Re: Parallel Make

[Noel Yap]

I agree that a lone -j shouldn't default to infinity for practical reasons.  OTOH, a default of 1 would make the flag meaningless and a default of 2 seems unclean to me.  IMHO, -j shouldn't have a default at all.  Further, for those that like the infinite 
behaviour, I think allowing --jobs=infinity would help curb such an appetite a little.

Noel

Ken Smith wrote:

> I read through the man page for GNU make and it looks to me like the 
> following two lines should be equivalent.
>
> c1 $ gmake A=B -j 4
> c2 $ gmake -j 4 A=B
>
> However, apparently c2 limits itself to 4 parallel jobs while c1 is 
> equivalent to -j without arguments and spawns a limitless number of jobs.
>
> Additionally, I would like to request that -j without arguments default 
> to something more reasonable than -j infinity.  I have seen novice users 
> just throw -j without arguments on to the command line hoping for a 
> speedier build only to irritate other people on the build machine when 
> every process on the system crawls to a halt.  I think -j without 
> arguments should mean -j 1 or -j 2.
>
> Ken Smith
>
>
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