[vector] #32: Performance of concatMap and O2/Odph

vector vector at projects.haskell.org
Wed Oct 27 18:01:01 EDT 2010


#32: Performance of concatMap and O2/Odph
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Reporter:  choener   |        Owner:       
    Type:  defect    |       Status:  new  
Priority:  critical  |    Milestone:  0.7.1
 Version:  0.6       |   Resolution:       
Keywords:            |  
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Comment (by choener):

 My first answer was eaten by a timeout:

 In
 http://hackage.haskell.org/packages/archive/RNAFold/0.0.2.1/doc/html/src
 /BioInf-RNAFold-Functions.html please look for the function
 'interiorLoopDistances'. At the call site in 'largeInteriorLoopBase' we
 basically have the "bad" case.

 I'll have to recheck the core again with ghc7-rc1 if there still is an
 intermediate array being created.

 I will add benchmarks and other stuff in the next release on hackage (they
 are already in my darcs, which is not public due to severely embarassing
 check-in comments ;-)

-- 
Ticket URL: <http://trac.haskell.org/vector/ticket/32#comment:9>
vector <http://trac.haskell.org/vector>
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