User Manual

spark - InfiniScale® III Firmware Burning ToolRev 1.50
Mellanox Technologies
50
Appendix D: In-Band Access to Multiple IB Subnets
In most cases, an adapter is connected to a single InfiniBand subnet. The LIDs (Infiniband Local
IDs) on this subnet are unique. In this state, the device access MADs are sent (to the target LID)
from the first active port on the first adapter on the machine.
In case that the different IB ports are connected to different IB subnets, source IB port on the local
host should be specified explicitly.
The device name would be in the format:
For example:
y On Linux: lid-3,mlx4_0,1
y On Windows: lid-3,0,1
Say we have the following setup:
H1 host has 2 adapters. Port 1 of the first adapter is conected to the InfiniScale III switch, and port
2 of the second adapter is connected to the InfiniScale IV switch. Since the 2 adapters on the H1
are not connected to the each other, there are 2 seperate IB subnets in this setup.
Subnet1 nodes: H1 IS3 switch and H2
Subnet2 nodes: H1 IS4 switch and H3
<any-string>lid-<lid-number>[,source adapter name][,source IB port number]
Host H1
24
25
26 27
28
21
2019
18 22
23
11 12
13 1487
654
3
21
910
17
16
15
29
30
32
33
34 35
31
1234
5
678
Host H3
Host H2
InfiniScale IV
InfiniScale III
HCA 0
HCA 1