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INT3 compression+fused metal kernels [R]

INT3 compression with fused Metal kernels enables large language models to compute attention operations directly on compressed (INT3/INT4) key-value cache representations using custom GPU kernels that

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INT3 compression with fused Metal kernels enables large language models to compute attention operations directly on compressed (INT3/INT4) key-value cache representations using custom GPU kernels that eliminate intermediate dequantization steps. This approach achieves significant speedups (up to 48x) and memory savings (3.2x compression) compared to standard dequantize-then-attend pipelines, enabling long-context inference on consumer hardware.

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Source: r/MachineLearning | 2026-04-22

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