Dynamic Core Cooling via Power State Signals
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Solution Overview
Problem
Current cooling systems in multi-core computer systems are inefficient as they uniformly cool the entire processor die, failing to account for varying power states of individual cores, leading to thermal energy imbalances and increased power consumption.
Innovation Solution
A computer system that includes a microprocessor with output terminals indicating the power management state of each core, allowing for dynamic adjustment of cooling resources such as heatsinks, fans, liquid cooling, or Peltier devices to focus on active cores, thereby optimizing thermal energy removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If uniform cooling is applied to the entire processor die, then cooling coverage is complete, but cooling efficiency is reduced and power consumption increases
Solution Approach 1:
The processor die is divided into multiple thermal zones corresponding to individual cores or core groups, with independent temperature sensors and cooling control for each zone. This segmentation enables selective cooling of only those regions that require it, eliminating the energy waste of uniformly cooling the entire die while maintaining effective thermal management of active cores.
Solution Approach 2:
Different cooling strategies and intensities are applied to different regions of the processor die based on local thermal conditions and core power states. Active cores receive enhanced cooling while inactive or low-power cores receive reduced cooling, optimizing the balance between thermal energy removal and power consumption at each local region.
2Loss of energy
If cooling resources are concentrated on active cores, then cooling efficiency is improved, but thermal energy removal capability may be insufficient for high power states
Solution Approach 1:
The cooling system dynamically adjusts its operation based on real-time monitoring of core power states and temperature conditions. When cores transition to high-power states, the cooling system automatically increases cooling capacity for those specific regions. This dynamic adaptation ensures adequate thermal energy removal capability is maintained while avoiding the continuous power consumption of static maximum-cooling configurations.
Solution Approach 2:
Temperature sensors provide continuous feedback on the thermal state of each core or core group, which is used to adjust cooling resources in real-time. This feedback mechanism ensures that cooling capacity is scaled appropriately to match the actual thermal energy generation, preventing both overheating of active cores and unnecessary cooling of inactive regions.
3Adaptability or versatility
If monolithic cooling devices cover the entire processor package, then manufacturing is simplified, but adaptability to varying core power states is reduced
Solution Approach 1:
The monolithic cooling device is segmented into multiple independently controllable cooling elements or zones, each capable of being adjusted separately. This segmentation maintains the compact integrated structure beneficial for manufacturing while enabling flexible adaptation to varying power states of different cores through independent control of each cooling zone.
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
This approach enhances cooling efficiency by directing thermal resources to active cores, reducing power draw and enabling increased processing capability within the same thermal design power budget, while improving battery life in mobile devices and reducing active cooling power consumption in servers.
Implementation Method 1
cooling devices such as a fan are used to cool the microprocessor during operation by blowing air over a heatsink thermally coupled to the processor integrated circuit, thereby removing heat
Implementation Method 2
blowing air over a heatsink thermally coupled to the processor integrated circuit, thereby removing heat
Implementation Method 3
heatsinks and fans, liquid cooling, or Peltier devices
Data Source
AI summary
A multi-core microprocessor provides an indication of the power management state of each of the cores on output terminals. Cooling of the cores is adjusted responsive to the indication of the power management state of the respective cores with additional cooling being provided to those cores in a more active state and less cooling provided to those cores in a less active state.