Re: [Haskell-cafe] Cabal -j
wasserman.louis: > What, if anything, stands in the way of parallelizing Cabal installs, make -j > style? Parallelizing ghc --make http://vimeo.com/6572966 ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Cabal -j
On 4 June 2010 00:05, Don Stewart wrote: > wasserman.louis: >> What, if anything, stands in the way of parallelizing Cabal installs, make -j >> style? > > Parallelizing ghc --make > > http://vimeo.com/6572966 Unless Louis meant what's stopping cabal-install from installing dependancies in parallel instead of serial? In which case; nothing? ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Cabal -j
chrisdone: > On 4 June 2010 00:05, Don Stewart wrote: > > wasserman.louis: > >> What, if anything, stands in the way of parallelizing Cabal installs, make > >> -j > >> style? > > > > Parallelizing ghc --make > > > > http://vimeo.com/6572966 > > Unless Louis meant what's stopping cabal-install from installing > dependancies in parallel instead of serial? In which case; nothing? > Oh, sorry, dependencies (package level parallelism) vs modules (ghc --make level parallelism) -- don ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Cabal -j
Heh, I'm interested in both, but I'm feeling like I needed a new project, and I thought this might make a good one =) Louis Wasserman wasserman.lo...@gmail.com http://profiles.google.com/wasserman.louis On Thu, Jun 3, 2010 at 5:42 PM, Don Stewart wrote: > chrisdone: > > On 4 June 2010 00:05, Don Stewart wrote: > > > wasserman.louis: > > >> What, if anything, stands in the way of parallelizing Cabal installs, > make -j > > >> style? > > > > > > Parallelizing ghc --make > > > > > >http://vimeo.com/6572966 > > > > Unless Louis meant what's stopping cabal-install from installing > > dependancies in parallel instead of serial? In which case; nothing? > > > > Oh, sorry, dependencies (package level parallelism) vs modules (ghc --make > level parallelism) > > -- don > ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Cabal -j
Excerpts from Christopher Done's message of Fri Jun 04 00:39:23 +0200 2010: > On 4 June 2010 00:05, Don Stewart wrote: > > wasserman.louis: > >> What, if anything, stands in the way of parallelizing Cabal installs, make > >> -j > >> style? > > > > Parallelizing ghc --make > > > > http://vimeo.com/6572966 > > Unless Louis meant what's stopping cabal-install from installing > dependancies in parallel instead of serial? In which case; nothing? I think cabal-install compiles Setup without starting ghc or such (I may be wrong). This would be fixable. If you want to volunteer try hack-nix. It's based on the Nix distribution system which provides this feature natively. You can even ask others computers to help building dependencies quite easily. Downside: At the moment it will pull all depndencies (including kernel headers and glibc..) if you install it on a common linux system. Marc Weber ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Cabal -j
On Thu, Jun 3, 2010 at 3:05 PM, Don Stewart wrote: > wasserman.louis: >> What, if anything, stands in the way of parallelizing Cabal installs, make -j >> style? > > Parallelizing ghc --make > > http://vimeo.com/6572966 Something I wondered from watching that talk, rather than trying to make ghc run concurrently internally, can we just have --make, when faced with multiple possibilities, pick the first one without a 'ModuleName.working' file, create such a working file, and then go to? Then you can run 'ghc --make X.hs &; ghc --make X.hs &; ...'. In fact, isn't that what make -j already does? I could try it with the old style 'ghc -M' and pure makefile, but it turns out to be a lot of work to figure out what packages to include and tangle out the right .o files and whatnot, work that --make does for me. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Cabal -j
Hmmm. Now that I've had a chance to rewatch the video, I am enlightened. Nevertheless, I will confess that I wouldn't mind the idea of just doing an external parallelism wrapper, running multiple sessions of GHC rather than making GHC internally parallel. Hm. Louis Wasserman wasserman.lo...@gmail.com http://profiles.google.com/wasserman.louis On Thu, Jun 3, 2010 at 11:57 PM, Evan Laforge wrote: > > Something I wondered from watching that talk, rather than trying to > make ghc run concurrently internally, can we just have --make, when > faced with multiple possibilities, pick the first one without a > 'ModuleName.working' file, create such a working file, and then go to? > > Then you can run 'ghc --make X.hs &; ghc --make X.hs &; ...'. > > In fact, isn't that what make -j already does? I could try it with > the old style 'ghc -M' and pure makefile, but it turns out to be a lot > of work to figure out what packages to include and tangle out the > right .o files and whatnot, work that --make does for me. > ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
