Why does the Numpy community provide 32bit binaries installer but not 64bit?

Question

The Numpy community provides 32bit binaries installer here

but no 64bit binaries installer.

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If they were no binaries installer at all, it would be coherent, and I would understand it as a deliberate choice meaning "You should compile and build it yourself." But this is not true, as 32bit binaries installers are provided.

Is there a technical reason why 64bit binaries installers for Numpy are not officially available?

PS: I know http://www.lfd.uci.edu/~gohlke/pythonlibs/ but here is only Numpy-MKL, and I'm not sure if this works on every machine because of Intel MKL.

Answer 1

According to WinPython creator :

There is no decent open-source (free) Fortran compiler for the Windows 64bit platform. As a consequence, it's impossible to build NumPy on this platform using only free and open-source tools. That's why there is no official Windows 64bit binaries for this library .

The only ready-to-use installers available out there are the ones you have mentioned ,they use Intel Fortran compiler and these are clearly unofficial binaries.

refer to discussion regarding this matter .

Edit: If you are concerned about performance of the MKL version , both testing and real world experience show that Intel compilers and MKL usually provide the best performance even on AMD systems.