Systems and methods for providing improved latency in a non-uniform memory architecture

摘要

Systems, methods, and computer programs are disclosed for allocating memory in a portable computing device having a non-uniform memory architecture. One embodiment of a method comprises: receiving from a process executing on a first system on chip (SoC) a request for a virtual memory page, the first SoC electrically coupled to a second SoC via an interchip interface, the first SoC electrically coupled to a first local volatile memory device via a first high-performance bus and the second SoC electrically coupled to a second local volatile memory device via a second high-performance bus; determining a free physical page pair comprising a same physical address available on the first and second local volatile memory devices; and mapping the free physical page pair to a single virtual page address.

主权项

1. A method for allocating memory in a portable computing device having a non-uniform memory architecture, the method comprising:
receiving from a process executing on a first system on chip a request for a virtual memory page, the first SoC electrically coupled to a second SoC via an interchip interface, the first SoC electrically coupled to a first local volatile memory device via a first high-performance bus and the second SoC electrically coupled to a second local volatile memory device via a second high-performance bus; determining by the first SoC a free physical page pair between the first and second local volatile memory devices, wherein a free physical page pair comprises a first physical address on the first local volatile memory device and a second physical address on the second local volatile memory device that have the same physical address and wherein both the first and second physical addresses are available for memory allocation in their respective local volatile memory devices; and logically mapping by the first SoC the free physical page pair to a same virtual page address of the requested virtual memory page.