Removed the sycl include from Eigen/Core and moved it to Unsupported/Eigen/CXX11/Tensor; added TensorReduction for sycl (full reduction and partial reduction); added TensorReduction test case for sycl (full reduction and partial reduction); fixed the tile size on TensorSyclRun.h based on the device max work group size;

This commit is contained in:
Mehdi Goli 2016-11-04 18:18:19 +00:00
parent 0585b2965d
commit 0ebe3808ca
18 changed files with 663 additions and 249 deletions

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@ -14,16 +14,6 @@
// first thing Eigen does: stop the compiler from committing suicide
#include "src/Core/util/DisableStupidWarnings.h"
/// This will no longer be needed after the next release of the computecppCE
#ifdef EIGEN_USE_SYCL
#undef min
#undef max
#undef isnan
#undef isinf
#undef isfinite
#include <SYCL/sycl.hpp>
#endif
// Handle NVCC/CUDA/SYCL
#if defined(__CUDACC__) || defined(__SYCL_DEVICE_ONLY__)
// Do not try asserts on CUDA and SYCL!

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@ -13,6 +13,15 @@
#include "../../../Eigen/Core"
#ifdef EIGEN_USE_SYCL
#undef min
#undef max
#undef isnan
#undef isinf
#undef isfinite
#include <SYCL/sycl.hpp>
#endif
#include <Eigen/src/Core/util/DisableStupidWarnings.h>
#include "../SpecialFunctions"
@ -69,10 +78,6 @@ typedef unsigned __int64 uint64_t;
#endif
#endif
#ifdef EIGEN_USE_SYCL
#include <SYCL/sycl.hpp>
#endif
#include "src/Tensor/TensorMacros.h"
#include "src/Tensor/TensorForwardDeclarations.h"
#include "src/Tensor/TensorMeta.h"
@ -81,7 +86,6 @@ typedef unsigned __int64 uint64_t;
#include "src/Tensor/TensorDeviceDefault.h"
#include "src/Tensor/TensorDeviceThreadPool.h"
#include "src/Tensor/TensorDeviceCuda.h"
#include "src/Tensor/TensorSycl.h"
#include "src/Tensor/TensorDeviceSycl.h"
#include "src/Tensor/TensorIndexList.h"
#include "src/Tensor/TensorDimensionList.h"
@ -128,6 +132,7 @@ typedef unsigned __int64 uint64_t;
#include "src/Tensor/TensorAssign.h"
#include "src/Tensor/TensorScan.h"
#include "src/Tensor/TensorSycl.h"
#include "src/Tensor/TensorExecutor.h"
#include "src/Tensor/TensorDevice.h"

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@ -1,12 +1,11 @@
// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2016 Benoit Steiner <benoit.steiner.goog@gmail.com>
// Mehdi Goli Codeplay Software Ltd.
// Ralph Potter Codeplay Software Ltd.
// Luke Iwanski Codeplay Software Ltd.
// Cummins Chris PhD student at The University of Edinburgh.
// Contact: <eigen@codeplay.com>
// Copyright (C) 2016 Benoit Steiner <benoit.steiner.goog@gmail.com>
//
// This Source Code Form is subject to the terms of the Mozilla
@ -25,12 +24,8 @@ namespace Eigen {
template <typename T, bool MapAllocator>
struct BufferT {
using Type = cl::sycl::buffer<T, 1, cl::sycl::map_allocator<T>>;
static inline void add_sycl_buffer(
const T *ptr, size_t num_bytes,
std::map<const void *, std::shared_ptr<void>> &buffer_map) {
buffer_map.insert(std::pair<const void *, std::shared_ptr<void>>(
ptr, std::shared_ptr<void>(std::make_shared<Type>(
Type(const_cast<T *>(ptr), cl::sycl::range<1>(num_bytes))))));
static inline void add_sycl_buffer(const T *ptr, size_t num_bytes,std::map<const void *, std::shared_ptr<void>> &buffer_map) {
buffer_map.insert(std::pair<const void *, std::shared_ptr<void>>(ptr, std::shared_ptr<void>(std::make_shared<Type>(Type(const_cast<T *>(ptr), cl::sycl::range<1>(num_bytes))))));
}
};
@ -39,12 +34,8 @@ struct BufferT {
template <typename T>
struct BufferT<T, false> {
using Type = cl::sycl::buffer<T, 1>;
static inline void add_sycl_buffer(
const T *ptr, size_t num_bytes,
std::map<const void *, std::shared_ptr<void>> &buffer_map) {
buffer_map.insert(std::pair<const void *, std::shared_ptr<void>>(
ptr, std::shared_ptr<void>(
std::make_shared<Type>(Type(cl::sycl::range<1>(num_bytes))))));
static inline void add_sycl_buffer(const T *ptr, size_t num_bytes, std::map<const void *, std::shared_ptr<void>> &buffer_map) {
buffer_map.insert(std::pair<const void *, std::shared_ptr<void>>(ptr, std::shared_ptr<void>(std::make_shared<Type>(Type(cl::sycl::range<1>(num_bytes))))));
}
};
@ -78,15 +69,20 @@ struct SyclDevice {
/// for that particular pointer.
