4.2

Multicore System

A computing system that has multiple cores, each acting as a separate CPU to the operating system.

Concurrency

The execution of multiple tasks making progress over time, often interleaved on a single core.

Parallelism

The simultaneous execution of multiple tasks, typically across separate cores.

Data Parallelism

Distributing subsets of the same data across multiple cores for processing.

Task Parallelism

Distributing distinct tasks across multiple cores, where each performs a unique operation.

Hybrid Parallelism

An approach that combines both data parallelism and task parallelism for optimal performance.

Programming Challenges in Multicore Systems

Includes identifying tasks, ensuring balanced workloads, managing data dependencies, and testing/debugging complexities.

Data Dependency

The relationship between tasks where one task relies on the data produced by another, requiring proper synchronization.

Impact on Software Development

The need to rethink traditional software design for effective use of multicore systems, focusing on parallel programming.