an individual processing unit within a multicore processor or a computer’s central processing unit (CPU). It represents an independent unit capable of executing instructions and performing computations.

In modern HPC systems, CPUs are designed with multiple cores, allowing for parallel processing and the simultaneous execution of multiple tasks. Each core typically operates independently and can handle its own set of instructions and data. This parallelism enables HPC systems to process a large volume of data and perform complex calculations more efficiently.