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The Unified Data Architecture (UDA) of Teradata is an inclusive multisystem data analytics solution. A key challenge for query optimization under the UDA is to find optimal plans for queries that access data on heterogeneous remote data stores. The challenge comes primarily from the lack of statistics for data stored on remote systems. In this paper, we present techniques implemented in Teradata Database...
The Memory Access Dataflow execution model and hardware architecture combine principles of decoupled access and execution, dataflow computation, and event-condition-action rules to redevelop the main primitives of an out-of-order core in a power-efficient way that targets memory accesses that naturally occur in programs or get induced when some work is offloaded to an accelerator. Such a mechanism...
This paper identifies a new opportunity for improving the efficiency of a processor core: memory access phases of programs. These are dynamic regions of programs where most of the instructions are devoted to memory access or address computation. These occur naturally in programs because of workload properties, or when employing an in-core accelerator, we get induced phases where the code execution...
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