每个 CPU 有4 个 Die,每个 Die 有两个 CCX(2 core-Complexes),每个CCX最多有4core(例如7280/7285)共享一个L3 cache;每个Die有两个Memory Channel,每个CPU带有8个Memory Channel,并且每个Memory Channel最多支持2根Memory;
1 #lscpu 2 Architecture: x86_64 3 CPU op-mode(s): 32-bit, 64-bit 4 Byte Order: Little Endian 5 CPU(s): 256 6 On-line CPU(s) list: 0-255 7 Thread(s) per core: 2 8 Core(s) per socket: 64 9 Socket(s): 2 10 NUMA node(s): 4 11 Vendor ID: AuthenticAMD 12 CPU family: 25 13 Model: 1 14 Model name: AMD EPYC 7T83 64-Core Processor 15 Stepping: 1 16 CPU MHz: 2154.005 17 CPU max MHz: 2550.0000 18 CPU min MHz: 1500.0000 19 BogoMIPS: 5090.93 20 Virtualization: AMD-V 21 L1d cache: 32K 22 L1i cache: 32K 23 L2 cache: 512K 24 L3 cache: 32768K 25 NUMA node0 CPU(s): 0-31,128-159 26 NUMA node1 CPU(s): 32-63,160-191 27 NUMA node2 CPU(s): 64-95,192-223 28 NUMA node3 CPU(s): 96-127,224-255 29 #cat /sys/devices/system/cpu/cpu{0,1,8,16,30,31,32,128}/cache/index3/shared_cpu_map 30 00000000,00000000,00000000,000000ff,00000000,00000000,00000000,000000ff 31 00000000,00000000,00000000,000000ff,00000000,00000000,00000000,000000ff 32 00000000,00000000,00000000,0000ff00,00000000,00000000,00000000,0000ff00 33 00000000,00000000,00000000,00ff0000,00000000,00000000,00000000,00ff0000 34 00000000,00000000,00000000,ff000000,00000000,00000000,00000000,ff000000 35 00000000,00000000,00000000,ff000000,00000000,00000000,00000000,ff000000 36 00000000,00000000,000000ff,00000000,00000000,00000000,000000ff,00000000 37 00000000,00000000,00000000,000000ff,00000000,00000000,00000000,000000ff 38 #cat /sys/devices/system/cpu/cpu0/cache/index2/shared_cpu_map 39 00000000,00000000,00000000,00000001,00000000,00000000,00000000,00000001