Parameter

Shared Parameters

The parameter server provides several data structures for the shared parameters.

• KVVector assumes the keys are ordered and stores the data in an array. It’s fast for sequential accessing, but may be slow for inserting new element. It is often used by workers because this data structure is convenient for linear algebra operations.
• KVMap uses unordered_map to store the data. It is often used by servers when the keys change frequently.
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