I'm currently working with the Xeon Phi and there you basically have to use Intel's C, C++ or Fortran compiler if you want good performance out of the box. Sinc

I'm currently working with the Xeon Phi and there you basically have to use Intel's C, C++ or Fortran compiler if you want good performance out of the box. Since Nim compiles to C I can write code that gets auto-vectorized and -optimized by the Intel compiler.