Support w4a8 marlin gemm #31
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Hello, you guys did an excellent work! I supported w4a8 marlin based your code and achieved a considerable speedup. The main idea can refer to Section 3.3 of our paper QQQ. You can use bench_w4a8.py to benchmark the w4a8 performance and use test_w4a8.py to verify the correctness. Here we provide the benchmark results on A100.
