While the memory subsystem is already a major contributor to energy consumption of embedded systems, the guard-banding required for masking the effects of ever increasing manufacturing variations in memories imposes even more energy overhead. In this talk, I explore how Partially-Forgetful Memories (i.e., memories that can tolerate some loss of data) can be used by exploiting the intrinsic tolerance of a vast class of applications to some level of error for relaxing this guard-banding in memories. I discuss the challenges to be addressed and introduce Relaxed Cache as an exemplar to address these challenges for partially-forgetful SRAM caches. Preliminary results show how adapting guard-bands to application characteristics can help the system save significant amount of cache leakage energy (up to 74%) while still generating acceptable quality results.
دکتر عباس بنائیان مفرد
آدرس:اصفهان اصفهان میدان آزادی، دانشگاه اصفهان، دانشکده مهندسی کامپیوتر، تالار دانشجو(طبقه همکف)