Port 6445

Sun Grid Engine (SGE) provides a distributed resource management system suited for compute clusters. The Execution Service component listens on port 6445 and facilitates the distribution and execution of jobs submitted to the grid by users or automated workflows. It manages resource allocation based on configured policies, optimizes job placement on compute nodes, and monitors job status. Communication across the cluster utilizes standardized protocols, often involving both TCP and UDP for data transfer and control signals.

The Execution Service acts as the backend agent running on each compute node. Upon receiving job scheduling information from the master scheduler, it spawns processes, monitors resource consumption such as CPU, memory, I/O, and reports status updates back. This bi-directional communication ensures cluster-wide health visibility and helps maintain workload balance.

Sun Grid Engine is typically deployed in scientific, academic, and enterprise HPC environments for batch processing of intensive computational workloads. The design prioritizes scalability, fault tolerance, job prioritization, and flexible user management through its robust Execution Service architecture.