kernel in cuDNN

Why there is no PTX code founded for some of the kernels in cuDNN?

Example:

The “volta_fp16_s884cudnn_fp16_128x128_ldg8_relu_f2f_exp_small_nhwc_tn_v1” only has SASS code, no PTX. It means this kernel is coded with SASS ?

Yes, that kernel is coded with SASS code.

Thanks