[KV Cache] support kv cache int8 per channel quant #398
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This was referenced Jul 19, 2025
Signed-off-by: evian <[email protected]>
dsikka
requested changes
Jul 31, 2025
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| expected_shape = 1 # per tensor | ||
| if quantization_args.strategy == QuantizationStrategy.CHANNEL: | ||
| expected_shape = module.k_proj.out_features |
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If channel wise quantization - this should be 2D
Please refer to the init here; https://github.com/neuralmagic/compressed-tensors/blob/3d49764c02d4d9437e59d35f8c49abb5bc94636c/src/compressed_tensors/quantization/lifecycle/initialize.py#L175
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kv cache quant int8 per channel is supported using this pr.
Besieds, llm-compressor needs to be updated as well: vllm-project/llm-compressor#1663