template <cl::sycl::access::mode AcMd, bool MapAllocator, typename T>
inline cl::sycl::accessor<T, 1, AcMd, cl::sycl::access::target::global_buffer>
get_sycl_accessor(size_t num_bytes, cl::sycl::handler &cgh,
const T *ptr) const {
get_sycl_accessor(size_t num_bytes, cl::sycl::handler &cgh, const T * ptr) const {
return (get_sycl_buffer<MapAllocator,T>(num_bytes, ptr).template get_access<AcMd, cl::sycl::access::target::global_buffer>(cgh));
}
template <bool MapAllocator, typename T>
inline typename BufferT<T, MapAllocator>::Type
get_sycl_buffer(size_t num_bytes,const T * ptr) const {
if(MapAllocator && !ptr){
eigen_assert("pointer with map_Allocator cannot be null. Please initialise the input pointer"); }
auto it = buffer_map.find(ptr);
if (it == buffer_map.end()) {
BufferT<T, MapAllocator>::add_sycl_buffer(ptr, num_bytes, buffer_map);
}
return (
((typename BufferT<T, MapAllocator>::Type *)(buffer_map.at(ptr).get()))
->template get_access<AcMd>(cgh));
return (*((typename BufferT<T, MapAllocator>::Type*)((buffer_map.at(ptr).get()))));
}
/// allocating memory on the cpu
@ -100,22 +96,21 @@ struct SyclDevice {
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void deallocate(void *buffer) const {
internal::aligned_free(buffer);
}
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void memcpy(void *dst, const void *src,
size_t n) const {
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void memcpy(void *dst, const void *src, size_t n) const {
::memcpy(dst, src, n);
}
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void memcpyHostToDevice(
void *dst, const void *src, size_t n) const {
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void memcpyHostToDevice(void *dst, const void *src, size_t n) const {
memcpy(dst, src, n);
}
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void memcpyDeviceToHost(
void *dst, const void *src, size_t n) const {
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void memcpyDeviceToHost(void *dst, const void *src, size_t n) const {
memcpy(dst, src, n);
}
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void memset(void *buffer, int c,
size_t n) const {
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void memset(void *buffer, int c, size_t n) const {
::memset(buffer, c, n);
}
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE int majorDeviceVersion() const {
return 1;
}
};
} // end namespace Eigen

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@ -47,13 +47,13 @@ struct traits<TensorEvalToOp<XprType, MakePointer_> >
template<typename XprType, template <class> class MakePointer_>
struct eval<TensorEvalToOp<XprType, MakePointer_>, Eigen::Dense>
{
typedef const TensorEvalToOp<XprType>& type;
typedef const TensorEvalToOp<XprType, MakePointer_>& type;
};
template<typename XprType, template <class> class MakePointer_>
struct nested<TensorEvalToOp<XprType, MakePointer_>, 1, typename eval<TensorEvalToOp<XprType, MakePointer_> >::type>
{
typedef TensorEvalToOp<XprType> type;
typedef TensorEvalToOp<XprType, MakePointer_> type;
};
} // end namespace internal

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@ -33,7 +33,7 @@ template<typename UnaryOp, typename XprType> class TensorCwiseUnaryOp;
template<typename BinaryOp, typename LeftXprType, typename RightXprType> class TensorCwiseBinaryOp;
template<typename TernaryOp, typename Arg1XprType, typename Arg2XprType, typename Arg3XprType> class TensorCwiseTernaryOp;
template<typename IfXprType, typename ThenXprType, typename ElseXprType> class TensorSelectOp;
template<typename Op, typename Dims, typename XprType> class TensorReductionOp;
template<typename Op, typename Dims, typename XprType, template <class> class MakePointer_ = MakePointer > class TensorReductionOp;
template<typename XprType> class TensorIndexTupleOp;
template<typename ReduceOp, typename Dims, typename XprType> class TensorTupleReducerOp;
template<typename Axis, typename LeftXprType, typename RightXprType> class TensorConcatenationOp;

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@ -2,6 +2,7 @@
// for linear algebra.
//
// Copyright (C) 2014 Benoit Steiner <benoit.steiner.goog@gmail.com>
// Copyright (C) 2016 Mehdi Goli, Codeplay Software Ltd <eigen@codeplay.com>
//
// This Source Code Form is subject to the terms of the Mozilla
// Public License v. 2.0. If a copy of the MPL was not distributed
@ -20,8 +21,8 @@ namespace Eigen {
*/
namespace internal {
template<typename Op, typename Dims, typename XprType>
struct traits<TensorReductionOp<Op, Dims, XprType> >
template<typename Op, typename Dims, typename XprType,template <class> class MakePointer_ >
struct traits<TensorReductionOp<Op, Dims, XprType, MakePointer_> >
: traits<XprType>
{
typedef traits<XprType> XprTraits;
@ -31,18 +32,24 @@ struct traits<TensorReductionOp<Op, Dims, XprType> >
typedef typename XprType::Nested Nested;
static const int NumDimensions = XprTraits::NumDimensions - array_size<Dims>::value;
static const int Layout = XprTraits::Layout;
template <class T> struct MakePointer {
// Intermediate typedef to workaround MSVC issue.
