sgl-project--sglang/sgl-kernel/csrc/cutlass_extensions/common.hpp

#pragma once

#include "cuda_runtime.h"
#include "cutlass/cutlass.h"

/**
 * A wrapper for a kernel that is used to guard against compilation on
 * architectures that will never use the kernel. The purpose of this is to
 * reduce the size of the compiled binary.
 * __CUDA_ARCH__ is not defined in host code, so this lets us smuggle the ifdef
 * into code that will be executed on the device where it is defined.
 */
template <typename Kernel>
struct enable_sm90_or_later : Kernel {
  template <typename... Args>
  CUTLASS_DEVICE void operator()(Args&&... args) {
#if defined __CUDA_ARCH__ && __CUDA_ARCH__ >= 900
    Kernel::operator()(std::forward<Args>(args)...);
#endif
  }
};