Study of a real time feed-back system by the pipeline distributed parallel processing

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A software framework with a capability of the high-speed distributed pipeline parallel processing is developed. The framework consists of the“core framework”, which takes care of the pipeline parallel processing in a multi-core CPU, and the outer framework to connect PC servers over network extending the parallel processing to the PC cluster. The parallel processing performance provided by the developed framework is studied using the High Level Trigger test bench of Belle II experiment, and it is confirmed that the framework can achieve the expected performance. The system is now being implemented in the Belle II data acquisition system.