Support for Multiprogramming Multiprogramming means that several processes can share a computer concurrently. A process is the code, data, and any state information used in the execution of a program. A context switch means transfering control of the machine from one process to another. On a context switch either: the TLB must be cleared or tags in the TLB must be extended to include a PID (Process IDentifier).

Chapter 7: Large and Fast: Exploiting Memory Hierarchy - 61 of 67