| 发明名称 |
DETERMINISTIC CURRENT BASED FREQUENCY OPTIMIZATION OF PROCESSOR CHIP |
| 摘要 |
A method for adjusting a frequency of a processor is disclosed herein. In one embodiment, the method includes determining a total current and a temperature of the multi-core processor and estimating a leakage current for the multi-core processor. The method also includes calculating a switching current by subtracting the leakage current from the total current. The method also includes calculating an effective switching capacitance based at least in part on the switching current. The method also includes calculating a workload activity factor by dividing the effective switching capacitance by a predetermined effective switching capacitance stored in vital product data, and enforcing a turbo frequency limit of the multi-core processor based on the workload activity factor. |
| 申请公布号 |
US2017031417(A1) |
申请公布日期 |
2017.02.02 |
| 申请号 |
US201514833324 |
申请日期 |
2015.08.24 |
| 申请人 |
International Business Machines Corporation |
发明人 |
ALLEN-WARE Malcolm S.;FLOYD Michael S.;FRIEDRICH Joshua D.;LEFURGY Charles R.;PETERSON Kirk D.;RAJAMANI Karthick;RAMANI Srinivasan;ROSEDAHL Todd J.;STILL Gregory S.;THOMPTO Brian W.;ZYUBAN Victor |
| 分类号 |
G06F1/32 |
主分类号 |
G06F1/32 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for adjusting a frequency of a multi-core processor, comprising:
determining a total current and a temperature of the multi-core processor; estimating a leakage current for the multi-core processor; calculating a switching current by subtracting the leakage current from the total current; calculating an effective switching capacitance based at least in part on the switching current; calculating a workload activity factor by dividing the effective switching capacitance by a predetermined effective switching capacitance stored in vital product data; and enforcing a turbo frequency limit of the multi-core processor based on the workload activity factor. |
| 地址 |
Armonk NY US |
