[Beowulf] Moores Law is dying

Greg Lindahl lindahl at pbm.com
Wed Apr 15 14:14:21 EDT 2009


On Wed, Apr 15, 2009 at 06:27:20AM -0400, Lawrence Stewart wrote:

> OT - I once was writing programs to generate programs with very large  
> basic blocks, maybe 50K instructions.  It is a Big Mistake to try gcc  
> -O3 on these, the optimizer goes into brain freeze for 15 minutes or 
> so...

Yeah, compiling much larger generated programs often involves flipping
some compiler switches.

And there was considerable angst in the SPECcpu community when the new
benchmark suite took a lot of memory to IPA in most compilers, a lot
more than the suite took to run.

-- greg

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