Micro-operation Redundancy Detection Circuit
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Solution Overview
Problem
Existing data processing systems face inefficiencies due to repeated micro-operations that produce the same results, leading to unnecessary computation and increased energy consumption.
Innovation Solution
Implementing control circuitry to detect if a current micro-operation would yield the same result as the last valid micro-operation, allowing the system to skip processing and directly output the stored result, thereby reducing computational load and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the processing circuitry processes every micro-operation, then the output is always up-to-date, but energy consumption increases and performance decreases due to redundant calculations
Solution Approach 1:
The control circuitry performs preliminary detection to identify whether the current micro-operation would produce the same result as the last valid micro-operation before actual processing occurs. This advance detection allows the system to skip redundant processing, thereby reducing energy consumption while maintaining processing throughput by avoiding unnecessary operations.
2Loss of energy
If the processing circuitry processes every micro-operation, then computational accuracy is maintained, but energy usage increases due to repeated identical operations
Solution Approach 1:
The control circuitry continuously monitors and compares the current micro-operation with the last valid micro-operation, using feedback from this comparison to determine whether processing should be skipped. This feedback mechanism ensures that computational accuracy is maintained by only skipping operations when the result would be identical, while significantly reducing energy usage by avoiding redundant processing.
3Speed
If the output register is updated for every micro-operation, then the latest result is always available, but processing speed decreases due to unnecessary updates
Solution Approach 1:
The control circuitry performs preliminary detection and comparison before the processing circuitry executes the micro-operation. This advance detection allows the system to prevent unnecessary processing and register updates, thereby improving processing speed while the added control logic complexity is minimized through efficient detection mechanisms.
Data Source
AI summary
A data processing apparatus has control circuitry for detecting whether a current micro-operation to be processed by processing circuitry is for the same data processing operation and specifies the same at least one operand as the last valid micro-operation processed by the processing circuitry. If so, then the control circuitry prevents the processing circuitry processing the current micro-operation so that an output register is not updated in response to the current micro-operation, and outputs the current value stored in the output register as the result of the current micro-operation. This allows power consumption to be reduced or performance to be improved by not repeating the same computation.