typedef MakePointer_<T> MakePointerT;
typedef typename MakePointerT::Type Type;
};
};
template<typename Op, typename Dims, typename XprType>
struct eval<TensorReductionOp<Op, Dims, XprType>, Eigen::Dense>
template<typename Op, typename Dims, typename XprType, template <class> class MakePointer_>
struct eval<TensorReductionOp<Op, Dims, XprType, MakePointer_>, Eigen::Dense>
{
typedef const TensorReductionOp<Op, Dims, XprType>& type;
typedef const TensorReductionOp<Op, Dims, XprType, MakePointer_>& type;
};
template<typename Op, typename Dims, typename XprType>
struct nested<TensorReductionOp<Op, Dims, XprType>, 1, typename eval<TensorReductionOp<Op, Dims, XprType> >::type>
template<typename Op, typename Dims, typename XprType, template <class> class MakePointer_>
struct nested<TensorReductionOp<Op, Dims, XprType, MakePointer_>, 1, typename eval<TensorReductionOp<Op, Dims, XprType, MakePointer_> >::type>
{
typedef TensorReductionOp<Op, Dims, XprType> type;
typedef TensorReductionOp<Op, Dims, XprType, MakePointer_> type;
};
@ -339,8 +346,8 @@ __global__ void OuterReductionKernel(R, const S, I, I, typename S::CoeffReturnTy
} // end namespace internal
template <typename Op, typename Dims, typename XprType>
class TensorReductionOp : public TensorBase<TensorReductionOp<Op, Dims, XprType>, ReadOnlyAccessors> {
template <typename Op, typename Dims, typename XprType, template <class> class MakePointer_>
class TensorReductionOp : public TensorBase<TensorReductionOp<Op, Dims, XprType, MakePointer_>, ReadOnlyAccessors> {
public:
typedef typename Eigen::internal::traits<TensorReductionOp>::Scalar Scalar;
typedef typename Eigen::NumTraits<Scalar>::Real RealScalar;
@ -371,18 +378,19 @@ class TensorReductionOp : public TensorBase<TensorReductionOp<Op, Dims, XprType>
// Eval as rvalue
template<typename Op, typename Dims, typename ArgType, typename Device>
struct TensorEvaluator<const TensorReductionOp<Op, Dims, ArgType>, Device>
template<typename Op, typename Dims, typename ArgType, template <class> class MakePointer_, typename Device>
struct TensorEvaluator<const TensorReductionOp<Op, Dims, ArgType, MakePointer_>, Device>
{
typedef TensorReductionOp<Op, Dims, ArgType> XprType;
typedef TensorReductionOp<Op, Dims, ArgType, MakePointer_> XprType;
typedef typename XprType::Index Index;
typedef ArgType ChildType;
typedef typename TensorEvaluator<ArgType, Device>::Dimensions InputDimensions;
static const int NumInputDims = internal::array_size<InputDimensions>::value;
static const int NumReducedDims = internal::array_size<Dims>::value;
static const int NumOutputDims = NumInputDims - NumReducedDims;
typedef typename internal::conditional<NumOutputDims==0, Sizes<>, DSizes<Index, NumOutputDims> >::type Dimensions;
typedef typename XprType::Scalar Scalar;
typedef TensorEvaluator<const TensorReductionOp<Op, Dims, ArgType>, Device> Self;
typedef TensorEvaluator<const TensorReductionOp<Op, Dims, ArgType, MakePointer_>, Device> Self;
static const bool InputPacketAccess = TensorEvaluator<ArgType, Device>::PacketAccess;
typedef typename internal::remove_const<typename XprType::CoeffReturnType>::type CoeffReturnType;
typedef typename PacketType<CoeffReturnType, Device>::type PacketReturnType;
@ -401,7 +409,7 @@ struct TensorEvaluator<const TensorReductionOp<Op, Dims, ArgType>, Device>
static const bool RunningFullReduction = (NumOutputDims==0);
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorEvaluator(const XprType& op, const Device& device)
: m_impl(op.expression(), device), m_reducer(op.reducer()), m_result(NULL), m_device(device)
: m_impl(op.expression(), device), m_reducer(op.reducer()), m_result(NULL), m_device(device), m_xpr_dims(op.dims())
{
EIGEN_STATIC_ASSERT((NumInputDims >= NumReducedDims), YOU_MADE_A_PROGRAMMING_MISTAKE);
EIGEN_STATIC_ASSERT((!ReducingInnerMostDims | !PreservingInnerMostDims | (NumReducedDims == NumInputDims)),
@ -471,25 +479,35 @@ struct TensorEvaluator<const TensorReductionOp<Op, Dims, ArgType>, Device>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE const Dimensions& dimensions() const { return m_dimensions; }
EIGEN_STRONG_INLINE EIGEN_DEVICE_FUNC bool evalSubExprsIfNeeded(CoeffReturnType* data) {
EIGEN_STRONG_INLINE EIGEN_DEVICE_FUNC bool evalSubExprsIfNeeded(typename MakePointer_<CoeffReturnType>::Type data) {
m_impl.evalSubExprsIfNeeded(NULL);
// Use the FullReducer if possible.
if (RunningFullReduction &&
if ((RunningFullReduction && RunningOnSycl) ||(RunningFullReduction &&
internal::FullReducer<Self, Op, Device>::HasOptimizedImplementation &&
((RunningOnGPU && (m_device.majorDeviceVersion() >= 3)) ||
!RunningOnGPU)) {
!RunningOnGPU))) {
bool need_assign = false;
if (!data) {
m_result = static_cast<CoeffReturnType*>(m_device.allocate(sizeof(CoeffReturnType)));
data = m_result;
need_assign = true;
}
Op reducer(m_reducer);
internal::FullReducer<Self, Op, Device>::run(*this, reducer, m_device, data);
return need_assign;
}
else if(RunningOnSycl){
const Index num_values_to_reduce = internal::array_prod(m_reducedDims);
const Index num_coeffs_to_preserve = internal::array_prod(m_dimensions);
if (!data) {
data = static_cast<CoeffReturnType*>(m_device.allocate(sizeof(CoeffReturnType) * num_coeffs_to_preserve));
m_result = data;
}
Op reducer(m_reducer);
internal::InnerReducer<Self, Op, Device>::run(*this, reducer, m_device, data, num_values_to_reduce, num_coeffs_to_preserve);
return (m_result != NULL);
}
// Attempt to use an optimized reduction.
