BPM/BPM+: software-based dynamic memory partitioning mechanisms for mitigating DRAM bank-/channel-level interferences in multicore systems

摘要

Dynamic random access memory (DRAM) interference in shared memory systems can, as demonstrated in this paper, lead to degradation of performance. The paper proposes a software-based solution to provide isolation between applications by allocating different banks (bank-level partitioning mechanism (BPM)) and channels (BPM+) to different applications, thereby improving performance. The paper also proposes dynamically allocating the banks to applications based on their memory requirements with the objective of attaining uniform channel utilization.