Unverified50% confidenceFactExact time
FP8 training schemes typically use E4M3 for the forward pass and E5M2 for the backward pass.
1
Sources
50%
Confidence
Long-term
Relevance
8/31/2026
First Seen
Sources
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Related Claims
UnverifiedFP8 has two main sub-formats — E4M3 (4-bit exponent + 3-bit mantissa) and E5M2 (5-bit exponent + 2-bit mantissa) — optimized for forward propagation and backward propagation respectively.74% similarVerifiedFP8 was first introduced with hardware support by NVIDIA in the H100 architecture, with two subtypes: E4M3 and E5M2.66% similar
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