-prof, -threaded, and -N

[Simon Marlow]

That's a leftover from when profiling didn't support -N, I'll fix it. 
Thanks!

Simon

On 03/06/2015 07:03, Lars Kuhtz wrote:
>  From https://github.com/ghc/ghc/blob/master/rts/RtsFlags.c#L1238 it seems that the behavior described in my email below is intended:
>
> ```
>
>                  if (rts_argv[arg][2] == '\0') {
> #if defined(PROFILING)
>                      RtsFlags.ParFlags.nNodes = 1;
> #else
>                      RtsFlags.ParFlags.nNodes = getNumberOfProcessors();
> #endif
> ```
>
> So, my question is: what is the reason for this difference between the profiling and the non-profiling case?
>
> Lars
>
>> On Jun 2, 2015, at 10:20 PM, Lars Kuhtz <haskell at kuhtz.eu> wrote:
>>
>> Hi,
>>
>> The behavior of the -N flag (without argument) with the profiling runtime seems inconsistent compared to the behavior without profiling. The following program
>>
>> ```
>> module Main where
>>
>> import GHC.Conc
>>
>> main :: IO ()
>> main = print numCapabilities
>> ```
>>
>> when compiled with `ghc -threaded -fforce-recomp Prof.hs` and run as `./Prof +RTS -N` prints `2` on my machine. When the same program is compiled with `ghc -threaded -fforce-recomp -prof Prof.hs` and executed as `./Prof +RTS -N` it prints `1`.
>>
>> When an argument is provided to `-N` (e.g. `./Prof +RTS -N2`) the profiling and non-profiling versions behave the same.
>>
>> I tested this with GHC-7.10.1 but I think that I already observed the same behavior with GHC-7.8.
>>
>> Is this inconsistency intended?
>>
>> Lars
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>
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