Which stream will be synchronized when ‘.cuda()’ is called? The current stream or all the streams?

1

Hi,
I hope to transfor data from cpu to gpu in the current stream, and synchronize the current stream.
So I wonder which stream will be synchronized when ‘.cuda()’ is called? The current stream? or it just act as torch.cuda.synchronize()?

2

The copy kernel should use the current stream as seen here in copy_kernel_cuda.