ENHANCED DYNAMIC MEMORY MANAGEMENT WITH INTELLIGENT CURRENT/POWER CONSUMPTION MINIMIZATION

    公开(公告)号:US20170329385A1

    公开(公告)日:2017-11-16

    申请号:US15666643

    申请日:2017-08-02

    IPC分类号: G06F1/32 G06F13/16

    摘要: A low-power state current/power consumption for each volatile memory device in a plurality of volatile memory devices is obtained. Data is copied from a first set of the volatile memory devices to a second set of the volatile memory devices, where the second set of volatile memory devices has a lower current/power consumption than the first set of volatile memory devices. Additionally, a current/power consumption may be obtained for each memory bank within each of the plurality of volatile memory devices. Data is then copied from a first set of memory banks to a second set of memory banks within the same memory device in the second set of memory devices, where the second set of memory banks has lower current/power consumption than the first set of memory banks. The first set of volatile memory devices and/or first set of memory banks are then placed into a power-down state.

    CACHE POWER MANAGEMENT
    37.
    发明申请

    公开(公告)号:US20170255248A1

    公开(公告)日:2017-09-07

    申请号:US15447866

    申请日:2017-03-02

    申请人: ARM Limited

    IPC分类号: G06F1/32

    摘要: A method of operating a cache and corresponding apparatus are provided. The cache is capable of being only partially powered, and a decision to reduce the proportion of the cache which is currently powered is made based on calculating a memory bandwidth equivalent of expending the current active cache leakage power on memory access. The cache hit bandwidth is compared against this memory bandwidth equivalent and when the cache hit bandwidth is less than the memory bandwidth equivalent, the proportion of the cache which is currently powered is reduced. A analogous decision may also be made and based on calculating a cache hit bandwidth equivalent for an increment increase in cache leakage power, and when the cache miss bandwidth exceeds the cache hit bandwidth equivalent, the proportion of the cache which is currently powered is increased.