International Business Machines Corporation

Rory Tatum

Michael Stephen Floyd

Phillip John Restle

Gregory Scott Still

Brian Thomas Vanderpool

Eric Jason Fluhr

Francesco A Campisano

Richard L Willaman

Isidore G Bendrihem

Rahul Batra

Ian Krispin Carmichael

Eric Marz

Michael N Goulet

Providing deterministic frequency and voltage enhancements for a processor is disclosed. In an embodiment, a microcontroller on a processor identifies a plurality of parameters related to a processor, the plurality of parameters including at least a current supplied to the processor; determines, in dependence upon the plurality of parameters, one or more frequency scaling indexes including determining an effective switching capacitance ratio; identifies, in dependence upon the one or more frequency scaling indexes, a predetermined frequency parameter for the processor; and transitions, based on the frequency parameter, the processor to a target clock frequency. In another embodiment, a microcontroller on a processor decreases, incrementally, a power supply voltage for a processor; determines that a voltage droop parameter exceeds a voltage droop parameter threshold; and increases, incrementally, the power supply voltage in response to determining that the voltage droop parameter exceeds a voltage droop parameter threshold.

Providing deterministic frequency and voltage enhancements for a processor

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PFLUGERVILLE, TX, United States of America

Rory Tatum