All buffers used for memcpy are pinned, I am sure. For each kernel, there is 256 threads in a block and 5 blocks in a grid. You can see none operations in streams are overlapped. I attached the timeline of processing 10 tasks. Operations to obtain implicit groups defined by the CUDA launch API (e.g.
The problem is that operations in different streams are not overlapping. , 7 can be obtained via nvprof by nvprof. Many nvprof switches are not supported by nsys, often because they are now part of NVIDIA Nsight Compute. The main pipeline logic is in the following. either CUDA LAUNCH BLOCKING1 for GPUs using CUDA or OMP NUM THREADS1 for. The nvprof command of the Nsight Systems CLI is intended to help former nvprof users transition to nsys. at which point nvprof will show us the profiling results for our function. =27044= Warning: Unified Memory Profiling is not supported on this device. =27044= NVPROF is profiling process 27044, command. nvprof: Summary of OpenACC activities with their inclusive and exclusive time Trace of activities along with CUDA API calls and GPU activities, including CUDA device/ctx/stream info, data transfer sizes, etc.
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