This is awesome. I'd like to try to recreate some of the evaluations for the multicore IO manager paper on that 40 core system at backspace. How can I get access to this? I'll jump on IRC - maybe it is easier to chat in realtime.
On Mon, Oct 13, 2014 at 5:33 PM, Austin Seipp <aus...@well-typed.com> wrote: > For the record, I talked to Ben earlier on IRC, and I can provide him > with a machine to do intense benchmarks of the new I/O manager. > > Also, if any other developers (like Andreas, Johan, Bryan, etc) in > this space want a big machine to test it on, I can probably equip you > with one (or several). Since Rackspace is so gracious to us, we can > immediately allocate high-powered, physical (i.e. not Xen, but real > machines) machines to do high-scale testing on.[1] > > In any case, it's not hard to do and only takes a few minutes, so Ben: > let me know. (I've thought it would be neat to implement a leasing > system somehow, where a developer could lease a few machines for a > short period of time, at which point they expire and a background job > cleans them up.) > > [1] You can find the hardware specs here; GHC benchmarking is probably > best suited for the "OnMetal I/O" type, which has 40 cores, 2x PCIe > flash and 128GB of RAM - > http://www.rackspace.com/cloud/servers/onmetal/ > > On Mon, Oct 13, 2014 at 2:05 PM, Ben Gamari <bgamari.f...@gmail.com> > wrote: > > Ben Gamari <bgamari.f...@gmail.com> writes: > > > >> Andreas Voellmy <andreas.voel...@gmail.com> writes: > >> > >>> On Sat, Oct 11, 2014 at 12:17 PM, Ben Gamari <bgamari.f...@gmail.com> > wrote: > >>> > >>> Ah... so this is not useful to you. I guess we could add `loop` to > >>> GHC.Event's export list. On the other hand, I like your LifeTime > proposal > >>> better and then no one needs `loop`, so let's try this first. > >>> > >> I have a first cut of this here [1]. It compiles but would be I shocked > >> if it ran. All of the pieces are there but I need to change > >> EventLifetime to a more efficient encoding (there's no reason why it > >> needs to be more than an Int). > >> > > As it turns out the patch seems to get through the testsuite after a few > > minor fixes. > > > > What other tests can I subject this to? I'm afraid I don't have the > > access to any machine even close to the size of those that the original > > event manager was tested on so checking for performance regressions will > > be difficult. > > > > Cheers, > > > > - Ben > > > > _______________________________________________ > > ghc-devs mailing list > > ghc-devs@haskell.org > > http://www.haskell.org/mailman/listinfo/ghc-devs > > > > > > -- > Regards, > > Austin Seipp, Haskell Consultant > Well-Typed LLP, http://www.well-typed.com/ >
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