Hello Dimitry, Tuesday, April 27, 2010, 8:09:49 PM, you wrote: a few months ago i asked SimonM about using all cores by default, but he said that it dramatically reduces performance in some cases
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.
--------------------------- [1] http://haskell.org/pipermail/haskell-cafe/2010-April/076911.html [2] http://hackage.haskell.org/packages/archive/base/latest/doc/html/GHC-Conc.ht...
-- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com