Clock Frequency Control for Latency-Sensitive IC Workloads
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Solution Overview
Problem
Current processes for adjusting clock signal frequencies in integrated circuits (ICs) are dependent on data bandwidth and do not account for latency, failing to optimize performance for latency-sensitive workloads with lower bandwidths.
Innovation Solution
The method involves determining latency and activation parameters from workload data, applying different weights to these parameters, and adjusting clock signal frequencies based on their relative importance to optimize power consumption and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If clock signal frequency is increased for high bandwidth workloads, then power consumption increases, but performance for latency-sensitive workloads deteriorates
Solution Approach 1:
The patent implements dynamic clock signal frequency adjustment based on real-time workload characteristics. The system continuously monitors workload parameters and dynamically changes clock frequency to match actual processing needs, transitioning from static to adaptive frequency control that optimizes power consumption while maintaining performance for latency-sensitive operations
Solution Approach 2:
The system changes the frequency parameter of the clock signal based on detected workload characteristics. By adjusting this critical parameter in response to workload type (bandwidth-intensive vs. latency-sensitive), the system achieves optimal power-performance balance for different operational scenarios
2Use of energy by moving object
If clock signal frequency is decreased for low bandwidth workloads, then power consumption decreases, but performance for latency-sensitive workloads deteriorates
Solution Approach 1:
The patent incorporates feedback mechanisms that monitor workload characteristics and use this information to adjust clock frequency. The system detects workload type (bandwidth vs. latency sensitive) and feeds this information back to the clock control logic, which then adjusts frequency accordingly, ensuring performance consistency across different workload types
Solution Approach 2:
The system performs self-adjustment of clock frequency based on its own workload detection capabilities. The IC device autonomously monitors its operational state and adjusts its clock signal without external intervention, maintaining performance consistency through self-regulation
3Use of energy by moving object
If clock signal frequency is adjusted based only on data bandwidth, then power consumption is optimized, but latency performance deteriorates
Solution Approach 1:
The patent segments workload characterization into multiple independent parameters: data bandwidth and latency sensitivity. Instead of using a single bandwidth metric, the system divides workload analysis into distinct dimensions, allowing separate optimization for both power consumption (bandwidth-based) and latency performance (latency-based)
Solution Approach 2:
The system adds a new dimension to workload characterization by incorporating latency sensitivity alongside bandwidth. This transforms the workload assessment from a one-dimensional bandwidth metric to a two-dimensional space considering both data volume and time constraints, enabling comprehensive optimization
Data Source
AI summary
An integrated circuit device performs a method for adjusting a clock signal frequency. The method includes receiving a workload, and determining a latency parameter by sampling data of the workload. Further, an activation parameter is determined based on a data bandwidth on the workload. A clock signal of the IC device is adjusted based on the latency parameter and the activation parameter.