On 7 November 2010 15:19, Vivian McPhail <haskell.vivian.mcph...@gmail.com>wrote:
> > Message: 29 >> Date: Sat, 6 Nov 2010 13:22:10 +0100 >> From: Roel van Dijk <vandijk.r...@gmail.com> >> Subject: [Haskell-cafe] hmatrix's fitModel function crashes ghc(i) >> To: Haskell Caf? <haskell-cafe@haskell.org> >> Message-ID: >> <aanlktim5egsl_bz+ruv-=d-z3db65sc8o=ckqltcy...@mail.gmail.com> >> Content-Type: text/plain; charset=UTF-8 >> >> Hello, >> >> I would like to use hmatrix to do some function fitting with the >> Levenberg Marquardt algorithm. As an example I would like to fit the >> very simple function "f x = a*x + b" on some data points. The problem >> is that executing the 'fitModel' function crashes GHC(i) with a >> segmentation fault. This makes debugging difficult. Can anyone spot >> what I am doing wrong? Given all the lists of Double's it seems very >> easy to make an error regarding the number of arguments with the model >> function or the derivative. >> > > I think the problem is with linking static data in GHCi on x86_64. > > Hope this helps. I seem to recall there might be a ghc trac ticket related > to this but a quick search turned up nothing. > > Here's the ticket: http://hackage.haskell.org/trac/ghc/ticket/781 They aim to fix the problem (with fPIC) by ghc 7.2. Cheers, Vivian
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