What is the difference between TensorOp and WmmaTensorOp?

[armbuster]

In this page, in the column for "Opcode Class" in the listing of CUTLASS kernels, two of the options are TensorOp and WmmaTensorOp, I am wondering if someone could distinguish these for me.

I assume WmmaTensorOp uses (nvcuda::wmma)[https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#warp-matrix-functions] to access tensor cores? If this is true then how to the TensorOp kernels access Tensor Cores?

[hwu36]

WmmaTensorOp uses wmma.mma, and TensorOp uses mma in this ptx doc . The former is easier to use, the latter is faster.