wasserman.louis:
> How might I go about finding out how many processors are available in a
> concurrent GHC program? I have some code I'd like to parallelize, but I
> don't want to spawn a separate (even lightweight) thread for each of
> thousands of minor tasks.
>
> Louis Wasserman
> [1][email protected]
You set the number of OS threads with +RTS -N at runtime. This value
is accessible from Haskell via:
GHC.Conc:
-- | the value passed to the @+RTS -N@ flag. This is the number of
-- Haskell threads that can run truly simultaneously at any given
-- time, and is typically set to the number of physical CPU cores on
-- the machine.
numCapabilities :: Int
-- Don
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