The 242nd R-CCS Cafe - part 1

Memory systems in High Performance Computing systems have undergone major changes in recent years. The trend was to have main memory, storage, and multiple levels of cache, but now servers come with non-uniform memory access and can contain multiple types of memory. This work concentrates efforts on the issue of the use of various types of memory with different properties; we've specifically taken into account the power consumption metrics of each memory and decided where to allocate buffers when developers face power-constraining situations. In the same way, we also provide an early simulation model for those developers who don't have access to HMS and want to get an idea of how much power their applications could use on a given system. This talk provides an overview of HMS, summarizes the various results, and provides a future perspective.