Each processor or core processes two threads at the same time is called

Parallelism

Explanation:

Each processor or core processes two threads at the same time is called parallelism.

Parallelism in computing refers to the improvement of performance. In fact parallelism is the mechanism in which multiple computing tasks can be processed at the same time. In synthesis in parallel executions every single task is split into multiple core processes in which every sub-task is executed at the same time.

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