Default stream value

Accelerated Computing CUDA CUDA Programming and Performance
1

Hi I thought the default stream number is 0.

But why Nsight System displays the default stream as non-zero value? Yet when I tried to cudaStreamSychronize(0), it seems to do the things I expected.

Screen Shot 2022-07-19 at 5.01.39 PM
Screen Shot 2022-07-19 at 5.01.39 PM684Ă—898 168 KB

2

Because there is no connection between the stream “number” in API usage and the stream number reported by the profilers, including nsight systems. In the future, you may wish to ask nsight systems questions on the nsight systems forum.

1 Like
3

Thanks for the confirmation.