Re: [Haskell-cafe] GHCi runtime linker: fatal error (was Installing REPA)
Ben Lippmeier b...@ouroborus.net wrote: I pushed Repa 3.1 to Hackage on the weekend. It has a *much* cleaner API. I can't recommend continuing to use Repa 2. You will just run into all the problems that are now fixed in Repa 3. How do you do things like 'force delayed array to manifest array' in Repa 3? The function 'force' seems to have disappeared. -- the lyf so short, the craft so long to lerne. -- Chaucer. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] GHCi runtime linker: fatal error (was Installing REPA)
Ben Lippmeier b...@ouroborus.net wrote: I pushed Repa 3.1 to Hackage on the weekend. It has a *much* cleaner API. I can't recommend continuing to use Repa 2. You will just run into all the problems that are now fixed in Repa 3. I was going to ask about the wiki page, and saw that you've posted a note there. Nice! Now only if someone would update it... :) http://www.haskell.org/haskellwiki/Numeric_Haskell:_A_Repa_Tutorial Is the differences between Repa 2 and Repa 3 documented somewhere? I'm having trouble with running examples from the Repa paper... Thanks, Sajith. -- the lyf so short, the craft so long to lerne. -- Chaucer. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] Google Summer of Code: a NUMA wishlist!
Dear Cafe, It's last minute-ish to bring this up (in my part of the world it's still March 25), but graduate students are famously a busy and lazy lot. :) I study at Indiana University Bloomington, and I wish to propose^W rush in this proposal and solicit feedback, mentors, etc while I can. Since student application deadline is April 6, I figure we can beat this into a real proposal's shape by then. This probably also falls on the naive and ambitious side of things, and I might not even know what I'm talking about, but let's see! That's the idea of proposal, yes? Broadly, idea is to improve support for NUMA systems. Specifically: -- Real physical processor affinity with forkOn [1]. Can we fire all CPUs if we want to? (Currently, the number passed to forkOn is interpreted as number modulo the value returned by getNumCapabilities [2]). -- Also kind of associated with the above: when launching processes, we might want to specify a list of CPUs rather than the number of CPUs. Say, a -N [0,1,3] flag rather than -N 3 flag. This shall enable us to gawk at real pretty htop [3] output. -- From a very recent discussion on parallel-haskell [4], we learn that RTS' NUMA support could be improved. The hypothesis is that allocating nurseries per Capability might be a better plan than using global pool. We might borrow/steal ideas from hwloc [5] for this. -- Finally, a logging/monitoring infrastructure to verify assumptions and determine if/how local work stays. (I would like to acknowledge my fellow conspirators and leave them unnamed, lest they shall be embarrassed by my... naivete.) Thanks, Sajith. [1] http://www.haskell.org/ghc/docs/latest/html/libraries/base/Control-Concurrent.html#v:forkOn [2] http://www.haskell.org/ghc/docs/latest/html/libraries/base/Control-Concurrent.html#v:getNumCapabilities [3] http://htop.sourceforge.net/ [4] http://groups.google.com/group/parallel-haskell/browse_thread/thread/7ec1ebc73dde8bbd [5] http://www.open-mpi.org/projects/hwloc/ -- the lyf so short, the craft so long to lerne. -- Chaucer. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] We *have* been accepted into the Google Summer of Code
Heinrich Apfelmus apfel...@quantentunnel.de wrote: Just for reference, here the direct link that is now online: http://www.google-melange.com/gsoc/org/google/gsoc2012/haskell How up-to-date/relevant are the projects in the ideas page? http://hackage.haskell.org/trac/summer-of-code/report/1 (For example, I believe build multiple Cabal packages in parallel is a successful project from last year's summer of code.) Also, why is Mentor: not-accepted for many (all?) of them? -- the lyf so short, the craft so long to lerne. -- Chaucer. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
