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Parallel Software Concepts Quiz

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Questions and Answers

What is the primary purpose of dividing work among processes/threads in parallel programs?

To minimize synchronization between processes/threads

So each process/thread gets roughly the same amount of work (correct)

To maximize communication between processes/threads

To allocate work based on the speed of each process/thread

What does SPMD stand for?

Single Program Multiple Data (correct)

Sequential Program Multiple Devices

Synchronized Parallel Memory Distribution

Shared Process Memory Distribution

What is the key aspect of writing parallel programs to minimize communication?

Using multiple processes for shared memory programs

Dividing the work so each process/thread gets roughly the same amount (correct)

Minimizing the number of conditional branches

Increasing synchronization between processes/threads

In shared memory programs, how are tasks carried out?

Start a single process and fork threads Signup and view all the answers

How does a SPMD program behave as if it were multiple different programs?

Through the use of conditional branches Signup and view all the answers

What is the first step in Foster’s methodology for parallel program design?

Partitioning Signup and view all the answers

What is the main focus when identifying tasks in the partitioning step of Foster’s methodology?

Identifying tasks that can be executed in parallel Signup and view all the answers

In Foster’s methodology, what is the purpose of agglomeration or aggregation?

Combine tasks and communications into larger tasks Signup and view all the answers

What is the purpose of the communication step in Foster’s methodology?

Determine communication needs among identified tasks Signup and view all the answers

What is the final step in Foster’s methodology for parallel program design?

Mapping Signup and view all the answers