It's also useful to note that the disk cache might do a surprisingly good job at caching those .hi files for you. That, and a lot of people (like me!) use SSDs, where the parallel compilation takes the vast majority of time.
I'd be really excited to see parallel ghc --make. By the way, totally unrelated, but why does cabal support -j when cabal-dev doesn't? - Clark On Wednesday, May 15, 2013, Niklas Hambüchen wrote: > 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. > > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org <javascript:;> > http://www.haskell.org/mailman/listinfo/haskell-cafe >
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