"Therefore, if you wish to argue that parallel programming will remain as difficult as it is currently perceived by many to be, it is you who bears the burden of proof, keeping in mind the many centuries of counter-examples in a variety of fields of endeavor."
"the primary goals of parallel pro- gramming are performance, productivity, and gener- ality."
"This book is intended primarily for developers working near the bottom of the stack, where performance and generality are paramount concerns."
"It is important to keep in mind that parallelism is but one way to improve performance. Other well- known approaches include the following, in roughly increasing order of difficulty: 1. Run multiple instances of a sequential applica- tion. 2. Construct the application to make use of exist- ing paral"
"Most people have an intuitive understanding that passing messages between systems is considerably more expensive than performing simple calcula- tions within the confines of a single system. How- ever, it is not always so clear that communicat- ing among threads within the confines of a single share"
"shared-memory parallel programs must normally deal with no obstacle worse than a cache miss, while a distributed parallel program will typically incur the larger network communication latencies."
"3.3.3 Light, Not Electrons Although the speed of light would be a hard limit, the fact is that semiconductor devices are limited by the speed of electrons rather than that of light, given that electrons in semiconductor materials move at between 3% and 30% of the speed of light in a vacuum."
作者简介
Paul E. McKenney is the core contributor of Linux kernel .