Re: multiple cpu's

[Benoit SIGOURE]

On Aug 12, 2007, at 11:09 PM, Ralf Wildenhues wrote:

> Hello Jim,
>
> * Jim Meyering wrote on Sun, Aug 12, 2007 at 12:46:20PM CEST:
> > On a related note, it'd sure be nice if "make -j4 check" would run  
> > its
> > tests in parallel.  Especially on an SMP system, and/or when some
> > tests sleep for a few (interminable :-) seconds.
> >
> > Of course, this might not be trivial, especially trying to keep
> > the resulting Makefile.in portable.  However, even if it means
> > I'd need to use a special option to generate a GNU-make-only
> > Makefile.in, I'd happily use the result for day to day work.
>
> IIRC, Akim Demaille posted a patch a while ago on an automake list for
> this, GNU make-specific.  I don't recall how much work was left to do,
> but on my list it's a bit on the far end.

Yep:
http://lists.gnu.org/archive/html/automake/2007-02/msg00015.html
The whole idea is to have one input file per test (say a .chk file)  
that produces a .log file.  We can then benefit from the parallelism  
of make with implicit rules (exactly like for .c -> .o).

The file has slightly evolved since then but I can post an updated  
version if someone is interested.

--
Benoit Sigoure aka Tsuna
EPITA Research and Development Laboratory

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