发明名称 |
Power shifting in multicore platforms by varying SMT levels |
摘要 |
Power consumption in a microprocessor platform is managed by setting a peak power level for power consumed by a multi-core microprocessor platform executing multi-threaded applications. The multi-core microprocessor platform contains a plurality of physical cores, and each physical core is configurable into a plurality of logical cores. A simultaneous multithreading level in at least one physical core is adjusted by changing the number of logical cores on that physical core in response to a power consumption level of the multi-core microprocessor platform exceeding the peak power level. Performance and power data based on simultaneous multi-threading levels are used in selecting the physical core to be adjusted. |
申请公布号 |
US9003218(B2) |
申请公布日期 |
2015.04.07 |
申请号 |
US201213476179 |
申请日期 |
2012.05.21 |
申请人 |
International Business Machines Corporation |
发明人 |
Bose Pradip;Buyuktosunoglu Alper;Da Silva Dilma Menezes;Franke Hubertus;Tembey Priyanka |
分类号 |
G06F1/26;G06F1/32 |
主分类号 |
G06F1/26 |
代理机构 |
August Law, LLC |
代理人 |
August Law, LLC ;Willinghan George |
主权项 |
1. A method for managing power consumption in a microprocessor platform, the method comprising:
setting a peak power level for power consumed by a multi-core microprocessor platform executing multi-threaded applications, the multi-core microprocessor platform comprising a plurality of physical cores, each physical core configurable into a plurality of logical cores, each logical core executing a hardware thread from the multi-threaded application; and adjusting a simultaneous multithreading level in at least one physical core by changing a number of hardware threads executing on that physical core in response to a power consumption level of the multi-core microprocessor platform exceeding the peak power level; wherein the step of adjusting the simultaneous multithreading level further comprises decreasing the number of hardware threads executing for a plurality of physical cores in series until a current power consumption level is less than or equal to the peak power level. |
地址 |
Armonk NY US |