Parallel kernel compilation on a single machine

The kernel compilation process (or more accurately, the fitting and routing parts of the process) are very memory-intensive and if your machine runs out of memory during the process, compilation WILL fail.

Expect to need 20-25 GB per compilation for Stratix V and 35-40 GB per compilation for Arria 10. Altera's official recommendations can be found here (http://dl.altera.com/requirements/17.0/).

The main way to speed up the compilation process is to obtain faster processor (more cores won't help for one compilation since the process is mostly single- or dual-threaded) and faster memory, or more cores and bigger memory to allow for more parallel compilations.