Introduction

Makefile 定义了一系列的规则来指定，哪些文件需要先编译，哪些文件需要后编译，哪些文件需要重新编译，甚至进行更复杂的操作。

Makefile 带来的好处 —— “自动化编译”。写好后，只需要一个make命令，整个工程完全自动编译。 - make 是一个命令工具，一个解释 Makefile 中指令的命令工具 - Delphi： make - Visual C++: nmake - Linux: GNU make

Course Main Theme

1. Designing and writing parallel programs —— scale! (规模)
   • Parallel thing
     1. Decomposing(分解) the work into pieces that can safely be performed in parallel
     2. Assigning work to processors
     3. Managing communication/synchronization(同步) between the processors so that it does not limit speedup
2. Parallel computer hardware implemtation: how parallel computers work
   • Mechanisms(机制) used to implement abstractions effeciently
     1. Performance(性能) characteristics of implementations
     2. Design trade-offs: performance vs. convenience vs. cost
3. Thinking about efficiency
   • Fast $\neq$ Efficient
   • Your program runs faster on a parallel computer, it deos not mean it is using the hardware efficiently.