What are the examples of parallel algorithm?

Examples of Parallel Algorithms

• Primes.
• Sparse Matrix Multiplication.
• Planar Convex-Hull.
• Three Other Algorithms.

How do you write a parallel algorithm?

Parallel Algorithm − The problem is divided into sub-problems and are executed in parallel to get individual outputs. Later on, these individual outputs are combined together to get the final desired output.

What is concurrent algorithm?

In computer science, concurrency is the ability of different parts or units of a program, algorithm, or problem to be executed out-of-order or at the same time simultaneously partial order, without affecting the final outcome.

What do parallel algorithms need to optimize for?

Parallel algorithms need to optimize one more resource, the communication between different processors. There are two ways parallel processors communicate, shared memory or message passing.

Which is an example of a parallel problem?

 In so-called embarrassingly parallel problems, a computation consists of a number of tasks that can execute more or less independently, without communication. These problems are usually easy to adapt for parallel execution.

How does the parallel algorithm decide the volume of traffic?

Designs of parallel processors use special buses like crossbar so that the communication overhead will be small but it is the parallel algorithm that decides the volume of the traffic. If the communication overhead of additional processors outweighs the benefit of adding another processor, one encounters parallel slowdown .

What are the two ways parallel processors communicate?

There are two ways parallel processors communicate, shared memory or message passing. Shared memory processing needs additional locking for the data, imposes the overhead of additional processor and bus cycles, and also serializes some portion of the algorithm.