Identification of a computing device accessing a shared memory

A method for identifying, in a system including two or more computing devices that are able to communicate with each other, with each computing device having a cache and connected to a corresponding memory, the computing device accessing one of the memories, the method comprising:

• monitoring memory access to any of the memories, wherein monitoring memory access comprises identifying respective computing devices that access respective memories;
• monitoring cache coherency commands between computing devices;
• and
• identifying the computing device accessing one of the memories by using information related to the memory access and cache coherency commands.