SIMULATION METHOD AND SIMULATOR FOR REMOTE MEMORY ACCESS IN MULTI-PROCESSOR SYSTEM

摘要

In a multi-processor computer system such as a NUMA system, memory is distributed on each processor node, and the delay for the processor to access the memory of non-local nodes is far longer than the delay for the processor to access the memory of a local node. When simulating such a system, the simulation of a remote memory access event plays an important role in simulation efficiency and accuracy. Provided is a method for simulating, on a host, the remote memory access of a target machine in the NUMA system, the method comprising: dividing a plurality of virtual memory spaces in the host; setting the virtual address space of each target application process to a virtual memory space in the plurality of virtual memory spaces that corresponds to the application process; capturing the access of the target application process to a virtual memory space outside the corresponding virtual memory space.