else if (RunningOnGPU && (m_device.majorDeviceVersion() >= 3)) {
@ -572,7 +590,7 @@ struct TensorEvaluator<const TensorReductionOp<Op, Dims, ArgType>, Device>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE CoeffReturnType coeff(Index index) const
{
if ((RunningFullReduction || RunningOnGPU) && m_result) {
if ((RunningOnSycl || RunningFullReduction || RunningOnGPU) && m_result) {
return *(m_result + index);
}
Op reducer(m_reducer);
@ -644,7 +662,20 @@ struct TensorEvaluator<const TensorReductionOp<Op, Dims, ArgType>, Device>
}
}
EIGEN_DEVICE_FUNC Scalar* data() const { return NULL; }
/// required by sycl in order to extract the output accessor
#ifndef EIGEN_USE_SYCL
EIGEN_DEVICE_FUNC typename MakePointer_<Scalar>::Type data() const { return NULL; }
#else
EIGEN_DEVICE_FUNC typename MakePointer_<Scalar>::Type data() const {
return m_result; }
#endif
/// required by sycl in order to extract the accessor
const TensorEvaluator<ArgType, Device>& impl() const { return m_impl; }
/// added for sycl in order to construct the buffer from the sycl device
const Device& device() const{return m_device;}
/// added for sycl in order to re-construct the reduction eval on the device for the sub-kernel
const Dims& xprDims() const {return m_xpr_dims;}
private:
template <int, typename, typename> friend struct internal::GenericDimReducer;
@ -737,12 +768,18 @@ struct TensorEvaluator<const TensorReductionOp<Op, Dims, ArgType>, Device>
// For full reductions
#if defined(EIGEN_USE_GPU) && defined(__CUDACC__)
static const bool RunningOnGPU = internal::is_same<Device, Eigen::GpuDevice>::value;
static const bool RunningOnSycl=false;
#elif defined(EIGEN_USE_SYCL)
static const bool RunningOnSycl = internal::is_same<typename internal::remove_all<Device>::type, Eigen::SyclDevice>::value;
static const bool RunningOnGPU = false;
#else
static const bool RunningOnGPU = false;
static const bool RunningOnSycl=false;
#endif
CoeffReturnType* m_result;
typename MakePointer_<CoeffReturnType>::Type m_result;
const Device& m_device;
const Dims& m_xpr_dims;
};
} // end namespace Eigen

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@ -0,0 +1,242 @@
// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Mehdi Goli Codeplay Software Ltd.
// Ralph Potter Codeplay Software Ltd.
// Luke Iwanski Codeplay Software Ltd.
// Contact: <eigen@codeplay.com>
//
// This Source Code Form is subject to the terms of the Mozilla
// Public License v. 2.0. If a copy of the MPL was not distributed
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
/*****************************************************************
* TensorSyclPlaceHolderExpr.h
*
* \brief:
* This is the specialisation of the placeholder expression based on the
* operation type
*
*****************************************************************/
#ifndef UNSUPPORTED_EIGEN_CXX11_SRC_TENSOR_TENSOR_REDUCTION_SYCL_HPP
#define UNSUPPORTED_EIGEN_CXX11_SRC_TENSOR_TENSOR_REDUCTION_SYCL_HPP
namespace Eigen {
namespace internal {
template<typename CoeffReturnType, typename KernelName> struct syclGenericBufferReducer{
template<typename BufferTOut, typename BufferTIn>
static void run(BufferTOut& bufOut, BufferTIn& bufI, const Eigen::SyclDevice& dev, size_t length, size_t local){
do {
auto f = [length, local, &bufOut, &bufI](cl::sycl::handler& h) mutable {
cl::sycl::nd_range<1> r{cl::sycl::range<1>{std::max(length, local)},
cl::sycl::range<1>{std::min(length, local)}};
/* Two accessors are used: one to the buffer that is being reduced,
* and a second to local memory, used to store intermediate data. */
auto aI =
bufI.template get_access<cl::sycl::access::mode::read_write>(h);
auto aOut =
bufOut.template get_access<cl::sycl::access::mode::discard_write>(h);
cl::sycl::accessor<CoeffReturnType, 1, cl::sycl::access::mode::read_write,
cl::sycl::access::target::local>
scratch(cl::sycl::range<1>(local), h);
/* The parallel_for invocation chosen is the variant with an nd_item
* parameter, since the code requires barriers for correctness. */
h.parallel_for<KernelName>(
r, [aOut, aI, scratch, local, length](cl::sycl::nd_item<1> id) {
size_t globalid = id.get_global(0);
size_t localid = id.get_local(0);
/* All threads collectively read from global memory into local.
* The barrier ensures all threads' IO is resolved before
* execution continues (strictly speaking, all threads within
* a single work-group - there is no co-ordination between
* work-groups, only work-items). */
if (globalid < length) {
scratch[localid] = aI[globalid];
}
id.barrier(cl::sycl::access::fence_space::local_space);
/* Apply the reduction operation between the current local
* id and the one on the other half of the vector. */
if (globalid < length) {
int min = (length < local) ? length : local;
for (size_t offset = min / 2; offset > 0; offset /= 2) {
if (localid < offset) {
scratch[localid] += scratch[localid + offset];
}
id.barrier(cl::sycl::access::fence_space::local_space);
}
/* The final result will be stored in local id 0. */
if (localid == 0) {
aI[id.get_group(0)] = scratch[localid];
if((length<=local) && globalid ==0){
aOut[globalid]=scratch[localid];
}
}
}
});
};
dev.m_queue.submit(f);
dev.m_queue.throw_asynchronous();
/* At this point, you could queue::wait_and_throw() to ensure that
* errors are caught quickly. However, this would likely impact
* performance negatively. */
length = length / local;
} while (length > 1);
}
};
/// For now let's start with a full reducer
/// Self is useless here because in expression construction we are going to treat reduction as a leafnode.
