1.1.2c) Multicore and Parallel Systems

What is a multi-core processor?

• A chip with shared cache and communication method

• A single physical chip with two or more independent processing units

• A single physical chip with one processing unit

• A co-processor integrated onto a chip

What is a chip multiprocessor (CMP)?

• A single physical chip with one processing unit

• A co-processor integrated onto a chip

• A chip with shared cache and communication method

• A single physical chip with two or more independent processing units

What is the commonly referred term for a CMP with four cores?

• Hexa core processor

• Octa core processor

• Quad core processor

• Dual core processor

What is the objective of parallel processing?

• Running a program in more time

• Running a program in less time

• Running a program with more errors

• Running a program with less efficiency

How is parallel processing achieved in a multi-core system?

• By carrying out a single job split into tasks

• By running a program in more time

• By assigning separate processes to different processors

• By fetching, decoding, and executing instructions on the same unit

What is Amdahl's law used for in parallel computing?

• To calculate the cache size in a processor

• To calculate the number of cores in a processor

• To predict the possible speed decreases by adding more processors

• To predict the possible speed increases by adding more processors

According to Amdahl's law, what is the effect of simply adding more processing cores to a system?

• Significant speed decrease

• Slight speed increase

• Significant speed increase

• No effect at all

What is the difference between parallel processing and concurrent processing?

• Parallel processing supports more actions than concurrent processing

• Concurrent processing supports two or more actions in progress at the same time, while parallel processing supports two or more actions executing simultaneously

• There is no difference between parallel and concurrent processing

• Parallel processing supports two or more actions in progress at the same time, while concurrent processing supports two or more actions executing simultaneously

What is the main factor that determines the speed increase in parallel processing?

• The clock speed of the processor

• The cache size in the processor

• The actual task being carried out and the software's design to make use of parallel processing

• The number of cores in the processor

How does having multiple cores affect the speed of processing in a multi-core system?

• It has no effect on the speed of processing

• It decreases the efficiency of processing

• It slows down the speed of processing

• It increases the speed of processing