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Currently, the policies control the preference of some constructs over others during the selection algorithm.
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UDSP Structure
A UDSP consists of two parts:
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Once a UDSP policy is instantiated on an LNet construct, the UDSP action becomes part of the LNet construct. When the selection algorithm is running on per message send case, the policy action takes effect. To give a more concrete example, let's say the admin applies a policy which gives the highest Selection Priority for o2ib0 local network. This policy action translates to the local network selection priority field set to 0, which is the highest priority. When the selection algorithm runs it checks the priorities of all local networks and selects o2ib0 since it has the highest Selection priorityPriority.
Policy Actions integrate with the rest of the Selection Criteria used by the selection algorithm. For more details on the selection algorithm, please refer to the initial Multi-Rail HLD.
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UDSP Rules Types
Outlined below are the UDSP rule types
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The diagram shows the integration of the UDSP provided actions in the logical flow of the selection algorithm.
User Interface
Command Line Syntax
Below is the command like syntax for managing UDSPs
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