【Hackathon 9th No.31】Unit test for gptq_marlin_repack #3
Description
Add unit tests for the GPTQ Marlin weight repacking op.
Source: custom_ops/gpu_ops/moe/gptq_marlin_repack.cu
Registration: custom_ops/gpu_ops/cpp_extensions.cc
Test file: tests/operators/test_gptq_marlin_repack.py
Should verify that repacking produces the correct weight layout for Marlin GEMM kernels. Test with different quantization group sizes and weight matrix shapes.
Branch: task/031-gptq-marlin-repack-test