Opened 7 years ago

Last modified 5 years ago

#8023 new bug

dph-examples binaries don't use all CPUs

Reported by: Lethalman Owned by:
Priority: normal Milestone:
Component: Data Parallel Haskell Version: 7.6.3
Keywords: Cc: benl
Operating System: Linux Architecture: x86_64 (amd64)
Type of failure: Runtime performance bug Test Case:
Blocked By: #7330 Blocking:
Related Tickets: Differential Rev(s):
Wiki Page:


Hi, I've run dph-spectral-quicksort 3000000 +RTS -N6 of dph-examples- 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 3.0

What am I possibly doing wrong?

Attachments (1)

52.png (52.2 KB) - added by Lethalman 7 years ago.
System monitor showing only CPU being used

Download all attachments as: .zip

Change History (3)

Changed 7 years ago by Lethalman

Attachment: 52.png added

System monitor showing only CPU being used

comment:1 Changed 7 years ago by Lethalman

Architecture: Unknown/Multiplex86_64 (amd64)

comment:2 Changed 5 years ago by thomie

difficulty: Unknown

Maybe a DPH guru can answer this question?

Note: See TracTickets for help on using tickets.