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  • Glasgow Haskell Compiler
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  • #6082
Closed
Open
Created May 07, 2012 by gchrupala@trac-gchrupala

Program compiled with 7.4.1 runs many times slower than compiled with 7.2.2

The morfette program (http://hackage.haskell.org/package/morfette), when compiled with 7.4.1 runs extremely slow: approx. 20x times slower than when compiled with 7.2.1.

To reproduce, install morfette using both compilers, and run it on the attached `sample' file.

morfette train sample output --iter-pos=10 --iter-lemma=3

I attach the output of the profiler for both compilers. It would seem the performance bug is related to code from the modules GramLab.Perceptron.Multiclass and GramLab.Perceptron.Vector

Trac metadata
Trac field Value
Version 7.4.1
Type Bug
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Compiler
Test case
Differential revisions
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