Processor Idle Workloads for Thermal Fluctuation Control
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Solution Overview
Problem
High performance computing devices experience significant thermal stresses due to large temperature fluctuations between active and idle periods, which can reduce the reliability and useful life of semiconductor processors.
Innovation Solution
Implementing an idle workload (IWL) that is executed during idle periods to maintain the processor temperature within a threshold range of the peak temperature, thereby reducing the frequency of large thermal fluctuations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the processor is allowed to cool down during idle periods, then power consumption is reduced, but large thermal fluctuations occur which reduce reliability
Solution Approach 1:
The patent applies periodic action by executing idle workloads at specific intervals during idle periods to maintain temperature within a target range. Instead of continuous operation, the processor performs computational tasks periodically when needed to prevent excessive cooling, thereby reducing thermal fluctuations while minimizing power consumption during extended idle periods.
Solution Approach 2:
The patent implements preliminary action by maintaining the processor temperature within a target range (between minimum and maximum temperatures) before entering extended idle periods. By keeping the temperature from dropping too low during idle periods through scheduled idle workloads, the system prepares the processor to avoid large thermal fluctuations when workloads are resumed, thereby protecting reliability while managing power consumption.
2Reliability
If idle workloads are executed to maintain temperature, then thermal fluctuations are reduced, but power consumption increases
Solution Approach 1:
The patent applies partial action by executing idle workloads only to the extent necessary to maintain temperature within the target range, not continuously. The system monitors temperature and schedules idle workloads partially or intermittently based on whether the temperature is approaching the minimum threshold, thereby reducing power consumption while still achieving the reliability benefit of reduced thermal fluctuations.
Solution Approach 2:
The patent uses periodic action to execute idle workloads at scheduled intervals rather than continuously. The system monitors temperature trends and schedules idle workload execution periodically only when needed to prevent temperature from dropping below the minimum threshold, thereby minimizing power consumption while maintaining processor reliability.
3Productivity
If the processor operates at high performance, then computational workload is handled better, but thermal stress increases reducing useful life
Solution Approach 1:
The patent implements beforehand cushioning by maintaining the processor temperature within a target range that prevents both excessive heat accumulation and excessive cooling. By keeping the temperature between minimum and maximum thresholds through scheduled idle workloads, the system cushions the processor against large thermal fluctuations that would otherwise occur during transitions between high-performance operation and idle states, thereby extending useful life while maintaining productivity.
Solution Approach 2:
The patent applies periodic action by scheduling idle workloads during idle periods to maintain temperature stability. This periodic intervention prevents large thermal fluctuations that occur when transitioning from high-performance operation to idle states, thereby reducing thermal stress and extending the processor's useful life without significantly impacting computational productivity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The approach reduces the frequency of large thermal fluctuations, thereby reducing thermal stresses on the processor and increasing its reliability and useful life, while also allowing for power savings during extended idle periods.
Implementation Method 1
executing an idle workload procedure during the idle period to maintain the temperature of the accelerator within a target temperature range
Data Source
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AI summary
Methods, apparatus, systems, and articles of manufacture to reduce thermal fluctuations in semiconductor processors are disclosed. An apparatus includes a temperature analyzer to determine a current temperature of a processor. The apparatus further includes a controller to provide an idle workload to the processor to execute in response to the current temperature falling below a setback temperature.