Add a flag

CMakeLists.txt

@@ -210,6 +210,10 @@ if (SUPPORTED_GPU_TARGETS MATCHES "gfx90a" OR SUPPORTED_GPU_TARGETS MATCHES "gfx
     add_definitions(-DCK_USE_FNUZ_FP8)
     set(CK_USE_FNUZ_FP8 "ON")
 endif()
+if (SUPPORTED_GPU_TARGETS MATCHES "gfx950")
+    add_definitions(-DCK_USE_NATIVE_MX_SUPPORT)
+    set(CK_USE_NATIVE_MX_SUPPORT "ON")
+endif()
 
 option(CK_USE_FP8_ON_UNSUPPORTED_ARCH "Enable FP8 GEMM instances on older architectures" OFF)
 if(CK_USE_FP8_ON_UNSUPPORTED_ARCH AND (SUPPORTED_GPU_TARGETS MATCHES "gfx90a" OR SUPPORTED_GPU_TARGETS MATCHES "gfx908"))

include/ck/utility/mxfp_utils.hpp

 // SPDX-License-Identifier: MIT
-// Copyright (c) 2024, Advanced Micro Devices, Inc. All rights reserved.
+// Copyright (c) 2024-2025, Advanced Micro Devices, Inc. All rights reserved.
 
 #pragma once
 
+#ifdef CK_USE_NATIVE_MX_SUPPORT
+#define CK_USE_NATIVE_MX_SUPPORT 1
+#else
+#define CK_USE_NATIVE_MX_SUPPORT 0
+#endif
+
 namespace ck::utils {
 
 union cvt