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/* ************************************************************************
* Copyright (C) 2016-2024 Advanced Micro Devices, Inc. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* ************************************************************************ */
#include <stdio.h>
#include <stdlib.h>
#include <vector>
#include "hipblas_init.hpp"
#include "utility.h"
#include <hip/hip_bfloat16.h>
#include <hipblas/hipblas.h>
#ifndef CHECK_HIP_ERROR
#define CHECK_HIP_ERROR(error) \
if(error != hipSuccess) \
{ \
fprintf(stderr, \
"Hip error: '%s'(%d) at %s:%d\n", \
hipGetErrorString(error), \
error, \
__FILE__, \
__LINE__); \
exit(EXIT_FAILURE); \
}
#endif
#ifndef CHECK_HIPBLAS_ERROR
#define CHECK_HIPBLAS_ERROR(error) \
if(error != HIPBLAS_STATUS_SUCCESS) \
{ \
fprintf(stderr, "hipBLAS error: "); \
if(error == HIPBLAS_STATUS_NOT_INITIALIZED) \
fprintf(stderr, "HIPBLAS_STATUS_NOT_INITIALIZED"); \
if(error == HIPBLAS_STATUS_ALLOC_FAILED) \
fprintf(stderr, "HIPBLAS_STATUS_ALLOC_FAILED"); \
if(error == HIPBLAS_STATUS_INVALID_VALUE) \
fprintf(stderr, "HIPBLAS_STATUS_INVALID_VALUE"); \
if(error == HIPBLAS_STATUS_MAPPING_ERROR) \
fprintf(stderr, "HIPBLAS_STATUS_MAPPING_ERROR"); \
if(error == HIPBLAS_STATUS_EXECUTION_FAILED) \
fprintf(stderr, "HIPBLAS_STATUS_EXECUTION_FAILED"); \
if(error == HIPBLAS_STATUS_INTERNAL_ERROR) \
fprintf(stderr, "HIPBLAS_STATUS_INTERNAL_ERROR"); \
if(error == HIPBLAS_STATUS_NOT_SUPPORTED) \
fprintf(stderr, "HIPBLAS_STATUS_NOT_SUPPORTED"); \
if(error == HIPBLAS_STATUS_INVALID_ENUM) \
fprintf(stderr, "HIPBLAS_STATUS_INVALID_ENUM"); \
if(error == HIPBLAS_STATUS_UNKNOWN) \
fprintf(stderr, "HIPBLAS_STATUS_UNKNOWN"); \
fprintf(stderr, "\n"); \
exit(EXIT_FAILURE); \
}
#endif
/* ============================================================================================ */
template <typename T>
float bfloat16_to_float_helper(T bf)
{
union
{
uint32_t int32;
float fp32;
} u = {uint32_t(bf.data) << 16};
return u.fp32;
}
// if just using host compiler with hip_bfloat16, hip gives minimum definition of bfloat16, so doing
// most of the work in fp32
void reference_bfdot(
int n, hipblasBfloat16* hx, int incx, hipblasBfloat16* hy, int incy, hipblasBfloat16* res)
{
float tmp = 0;
for(int i = 0; i < n; i++)
tmp += bfloat16_to_float(hx[i * size_t(incx)]) * bfloat16_to_float(hy[i * size_t(incy)]);
*res = float_to_bfloat16(tmp);
}
int main()
{
int N = 1024;
int incx = 1;
int incy = 1;
hipblasStatus_t status;
// Naming: dX is in GPU (device) memory. hK is in CPU (host) memory, plz follow this practice
std::vector<hip_bfloat16> hx(N);
std::vector<hip_bfloat16> hy(N);
hip_bfloat16* dx;
hip_bfloat16* dy;
size_t x_size = N * size_t(incx);
size_t y_size = N * size_t(incy);
double gpu_time_used;
hipblasHandle_t handle;
hipblasCreate(&handle);
// allocate memory on device
CHECK_HIP_ERROR(hipMalloc(&dx, x_size * sizeof(hip_bfloat16)));
CHECK_HIP_ERROR(hipMalloc(&dy, y_size * sizeof(hip_bfloat16)));
// Initial Data on CPU
// Initializes in range of [1, 3]
// hipblasBfloat16 and hip_bfloat16 have same format, can be casted to use our helper functions
srand(1);
hipblas_init<hipblasBfloat16>((hipblasBfloat16*)hx.data(), 1, N, incx);
hipblas_init<hipblasBfloat16>((hipblasBfloat16*)hy.data(), 1, N, incy);
hip_bfloat16 hipblas_result, gold_result;
CHECK_HIP_ERROR(hipMemcpy(dx, hx.data(), x_size * sizeof(hip_bfloat16), hipMemcpyHostToDevice));
CHECK_HIP_ERROR(hipMemcpy(dy, hy.data(), y_size * sizeof(hip_bfloat16), hipMemcpyHostToDevice));
printf("N hipblas(us) \n");
gpu_time_used = get_time_us(); // in microseconds
/* =====================================================================
HIPBLAS C interface
=================================================================== */
status = hipblasSetPointerMode(handle, HIPBLAS_POINTER_MODE_HOST);
if(status != HIPBLAS_STATUS_SUCCESS)
{
CHECK_HIP_ERROR(hipFree(dx));
CHECK_HIP_ERROR(hipFree(dy));
hipblasDestroy(handle);
return status;
}
#ifdef HIPBLAS_USE_HIP_BFLOAT16
status = hipblasBfdot(handle, N, dx, incx, dy, incy, &hipblas_result);
#else
// without exposing hip_bfloat16 interface, we can cast to hipblasBfloat16 pointers
status = hipblasBfdot(handle,
N,
(hipblasBfloat16*)dx,
incx,
(hipblasBfloat16*)dy,
incy,
(hipblasBfloat16*)(&hipblas_result));
#endif
if(status != HIPBLAS_STATUS_SUCCESS)
{
CHECK_HIP_ERROR(hipFree(dx));
CHECK_HIP_ERROR(hipFree(dy));
hipblasDestroy(handle);
return status;
}
gpu_time_used = get_time_us() - gpu_time_used;
// verify hipblas_bfdot result
reference_bfdot(N,
(hipblasBfloat16*)hx.data(),
incx,
(hipblasBfloat16*)hy.data(),
incy,
(hipblasBfloat16*)(&gold_result));
float gold_resf = bfloat16_to_float_helper((gold_result));
float hip_resf = bfloat16_to_float_helper((hipblas_result));
float diff = std::abs(gold_resf - hip_resf);
printf("%d %8.2f \n", (int)N, gpu_time_used);
if(diff)
{
printf("CPU RESULT: %f, GPU_RESULT: %f\n", gold_resf, hip_resf);
printf("BFDOT TEST FAILS\n");
}
else
{
printf("BFDOT TEST PASSES\n");
}
CHECK_HIP_ERROR(hipFree(dx));
CHECK_HIP_ERROR(hipFree(dy));
hipblasDestroy(handle);
return EXIT_SUCCESS;
}
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