Did you read through http://docs.julialang.org/en/release-0.3/manual/performance-tips/? You should memorize :-) the sections up through the Tools section; the rest you can consult as you discover you need them.
--Tim On Saturday, April 25, 2015 01:03:38 AM Ángel de Vicente wrote: > Hi, > > a complete Julia newbie here... I spent a couple of days learning the > syntax and main aspects of Julia, and since I heard many good things about > it, I decided to try a little program to see how it compares against the > other ones I regularly use: Fortran and Python. > > I wrote a minimal program to solve the 3D heat equation in a cube of > 100x100x100 points in the three languages and the time it takes to run in > each one is: > > Fortran: ~7s > Python: ~33s > Julia: ~80s > > The code runs for 1000 iterations, and I'm being nice to Julia, since the > programs in Fortran and Python write 100 HDF5 files with the complete 100^3 > data (every 10 iterations). > > I attach the code (and you can also get it at: http://pastebin.com/y5HnbWQ1) > > Am I doing something obviously wrong? Any suggestions on how to improve its > speed? > > Thanks a lot, > Ángel de Vicente
