Ok, looking at the code is seems like you could probably get another 2x by switching to views rather than slices which will be the default sometime in the julia

Ok, looking at the code is seems like you could probably get another 2x by switching to views rather than slices which will be the default sometime in the julia 0.4 timeframe. That would probably put julia perforamance at 1.2-1.5x Fortran, which while there of course is always more optimizations to be done is at least pretty good.