3 new mac VMs + pending Mac VM...

Bruce ONeel beoneel at mindspring.com
Tue Oct 10 19:09:50 UTC 2000


Hi
  A G3 (aka 750) and a 603 are really very close to each other so a
special G3 optimization wouldn't likely help.  I don't know if a special
G4 optimization would help.  I don't have a good feel for what
altavec would do for squeak.

cheers

bruce
 

Aaron J Reichow <reic0024 at d.umn.edu> wrote:
> On Mon, 9 Oct 2000, John M McIntosh wrote:
> 
> > >Are these VMs optimized at all?  Does CodeWarrior (or MPW?) allows for any
> > >general optimization (ala gcc -On) or specific G3 or G4 (AltiVec)
> > >optimization?
> > 
> > Yes these VM's are optimized for 603 CPUs. I'll consider looking at 
> > the 750 optimization for the next version, but remember lots of 
> > schools have 604 or less machines, goodness even rows of SE/30's. So 
> > some more testing is required to decide which is the best Code 
> > Warrior optimization level *and* target CPU for the general class of 
> > machines that Squeak runs on, testing in Aug showed that some obvious 
> > choices did NOT produce the best results.
> 
> I understand that not everyone has a G3 or G4- but is there any way to
> release another build, perhaps optimized for G3 or G4?  It would be
> especially useful for us with G4 if CodeWarrior does any automagic AltiVec
> optimization.
> 
> Aaron





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