15 May
2013
15 May
'13
9:30 p.m.
Hello Thomas, thanks for your detailed answer.
Could be worthwhile re-evaluating the patch.
Does your patch still apply somewhat cleanly? And does it address all the caches in your list already or only some subset of them?
To have a multi-process ghc --make you don't need thread-safety. However, without sharing the caches -- in particular the interface file caches -- the time to read data from the disk may outweigh any advantages from parallel execution.
That might be a big step already - I've never seen a project where I'd care about parallel compilation that is not totally CPU-bound.