Using a voltage control loop to modify voltages in a processing unit

A computer implemented method for adjusting voltage at a processor having a plurality of cores, comprising:

• implementing timing protection control loops for the cores, wherein a timing protection control loop of the timing protection control loops processes an output value from a sensor to determine whether to implement a mitigation measure to throttle instruction execution at a core;
• implementing a voltage control loop for a plurality of the cores to perform:
• calculating a performance degradation value based on instances output values calculated by timing protection loops at the cores satisfied a threshold condition;
• inputting the performance degradation value to a function to output a voltage increase, wherein the function provides different voltage increases for different performance degradation values;
• and
• increasing the voltage supplied to the processor and the cores by the voltage increase.

A system, comprising:

• a processor;
• and
• a plurality of cores in the processor comprising, wherein a core of the cores includes:
• a sensor;
• and
• control logic implemented in the cores to perform a mitigation measure when an output value of the sensor satisfies a threshold condition;
• and
• a power management engine to perform:
• calculating a performance degradation value for the cores based on instances of the mitigation measure performed when an output value of the sensor satisfies a threshold condition;
• inputting the performance degradation value to a function to output a voltage increase, wherein the function provides different voltage increases for different performance degradation values;
• and
• transmitting a command to increase the voltage supplied to the processor by the voltage increase.

A system, comprising:

• a processor;
• and
• a plurality of cores in the processor comprising timing protection control loops, wherein a timing protection control loop of the timing protection control loops processes an output value from a sensor to determine whether to implement a mitigation measure to throttle instruction execution at a core;
• a voltage control loop for a plurality of the cores to perform:
• calculating a performance degradation value based on instances output values calculated by timing protection loops at the cores satisfied a threshold condition;
• inputting the performance degradation value to a function to output a voltage increase, wherein the function provides different voltage increases for different performance degradation values;
• and
• increasing the voltage supplied to the processor and the cores by the voltage increase.

A processor, comprising:

• a plurality of cores, wherein a core of the cores includes:
• a sensor;
• and
• control logic implemented in the cores to perform a mitigation measure when an output value of the sensor satisfies a threshold condition;
• and
• a power management engine to perform:
• calculating a performance degradation value for the cores based on instances of the mitigation measure performed when an output value of the sensor satisfies a threshold condition;
• inputting the performance degradation value to a function to output a voltage increase, wherein the function provides different voltage increases for different performance degradation values;
• and
• transmitting a command to increase the voltage supplied to the processor by the voltage increase.