Toggle Rate Reduction in High Level Programming
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Solution Overview
Problem
Integrated circuit devices face inefficiencies in power dissipation, particularly during high-level programming, leading to increased power consumption and costs due to dynamic power dissipation, which is not effectively reduced by existing implementations.
Innovation Solution
Implementing toggle-rate reduced functionality through techniques such as If-then-else optimization, Merge node masking, and stallable register data retention, which selectively disable data inputs and registers to minimize toggling and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-level designs are implemented in the logic area of a programmable integrated circuit device, then the design functionality is achieved, but power dissipation is not effectively reduced and increases during normal operation
Solution Approach 1:
The patent implements dynamic control of register enable/disable states based on execution context. Registers are selectively enabled only when their data is needed for current execution, and disabled otherwise. This dynamic state transition reduces toggle rates and power consumption while maintaining full design functionality when needed.
Solution Approach 2:
The patent employs periodic evaluation of execution context (thread activity, branch outcomes, data validity) to determine register enablement states. By periodically assessing whether register data is currently needed and transitioning states accordingly, the system reduces unnecessary toggling and power dissipation while ensuring functionality is maintained when data is required.
2Adaptability or versatility
If multi-threaded languages are used for high-level designs, then programming flexibility is improved, but power consumption increases due to implementation inefficiencies
Solution Approach 1:
The patent applies different enablement states to different registers based on their specific usage context. Each register is independently controlled according to whether its data is currently needed, rather than enabling all registers uniformly. This localized control reduces overall power consumption while maintaining the adaptability needed for multi-threaded programming.
Solution Approach 2:
The patent changes the operational parameter of registers from a static enabled state to a dynamic state that transitions between enabled and disabled based on execution context. This parameter change allows the system to maintain programming flexibility when needed while reducing power consumption during periods when certain register data is not required.
3Reliability
If data inputs and registers are continuously enabled to maintain design functionality, then operational reliability is improved, but toggle rates increase and power dissipation worsens
Solution Approach 1:
The patent implements feedback mechanisms that monitor execution context (thread activity, branch outcomes, data validity signals) and use this information to control register enablement states. This feedback loop ensures registers are enabled only when their data is needed for current execution, maintaining operational reliability while reducing unnecessary toggling and power dissipation.
Solution Approach 2:
The patent uses data validity signals and execution context information to predict when register data will be needed, enabling registers in advance only when necessary. This preliminary assessment prevents unnecessary enablement while ensuring reliability by having data ready when required by the execution pipeline.
Data Source
AI summary
Power dissipation in integrated circuits may be reduced by efficient implementation of high level programming on the integrated circuits. As the high level programming logic is implemented on the integrated circuits, data inputs are disabled based upon branches and/or data that is not used by the high level programming.