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Hybrid on-chip memories that combine Non-Volatile Memories (NVMs) with SRAMs promise to mitigate the increasing leakage power of traditional on-chip SRAMs. The authors present HaVOC: a run-time memory manager that virtualizes the hybrid on-chip memory space and supports efficient sharing of distributed ScratchPad Memories (SPMs) and NVMs. HaVOC allows programmers and the compiler to partition the application's address space and generate data/instruction block layouts considering virtualized hybrid address spaces. They define a data volatility metric used by their hybrid memory-aware compilation flow to generate memory allocation policies that are enforced at run-time by a filter-inspired dynamic memory algorithm.
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