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A cluster is a group of interconnected computers, called nodes, that work together as a single, powerful system to perform tasks, improve performance, and provide high availability. These networks enhance scalability and reliability through distributed processing and load balancing, serving as a cost-effective alternative to traditional mainframes for applications like high-performance computing (HPC) and cloud computing.

Key Components and Concepts

Nodes: These are the individual computers or servers within the cluster that handle computing tasks.

Network Interconnect: A high-speed network connects the nodes, allowing them to communicate and coordinate their work efficiently.

Head Node: A point of access for users to log into the cluster, edit code, and submit jobs to the compute nodes.

Compute Nodes: The nodes where the actual computational work and job execution occurs.

Job Scheduler: Software that manages and distributes tasks among the compute nodes, ensuring resources are used effectively.