parallel computing Practice Questions Answers Test with Solutions & More Shortcuts

Question : 11

Coarse-grain Parallelism

a) In parallel computing, it is a qualitative measure of the ratio of computation to communication

b) Here relatively small amounts of computational work are done between communication events

c) Relatively large amounts of computational work are done between communication / synchronization events

d) None of these

Question : 12

Parallel Execution

a) A sequential execution of a program, one statement at a time

b) Execution of a program by more than one task, with each task being able to execute the same or different statement at the same moment in time

c) A program or set of instructions that is executed by a processor.

d) None of these

Question : 13

In shared Memory:

a) Here all processors access, all memory as global address space

b) Here all processors have individual memory

c) Here some processors access, all memory as global address space and some not

d) None of these

Question : 14

Massively Parallel

a) Observed speedup of a code which has been parallelized, defined as: wall-clock time of serial execution and wall-clock time of parallel execution

b) The amount of time required to coordinate parallel tasks. It includes factors such as: Task start-up time, Synchronizations, Data communications.

c) Refers to the hardware that comprises a given parallel system - having many processors

d) None of these

Question : 15

Cache Coherent UMA (CC-UMA) is

a) Here all processors have equal access and access times to memory

b) Here if one processor updates a location in shared memory, all the other processors know about the update.

c) Here one SMP can directly access memory of another SMP and not all processors have equal access time to all memories

d) None of these