Flow and events in Cuda

Flow: The Cuda stream is much like a CPU thread, and the operations in a cuda stream are sequential and coarse-grained to manage the concurrent execution of multiple processing units.

In layman's terms, the flow is used for parallel operations, such as processing the same image, you use a stream to process the left half of the picture, and then the second stream to process the right half of the picture, the two streams of code executed simultaneously, speeding up processing speed.

Event: Recording Cuda events is a way for the application to track progress in a cuda stream.

In layman's parlance, events are used to time the algorithm, you set an event before the algorithm starts, set an event at the end of the algorithm, and the two-event difference is the algorithm execution times.

Flow and events in Cuda