/// we want to take reduction child and then build a construction and apply the full reducer function on it. Fullreducre applies the
/// reduction operation on the child of the reduction. once it is done the reduction is an empty shell and can be thrown away and treated as
// a leafNode.
template <typename Self, typename Op, bool Vectorizable>
struct FullReducer<Self, Op, const Eigen::SyclDevice, Vectorizable> {
typedef typename Self::CoeffReturnType CoeffReturnType;
static const bool HasOptimizedImplementation = false;
static void run(const Self& self, Op& reducer, const Eigen::SyclDevice& dev, CoeffReturnType* output) {
typedef const typename Self::ChildType HostExpr; /// this is the child of reduction
typedef typename TensorSycl::internal::createPlaceHolderExpression<HostExpr>::Type PlaceHolderExpr;
auto functors = TensorSycl::internal::extractFunctors(self.impl());
int red_factor =256; /// initial reduction. If the size is less than red_factor we only creates one thread.
size_t inputSize =self.impl().dimensions().TotalSize();
size_t rng = inputSize/red_factor; // the total number of thread initially is half the size of the input
size_t remaining = inputSize% red_factor;
if(rng ==0) {
red_factor=1;
};
size_t tileSize =dev.m_queue.get_device(). template get_info<cl::sycl::info::device::max_work_group_size>()/2;
size_t GRange=std::max((size_t )1, rng);
// convert global range to power of 2 for redecution
GRange--;
GRange |= GRange >> 1;
GRange |= GRange >> 2;
GRange |= GRange >> 4;
GRange |= GRange >> 8;
GRange |= GRange >> 16;
#if __x86_64__ || __ppc64__ || _WIN64
GRange |= GRange >> 32;
#endif
GRange++;
size_t outTileSize = tileSize;
/// if the shared memory is less than the GRange, we set shared_mem size to the TotalSize and in this case one kernel would be created for recursion to reduce all to one.
if (GRange < outTileSize) outTileSize=GRange;
// getting final out buffer at the moment the created buffer is true because there is no need for assign
auto out_buffer =dev.template get_sycl_buffer<true, typename Eigen::internal::remove_all<CoeffReturnType>::type>(self.dimensions().TotalSize(), output);
/// creating the shared memory for calculating reduction.
/// This one is used to collect all the reduced value of shared memory as we dont have global barrier on GPU. Once it is saved we can
/// recursively apply reduction on it in order to reduce the whole.
auto temp_global_buffer =cl::sycl::buffer<CoeffReturnType, 1>(cl::sycl::range<1>(GRange));
typedef typename Eigen::internal::remove_all<decltype(self.xprDims())>::type Dims;
Dims dims= self.xprDims();
Op functor = reducer;
dev.m_queue.submit([&](cl::sycl::handler &cgh) {
// create a tuple of accessors from Evaluator
auto tuple_of_accessors = TensorSycl::internal::createTupleOfAccessors(cgh, self.impl());
auto tmp_global_accessor = temp_global_buffer. template get_access<cl::sycl::access::mode::read_write, cl::sycl::access::target::global_buffer>(cgh);
cgh.parallel_for<PlaceHolderExpr>( cl::sycl::nd_range<1>(cl::sycl::range<1>(GRange), cl::sycl::range<1>(outTileSize)), [=](cl::sycl::nd_item<1> itemID) {
typedef typename TensorSycl::internal::ConvertToDeviceExpression<const HostExpr>::Type DevExpr;
auto device_expr = TensorSycl::internal::createDeviceExpression<DevExpr, PlaceHolderExpr>(functors, tuple_of_accessors);
/// reduction cannot be captured automatically through our device conversion recursion. The reason is that reduction has two behaviour
/// the first behaviour is when it is used as a root to lauch the sub-kernel. The second one is when it is treated as a leafnode to pass the
/// calculated result to its parent kernel. While the latter is automatically detected through our device expression generator. The former is created here.
const auto device_self_expr= TensorReductionOp<Op, Dims, decltype(device_expr.expr) ,MakeGlobalPointer>(device_expr.expr, dims, functor);
/// This is the evaluator for device_self_expr. This is exactly similar to the self which has been passed to run function. The difference is
/// the device_evaluator is detectable and recognisable on the device.
auto device_self_evaluator = Eigen::TensorEvaluator<decltype(device_self_expr), Eigen::DefaultDevice>(device_self_expr, Eigen::DefaultDevice());
/// const cast added as a naive solution to solve the qualifier drop error
auto globalid=itemID.get_global_linear_id();
if(globalid<rng)
tmp_global_accessor.get_pointer()[globalid]=InnerMostDimReducer<decltype(device_self_evaluator), Op, false>::reduce(device_self_evaluator, red_factor*globalid, red_factor, const_cast<Op&>(functor));
else
tmp_global_accessor.get_pointer()[globalid]=static_cast<CoeffReturnType>(0);
if(remaining!=0 && globalid==0 )
// this will add the rest of input buffer when the input size is not devidable to red_factor.
tmp_global_accessor.get_pointer()[globalid]+=InnerMostDimReducer<decltype(device_self_evaluator), Op, false>::reduce(device_self_evaluator, red_factor*(rng), remaining, const_cast<Op&>(functor));
});
});
dev.m_queue.throw_asynchronous();
/// This is used to recursively reduce the tmp value to an element of 1;
syclGenericBufferReducer<CoeffReturnType,HostExpr>::run(out_buffer, temp_global_buffer,dev, GRange, outTileSize);
}
};
template <typename Self, typename Op>
struct InnerReducer<Self, Op, const Eigen::SyclDevice> {
typedef typename Self::CoeffReturnType CoeffReturnType;
static const bool HasOptimizedImplementation = false;
static bool run(const Self& self, Op& reducer, const Eigen::SyclDevice& dev, CoeffReturnType* output, typename Self::Index , typename Self::Index num_coeffs_to_preserve) {
typedef const typename Self::ChildType HostExpr; /// this is the child of reduction
typedef typename TensorSycl::internal::createPlaceHolderExpression<HostExpr>::Type PlaceHolderExpr;
auto functors = TensorSycl::internal::extractFunctors(self.impl());
size_t tileSize =dev.m_queue.get_device(). template get_info<cl::sycl::info::device::max_work_group_size>()/2;
size_t GRange=num_coeffs_to_preserve;
if (tileSize>GRange) tileSize=GRange;
else if(GRange>tileSize){
size_t xMode = GRange % tileSize;
if (xMode != 0) GRange += (tileSize - xMode);
}
// getting final out buffer at the moment the created buffer is true because there is no need for assign
/// creating the shared memory for calculating reduction.
