Difference between revisions of "Benchmarks Game/Parallel"

Revision as of 01:57, 3 March 2009

Quad-core enabled parallel Haskell benchmark entries, for the 64 bit quad core shootout.

Check the GC stats with +RTS -sstderr -RTS, if that number if over 5%, use -HxxxM to set a better default heap size. (Note *this is probably not permitted by the "intial allocation area rule" for the binary-trees benchmark).
Use N capabilities for SMP, e.g. +RTS -N4 -RTS, for the quad core.
Take the single threaded, fast programs and parallise them
Parallel strategies are the lightest way to add SMP capabilities.
Contact dons or sbahra on #haskell for access to a quad or eight-way benchmark machine, before uploading.
See if you can use the new parallel GC to good effect: no entries currently do.

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 == Advice ==
-* Check the GC stats with +RTS -sstderr -RTS, if that number if over 5%, use -AxxxM to set a better default heap size.
+* Check the GC stats with +RTS -sstderr -RTS, if that number if over 5%, use -HxxxM to set a better default heap size. (Note *this is probably not permitted by the "intial allocation area rule" for the binary-trees benchmark).
-* Use N+1 capabilities for SMP, e.g. +RTS -N5 -RTS, for the quad core.
+* Use N capabilities for SMP, e.g. +RTS -N4 -RTS, for the quad core.
 * Take the single threaded, fast programs and parallise them
 * Parallel strategies are the lightest way to add SMP capabilities.