116 lines
3.1 KiB
C++
116 lines
3.1 KiB
C++
// Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
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// Updated 2021 by University of Bristol
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//
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// For full license terms please see the LICENSE file distributed with this
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// source code
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#include "STDDataStream.h"
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template <class T>
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STDDataStream<T>::STDDataStream(const int ARRAY_SIZE, int device)
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noexcept : array_size{ARRAY_SIZE},
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a(alloc_raw<T>(ARRAY_SIZE)), b(alloc_raw<T>(ARRAY_SIZE)), c(alloc_raw<T>(ARRAY_SIZE))
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{
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std::cout << "Backing storage typeid: " << typeid(a).name() << std::endl;
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#ifdef USE_ONEDPL
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std::cout << "Using oneDPL backend: ";
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#if ONEDPL_USE_DPCPP_BACKEND
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std::cout << "SYCL USM (device=" << exe_policy.queue().get_device().get_info<sycl::info::device::name>() << ")";
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#elif ONEDPL_USE_TBB_BACKEND
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std::cout << "TBB " TBB_VERSION_STRING;
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#elif ONEDPL_USE_OPENMP_BACKEND
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std::cout << "OpenMP";
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#else
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std::cout << "Default";
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#endif
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std::cout << std::endl;
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#endif
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}
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template<class T>
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STDDataStream<T>::~STDDataStream() {
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dealloc_raw(a);
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dealloc_raw(b);
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dealloc_raw(c);
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}
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template <class T>
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void STDDataStream<T>::init_arrays(T initA, T initB, T initC)
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{
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std::fill(exe_policy, a, a + array_size, initA);
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std::fill(exe_policy, b, b + array_size, initB);
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std::fill(exe_policy, c, c + array_size, initC);
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}
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template <class T>
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void STDDataStream<T>::read_arrays(std::vector<T>& h_a, std::vector<T>& h_b, std::vector<T>& h_c)
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{
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std::copy(a, a + array_size, h_a.begin());
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std::copy(b, b + array_size, h_b.begin());
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std::copy(c, c + array_size, h_c.begin());
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}
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template <class T>
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void STDDataStream<T>::copy()
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{
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// c[i] = a[i]
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std::copy(exe_policy, a, a + array_size, c);
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}
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template <class T>
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void STDDataStream<T>::mul()
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{
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// b[i] = scalar * c[i];
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std::transform(exe_policy, c, c + array_size, b, [scalar = startScalar](T ci){ return scalar*ci; });
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}
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template <class T>
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void STDDataStream<T>::add()
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{
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// c[i] = a[i] + b[i];
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std::transform(exe_policy, a, a + array_size, b, c, std::plus<T>());
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}
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template <class T>
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void STDDataStream<T>::triad()
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{
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// a[i] = b[i] + scalar * c[i];
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std::transform(exe_policy, b, b + array_size, c, a, [scalar = startScalar](T bi, T ci){ return bi+scalar*ci; });
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}
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template <class T>
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void STDDataStream<T>::nstream()
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{
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// a[i] += b[i] + scalar * c[i];
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// Need to do in two stages with C++11 STL.
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// 1: a[i] += b[i]
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// 2: a[i] += scalar * c[i];
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std::transform(exe_policy, a, a + array_size, b, a, [](T ai, T bi){ return ai + bi; });
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std::transform(exe_policy, a, a + array_size, c, a, [scalar = startScalar](T ai, T ci){ return ai + scalar*ci; });
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}
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template <class T>
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T STDDataStream<T>::dot()
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{
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// sum = 0; sum += a[i]*b[i]; return sum;
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return std::transform_reduce(exe_policy, a, a + array_size, b, T{});
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}
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void listDevices(void)
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{
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std::cout << "Listing devices is not supported by the Parallel STL" << std::endl;
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}
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std::string getDeviceName(const int)
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{
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return std::string("Device name unavailable");
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}
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std::string getDeviceDriver(const int)
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{
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return std::string("Device driver unavailable");
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}
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template class STDDataStream<float>;
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template class STDDataStream<double>;
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