/// This one is used to collect all the reduced value of shared memory as we dont have global barrier on GPU. Once it is saved we can
/// recursively apply reduction on it in order to reduce the whole.
typedef typename Eigen::internal::remove_all<decltype(self.xprDims())>::type Dims;
Dims dims= self.xprDims();
Op functor = reducer;
dev.m_queue.submit([&](cl::sycl::handler &cgh) {
// create a tuple of accessors from Evaluator
auto tuple_of_accessors = TensorSycl::internal::createTupleOfAccessors(cgh, self.impl());
auto output_accessor = dev.template get_sycl_accessor<cl::sycl::access::mode::discard_write, true>(num_coeffs_to_preserve,cgh, output);
cgh.parallel_for<Self>( cl::sycl::nd_range<1>(cl::sycl::range<1>(GRange), cl::sycl::range<1>(tileSize)), [=](cl::sycl::nd_item<1> itemID) {
typedef typename TensorSycl::internal::ConvertToDeviceExpression<const HostExpr>::Type DevExpr;
auto device_expr = TensorSycl::internal::createDeviceExpression<DevExpr, PlaceHolderExpr>(functors, tuple_of_accessors);
/// reduction cannot be captured automatically through our device conversion recursion. The reason is that reduction has two behaviour
/// the first behaviour is when it is used as a root to lauch the sub-kernel. The second one is when it is treated as a leafnode to pass the
/// calculated result to its parent kernel. While the latter is automatically detected through our device expression generator. The former is created here.
const auto device_self_expr= TensorReductionOp<Op, Dims, decltype(device_expr.expr) ,MakeGlobalPointer>(device_expr.expr, dims, functor);
/// This is the evaluator for device_self_expr. This is exactly similar to the self which has been passed to run function. The difference is
/// the device_evaluator is detectable and recognisable on the device.
typedef Eigen::TensorEvaluator<decltype(device_self_expr), Eigen::DefaultDevice> DeiceSelf;
auto device_self_evaluator = Eigen::TensorEvaluator<decltype(device_self_expr), Eigen::DefaultDevice>(device_self_expr, Eigen::DefaultDevice());
/// const cast added as a naive solution to solve the qualifier drop error
auto globalid=itemID.get_global_linear_id();
if (globalid< static_cast<size_t>(num_coeffs_to_preserve)) {
typename DeiceSelf::CoeffReturnType accum = functor.initialize();
GenericDimReducer<DeiceSelf::NumReducedDims-1, DeiceSelf, Op>::reduce(device_self_evaluator, device_self_evaluator.firstInput(globalid),const_cast<Op&>(functor), &accum);
functor.finalize(accum);
output_accessor.get_pointer()[globalid]= accum;
}
});
});
dev.m_queue.throw_asynchronous();
return false;
}
};
} // end namespace internal
} // namespace Eigen
#endif // UNSUPPORTED_EIGEN_CXX11_SRC_TENSOR_TENSOR_REDUCTION_SYCL_HPP

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@ -22,6 +22,13 @@ struct MakeGlobalPointer {
typedef typename cl::sycl::global_ptr<T>::pointer_t Type;
};
// global pointer to set different attribute state for a class
template <class T>
struct MakeLocalPointer {
typedef typename cl::sycl::local_ptr<T>::pointer_t Type;
};
namespace Eigen {
namespace TensorSycl {
namespace internal {
@ -43,9 +50,7 @@ template<typename T> struct GetType<false, T>{
// tuple construction
#include "TensorSyclTuple.h"
// This file contains the PlaceHolder that replaces the actual data
#include "TensorSyclPlaceHolder.h"
// counting number of leaf at compile time
#include "TensorSyclLeafCount.h"
// The index PlaceHolder takes the actual expression and replaces the actual
@ -57,9 +62,6 @@ template<typename T> struct GetType<false, T>{
// creation of an accessor tuple from a tuple of SYCL buffers
#include "TensorSyclExtractAccessor.h"
// actual data extraction using accessors
//#include "GetDeviceData.h"
// this is used to change the address space type in tensor map for GPU
#include "TensorSyclConvertToDeviceExpression.h"
@ -70,6 +72,9 @@ template<typename T> struct GetType<false, T>{
// this is used to construct the expression on the device
#include "TensorSyclExprConstructor.h"
/// this is used for extracting tensor reduction
#include "TensorReductionSycl.h"
// kernel execution using fusion
#include "TensorSyclRun.h"

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@ -102,6 +102,18 @@ KERNELBROKERCONVERT(, false, TensorForcedEvalOp)
KERNELBROKERCONVERT(const, true, TensorEvalToOp)
KERNELBROKERCONVERT(, false, TensorEvalToOp)
#undef KERNELBROKERCONVERT
/// specialisation of the \ref ConvertToDeviceExpression struct when the node type is TensorReductionOp
#define KERNELBROKERCONVERTREDUCTION(CVQual)\
template <typename OP, typename Dim, typename subExpr, template <class> class MakePointer_>\
struct ConvertToDeviceExpression<CVQual TensorReductionOp<OP, Dim, subExpr, MakePointer_> > {\
typedef CVQual TensorReductionOp<OP, Dim, typename ConvertToDeviceExpression<subExpr>::Type, MakeGlobalPointer> Type;\
};
KERNELBROKERCONVERTREDUCTION(const)
KERNELBROKERCONVERTREDUCTION()
#undef KERNELBROKERCONVERTREDUCTION
} // namespace internal
} // namespace TensorSycl
} // namespace Eigen

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@ -33,8 +33,7 @@ struct EvalToLHSConstructor {
EvalToLHSConstructor(const utility::tuple::Tuple<Params...> &t): expr((&(*(utility::tuple::get<N>(t).get_pointer())))) {}
};
/// \struct ExprConstructor is used to reconstruct the expression on the device
/// and
/// \struct ExprConstructor is used to reconstruct the expression on the device and
/// recreate the expression with MakeGlobalPointer containing the device address
/// space for the TensorMap pointers used in eval function.
