Handle GPTQ-Marlin loading in GPTQMarlinWeightLoader
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The `GPTWeightLoader` was structured like this in pseudocode: if marlin: Set up tensors in a way that GPTQ-Marlin expects else: Set up tensors in a way that ExLlama/GPTQ/AWQ expect However, the GPT-Marlin implementation details should really be in the `marlin` module. So move the former part out to a separate `GPTQMarlinWeightsLoader`.
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What does this PR do?
The
GPTWeightLoaderwas structured like this in pseudocode:However, the GPT-Marlin implementation details should really be in the
marlinmodule. So move the former part out to a separateGPTQMarlinWeightsLoader.Before submitting
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