Summary
A new lossless 12-bit BF16 compression format for AI model weights has been developed, replacing the 8-bit exponent with a 4-bit group code. This GPU-friendly format (for AMD & NVIDIA) achieves true 12-bit storage per weight, eliminating padding waste and HBM read amplification. Decoding is highly efficient, requiring just one integer ADD for 99.97% of weights.
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