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Tetra: Serving Leech-Lattice Quantized LLMs at 2.7 Bits per Parameter

Malandrino, Pier-Jean
arXiv (All) · Papers
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Leech-lattice quantization gives good quality at two bits per weight, but its codebooks hold more than 10^14 points, too many for a lookup table. Our earlier kernel expanded the codes at load time and read 4.804 bits per weight from GPU memory for 2 bits of code. We present Tetra, a new codebook on
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