TheRock/rocm-libraries/projects/rocwmma/test/dlrm/device/common.hpp

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#ifndef DLRM_TEST_DEVICE_COMMON_HPP
#define DLRM_TEST_DEVICE_COMMON_HPP

#include <rocwmma/internal/types.hpp>

namespace rocwmma
{

#if !ROCWMMA_TESTS_NO_HALF
    __device__ inline bool is_equal(half a, half b)
    {
        return __heq(a, b);
    }
#endif // !ROCWMMA_NO_HALF

    __device__ inline bool is_equal(float a, float b)
    {
        return a == b;
    }

    template <typename DataT>
    __device__ inline void store(DataT* dst, float* src)
    {
        if(std::is_same<DataT, float16_t>::value)
            *dst = __float2half(*src);
        else
            *dst = *src;
    }

    template <typename DataT>
    __device__ inline void store(DataT* dst, const float src)
    {
        if(std::is_same<DataT, float16_t>::value)
            *dst = __float2half(src);
        else
            *dst = src;
    }

    template <typename T, uint THREADBLOCK_SIZE>
    __global__ __launch_bounds__(THREADBLOCK_SIZE) void allclose_kernel(T*     a,
                                                                        T*     b,
                                                                        size_t num_elm,
                                                                        float* abs_diff,
                                                                        float* rel_diff,
                                                                        float* a_float,
                                                                        float* b_float)
    {
        int    tid      = threadIdx.x;
        int    nthreads = blockDim.x;
        size_t start    = (num_elm * tid) / nthreads;
        size_t end      = (num_elm * (tid + 1)) / nthreads;
        for(size_t i = start; i < end; i++)
        {
            if(!is_equal(a[i], b[i]))
            {
                float a_    = (float)a[i];
                float b_    = (float)b[i];
                a_float[i]  = a_;
                b_float[i]  = b_;
                abs_diff[i] = fabs(a_ - b_);
                if(a_ != 0.0f)
                {
                    rel_diff[i] = abs_diff[i] / fabs(a_);
                }
                else
                {
                    rel_diff[i] = 0.0f;
                }
            }
            else
            {
                abs_diff[i] = 0.0f;
                rel_diff[i] = 0.0f;
            }
        }
    }

} // namespace rocwmma

#endif // DLRM_TEST_DEVICE_COMMON_HPP