Hi David,
I found that GHC is O(n^2) in terms of the number of lines in a do
block, so by splitting up a huge 1000 line do block in to 10 x 100
line do blocks, I was able to get a massive compile time boost.
Perhaps you might have similar luck with let's.
If you do, report a bug!
Thanks
Neil
On 1/12/07, David Morse
I have a machine-generated source-code file that brings my computer to its knees with ghc-6.6. After an hour or so of rummaging around, ghc dies with: "ghc-6.6: out of memory (requested 1048576 bytes)". The linux machine has 1gb RAM and 2gb swap, and I don't have access to a better one.
The file is of the form ------------------------------------------- module foo (a,b) where
(a,b) = let ...10,300 bindings... ; in ([a1,a2,a3...a300],[b1,b2,b3...b10000]) --------------------------------------------
Is there some simple syntactic refactoring I can do to make this work? E.g. busting the local bindings out of the "let" and into to the global level?
The bindings are intertwined, but I could (with some effort) reorder them so that b5000 would only reference b5001...b10000 and never b1...b4999. _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users