Abstract
With the help of modern memory integration technologies, Processing-in-Memory (PIM) has emerged as a practical approach to mitigate the memory wall while improving performance and energy efficiency in contemporary applications. Since these designs encompass accelerating and increasing the efficiency of critical specific and general-purposed applications, it is expected that these accelerators will be coupled to existing systems and consequently with systems capable of multi-thread computing. However, there is a lack of tools capable of quickly simulating different PIMs designs and their suitable integration with other hosts. This gap is even worse when considering simulations of multi-core systems. This work presents Sim2PIM, a Simple Simulator for PIM devices that seamlessly integrates any PIM architecture with the host processor and memory hierarchy. The framework simulation achieves execution speeds and accuracy on par with the perf tool on host code, less than 10% run-time overhead, and around 2% difference in metrics. Additionally, by exploring the thread parallelism in the application and utilizing the host hardware, Sim2PIM can achieve more than 8× simulation speedup compared to a sequential simulation and orders of magnitude compared to other simulators. Sim2PIM is available to download at https://pim.computer/.
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