If you don't have deprecation warnings I would suspect some change in 0.4 has introduced type instabilities. If you are using typed concatenations you could be hit by https://github.com/JuliaLang/julia/issues/13254.
Den torsdag 22 oktober 2015 kl. 23:03:00 UTC+2 skrev Kris De Meyer: > > Are there any general style guidelines for moving code from 0.3.11 to > 0.4.0? Running the unit and functionality tests for a module that I > developed under 0.3.11 in 0.4, I experience a 500 times slowdown of blocks > of code that I time with @time. > > Can't even imagine where I have to start looking, and find it > flabbergasting that perfectly valid julia code under 0.3.11 (not generating > a single warning) can show such a performance degradation under 0.4.0. > > Anyone seen anything similar? Is there some fundamental difference in how > code is JIT-compiled under 0.4.0? > > Thanks, > > Kris > > > >