Default value for numCapabilities?

[Dimitry Golubovsky]

Hi,

As a followup to the discussion [1] about the portable way to find the
number of CPUs/cores: how is the default value of numCapabilities [2]
set when +RTS -N is not on the command line?

Does GHC runtime figure out the number of cores itself, or it is by
default 1 unless specified on the command line?

Thanks.

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[1] http://haskell.org/pipermail/haskell-cafe/2010-April/076911.html
[2] http://hackage.haskell.org/packages/archive/base/latest/doc/html/GHC-Conc.html#v:numCapabilities

-- 
Dimitry Golubovsky

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