Memory Channel Slice Power Collapse for Bandwidth Scaling
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Solution Overview
Problem
Memory systems face challenges with scalability and power consumption due to large workloads, which can reduce performance and limit flexibility, especially in applications requiring high bandwidth.
Innovation Solution
Implementing a memory system with multiple slices, where each slice can be independently power collapsed to adjust power consumption based on operating conditions, allowing for dynamic bandwidth adjustment and reduced power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If memory systems operate in high bandwidth mode to handle large workloads, then productivity is improved, but power consumption increases
Solution Approach 1:
The memory channel is divided into multiple independent slices (first slice, second slice, etc.), each capable of independent power control. This segmentation allows the system to activate only the necessary number of slices based on workload demands, thereby maintaining high bandwidth when needed while reducing power consumption during lower demand periods.
Solution Approach 2:
The system dynamically adjusts the number of active memory slices based on detected power collapse trigger conditions. The power control circuitry monitors system state and transitions slices between active and power-collapse modes, enabling adaptive bandwidth adjustment that matches actual workload requirements and optimizes power efficiency.
2Use of energy by moving object
If memory systems reduce power consumption to improve energy efficiency, then use of energy is improved, but productivity decreases
Solution Approach 1:
The system changes operational parameters by transitioning memory slices between different power modes (active mode with full bandwidth, power-collapse mode with reduced bandwidth). This parameter change allows the system to optimize power consumption while maintaining the capability to restore full bandwidth performance when workload demands increase.
Data Source
AI summary
An apparatus includes a plurality of memory channels to a memory. The plurality of memory channels include a first slice and at least a second slice that is distinct from the first slice. The apparatus further includes power control circuitry coupled to the plurality of memory channels. The power control circuitry is configured to adjust, in accordance with a power collapse trigger condition associated with the first slice, operation of the first slice from a first mode of operation to a second mode of operation independently of the second slice. The first mode of operation is associated with a first power consumption level that is greater than a second power consumption level associated with the second mode of operation.