摘要:
Techniques described above may enhance the power-performance efficiency of a processor, SoC, or a computing system. Embodiments described here allow an increase in frequency of the clock signal to a peak frequency value in response to detecting an occurrence of a burst of high activity within the low processor utilization periods. A power management unit may accumulate the budget during the low or idle processor utilization periods and the level of activity of the burst of high activity signal may be determined. The PMU may increase the frequency of the clock signal provided to the processing cores if the level of the burst of high activity exceeds a first threshold value and an accumulated budget value exceeds a second threshold value.
摘要:
In an embodiment, a processor includes multiple cores and a power controller. The power controller may include a hardware duty cycle (HDC) logic to cause at least one logical processor of one of the cores to enter into a forced idle state even though the logical processor has a workload to execute. In addition, the HDC logic may cause the logical processor to exit the forced idle state prior to an end of an idle period if at least one other logical processor is prevented from entry into the forced idle state. Other embodiments are described and claimed.
摘要:
An apparatus, method and system is described herein for thread consolidation. Current processor utilization is determined. And consolidation opportunities are identified from the processor utilization and other exaction parameters, such as estimating a new utilization after consolidation, determining if power savings would occur based on the new utilization, and performing migration/consolidation of threads to a subset of active processing elements. Once the consolidation is performed, the non-subset processing elements that are now idle are powered down to save energy and provide an energy efficient execution environment.
摘要:
In one embodiment, a processor includes a plurality of cores and a power controller including a first logic, responsive to a determination that the processor resided in a forced idle state for less than a threshold duration, to update a first counter and, responsive to a value of the first counter that exceeds a control threshold, prevent the processor from entry into the forced idle state. Other embodiments are described and claimed.
摘要:
In one embodiment, the present invention includes a multicore processor with first and second groups of cores. The second group can be of a different instruction set architecture (ISA) than the first group or of the same ISA set but having different power and performance support level, and is transparent to an operating system (OS). The processor further includes a migration unit that handles migration requests for a number of different scenarios and causes a context switch to dynamically migrate a process from the second core to a first core of the first group. This dynamic hardware-based context switch can be transparent to the OS. Other embodiments are described and claimed.
摘要:
In one embodiment, the present invention includes a multicore processor with first and second groups of cores. The second group can be of a different instruction set architecture (ISA) than the first group or of the same ISA set but having different power and performance support level, and is transparent to an operating system (OS). The processor further includes a migration unit that handles migration requests for a number of different scenarios and causes a context switch to dynamically migrate a process from the second core to a first core of the first group. This dynamic hardware-based context switch can be transparent to the OS. Other embodiments are described and claimed.
摘要:
An apparatus, method and system is described herein for thread consolidation. Current processor utilization is determined. And consolidation opportunities are identified from the processor utilization and other exaction parameters, such as estimating a new utilization after consolidation, determining if power savings would occur based on the new utilization, and performing migration/consolidation of threads to a subset of active processing elements. Once the consolidation is performed, the non-subset processing elements that are now idle are powered down to save energy and provide an energy efficient execution environment.
摘要:
In one embodiment, the present invention is directed to a processor having a plurality of cores and a cache memory coupled to the cores and including a plurality of partitions. The processor can further include a logic to dynamically vary a size of the cache memory based on a memory boundedness of a workload executed on at least one of the cores. Other embodiments are described and claimed.
摘要:
Methods and apparatus relating to controlling power consumption through multiple power limits over multiple time intervals are described. In one embodiment, the level of power consumption by a computing device component (e.g., a processor or one of its processor cores) is modified based on a determined power limit value. The power limit value may be determined based on rolling power consumption averages over multiple time intervals and their comparison against multiple corresponding power limits. Other embodiments are also disclosed and claimed.
摘要:
The present invention relates to a platform power management scheme. In some embodiments, a platform provides a relative performance scale using one or more parameters to be requested by an OSPM system.