convert: (demo) repacking compressed_tensor format of kimi-k2 #17083
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This PR is a demo. It will definitely break models other than kimi-k2
IMPORTANT: This requires deleting the
"quantization_config"section inconfig.json; You can also rename it:How it works: we map int4 --> GGML's Q4_0; the original scale is BF16, and will be converted to F16 (as Q4_0 only support F16)
TODO: correct the nibble layout, seems to be reversed order
cc @jukofyork