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    • 15. 发明申请
    • THERMAL MANAGEMENT OF ON-CHIP CACHES THROUGH POWER DENSITY MINIMIZATION
    • 通过功率密度最小化进行片上高速缓存的热管理
    • US20080120514A1
    • 2008-05-22
    • US11938040
    • 2007-11-09
    • Yehea IsmailGokhan MemikJa Chun KuSerkan Ozdemir
    • Yehea IsmailGokhan MemikJa Chun KuSerkan Ozdemir
    • G06F1/00
    • G06F1/32G06F1/3275H01L23/34H01L23/42H01L2924/0002Y02D10/14Y02D50/20H01L2924/00
    • Certain embodiments provide systems and methods for reducing power consumption in on-chip caches. Certain embodiments include Power Density-Minimized Architecture (PMA) and Block Permutation Scheme (BPS) for thermal management of on-chip caches. Instead of turning off entire banks, PMA architecture spreads out active parts in a cache bank by turning off alternating rows in a bank. This reduces the power density of the active parts in the cache, which then lowers the junction temperature. The drop in the temperature results in energy savings from the remaining active parts of the cache. BPS aims to maximize the physical distance between the logically consecutive blocks of the cache. Since there is spatial locality in caches, this distribution results in an increase in the distance between hot spots, thereby reducing the peak temperature. The drop in the peak temperature then results in a leakage power reduction in the cache.
    • 某些实施例提供用于降低片上高速缓存中的功耗的系统和方法。 某些实施例包括用于片上高速缓存的热管理的功率密度最小化架构(PMA)和块置换方案(BPS)。 PMA架构不是关闭整个银行,而是通过关闭银行中的交替行来扩展缓存库中的活动部分。 这降低了高速缓存中活动部件的功率密度,从而降低了结温。 温度的降低导致缓存的剩余活动部分的能量节省。 BPS旨在最大化缓存的逻辑连续块之间的物理距离。 由于缓存中存在空间局部性,所以这种分布导致热点之间的距离增加,从而降低峰值温度。 然后,峰值温度的下降导致高速缓存中的泄漏功率降低。