Processor Partition Packed Data Into Lanes
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Solution Overview
Problem
Current processors face inefficiencies in processing packed data, particularly in SIMD architectures, where existing instructions require multiple steps to split and align data elements, consuming resources and reducing performance.
Innovation Solution
The introduction of a 'partition into lanes' instruction that allows for the splitting of packed data into non-overlapping segments and alignment along lane boundaries within a single instruction, optimizing resource usage and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing instructions are used to split and align data elements, then data processing can be performed, but multiple steps are required which consume resources and reduce performance
Solution Approach 1:
The patent combines multiple operations (splitting packed data into segments and aligning along lane boundaries) into a single instruction called 'partition into lanes'. This merging of operations reduces the number of instructions required, decreases resource consumption, and improves processing efficiency while maintaining the necessary data manipulation capabilities.
2Productivity
If multiple load operations are used to process packed data, then data can be loaded and processed, but resource usage increases and performance decreases
Solution Approach 1:
The partition into lanes instruction consolidates multiple data manipulation operations that would otherwise require separate load and processing instructions. By performing segmentation and lane alignment in a single operation, the patent reduces the total number of load operations needed, thereby decreasing resource consumption and improving processing efficiency.
Data Source
AI summary
A processor includes a decode unit to decode an instruction that is to indicate a source packed data that is to include a plurality of adjoining data elements, a number of adjoining data elements, and a destination. The processor also includes an execution unit coupled with the decode unit. The execution unit, in response to the instruction, is to store a result packed data in the destination. The result packed data is to have a plurality of lanes that are each to store a different non-overlapping set of the indicated number of adjoining data elements aligned with a least significant end of the respective lane. The different non-overlapping sets of the indicated number of the adjoining data elements in adjoining lanes of the result packed data are to be separated from one another by at least one most significant data element position of the less significant lane of the adjoining lanes.