摘要:
In one embodiment an apparatus includes a temperature sensor to perform a multiplicity of junction temperature measurements for a component in a platform, a controller comprising logic at least a portion of which is in hardware. The logic may receive from the temperature sensor the multiplicity of junction temperature measurements and may instruct the component to perform a first power down action of the component when a junction temperature measurement exceeds a first threshold, and may instruct the component to perform a second power down action of the component when an average junction temperature based on the multiplicity of junction temperature measurements exceeds a second threshold. Other embodiments are disclosed and claimed.
摘要:
Systems, methods, and apparatuses relating to hardware control of processor performance levels are described. In one embodiment, a processor includes a plurality of logical processing elements; and a power management circuit to change a highest non-guaranteed performance level and a highest guaranteed performance level for each of the plurality of logical processing elements, and set a notification in a status register when the highest non-guaranteed performance level is changed to a new highest non-guaranteed performance level.
摘要:
In an embodiment, a processor includes a power control unit and a plurality of components. A first component of the plurality of components is to receive a power input from a power supply device. The power control unit is to: determine a received voltage at a power input terminal of the first component; determine a voltage difference between the received voltage of the first component and a reliability goal voltage of the first component; determine a running average value based on the voltage difference; and adjust a supply voltage of the power supply device based on the running average value. Other embodiments are described and claimed.
摘要:
Examples are disclosed for an integrated circuit (IC) device coupled to a battery-operated power supply unit, such as an IC in a mobile computing device or wireless phone, to accurately determine energy usage drawn from the power supply unit under rapidly dynamic circumstances. A current sense signal of a power line from the power supply unit is digitized. The digitized current sense is added to an accumulator at a rate that is approximately proportional to a voltage of the power line from the power supply unit. The accumulator is then outputted and scaled to units relevant to energy measurements. The energy measurement is used to estimate remaining battery life. Triggering the digitization of the current sense signal may be by use of a pulse generation circuit, or by use of an overflow indicator of an accumulator for a digitized voltage sense signal. Other examples are described and claimed.
摘要:
In an embodiment, a processor includes measurement logic to measure a usage associated with the processor. The processor also includes statistical logic to determine, based on a statistical procedure, whether to provide a permission to record an increase in usage responsive to an indication that the usage has increased by a defined amount. The processor also includes control logic to record the defined increase in usage in non-volatile memory responsive to receipt of the permission to record from the statistical logic. Other embodiments are described and claimed.
摘要:
In an embodiment, a processor includes processing cores, and a central control unit to: concurrently execute an outer control loop and an inner control loop, wherein the outer control loop is to monitor the processor as a whole, and wherein the inner control loop is to monitor a first processing core included in the processor; determine, based on the outer control loop, a first control action for the first processing core included in the processor; determine, based on the inner control loop, a second control action for the first processing core included in the processor; based on a comparison of the first control action and the second control action, select one of the first control action and the second control action as a selected control action; and apply the selected control action to the first processing core. Other embodiments are described and claimed.
摘要:
Methods and apparatus relating to autonomous C state mechanism and computational engine alignment for improved processor power efficiency are described. An embodiment determines whether a semiconductor package should enter a package C state based on energy consumption values for entry into and exit from the package C state, an amount of time the semiconductor package stayed in the package C state previously, and one or more breakeven time points between the various package C states. Another embodiment detects a delay by an imaging computational unit of a processor to enter a low power consumption state relative to one or more other computational units of the processor. The logic causes the imaging computational unit to enter the low power consumption state in response to detection of the delay. Other embodiments are also disclosed and claimed.
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:
A processor may include a core and an uncore area. The power consumed by the core area may be controlled by controlling the Cdyn of the processor such that the Cdyn is within an allowable Cdyn value irrespective of the application being processed by the core area. The power management technique includes measuring digital activity factor (DAF), monitoring architectural and data activity levels, and controlling power consumption by throttling the instructions based on the activity levels. As a result of throttling the instructions, throttling may be implemented in 3rd droop and thermal design point (TDP). Also, the idle power consumed by the uncore area while the core area is in deep power saving states may be reduced by varying the reference voltage VR and the VP provided to the uncore area. As a result, the idle power consumed by the uncore area may be reduced.
摘要:
For one disclosed embodiment, a processor comprises a plurality of processor cores to operate at variable performance levels. One of the plurality of processor cores may operate at one time at a performance level different than a performance level at which another one of the plurality of processor cores may operate at the one time. The plurality of processor cores are in a same package. Logic of the processor is to set one or more operating parameters for one or more of the plurality of processor cores. Logic of the processor is to monitor activity of one or more of the plurality of processor cores. Logic of the processor is to constrain power of one or more of the plurality of processor cores based at least in part on the monitored activity. The logic to constrain power is to limit a frequency at which one or more of the plurality of processor cores may be set. Other embodiments are also disclosed.