这是两个Linux VTune功能测试程序。serialpi是单线程求π值的应用，而threadpi是根据处理器最佳并行数设置的多线程求π值的应用，这两个程序可以演示VTune演示多线程并行的性能改善。-This is the Linux VTune functional test procedures. serialpi is single-threaded seek the value of π the applications threadpi is the application based on multi-threaded processor parallel number set and the value of π, the two procedures can be demonstrated the VTune demonstrates multi-threaded parallel performance improvements.