/// It receives the original expression type, the functor of the node, the tuple
@ -49,7 +48,7 @@ struct ExprConstructor;
template <typename Scalar_, int Options_, int Options2_, int Options3_, int NumIndices_, typename IndexType_,\
template <class> class MakePointer_, size_t N, typename... Params>\
struct ExprConstructor< CVQual TensorMap<Tensor<Scalar_, NumIndices_, Options_, IndexType_>, Options2_, MakeGlobalPointer>,\
CVQual Eigen::internal::PlaceHolder<CVQual TensorMap<Tensor<Scalar_, NumIndices_, Options_, IndexType_>, Options3_, MakePointer_>, N>, Params...>{\
CVQual PlaceHolder<CVQual TensorMap<Tensor<Scalar_, NumIndices_, Options_, IndexType_>, Options3_, MakePointer_>, N>, Params...>{\
typedef CVQual TensorMap<Tensor<Scalar_, NumIndices_, Options_, IndexType_>, Options2_, MakeGlobalPointer> Type;\
Type expr;\
template <typename FuncDetector>\
@ -187,7 +186,7 @@ EVALTO()
#define FORCEDEVAL(CVQual)\
template <typename OrigExpr, typename DevExpr, size_t N, typename... Params>\
struct ExprConstructor<CVQual TensorForcedEvalOp<OrigExpr, MakeGlobalPointer>,\
CVQual Eigen::internal::PlaceHolder<CVQual TensorForcedEvalOp<DevExpr>, N>, Params...> {\
CVQual PlaceHolder<CVQual TensorForcedEvalOp<DevExpr>, N>, Params...> {\
typedef CVQual TensorMap<Tensor<typename TensorForcedEvalOp<DevExpr, MakeGlobalPointer>::Scalar,\
TensorForcedEvalOp<DevExpr, MakeGlobalPointer>::NumDimensions, 0, typename TensorForcedEvalOp<DevExpr>::Index>, 0, MakeGlobalPointer> Type;\
Type expr;\
@ -200,14 +199,41 @@ FORCEDEVAL(const)
FORCEDEVAL()
#undef FORCEDEVAL
template <bool Conds, size_t X , size_t Y > struct ValueCondition {
static const size_t Res =X;
};
template<size_t X, size_t Y> struct ValueCondition<false, X , Y> {
static const size_t Res =Y;
};
/// specialisation of the \ref ExprConstructor struct when the node type is TensorReductionOp
#define SYCLREDUCTIONEXPR(CVQual)\
template <typename OP, typename Dim, typename OrigExpr, typename DevExpr, size_t N, typename... Params>\
struct ExprConstructor<CVQual TensorReductionOp<OP, Dim, OrigExpr, MakeGlobalPointer>,\
CVQual PlaceHolder<CVQual TensorReductionOp<OP, Dim, DevExpr>, N>, Params...> {\
static const size_t NumIndices= ValueCondition< TensorReductionOp<OP, Dim, DevExpr, MakeGlobalPointer>::NumDimensions==0, 1, TensorReductionOp<OP, Dim, DevExpr, MakeGlobalPointer>::NumDimensions >::Res;\
typedef CVQual TensorMap<Tensor<typename TensorReductionOp<OP, Dim, DevExpr, MakeGlobalPointer>::Scalar,\
NumIndices, 0, typename TensorReductionOp<OP, Dim, DevExpr>::Index>, 0, MakeGlobalPointer> Type;\
Type expr;\
template <typename FuncDetector>\
ExprConstructor(FuncDetector &fd, const utility::tuple::Tuple<Params...> &t)\
: expr(Type((&(*(utility::tuple::get<N>(t).get_pointer()))), fd.dimensions())) {}\
};
SYCLREDUCTIONEXPR(const)
SYCLREDUCTIONEXPR()
#undef SYCLREDUCTIONEXPR
/// template deduction for \ref ExprConstructor struct
template <typename OrigExpr, typename IndexExpr, typename FuncD, typename... Params>
auto createDeviceExpression(FuncD &funcD, const utility::tuple::Tuple<Params...> &t)
-> decltype(ExprConstructor<OrigExpr, IndexExpr, Params...>(funcD, t)) {
return ExprConstructor<OrigExpr, IndexExpr, Params...>(funcD, t);
}
}
}
} // namespace Eigen
} /// namespace TensorSycl
} /// namespace internal
} /// namespace Eigen
#endif // UNSUPPORTED_EIGEN_CXX11_SRC_TENSOR_TENSORSYCL_EXPR_CONSTRUCTOR_HPP

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@ -56,10 +56,10 @@ struct AccessorConstructor{
-> decltype(utility::tuple::append(ExtractAccessor<Arg1>::getTuple(cgh, eval1),utility::tuple::append(ExtractAccessor<Arg2>::getTuple(cgh, eval2), ExtractAccessor<Arg3>::getTuple(cgh, eval3)))) {
return utility::tuple::append(ExtractAccessor<Arg1>::getTuple(cgh, eval1),utility::tuple::append(ExtractAccessor<Arg2>::getTuple(cgh, eval2), ExtractAccessor<Arg3>::getTuple(cgh, eval3)));
}
template< cl::sycl::access::mode AcM, typename Arg> static inline auto getAccessor(cl::sycl::handler& cgh, Arg eval)
