Memory Die Selection for Speed-Power Workload Balancing
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Solution Overview
Problem
Existing memory systems face inefficiencies when trying to balance competing performance demands, such as high-performance and low-power requirements, often leading to trade-offs or increased complexity and cost when using multiple memory devices or sacrificing performance in one area to meet another.
Innovation Solution
A single memory device is configured to prioritize individual memory dies based on their characteristics and current demands, allowing it to efficiently operate across multiple use cases by adjusting internal parameters such as frequency and voltage through mode register commands, without the need for separate devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple memory devices are used to meet competing performance demands, then performance requirements can be satisfied, but device complexity and cost increase
Solution Approach 1:
The patent combines multiple memory dies with different performance characteristics into a single memory device package. The device includes a first memory die with first characteristics and a second memory die with second characteristics, allowing the system to access different performance levels through a single device interface rather than managing multiple separate devices.
Solution Approach 2:
The memory device is designed to provide multiple performance levels within a single device. The device can operate in different modes (first performance level, second performance level, or intermediate levels) by selecting different memory dies or adjusting operational parameters, making it universally applicable to various performance requirements without needing different device configurations.
2Speed
If memory device operates at high performance level, then speed and bandwidth are improved, but power consumption increases
Solution Approach 1:
The memory device dynamically adjusts its operational characteristics by selecting different memory dies or modifying operational parameters based on current performance requirements. The device can transition between high-performance mode (faster access but higher power) and low-performance mode (slower access but lower power), allowing real-time optimization of the speed-power trade-off.
Solution Approach 2:
The patent changes operational parameters such as frequency and voltage to achieve different performance levels. By adjusting these parameters, the device can operate at high speed with acceptable power consumption or reduce power consumption at the expense of speed, providing flexibility to optimize for different operational conditions.
3Use of energy by moving object
If memory device operates at low power level, then energy consumption is reduced, but performance and speed decrease
Solution Approach 1:
The memory device dynamically switches between power-efficient mode and performance mode based on workload requirements. When low power consumption is prioritized, the device operates at reduced performance levels; when high throughput is needed, it transitions to higher performance modes, allowing optimization of the power-productivity trade-off.
Solution Approach 2:
The device adjusts operational parameters such as frequency and voltage to balance power consumption and productivity. By lowering these parameters, power consumption decreases but so does throughput; by increasing them, productivity improves but power consumption rises. This provides a controllable trade-off mechanism.
4Adaptability or versatility
If memory device supports multiple performance levels, then adaptability is improved, but internal complexity increases
Solution Approach 1:
The memory device is segmented into multiple memory dies, each with different performance characteristics. This segmentation allows the device to offer multiple performance levels by selecting which die to access, providing adaptability while keeping each individual die relatively simple in design.
Data Source
AI summary
Methods, systems, and devices for memory device operation are described. A register of a first memory die of multiple memory dies in a memory device may be configured to indicate that the first memory die has a first characteristic associated with a first set of performance criteria. Also, a register of a second memory die of the multiple memory dies may be configured to indicate that the second memory die has a second characteristic associated with a second set of performance criteria. Data received from a host device that is associated with the first set of performance criteria may be stored in the first memory die based on the first memory die having the first characteristic associated with the first set of performance criteria. In some examples, the registers store relative characteristics of the memory dies in relation to the other memory dies in the memory device.