What is parallel workload serialization bottleneck?

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What is parallel workload serialization bottleneck?

The parallel workload serialization bottleneck refers to a situation in parallel computing where the execution of a parallel workload is limited or slowed down due to the need for certain tasks or operations to be executed sequentially or in a serialized manner. This can occur when there are dependencies or interdependencies between tasks that require them to be executed in a specific order, leading to a bottleneck in the overall parallel execution. It can significantly impact the performance and efficiency of parallel computing systems.