Parallel Algorithms and PRAM

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Questions and Answers

Which machine is the PRAM intended to model algorithmic performance after?

Random-access machine (RAM) (correct)
Main memory
Cache memory
Sequential algorithm

What does the PRAM model neglect in order to provide any number of processors?

Access time to cache memory
Algorithm cost
Synchronization and communication (correct)
Access time to main memory

What is used by sequential-algorithm designers to model algorithmic performance?

Cache memory
Main memory
RAM (correct)
PRAM

What is estimated using parameters O(time) and O(time × processor_n)?

<p>Algorithm cost (B)</p> Signup and view all the answers

What does the RAM model neglect, similar to the PRAM model?

<p>Practical issues such as access time to cache memory versus main memory (C)</p> Signup and view all the answers

Study Notes

Parallel Random Access Machine (PRAM)

The PRAM is intended to model algorithmic performance after an idealized parallel machine.
The PRAM model neglects synchronization and communication delays between processors in order to provide any number of processors.
It is used by parallel-algorithm designers to model algorithmic performance.

Sequential Algorithm Design

Sequential-algorithm designers use the RAM (Random Access Machine) model to model algorithmic performance.

Algorithmic Performance Estimation

Algorithmic performance is estimated using parameters O(time) and O(time × processor_n), which represent the time complexity and processor complexity respectively.

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Description

Test your knowledge on abstract computers for designing parallel algorithms with this quiz. Learn about parallel random-access machines (PRAM) and how they are used in parallel-computing. Test your understanding of PRAM's relation to random-access machines (RAM) and its significance in sequential-algorithm design.