Multi-instance 2lm architecture for scm applications

Abstract

A multi-instance 2-Level-Memory (2LM) architecture manages access by processing instances having different memory usage priorities to memory having different performance and cost levels. The 2LM architecture includes a virtual memory management module that manages access by respective processing instances by creating memory instances based on specified memory usage priority levels and specified virtual memory sizes and defining policies for each usage priority level of the created memory instances. In response to a virtual memory request by a processing instance, the virtual memory management module determines whether a virtual memory size at a designated usage priority level requested by a processing instance can be satisfied by a policy of a created first memory instance and, if not, selects another memory instance that can satisfy the requested virtual memory size at the designated usage priority level and swaps out the first memory instance in favor of the other memory instance.