System and method for controlling voltage level and clock frequency supplied to a system
View Patent ↗A system that includes at least one component adapted to execute at least one application, characterized by including a controller adapted to receive at least one load indication of at least one component of the system and to selectively alter at least one control parameter of a voltage and clock frequency management scheme; whereas the system is adapted to apply the voltage and clock frequency management scheme. A method for controlling voltage level and clock frequency supplied to a system, the method includes receiving at least one load indication of at least one component of the system; characterized repeating the stages of: selectively altering at least one control parameter of a voltage and clock frequency management scheme; and applying the voltage and clock frequency management scheme.
1. A method for controlling voltage level and clock frequency supplied to a system, the method comprises:
receiving at least one load indication of at least one component of the system;
repeating the stages of:
receiving at least one additional indication of an error rate, other than the at least one load indication, associated with an application being executed by at least one component of the system;
determining at least one control parameter of a voltage and clock frequency management scheme in response to the at least one additional indication, wherein the at least one control parameter includes a load related threshold;
altering the at least one control parameter of the voltage and clock frequency management scheme; and
applying the voltage and clock frequency management scheme based on the altered at least one control parameter.
2. The method according to claim 1 wherein the determining comprises altering a weight of previous load samples on current decision.
3. The method according to claim 1 , whereas the determining comprises estimating a performance gap.
4. The method according to claim 1 , whereas the determining is responsive to a relationship between a tolerated error rate of the application and an actual error rate of the application.
5. The method according to claim 1 , whereas the determining is responsive to a power estimate of error correction measures.
6. The method according to claim 1 , whereas the determining is responsive to quality of communication channel established with the system.
7. The method according to claim 1 , whereas the determining comprises altering a duration of a voltage and clock signal increment decision period.
8. The method according to claim 1 , further comprising:
receiving at least one additional indication of a quality level associated with an application being executed by at least one component of the system; and
determining the at least one control parameter of the voltage and clock frequency management scheme at least in response to the at least one additional indication.
9. The method according to claim 1 , whereas the altering comprises altering at least one thresholds associated with an exponential moving average load estimate.
10. The method according to claim 1 further comprising receiving at least one additional indication of an amount of errors associated with an application being executed by the at least one component of the system; and determining the at least one control parameter of the voltage and clock frequency management scheme in response to the at least one additional indication of the amount of errors.
11. A system that comprises:
at least one component adapted to execute at least one application,
a controller adapted to repetitively and alter at least one control parameter of a voltage and clock frequency management scheme, wherein the at least one control parameter includes a load related threshold;
whereas the system is adapted to repetitively apply the voltage and clock frequency management scheme based on the altered at least one control parameter;
wherein the system is further adapted to receive at least one indication of an error rate associated with an application being executed by the at least one component of the system and to determine the at least one control parameter of the voltage and clock frequency management scheme at least in response to the at least one indication of the error rate.
12. The system according to claim 11 further adapted to alter wherein the determining comprises altering a weight of previous load samples on current decision.
13. The system according to claim 11 , whereas the system is adapted to estimate a performance gap.
14. The system according to claim 11 , whereas the system is responsive to a relationship between a tolerated error rate of the application and an actual error rate of the application.
15. The system according to claim 11 , whereas the system is responsive to a power estimate of error correction measures.
16. The system according to claim 11 , whereas the system is adapted to alter a length of a voltage and clock signal increment decision period.
17. The system according to claim 11 , whereas the system is adapted to receive at least one indication of a quality level associated with an application being executed by the at least one component of the system; and determine the at least one control parameter of the voltage and clock frequency management scheme at least in response to the at least one indication of the quality level.
18. The system according to claim 11 , whereas the system is adapted to alter at least one threshold associated with an exponential moving average load estimate.
19. The system according to claim 11 further adapted to receive at least one indication of an amount of errors associated with an application being executed by the at least one component of the system and to determine the at least one control parameter of the voltage and clock frequency management scheme at least in response to the at least one indication of the amount of errors.
20. A method for controlling voltage level and clock frequency supplied to a system, the method comprises:
repeating the stages of:
receiving at least one indication of an error rate associated with an application being executed by at least one component of the system;
determining at least one control parameter of a voltage and clock frequency management scheme in response to the at least one indication of the error rate, wherein the at least one control parameter includes a load related threshold;
determining whether the error rate is above or below a target error rate;
in response to determining whether the error rate is above or below the target error rate, if the error rate is below the target error rate, altering the at least one control parameter of the voltage and clock frequency management scheme to apply a more aggressive voltage and clock frequency management scheme as the voltage and clock frequency management scheme;
in response to determining whether the error rate is above or below the target error rate, if the error rate is above the target error rate, altering the at least one control parameter of the voltage and clock frequency management scheme to apply a less aggressive voltage and clock frequency management scheme as the voltage and clock frequency management scheme; and
applying the voltage and clock frequency management scheme based on the altered at least one control parameter.