Default value for numCapabilities?

Bryan O'Sullivan bos at
Tue Apr 27 12:35:54 EDT 2010

On Tue, Apr 27, 2010 at 9:09 AM, Dimitry Golubovsky <golubovsky at>wrote:


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,

With 6.12.1 and newer, no "-N" argument implies 1 core, "-N*k*"
implies *k* cores,
and "-N" without an argument means "use all".
-------------- next part --------------
An HTML attachment was scrubbed...

More information about the Glasgow-haskell-users mailing list