我的系统有 2 个 infiniband 设备，其中之一的两个端口均已打开。
$> ibstatus
Infiniband device 'mlx4_0' port 1 status:
default gid: fe80:0000:0000:0000:0002:c903:000f:0a9f
base lid: 0x22
sm lid: 0x1
state: 4: ACTIVE
phys state: 5: LinkUp
rate: 20 Gb/sec (4X DDR)
link_layer: IB
Infiniband device 'mlx4_0' port 2 status:
default gid: fe80:0000:0000:0000:0002:c903:000f:0aa0
base lid: 0x23
sm lid: 0x1
state: 4: ACTIVE
phys state: 5: LinkUp
rate: 20 Gb/sec (4X DDR)
link_layer: IB
Infiniband device 'mlx4_1' port 1 status:
default gid: fe80:0000:0000:0000:0002:c903:000f:0a6b
base lid: 0x0
sm lid: 0x0 …