摘要:
An apparatus and method for per-node thermal control of processing nodes is disclosed. The apparatus includes a plurality of processing nodes, and further includes a power management unit configured to set a first frequency limit for at least one of the plurality of processing nodes responsive to receiving an indication of a first detected temperature greater than a first temperature threshold, wherein the first detected temperature is associated with the one of the plurality of processing nodes. The power management unit is further configured to set a second frequency limit for each of the plurality of processing nodes responsive to receiving an indication of a second temperature greater than a second temperature threshold.
摘要:
A clock system of an integrated circuit includes first and second transistors forming a switch that is used when switching the clock system between a resonant mode of operation and a non-resonant mode of operation. An inductor forms a resonant circuit with capacitance of the clock system in resonant mode. The switch receives a clock signal and supplies the clock signal to the inductor when the switch is closed and disconnects the inductor from the clock system when the switch is open. First and second high impedance voltage sources supply respective first and second voltages to the switch and a gate voltage of the first transistor transitions with the clock signal around the first voltage and a gate voltage of the second transistor transitions with the clock signal around the second voltage such that near constant overdrive voltages are maintained for the first and second transistors.
摘要:
A sense-amplifier monotizer includes an amplifier circuit and a keeper circuit. The amplifier circuit outputs a predetermined logic state while a clock signal is in a first phase, and samples a data signal and outputs at least one of the data signal and a complementary logic state of the data signal while the clock signal is in a second phase. A subsequent change of the data signal does not affect an output of the amplifier circuit once the data signal is sampled while the clock signal is in the second phase. The keeper circuit keeps a logic state of the sampled data signal once the data signal is sampled while the clock signal is in the second phase. The amplifier circuit may receive multiple data signals, and output a data signal selected by the select signal and/or a complementary value while the clock signal is in the second phase.
摘要:
A clock driver circuit supplies a clock signal with a drive strength determined according to one or more control signals supplied to the clock driver that vary during run-time. The clock driver is operated with a first drive strength in a non-resonant mode of operation of an associated clock network and with a second drive strength in a resonant mode of operation of the associated clock network, the first drive strength being higher than the second drive strength.
摘要:
A system and method for managing multiple discrete operating points to create a stable virtual operating point. One or more functional blocks within a processor produces data corresponding to an activity level associated with the respective functional block. A power manager determines a power consumption value based on the data once every given sample interval. In addition, the power manager determines a signed accumulated difference over time between a thermal design power (TDP) and the power consumption value. The power manager selects a next power-performance state (P-state) based on comparisons of the signed accumulated difference and given thresholds. Transitioning between P-states in this manner while the workload does not significantly change causes the processor to operate at a virtual operating point between supported discrete operating points.
摘要:
A system and method for efficient reporting of power usage. A power reporting unit within a processor receives a power consumption number once every sample interval from a power monitor. The power monitor determines a power consumption number based on sampled signals within one or more functional blocks in the processor, rather than based on temperature. An average power consumption number is computed based on received power consumption numbers for a running time interval, wherein the running time interval is larger than the sample interval. This value is conveyed to an external agent. Responsive to receiving and processing the average power consumption number, the external agent may cause changes in a cooling system.
摘要:
A method and an apparatus are described that delay application of a higher order Power Density Multiplier (PDM) using a time based moving average of a number of active cores in a multicore system. A PDM is applied to a thermal design power budget of a thermal entity and performance of the thermal entity is increased by transferring available power from a thermal entity not in an active state to a thermal entity in an active state. Sufficient time is allowed for the cooling effect of reduced active cores, to influence the active core that receives the extra power (a higher PDM). Similarly delaying application of a lower PDM with the same moving average, but a different threshold, allows a core to retain a higher power allocation until the more active neighbor core(s) cause it to heat up, thereby boosting core performance.
摘要:
A method for automatically scaling estimates of digital power consumed by a portion of an integrated circuit (IC) device by the operating frequency of the portion of the IC are described herein. The method may include obtaining an energy value which may correspond to an amount of energy used by the portion of the IC. A cumulative energy value may be generated by repeatedly, at a frequency proportional to the operating frequency of the portion of the IC, obtaining energy values and adding each obtained energy value to a sum of energy values for the portion of the IC. The cumulative energy value may be sampled at a time sample interval to generate an estimate of the portion of the IC's digital power consumption that is automatically scaled with the operating frequency of the portion of the IC.
摘要:
Techniques are disclosed relating to determining power consumption of an integrated circuit. In one embodiment, an integrated circuit is disclosed that includes a power monitor unit configured to receive a temperature of the integrated circuit, and to determine an estimate of power consumed by transistor leakage of the integrated circuit based on the received temperature. In one embodiment, to determine the estimate, the power monitor unit is configured to multiply a base value and a scaling factor that is adjusted based on the received temperature. In some embodiments, the power monitor unit is configured to receive performance state information of the integrated circuit, and to determine an estimate of power consumed by transistor leakage of the integrated circuit based on the performance state information.
摘要:
An apparatus comprising an integrated circuit on a VLSI die, and an embedded micro-controller constructed on the VLSI die, the micro-controller adapted to monitor and control the VLSI environment to optimize the integrated circuit operation. Another embodiment of the invention is directed to a method for monitoring and controlling an integrated circuit comprising providing an embedded micro-controller on a same VLSI die as the integrated circuit, monitoring and controlling a VLSI environment of the integrated circuit with the embedded micro-controller.