Apparatus and method with process migration

An electronic device configured to perform at least part of migration of a process from a source node to a target node, the electronic device comprising:

• a memory storing instructions;
• and
• one or more processors configured to execute the instructions,
• wherein the instructions, when executed by the one or more processors, cause the electronic device to control:
• the source node to downgrade a physical page in a local memory corresponding to the process to a physical page of a compute express link (CXL) memory pool having a first physical address, the source node having a first virtual address space corresponding to the process;
• and
• the target node to reconstruct the first virtual address space as a second virtual address space, determine a second physical address of the physical page in the CXL memory pool and map the second physical address to the second virtual address space,
• wherein the CXL memory pool is shared by the source node and the target node,
• the first physical address is determined based on a physical address encoding rule of the source node, and
• the second physical address is determined based on a physical address encoding rule of the target node.