一种全系统模拟器片上缓存动态功耗分析工具

A Cache Dynamic Power Analysis Tool in Full-System Simics

通过分析各种缓存逻辑结构和管理策略条件下的访存行为而得出5个原子操作;依据其对缓存数据阵列和标记阵列及其内部结构的操作,估算了原子操作的动态功耗并统计出缓存的动态功耗;基于修改的Cacti 6.5软件计算缓存数据阵列和标记阵列及其内部结构的功耗参数,提出了一种可用于全系统模拟器Simics的缓存动态功耗分析工具PowerGC.同时,经多组实验验证了PowerGC性能的有效性.结果表明,PowerGC可以有效评估Simics中各种缓存逻辑结构和管理策略的动态功耗.

A dynamic power analysis tool PowerGC based on Cache behavior for cycle-level full-system sim- ics was proposed. The basic idea is dissembling the Cache behavior into five atomic operations. These operations independently drive the sub-components of data array and tag array, which can be estimated by Cacti 6.5 and support different Cache logic structures and Cache management policies. According to the evaluation results based on Simics, PowerGC works well to estimate the Cache dynamical power for differ- ent Cache structures and different management policies.