Correct : A. In parallel computing, it is a qualitative measure of the ratio of computation to communication
2. Coarse-grain Parallelism
Correct : C. Relatively large amounts of computa- tional work are done between communication / synchronization events
3. Cache Coherent UMA (CC-UMA) is
Correct : B. Here if one processor updates a location in shared memory, all the other processors know about the update.
4. Non-Uniform Memory Access (NUMA) is
Correct : C. Here one SMP can directly access memory of another SMP and not all processors have equal access time to all memories
5. It distinguishes multi-processor computer architectures according to how they can be classified along the two independent dimensions of Instruction and Dat(A) Each of these dimensions can have only one of two possible states: Single or Multiple.
Correct : B. Flynn’s taxonomy
6. In the threads model of parallel programming
Correct : A. A single process can have multiple, concurrent execution paths
7. These applications typically have multiple executable object files (programs). While the application is being run in parallel, each task can be executing the same or different program as other tasks. All tasks may use different data
Correct : B. Multiple Program Multiple Data (MPMD)
8. Here a single program is executed by all tasks simultaneously. At any moment in time, tasks can be executing the same or different instructions within the same program. These programs usually have the necessary logic programmed into them to allow different tasks to branch or conditionally execute only those parts of the program they are designed to execute.
Correct : A. Single Program Multiple Data (SPMD)
9. These computer uses the stored-program concept. Memory is used to store both program and data instructions and central processing unit (CPU) gets instructions and/ or data from memory. CPU, decodes the
instructions and then sequentially performs them.
Correct : C. Von Neumann Architecture
10. Load balancing is
Correct : C. It refers to the practice of distributing work among tasks so that all tasks are kept busy all of the time. It can be considered as minimization of task idle time.
11. Synchronous communication operations referred to
Correct : A. Involves only those tasks executing a communication operation
12. Data dependence is
Correct : B. It exists between program statements when the order of statement execution affects the results of the program.