cutlass/include/cutlass/arch/arch.h

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/*! \file
    \brief Defines tags for architecture-specific configurations.
*/

#pragma once

#include "cutlass/cutlass.h"

////////////////////////////////////////////////////////////////////////////////////////////////////

namespace cutlass {
namespace arch {

#if defined(__NVCC__) || (defined(__clang__) && defined(__CUDA__))

/// Computes laneId within a warp
CUTLASS_DEVICE
int LaneId() {
  int ret;
  asm ("mov.u32 %0, %%laneid;" : "=r"(ret) : );
  return ret;
}

/// Computes SM number the thread is running on
CUTLASS_DEVICE
int SmId() {
  int ret;
  asm ("mov.u32 %0, %%smid;" : "=r"(ret) : );
  return ret;
}

#endif

////////////////////////////////////////////////////////////////////////////////////////////////////
struct Sm50 {
  static int const kMinComputeCapability = 50;
}; 
struct Sm60 {
  static int const kMinComputeCapability = 60;
}; 
struct Sm61 {
  static int const kMinComputeCapability = 61;
};
struct Sm70 {
  static int const kMinComputeCapability = 70;
};
struct Sm72 {
  static int const kMinComputeCapability = 72;
};
struct Sm75 {
  static int const kMinComputeCapability = 75;
};
struct Sm80 {
  static int const kMinComputeCapability = 80; 
};
struct Sm86 {
  static int const kMinComputeCapability = 86;
};
struct Sm90 {
  static int const kMinComputeCapability = 90; 
};

/// Triggers a breakpoint on the device
CUTLASS_DEVICE
void device_breakpoint() {
#if defined(__CUDA_ARCH__)
  asm volatile ("  brkpt;\n");
#endif
}

////////////////////////////////////////////////////////////////////////////////////////////////////

} // namespace arch
} // namespace cutlass

////////////////////////////////////////////////////////////////////////////////////////////////////