Support for MXFP8 on 12.0+ architectures

[yuqie]

Is your feature request related to a problem? Please describe.
Hi @mcore-oncall , an error occurs when I use FMXP8 on RTX PRO 6000:

AssertionError: MXFP8 (for all gemm layouts) is not supported on 12.0+ architectures yet.

Do you have a plan to support MXFP8 on 12.0+ architectures? If the answer is yes, could you please share the planned timeline for it?

[sbhavani]

@yuqie we are still adding SM120 / RTX Pro 6000 support in Transformer Engine. I'll get back to you shortly with a planned timeline once we have some initial PRs for this support.