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dph-examples binaries don't use all CPUs

Hi, I've run dph-spectral-quicksort 3000000 +RTS -N6 of dph-examples-0.7.0.5 but it doesn't seem to use all the 6 hyperthreads. You can see the system monitor attached. Same goes for the other quickhull-vector example.

ghc --version The Glorious Glasgow Haskell Compilation System, version 7.6.3

llvm-config-3.0 --version

  1. 0

What am I possibly doing wrong?

Trac metadata
Trac field Value
Version 7.6.3
Type Bug
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Data Parallel Haskell
Test case
Differential revisions
BlockedBy
Related
Blocking
CC benl
Operating system
Architecture Unknown/Multiple
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