AMP Configuration Impact on Function Execution | Teradata Vantage - AMP Configuration Impact on Function Execution - Teradata Vantage

Teradata® VantageCloud Lake

Deployment
VantageCloud
Edition
Lake
Product
Teradata Vantage
Published
January 2023
Language
English (United States)
Last Update
2024-02-17
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The execution strategy of some analytic functions for the PARTITION BY ANY syntax varies with the number of AMPs in the system, and the function output may vary across different configurations.

The output is correct in all cases and does not impact the quality of results for large datasets.

If a degraded quality is observed in the results for small data sets, then you may restrict to one or few AMPs by carefully selecting the primary index to improve the quality of results.

The following functions whose output may vary by AMP configuration:
  • TD_GLM
  • TD_DecisionForest