transformers

8278b153 - improve efficient training on CPU documentation (#28646)

improve efficient training on CPU documentation (#28646) * update doc * revert * typo fix * refine * add dtypes * Update docs/source/en/perf_train_cpu.md Co-authored-by: Steven Liu <59462357+stevhliu@users.noreply.github.com> * Update docs/source/en/perf_train_cpu.md Co-authored-by: Steven Liu <59462357+stevhliu@users.noreply.github.com> * Update docs/source/en/perf_train_cpu.md Co-authored-by: Steven Liu <59462357+stevhliu@users.noreply.github.com> * no comma * use avx512-vnni --------- Co-authored-by: Steven Liu <59462357+stevhliu@users.noreply.github.com>