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Mellanox OFED for Linux User’s Manual
1.5.2-2.1.0-1.1.1000
Figure 4: Example QoS Deployment on
7.7
QoS Configuration Examples
The following are examples of QoS configuration for different cluster deployments. Each example
provides the QoS level assignment and their administration via OpenSM configuration files.
7.7.1 Typical HPC Example: MPI and Lustre
Assignment of QoS Levels
• MPI
• Separate from I/O load
• Min BW of 70%
• Storage Control (Lustre MDS)
• Low latency
• Storage Data (Lustre OST)
• Min BW 30%
Administration
• MPI is assigned an SL via the command line
host1# mpirun –sl 0
• OpenSM QoS policy file
Note:
In the following policy file example, replace OST* and MDS* with the real port
GUIDs.
qos-ulps
default
:0 # default SL (for MPI)
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