parallel computing set 2 Detailed Explanation And More Example

Question : 1

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.

a) Single Program Multiple Data (SPMD)

b) Flynn’s taxonomy

c) Von Neumann Architecture

d) None of these

Question : 2

Synchronous communications

a) It require some type of “handshaking” between tasks that are sharing dat(A) This can be explicitly structured in code by the programmer, or it may happen at a lower level unknown to the programmer.

b) It involves data sharing between more than two tasks, which are often specified as being members in a common group, or collective.

c) It involves two tasks with one task acting as the sender/producer of data, and the other acting as the receiver/consumer.

d) It allows tasks to transfer data independently from one another.

Question : 3

Latency is

a) Partitioning in that the data associated with a problem is decompose(D) Each parallel task then works on a portion of the dat(A)

b) Partitioning in that, the focus is on the computation that is to be performed rather than on the data manipulated by the computation. The problem is decomposed according to the work that must be done. Each task then performs a portion of the overall work.

c) It is the time it takes to send a minimal (0 byte) message from one point to other point

d) None of these

Question : 4

Parallel Overhead is

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 : 5

Synchronous communication operations referred to

a) Involves only those tasks executing a communication operation

b) It exists between program statements when the order of statement execution affects the results of the program.

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.

d) None of these

Question : 6

It is the simultaneous use of multiple compute resources to solve a computational problem

a) Parallel computing

b) Single processing

c) Sequential computing

d) None of these