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Revert "Merge pull request #3017 from JieyangChen7/fix-gpu-library-conflict-issue" #3022

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Revert "Merge pull request #3017 from JieyangChen7/fix-gpu-library-conflict-issue" #3022

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12 changes: 8 additions & 4 deletions source/adios2/helper/adiosCUDA.cu
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Original file line number Diff line number Diff line change
Expand Up @@ -12,18 +12,22 @@
#define ADIOS2_HELPER_ADIOSCUDA_CU_

#include "adios2/common/ADIOSMacros.h"
#include <thrust/device_ptr.h>
#include <thrust/extrema.h>

#include "adiosCUDA.h"
#include "adiosCUDAReduceImpl.h"

namespace
{

template <class T>
void CUDAMinMaxImpl(const T *values, const size_t size, T &min, T &max)
{
min = reduce<T, MinOp>(size, 1024, 64, 1, values);
max = reduce<T, MaxOp>(size, 1024, 64, 1, values);
thrust::device_ptr<const T> dev_ptr(values);
auto res = thrust::minmax_element(dev_ptr, dev_ptr + size);
cudaMemcpy(&min, thrust::raw_pointer_cast(res.first), sizeof(T),
cudaMemcpyDeviceToHost);
cudaMemcpy(&max, thrust::raw_pointer_cast(res.second), sizeof(T),
cudaMemcpyDeviceToHost);
}
// types non supported on the device
void CUDAMinMaxImpl(const long double * /*values*/, const size_t /*size*/,
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