As other comments point out, performance mostly depends on correct implementation. Once the scripting overhead is under control, you're now measuring the perfo

As other comments point out, performance mostly depends on correct implementation. Once the scripting overhead is under control, you're now measuring the performance of your blas library. A much more useful comparison, although 2.5 years old: http://blog.nguyenvq.com/blog/2014/11/10/optimized-r-and-python-standard-blas-vs-atlas-vs-openblas-vs-mkl/ http://blog.nguyenvq.com/blog/2014/11/10/optimized-r-and-pyt...