Allocating and accessing memory pages with near and far memory blocks from heterogenous memories

A system, comprising:

• one or more hardware processors implementing a heterogeneous memory system, comprising:
• a low-latency near memory (NM) and a high-latency far memory (FM);
• and
• wherein the one or more hardware processors is configured to execute an operating system to:
• allocate a page, wherein the page contains a set of NM blocks stored in the NM and a set of FM blocks stored in the FM, and the page is assigned to a region of memory that stores a particular proportion of blocks in the page in the NM;
• detect, based at least in part on access requests to the page, that a page access pattern of the page meets a specified threshold;
• and
• in response to the detection that the page access pattern meets the specified threshold, migrate the page to a new region of memory that stores a different proportion of blocks in the page in the NM.

A non-transitory computer-accessible storage medium storing program instructions that when executed on one or more processors of a heterogeneous memory system, cause the heterogeneous memory system to implement an operating system configured to:

• allocate a page, wherein the page contains a set of near memory (NM) blocks stored in a low-latency NM and a set of far memory (FM) blocks stored in a high-latency FM, and the page is assigned to a region of memory that stores a particular proportion of blocks in the page in the NM;
• detect, based at least in part on access requests to the page, that a page access pattern of the page meets a specified threshold;
• and
• in response to the detection that the page access pattern meets the specified threshold, migrate the page to a new region of memory that stores a different proportion of blocks in the page in the NM.