1
From the results it looks like that the execution time is comparable to python and it is pretty distant from the top.
http://github.com/andreaferretti/kmeans/blob/master/results Results ------- nim (0.11.3) 148 ms java (1.7.0_76) 183 ms .... python (2.7.6) 10632 ms pharo (3) 11170 ms swift (2.2-dev) 11391 ms perl (5.20.2) 15680 ms rubinius (2.5.2) 20878 ms ruby (1.9.3p484) 24819 ms