Cache Sectoring for Energy and Latency Reduction
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Solution Overview
Problem
Existing cache memory systems do not efficiently manage data access and storage, leading to higher energy requirements and latency when accessing cache storage data units across different cache sectors.
Innovation Solution
The proposed solution involves configuring cache storage with multiple sectors, each comprising m cache storage data units, where m is an integer greater than 1. The control circuitry is designed to store data units with associated memory addresses in the same cache sector when there is a predetermined relationship between the memory addresses, thereby reducing energy requirements and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If cache storage is organized into multiple sectors with data units distributed across sectors, then cache storage capacity and data distribution are improved, but energy consumption and access latency increase when accessing data units across different sectors
Solution Approach 1:
The cache storage is divided into multiple sectors, each containing multiple data units. This segmentation allows the system to organize data in a way that improves capacity while managing energy consumption through sector-based access patterns. The control circuitry is configured to store data units with related memory addresses in the same sector, reducing cross-sector accesses and associated energy penalties.
Solution Approach 2:
Different sectors are designed with specific access characteristics. The control circuitry implements local quality by preferring to store data units with related memory addresses in the same sector, creating localized access patterns that reduce energy consumption. This local organization strategy optimizes energy usage based on data access relationships rather than uniform distribution.
2Productivity
If data units are distributed across multiple cache sectors, then data distribution and cache utilization are improved, but access latency increases when accessing data units in different sectors
Solution Approach 1:
The cache storage is segmented into multiple sectors to improve data distribution and utilization. The control circuitry manages this segmentation by intelligently assigning data units to sectors based on memory address relationships, ensuring that frequently accessed or related data units are co-located to minimize access latency.
Solution Approach 2:
The control circuitry performs preliminary actions by pre-determining the optimal sector assignment for data units based on their memory addresses. This preliminary organization of data units into sectors with related addresses reduces the need for subsequent cross-sector accesses, thereby minimizing access latency while maintaining high cache utilization.
3Use of energy by moving object
If control circuitry implements intelligent data unit selection and sector assignment, then energy efficiency and access performance are improved, but device complexity increases
Solution Approach 1:
The control circuitry is designed to perform multiple functions: it manages data unit selection, determines sector assignments, and optimizes storage locations based on memory address relationships. This multi-functionality consolidates control operations into a single circuitry block, achieving energy efficiency without proportionally increasing complexity.
Solution Approach 2:
The control circuitry utilizes parameter changes in memory addresses to determine optimal sector assignments. By analyzing address patterns and relationships, the circuitry dynamically adjusts data unit placement to optimize energy efficiency. This parameter-based approach provides intelligent control without requiring complex hardware structures.
Data Source
AI summary
Circuitry including cache storage and control circuitry is provided. The cache storage includes an array of random access memory storage elements, and is configured to store data in multiple cache sectors, each cache sector including a number of cache storage data units. The control circuitry is configured to control access to the cache storage including, for example, accessing the cache storage data units in the cache sectors. After accessing a cache storage data unit in a cache sector, the energy requirement and/or latency for the next access to a cache storage data unit in the same sector is lower than the energy requirement and/or latency for the next access to a cache storage data unit in a different same sector.