[Int4-AWQ] Torch Int-4 AWQ Dequantization and Configuration Options#146
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This PR creates a fully general Int4-AWQ dequantization function which uses torch and adds environment options (flags) for controlling torch-vs-triton codepaths.
Testing: Two HuggingFace models quantized in Int4-AWQ format have been successfully run:
Qwen2-7B-Instruct-AWQ (Latency benchmarking)
Phi-3-mini-4k-instruct-AWQ (Input verification)
For the latter model, specific input prompts were supplied and the output examined, in order to provide a sanity check for correctness.
Unit testing is accomplished via tests/kernels/test_awq_triton.py.
Resolves: https://github.com/ROCm/FasterTransformer-Internal/issues/287