Ok, now it shows me eight cores.  So, I've passed arguments incorrectly, what is the correct way to do this?

(Also, `$(stack exec which ghci) +RTS -N8` does not work with fish shell which I'm using by default, but I tested your suggestion in bash)

пн, 24 авг. 2015 г. в 14:37, Michael Snoyman <michael@snoyman.com>:

It looks like you're sending the RTS options to `stack` in the first one, not to ghci itself. What's the result with `$(stack exec which ghci) +RTS -N8`?

On Mon, Aug 24, 2015 at 12:32 PM, Geraldus <heraldhoi@gmail.com> wrote:

I have OS X Yosemite 10.10.4.  There are two bundles of GHC (from ghcformacosx.github.io): 7.10.1 and 7.10.2.  The latter always shows me one core when running `getNumCapabilities` action:

GHC 7.10.2

> stack ghci +RTS -N8

Using resolver: lts-3.0 from global config file: /Users/arthurfayzrakhmanov/.stack/global/stack.yaml

Configuring GHCi with the following packages: 

GHCi, version 7.10.2: http://www.haskell.org/ghc/  :? for help

Prelude> :m +Control.Concurrent

Prelude Control.Concurrent> getNumCapabilities 

1

GHC 7.10.1

> /Applications/ghc-7.10.1.app/Contents/bin/ghci +RTS -N8

GHCi, version 7.10.1: http://www.haskell.org/ghc/  :? for help

Prelude> :m +Control.Concurrent

Prelude Control.Concurrent> getNumCapabilities

8

It looks like a 7.10.2 bug, can some one confirm that?

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