A Level Computer Science OCR Practice Exam

What does Multiple Instruction, Multiple Data (MIMD) signify in computing?

1. Executing multiple instructions on a single piece of data

2. Carrying out different instructions on multiple data pieces simultaneously

3. Processing data sequentially in one instruction

4. Executing a single instruction on multiple datas

The correct answer is: Carrying out different instructions on multiple data pieces simultaneously

Multiple Instruction, Multiple Data (MIMD) refers to a parallel computing architecture where multiple processors can execute different instructions on different pieces of data simultaneously. This capability allows for more complex computations and efficient processing, as each processor works independently on separate tasks, making full use of the resources available. In the context of parallel processing, MIMD systems are highly flexible and can handle a wide variety of workloads, as they can engage different processors to perform distinct operations at the same time. This contrasts with other architectures, which may limit processors to executing the same instruction on the same data or require a sequential approach to processing data. MIMD enables systems to handle diverse operations and data sets more effectively, which is especially useful in complex computation tasks found in scientific computing, artificial intelligence, and data processing. Thus, the definition of MIMD as carrying out different instructions on multiple data pieces simultaneously accurately encapsulates its operational structure and capabilities.