Wednesday, September 14, 2011
Review: Amdahl's Law in the Multicore Era
This short paper talks about application of Amdahl's Law in the Multicore Era. According to the Amdahl's formula, there are multiple ways on speeding up your program. First and most obvious, you can run the serial part faster. Secondly, you could parallelize more of your code (the f term in the equation). There are 3 types of multicore chips that this paper looks at; symmetric, asymmetric & dynamic multicore chips but mostly, asymmetric & dynamic multicore chips are more preferred because they offer more potential speedups that are much greater than symmetric multicore chips. Also, the paper demonstrated that it's more efficient costly & computationally to have heterogeneous, asymmetric systems.
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