[CUDA] Add build flag onnxruntime_USE_FPA_INTB_GEMM #25802
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gedoensmax
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### Description Add a build flag to enable/disable mixed gemm cutlass kernel. To disable the kernel, you can append the following at the end of build command line: `--cmake_extra_defines onnxruntime_USE_FPA_INTB_GEMM=OFF` ### Motivation and Context FpA IntB Gemm need a lot of time to compile. With such option, developer can speed up the build especially on build machine with limited memory.
snnn
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### Description Add a build flag to enable/disable mixed gemm cutlass kernel. To disable the kernel, you can append the following at the end of build command line: `--cmake_extra_defines onnxruntime_USE_FPA_INTB_GEMM=OFF` ### Motivation and Context FpA IntB Gemm need a lot of time to compile. With such option, developer can speed up the build especially on build machine with limited memory.
snnn
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Sep 19, 2025
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Description
Add a build flag to enable/disable mixed gemm cutlass kernel.
To disable the kernel, you can append the following at the end of build command line:
--cmake_extra_defines onnxruntime_USE_FPA_INTB_GEMM=OFFMotivation and Context
FpA IntB Gemm need a lot of time to compile. With such option, developer can speed up the build especially on build machine with limited memory.