Crossbar Switch for Arbitrary Data Vector Lookup and Permutation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Processors face inefficiencies in performing direct lookups and permutations of data vectors, particularly when dealing with large tables or multiple tables, which can be time-consuming and memory-intensive.
Innovation Solution
A method and apparatus for updating an output data vector by identifying a data value vector and an address value vector, applying a conditional operator to each element in the address value vector, and determining whether to update the output data vector based on the operator's application, allowing for efficient retrieval and mapping of element data values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the processor searches multiple tables to find element data values for arbitrary size lookups, then the lookup capability is improved, but the processing time increases
Solution Approach 1:
The patent combines multiple table lookup operations into a single unified operation using a crossbar switch. Instead of searching multiple separate tables sequentially, the system merges the lookup functionality into one parallel operation where all required data values are retrieved simultaneously from a single data vector based on address values, eliminating the time penalty of multiple sequential table searches.
Solution Approach 2:
The system dynamically adapts to arbitrary lookup sizes by using a configurable crossbar switch that can handle variable numbers of address values and data vector elements. The crossbar dynamically reconfigures its connectivity based on the specific lookup requirements, allowing the same hardware structure to efficiently handle different lookup sizes without fixed limitations.
2Adaptability or versatility
If the processor performs N×N permute operations to permute N element data values, then the permutation function is achieved, but the processing time increases
Solution Approach 1:
The patent replaces the traditional sequential N×N permute operation mechanism with a parallel crossbar switch system. Instead of performing multiple sequential comparison and swap operations, the crossbar switch uses electrical signal routing to simultaneously permute all N elements in a single operation, substituting mechanical/sequential processing with electronic/parallel processing.
Solution Approach 2:
The crossbar switch dynamically reconfigures its internal connectivity pattern based on the permutation requirements specified by the address values. This dynamic reconfiguration allows the system to achieve any permutation pattern in constant time rather than requiring N×N sequential operations, adapting the data flow paths in real-time to match the desired output arrangement.
3Adaptability or versatility
If the processor uses a crossbar switch with configurable connectivity, then the flexibility for arbitrary lookups is improved, but the device complexity increases
Solution Approach 1:
The crossbar switch is designed as a universal data routing structure that can perform multiple functions: arbitrary table lookups, permutations, and other data reconfiguration tasks. This single multi-functional device replaces what would otherwise require multiple specialized components, achieving flexibility without proportionally increasing overall system complexity.
Solution Approach 2:
The crossbar switch achieves configurability by changing its connectivity parameters dynamically rather than requiring multiple fixed-configuration devices. By controlling the switch state parameters (which inputs connect to which outputs), the system achieves arbitrary lookup and permutation patterns using the same physical hardware, avoiding the complexity of multiple dedicated components.
Data Source
AI summary
An example method of updating an output data vector includes identifying a data value vector including element data values. The method also includes identifying an address value vector including a set of elements. The method further includes applying a conditional operator to each element of the set of elements in the address value vector. The method also includes for each element data value in the data value vector, determining whether to update an output data vector based on applying the conditional operator.