https://blog.wongcw.com/2021/01/13/nvidia%e7%94%a8%e8%87%aa%e5%b7%b1gpu%e7%9b%b4%e6%8e%a5%e8%a8%aa%e5%95%8f%e6%8a%80%e8%a1%93%e5%9b%9e%e6%87%89amd%e7%9a%84smart-access-memory/