FP8 is All You Need (Part 1) debunking Hardware FP64 as the HPC Holy Grail
The practical implication is that the post-fp64stack—Ozaki II for matrix and stencil work, Ozaki–Bailey + Kulisch Phase B for spectral work,FP32+Kahan for reductions, and the discipline of register-level fusion to keep β → 1—is endto-end sufficient for the broad majority of scientific simulation codes.