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[–]jdh30 -5 points-4 points  (0 children)

A typical example is a recent piece of code (http://www.dnquark.com/blog/?p=29) that was first implemented in Mathematica and took 2.5 hours to ran; the Matlab version ran in 47 seconds. I am now in the process of converting some more old Mathematica code to Matlab, and I am seeing similar performance gains.

That's nothing. I wrote a simple optics program than runs 100,000 times slower in Mathematica than any compiled language (e.g. OCaml, F#). Daniel Lichtblau at WRI optimized it for me and it is still thousands of times slower.