The future of the APU

links: http://developer.amd.com/documentation/presentations/assets/A4MMC2011_Keynote.pdf

 

 

overall:

apu的特点是:

 

cpu和gpu共享unified memory,和xbox360的方式很像。

也是APU的优势核心,突破了通过pci来做cpu,gpu通信所带来的束缚。

但是对于游戏开发来说,大部分情况下render把GPU耗光是没有压力的,所以也就不太需要说GPU辅助CPU运算。

但是通用计算领域的确是比较有意义的。

 

觉得本文的亮点是细节,可以做一个很好的硬件知识复习

details:

  • gpu cores optimized for latency hiding
  • ALU calculation
  • store thread state and allow fast thread switching
  • cpu cores optimzied for 
  • branch prediction 
  • out of order execution(logic style calculation)
  • caching for reducing latency to memory, efficient instruction prefetching, deep pipelines
  • amd gpu designed to hide latency in 2 ways
  • issue instructio over multiple cycles
  • interleave instruction from multithreads
  • think in multithread&multicores

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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