dynamic frequency scaling

Scaling domain membership

Record clock-domain membership separately from software policy membership and shared power dependencies.

1. Which processor cores, accelerators, memory interfaces or other components have their operating clock changed by this control? boundary
2. What platform documentation or runtime enumeration establishes which resources must scale together? provenance

Frequency selection space

Record supported rates or ranges, request encoding and any conditional availability of elevated rates.

1. Does the interface accept a frequency in Hz, a discrete operating-point identifier, a range or a performance preference? definition
2. Which selectable rates are documented, and which depend on additional operating conditions? boundary
3. How are unsupported targets rejected, rounded or mapped to supported rates? action

Request and selection contract

Record whether a control supplies an exact target, limits or a preference, and which component makes the final selection.

1. Which software, firmware or hardware component selects the operating frequency? provenance
2. Does an agent's request specify a required target, an allowed range or an advisory preference? action

Demand-to-frequency policy

Record the policy's signals, update triggers and mechanisms for avoiding unnecessary oscillation.

1. Which demand signals or events cause the policy to reconsider frequency? definition
2. What sampling interval, hysteresis or minimum residency controls repeated upshifts and downshifts? measurement
3. Which policy parameters may be adjusted to meet the workload's latency or efficiency objective? action

Limit arbitration

Distinguish configured frequency bounds from thermal, power, electrical and competing-client restrictions.

1. Which limits currently constrain frequency, and which source imposed each limit? provenance
2. How are conflicting minimum requests and maximum caps resolved? definition
3. What evidence identifies the binding restriction when the requested rate is not delivered? measurement

Valid operating-point dependencies

Record voltage prerequisites and cross-domain restrictions relevant to a frequency change.

1. Is frequency adjustment independent of voltage selection, or mediated through coupled operating points? boundary
2. Which shared supply rails, clock relationships or other domains constrain a valid transition? boundary
3. Which controller guarantees required sequencing and rejects invalid combinations? provenance

Frequency change timing

Record transition completion criteria, latency, intermediate behaviour and failure indications.

1. What event marks request acceptance, and what evidence marks arrival at the new operating rate? definition
2. How long does the transition take under the relevant load, including any execution stall? measurement
3. How does the interface report rejected, superseded or incomplete changes? action

Telemetry semantics

Label readings as targets, hardware observations or interval estimates and document their treatment of idle time.

1. Does each frequency reading represent a requested target, a hardware observation or an interval-derived estimate? definition
2. What observation interval, resolution and idle-time treatment apply to the measurement? measurement
3. Which clock or counter supplies timing, and does its rate change with the scaled domain? provenance

Frequency sensitivity and efficiency

Compare completed work, latency and energy under documented workload and operating conditions.

1. How do throughput, completion time and deadline misses change across tested frequency settings or policies? measurement
2. What energy per completed work unit is measured, and which components are included in the energy boundary? measurement
3. Is workload progress limited by the scaled compute domain, memory access, I/O or another dependency? boundary

Trial and restoration

Record the baseline, authorised intervention, acceptance criteria and restoration procedure for a scaling trial.

1. Which target, bounds or policy parameters will change, and which shared-domain workloads will be affected? action
2. What latency, deadline, energy or stability result requires stopping the trial and restoring the baseline? action
3. How will the agent verify that restoration took effect despite autonomous selection or competing controllers? measurement

Check these first

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these check these first hold for the sense of dynamic frequency scaling this model covers, and on what evidence? provenance

Kinds and varieties

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these kinds and varieties hold for the sense of dynamic frequency scaling this model covers, and on what evidence? provenance

Standards and regulation

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these standards and regulation hold for the sense of dynamic frequency scaling this model covers, and on what evidence? provenance

Real-world use

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these real-world use hold for the sense of dynamic frequency scaling this model covers, and on what evidence? provenance

Typical measurements

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these typical measurements hold for the sense of dynamic frequency scaling this model covers, and on what evidence? provenance

Failure modes and hazards

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these failure modes and hazards hold for the sense of dynamic frequency scaling this model covers, and on what evidence? provenance

Neighbouring kinds and how to tell them apart

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these neighbouring kinds and how to tell them apart hold for the sense of dynamic frequency scaling this model covers, and on what evidence? provenance