A Parallel Revolution, Ready or Not
oPC, Server: Power Wall + Memory Wall = Brick Wall
ÞEnd of the way we built
microprocessors for last 40 years
ÞNew Moore’s Law is 2X processors (“cores”) per chip
every technology generation,
but same clock rate
¨“This shift toward increasing parallelism is not a
triumphant stride forward based on breakthroughs
…; instead, this … is
actually a retreat from even greater challenges that thwart efficient silicon implementation of
traditional solutions.”
The Parallel Computing
Landscape: A Berkeley View, Dec 2006
oSea change for HW & SW industries since changing the
model of programming and
debugging
¨New “Moore’s Law” is 2X
processors per chip every 2 years
¨Duo core, Quad core,
…
oGoal: Productive, Efficient, Correct Programming of 100+
cores & scale as
double cores every 2 years (!)
[Dave Patterson, UC Berkeley]