Dynamic Memory Buffer Management for Thermal Stability

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Solution Overview

Problem

Memory devices face challenges in dynamically adjusting buffer sizes based on operational conditions, such as die temperatures and data sizes, which can lead to inefficiencies and errors, particularly during temperature fluctuations.

Innovation Solution

A method is implemented where memory devices monitor die temperatures and data sizes, determine a target buffer size, and adjust the current buffer size accordingly, using logged historical data to optimize buffer allocation and prevent errors during temperature changes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If buffer size is increased to handle temperature fluctuations, then reliability is improved, but device complexity increases

Engineering Contradiction:
Improveerror prevention during temperature changesVSAvoidbuffer management complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The buffer size is made dynamic rather than static, allowing it to automatically adjust based on real-time temperature conditions and workload characteristics. The system transitions between different buffer size states (e.g., first buffer size for normal operation, second buffer size for temperature transitions) based on monitored parameters, resolving the contradiction by making the buffer adaptive to environmental conditions without requiring complex manual intervention.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the buffer size parameter in response to temperature parameter changes. When temperature transitions are detected (e.g., during thermal expansion or cooling), the buffer size is adjusted from a first size to a second size to accommodate the changing operational conditions, thereby improving reliability during temperature fluctuations without permanently increasing device complexity.

Inventive Principle:
Principle #35Parameter changes

2Productivity

If buffer size is dynamically adjusted based on temperature and data size, then productivity is improved, but device complexity increases

Engineering Contradiction:
Improveoperational efficiencyVSAvoidbuffer adjustment mechanism
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The system implements a feedback mechanism where buffer size adjustments are based on monitored temperature and workload data. The controller continuously observes operational parameters and automatically adjusts buffer size accordingly, improving productivity by optimizing buffer usage for current conditions while keeping the adjustment logic integrated within the existing controller to minimize additional complexity.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The memory device performs self-adjustment of buffer size based on its own monitored temperature and workload characteristics. The controller autonomously determines when to switch between different buffer sizes without external intervention, improving operational efficiency while avoiding the complexity of external control systems.

Inventive Principle:
Principle #25Self-service

3Reliability

If buffer size is optimized for specific conditions, then reliability is improved, but adaptability worsens

Engineering Contradiction:
Improveerror reduction during temperature transitionsVSAvoidbuffer size flexibility
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The buffer size is made dynamic with multiple configurable states rather than a single fixed value. The system can switch between a first buffer size and a second buffer size based on operational conditions, maintaining reliability during specific temperature transitions while preserving adaptability through the ability to adjust buffer size across different scenarios.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The buffer management system serves multiple functions: it optimizes for temperature transitions, handles normal operational workloads, and adapts to different data sizes. By making the buffer size adjustable and condition-dependent, the system achieves universal applicability across various operational scenarios rather than being specialized for a single condition.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS11989445B2Automatic operating mode management for memory using workload profile data
Publication Date: 2024.05.21 MICRON TECHNOLOGY INC
  • US11989445B2 patent drawing
  • US11989445B2 patent drawing
  • US11989445B2 patent drawing

AI summary

The disclosed embodiments relate to logging activities of memory devices and adjusting the operation of a controller based on the activities. In one embodiment, a method comprises monitoring, by a memory device, die temperatures and data sizes of commands issued to the memory device; determining, by the memory device, a target size for a buffer based on the die temperatures and data sizes; and adjusting, by the memory device, a current size of the buffer to meet the target size.