[GHC] #7850: Strangely high memory usage on optimized Ackermann function

GHC cvs-ghc at haskell.org
Wed Apr 24 11:14:36 CEST 2013


#7850: Strangely high memory usage on optimized Ackermann function
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    Reporter:  dolio             |       Owner:                         
        Type:  bug               |      Status:  new                    
    Priority:  normal            |   Milestone:                         
   Component:  Compiler          |     Version:  7.6.2                  
    Keywords:                    |          Os:  Unknown/Multiple       
Architecture:  Unknown/Multiple  |     Failure:  Runtime performance bug
  Difficulty:  Unknown           |    Testcase:                         
   Blockedby:                    |    Blocking:                         
     Related:                    |  
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Comment(by refold):

 Replying to [comment:24 awson]:
 > Most interesting is that while many notice `-kc1M` cure the problem they
 still insist it runs much slower than Ocaml version. But it is *NOT*!

 Interesting to hear about this difference between platforms. On Linux (and
 apparently OS X) it just eats all memory and does not finish.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7850#comment:25>
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