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// Copyright (C) 2021 - 2022 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 <iostream>
#include <vector>
#include <hip/hip_runtime.h>
#include <hipfft/hipfft.h>
#include <hipfft/hipfftXt.h>
#include "../hipfft_params.h"
struct load_cbdata
{
hipfftDoubleComplex* filter;
double scale;
};
__device__ hipfftDoubleComplex load_callback(hipfftDoubleComplex* input,
size_t offset,
void* cbdata,
void* sharedMem)
{
auto data = static_cast<load_cbdata*>(cbdata);
// NB: for optimal performance, one may need a custom
// multiplication operator.
return hipCmul(hipCmul(input[offset], data->filter[offset]),
make_hipDoubleComplex(data->scale, 0));
}
__device__ auto load_callback_dev = load_callback;
int main()
{
std::cout << "hipfft 1D double-precision complex-to-complex transform with callback\n";
const int Nx = 8;
int direction = HIPFFT_FORWARD; // forward=-1, backward=1
std::vector<hipfftDoubleComplex> cdata(Nx), filter(Nx);
size_t complex_bytes = sizeof(decltype(cdata)::value_type) * cdata.size();
// Create HIP device object and copy data to device
// Use hipfftComplex for single-precision
hipError_t hip_rt;
hipfftDoubleComplex *x, *filter_dev;
hip_rt = hipMalloc(&x, complex_bytes);
if(hip_rt != hipSuccess)
throw std::runtime_error("hipMalloc failed");
hip_rt = hipMalloc(&filter_dev, complex_bytes);
if(hip_rt != hipSuccess)
throw std::runtime_error("hipMalloc failed");
// Initialize the data and filter
for(size_t i = 0; i < Nx; i++)
{
cdata[i].x = i;
cdata[i].y = i;
filter[i].x = rand() / static_cast<double>(RAND_MAX);
filter[i].y = 0;
}
hip_rt = hipMemcpy(x, cdata.data(), complex_bytes, hipMemcpyHostToDevice);
if(hip_rt != hipSuccess)
throw std::runtime_error("hipMemcpy failed");
hip_rt = hipMemcpy(filter_dev, filter.data(), complex_bytes, hipMemcpyHostToDevice);
if(hip_rt != hipSuccess)
throw std::runtime_error("hipMemcpy failed");
std::cout << "input:\n";
for(size_t i = 0; i < cdata.size(); i++)
{
std::cout << "(" << cdata[i].x << ", " << cdata[i].y << ") ";
}
std::cout << std::endl;
// Create the plan
hipfftHandle plan = hipfft_params::INVALID_PLAN_HANDLE;
hipfftResult hipfft_rt = hipfftCreate(&plan);
if(hipfft_rt != HIPFFT_SUCCESS)
throw std::runtime_error("failed to create plan");
hipfft_rt = hipfftPlan1d(&plan, // plan handle
Nx, // transform length
HIPFFT_Z2Z, // transform type (HIPFFT_C2C for single-precision)
1); // number of transforms
if(hipfft_rt != HIPFFT_SUCCESS)
throw std::runtime_error("hipfftPlan1d failed");
// prepare callback
load_cbdata cbdata_host;
cbdata_host.filter = filter_dev;
cbdata_host.scale = 1.0 / static_cast<double>(Nx);
void* cbdata_dev;
hip_rt = hipMalloc(&cbdata_dev, sizeof(load_cbdata));
if(hip_rt != hipSuccess)
throw std::runtime_error("hipMalloc failed");
hip_rt = hipMemcpy(cbdata_dev, &cbdata_host, sizeof(load_cbdata), hipMemcpyHostToDevice);
if(hip_rt != hipSuccess)
throw std::runtime_error("hipMemcpy failed");
void* cbptr_host = nullptr;
hip_rt = hipMemcpyFromSymbol(&cbptr_host, HIP_SYMBOL(load_callback_dev), sizeof(void*));
if(hip_rt != hipSuccess)
throw std::runtime_error("hipMemcpyFromSymbol failed");
// set callback
hipfft_rt = hipfftXtSetCallback(plan, &cbptr_host, HIPFFT_CB_LD_COMPLEX_DOUBLE, &cbdata_dev);
if(hipfft_rt != HIPFFT_SUCCESS)
throw std::runtime_error("hipfftXtSetCallback failed");
// Execute plan:
// hipfftExecZ2Z: double precision, hipfftExecC2C: for single-precision
hipfft_rt = hipfftExecZ2Z(plan, x, x, direction);
if(hipfft_rt != HIPFFT_SUCCESS)
throw std::runtime_error("hipfftExecZ2Z failed");
std::cout << "output:\n";
hip_rt = hipMemcpy(cdata.data(), x, complex_bytes, hipMemcpyDeviceToHost);
if(hip_rt != hipSuccess)
throw std::runtime_error("hipMemcpy failed");
for(size_t i = 0; i < cdata.size(); i++)
{
std::cout << "(" << cdata[i].x << ", " << cdata[i].y << ") ";
}
std::cout << std::endl;
hipfftDestroy(plan);
hip_rt = hipFree(cbdata_dev);
if(hip_rt != hipSuccess)
throw std::runtime_error("hipFree failed");
hip_rt = hipFree(filter_dev);
if(hip_rt != hipSuccess)
throw std::runtime_error("hipFree failed");
hip_rt = hipFree(x);
if(hip_rt != hipSuccess)
throw std::runtime_error("hipFree failed");
return 0;
}
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