapsed time: 0.022568721 seconds (15705824 bytes > > allocated) > > > elapsed time: 0.021803525 seconds (15705824 bytes > > allocated) > > > elapsed time: 0.064626184 seconds (15705824 bytes allocated, > > 65.27% gc > > > time) > > > > > > > > > for some number crunching function that is called repeatedly > > with the > > > @time macro prepended to it. > > > Roughly every third call of the function gc takes place and > > the > > > average time to calculate the integral is increased by > > about 60%! > > > What in you experience are the typical things to avoid > > > if you want to avoid gc? > > Have a look here: > > http://docs.julialang.org/en/latest/manual/performance-tips/ > > > > > > You'll also find several threads covering this question on the > > mailing > > list. > > > > > > Regards > > > >
