Please provide complete information as applicable to your setup.

• Hardware Platform (Jetson / GPU) GPU
• DeepStream Version Docker DS6.3
• JetPack Version (valid for Jetson only)
• TensorRT Version
• NVIDIA GPU Driver Version (valid for GPU only)
• Issue Type( questions, new requirements, bugs)
• How to reproduce the issue ? (This is for bugs. Including which sample app is using, the configuration files content, the command line used and other details for reproducing)
• Requirement details( This is for new requirement. Including the module name-for which plugin or for which sample application, the function description)

I found cudaEventSynchronize inside this function nvdsinfer_context_impl.cpp and I want to know what it does? Is it a step to copy the data obtained from GPU inference to CPU for post-processing?

There is no update from you for a period, assuming this is not an issue anymore. Hence we are closing this topic. If need further support, please open a new one. Thanks

It is a CUDA API. Please refer to CUDA document. CUDA Runtime API :: CUDA Toolkit Documentation ( or you can go to CUDA forum for more detail and resources. Latest CUDA/CUDA Programming and Performance topics - NVIDIA Developer Forums

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