On the SideFX forums I have added some information/videos & software on how to accelerate Python with Houdini in Windows & Linux:
A custom node/plugin which speeds up execution of Python nodes in SOP-Context by a factor of up to 2 in certain conditions (e.g. Deformer, Attribute manipulation): Custom Python node for SOP context
Using Numba (Python JIT-Compiler) in Houdini (Windows & Linux): How to use Numba with Houdini
An optimzed/accelerated Numpy Python module (with OpenBLAS) for Houdini on Windows: Optimized Numpy python module for Houdini
Hope it helps some people when using Python with Houdini.
Any feedback welcome.
Cheers