love for hpc?

[Johan Tibell]

Aside: cabal supports hpc and puts the various files (e.g. .tix) in
separate directories to avoid problems like these.


On Thu, Nov 7, 2013 at 8:55 AM, Roman Cheplyaka <roma at ro-che.info> wrote:

> So Evan's prediction was accurate ;-)
>
> * Carter Schonwald <carter.schonwald at gmail.com> [2013-11-07 00:29:24-0500]
> > Evan,
> >
> > if  you want to get involved in working on HPC, go for it! theres many
> many
> > pieces of ghc that need more proactive ownership.
> >
> > i should probably use HPC a bit as i start getting my numerical libs out,
> > and i'm sure future me will appreciate current you working on making it
> > better
> >
> > -Carter
> >
> >
> > On Thu, Nov 7, 2013 at 12:03 AM, Evan Laforge <qdunkan at gmail.com> wrote:
> >
> > > Is anyone out there using HPC?  It seems like it was gotten into a
> > > more or less working if not ideal state, and then abandoned.
> > >
> > > Things I've noticed lately:
> > >
> > > The GHC runtime just quits on the spot if there's already a tix file.
> > > This bit me when I was parallelizing tests.  It's also completely
> > > unsafe when run concurrently, mostly it just overwrites the file,
> > > sometimes it quits.  Sure to cause headaches for someone trying to
> > > parallelize tests.
> > >
> > > You can't change the name of the output tix file, so I worked around
> > > by hardlinking the binary to a bunch of new ones, and then doing 'hpc
> > > sum' on the results.
> > >
> > > The hpc command is super slow.  It might have to do with it doing its
> > > parsing with Prelude's 'read', and it certainly doesn't help the error
> > > msgs.
> > >
> > > And the whole thing is generally minimally documented.
> > >
> > > I can already predict the answer will be "yes, HPC could use some
> > > love, roll up your sleeves and welcome!"  It does look like it could
> > > be improved a lot with just a bit of effort, but that would be a yak
> > > too far for me, at the moment.  I'm presently just curious if anyone
> > > else out there is using it, and if they feel like it could do with a
> > > bit of polishing.
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> > >
>
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