为什么 2 插槽服务器显示 PCIe 位置,而 4 插槽服务器不显示(如何在 4 插槽服务器上找到 PCIe 位置)?

为什么 2 插槽服务器显示 PCIe 位置,而 4 插槽服务器不显示(如何在 4 插槽服务器上找到 PCIe 位置)?

我有两台服务器:

当我运行hwloc-ls2 插槽服务器时,我看到每个 NUMANode 上都有 HostBridge 的 PCIe 拓扑,但 4 插槽服务器显示包而不是 NUMANode,并且所有 HostBridge 都列在底部。此外,lscpu在 2 插槽服务器上显示 2 个 NUMA 节点,但在 4 插槽服务器上仅显示 1 个 NUMA 节点。

如何辨别哪个 PCIe 设备连接到 4 插槽服务器上的哪个插槽?

当我hwloc-ls在 2 插槽服务器上运行时,我得到以下信息:

Machine (63GB total)
  NUMANode L#0 (P#0 31GB)
    Package L#0 + L3 L#0 (20MB)
      L2 L#0 (256KB) + L1d L#0 (32KB) + L1i L#0 (32KB) + Core L#0
        PU L#0 (P#0)
        PU L#1 (P#16)
        ...
    HostBridge L#0
      PCIBridge
        PCI 17d3:1880
          Block(Disk) L#0 "sda"
  NUMANode L#1 (P#1 31GB)
    Package L#1 + L3 L#1 (20MB)
      L2 L#8 (256KB) + L1d L#8 (32KB) + L1i L#8 (32KB) + Core L#8
        PU L#16 (P#8)
        PU L#17 (P#24)
        ...
    HostBridge L#6
      PCIBridge
        PCI 8086:10fb
          Net L#8 "eth0"

...当我在 4 插槽服务器上运行它时,我得到以下信息:

Machine (126GB)
  Package L#0 + L3 L#0 (38MB)
    L2 L#0 (256KB) + L1d L#0 (32KB) + L1i L#0 (32KB) + Core L#0
      PU L#0 (P#0)
      PU L#1 (P#60)
      ...
  Package L#1 + L3 L#1 (38MB)
    L2 L#2 (256KB) + L1d L#2 (32KB) + L1i L#2 (32KB) + Core L#2
      PU L#4 (P#15)
      PU L#5 (P#75)
      ...
  Package L#2 + L3 L#2 (38MB)
    L2 L#4 (256KB) + L1d L#4 (32KB) + L1i L#4 (32KB) + Core L#4
      PU L#7 (P#30)
      PU L#8 (P#90)
      ...
  Package L#3 + L3 L#3 (38MB)
    L2 L#6 (256KB) + L1d L#6 (32KB) + L1i L#6 (32KB) + Core L#6
      PU L#10 (P#45)
      PU L#11 (P#105)
      ...
  Misc(MemoryModule)
  ...
  HostBridge L#5
    PCIBridge
      PCI 8086:10c9
        Net L#6 "ens8f0"

2 插座lscpu

Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                32
On-line CPU(s) list:   0-31
Thread(s) per core:    2
Core(s) per socket:    8
Socket(s):             2
NUMA node(s):          2
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 62
Model name:            Intel(R) Xeon(R) CPU E5-2450 v2 @ 2.50GHz
Stepping:              4
CPU MHz:               2804.841
CPU max MHz:           3300.0000
CPU min MHz:           1200.0000
BogoMIPS:              5000.25
Virtualization:        VT-x
L1d cache:             32K
L1i cache:             32K
L2 cache:              256K
L3 cache:              20480K
NUMA node0 CPU(s):     0-7,16-23
NUMA node1 CPU(s):     8-15,24-31

4 插座lscpu

Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                120
On-line CPU(s) list:   0-119
Thread(s) per core:    2
Core(s) per socket:    15
Socket(s):             4
NUMA node(s):          1
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 62
Model name:            Intel(R) Xeon(R) CPU E7-4890 v2 @ 2.80GHz
Stepping:              7
CPU MHz:               1199.953
CPU max MHz:           3400.0000
CPU min MHz:           1200.0000
BogoMIPS:              5600.25
Virtualization:        VT-x
L1d cache:             32K
L1i cache:             32K
L2 cache:              256K
L3 cache:              38400K
NUMA node0 CPU(s):     0-119

答案1

我看到了一个赞成票,并记得我们解决了这个问题,所以这至少是我们的答案超微 X10QBI主板(请参阅该页面链接的主板手册)。

  • 第 94 页:内存交错:“使用此功能设置 DIMM 内存交错模式 [模式]。选项有NUMA(1 路)节点交错; 2路节点交错; 4路节点交错; 8路Interleaving,互插;和汽车。”

    • 如果它交错,那么它会看到一个平坦的内存模型,所以将其设置为NUMA (1-way) Node Interleave(或者可能Auto
  • 第 95 页:设备标记:

    • 使能够Device Tagging。这会用每个设备的 NUMA 位置来标记(我认为)。

...现在我们看到正确的 NUMA 分配。此外,还hwloc-ls显示了 PCIe 设备的物理连接位置:

]# lscpu
Architecture:        x86_64
CPU op-mode(s):      32-bit, 64-bit
Byte Order:          Little Endian
CPU(s):              120
On-line CPU(s) list: 0-119
Thread(s) per core:  2
Core(s) per socket:  15
Socket(s):           4
NUMA node(s):        4
Vendor ID:           GenuineIntel
BIOS Vendor ID:      Intel
CPU family:          6
Model:               62
Model name:          Intel(R) Xeon(R) CPU E7-4890 v2 @ 2.80GHz
BIOS Model name:     Intel(R) Xeon(R) CPU E7-4890 v2 @ 2.80GHz
Stepping:            7
CPU MHz:             3400.000
CPU max MHz:         3400.0000
CPU min MHz:         1200.0000
BogoMIPS:            5599.89
Virtualization:      VT-x
L1d cache:           32K
L1i cache:           32K
L2 cache:            256K
L3 cache:            38400K
NUMA node0 CPU(s):   0-14,60-74
NUMA node1 CPU(s):   15-29,75-89
NUMA node2 CPU(s):   30-44,90-104
NUMA node3 CPU(s):   45-59,105-119
...

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