-> decltype(utility::tuple::make_tuple( eval.device().template get_sycl_accessor<AcM, true,
template< cl::sycl::access::mode AcM, bool MapAllocator, typename Arg> static inline auto getAccessor(cl::sycl::handler& cgh, Arg eval)
-> decltype(utility::tuple::make_tuple( eval.device().template get_sycl_accessor<AcM, MapAllocator,
typename Eigen::internal::remove_all<typename Arg::CoeffReturnType>::type>(eval.dimensions().TotalSize(), cgh,eval.data()))){
return utility::tuple::make_tuple(eval.device().template get_sycl_accessor<AcM, true, typename Eigen::internal::remove_all<typename Arg::CoeffReturnType>::type>(eval.dimensions().TotalSize(), cgh,eval.data()));
return utility::tuple::make_tuple(eval.device().template get_sycl_accessor<AcM, MapAllocator, typename Eigen::internal::remove_all<typename Arg::CoeffReturnType>::type>(eval.dimensions().TotalSize(), cgh,eval.data()));
}
};
@ -73,14 +73,12 @@ struct ExtractAccessor<TensorEvaluator<const UnaryCategory<OP, RHSExpr>, Dev> >
}
};
/// specialisation of the \ref ExtractAccessor struct when the node type is
/// TensorCwiseNullaryOp, TensorCwiseUnaryOp and TensorBroadcastingOp
/// specialisation of the \ref ExtractAccessor struct when the node type is TensorCwiseNullaryOp, TensorCwiseUnaryOp and TensorBroadcastingOp
template <template<class, class> class UnaryCategory, typename OP, typename RHSExpr, typename Dev>
struct ExtractAccessor<TensorEvaluator<UnaryCategory<OP, RHSExpr>, Dev> >
: ExtractAccessor<TensorEvaluator<const UnaryCategory<OP, RHSExpr>, Dev> > {};
/// specialisation of the \ref ExtractAccessor struct when the node type is
/// const TensorCwiseBinaryOp
/// specialisation of the \ref ExtractAccessor struct when the node type is const TensorCwiseBinaryOp
template <template<class, class, class> class BinaryCategory, typename OP, typename LHSExpr, typename RHSExpr, typename Dev>
struct ExtractAccessor<TensorEvaluator<const BinaryCategory<OP, LHSExpr, RHSExpr>, Dev> > {
static inline auto getTuple(cl::sycl::handler& cgh, const TensorEvaluator<const BinaryCategory<OP, LHSExpr, RHSExpr>, Dev> eval)
@ -88,9 +86,7 @@ struct ExtractAccessor<TensorEvaluator<const BinaryCategory<OP, LHSExpr, RHSExpr
return AccessorConstructor::getTuple(cgh, eval.left_impl(), eval.right_impl());
}
};
/// specialisation of the \ref ExtractAccessor struct when the node type is
/// TensorCwiseBinaryOp
/// specialisation of the \ref ExtractAccessor struct when the node type is TensorCwiseBinaryOp
template <template<class, class, class> class BinaryCategory, typename OP, typename LHSExpr, typename RHSExpr, typename Dev>
struct ExtractAccessor<TensorEvaluator<BinaryCategory<OP, LHSExpr, RHSExpr>, Dev> >
: ExtractAccessor<TensorEvaluator<const BinaryCategory<OP, LHSExpr, RHSExpr>, Dev> >{};
@ -105,8 +101,7 @@ struct ExtractAccessor<TensorEvaluator<const TernaryCategory<OP, Arg1Expr, Arg2E
}
};
/// specialisation of the \ref ExtractAccessor struct when the node type is
/// TensorCwiseTernaryOp
/// specialisation of the \ref ExtractAccessor struct when the node type is TensorCwiseTernaryOp
template <template<class, class, class, class> class TernaryCategory, typename OP, typename Arg1Expr, typename Arg2Expr, typename Arg3Expr, typename Dev>
struct ExtractAccessor<TensorEvaluator<TernaryCategory<OP, Arg1Expr, Arg2Expr, Arg3Expr>, Dev> >
: ExtractAccessor<TensorEvaluator<const TernaryCategory<OP, Arg1Expr, Arg2Expr, Arg3Expr>, Dev> >{};
@ -127,8 +122,7 @@ template <typename IfExpr, typename ThenExpr, typename ElseExpr, typename Dev>
struct ExtractAccessor<TensorEvaluator<TensorSelectOp<IfExpr, ThenExpr, ElseExpr>, Dev> >
: ExtractAccessor<TensorEvaluator<const TensorSelectOp<IfExpr, ThenExpr, ElseExpr>, Dev> >{};
/// specialisation of the \ref ExtractAccessor struct when the node type is
/// const TensorAssignOp
/// specialisation of the \ref ExtractAccessor struct when the node type is const TensorAssignOp
template <typename LHSExpr, typename RHSExpr, typename Dev>
struct ExtractAccessor<TensorEvaluator<const TensorAssignOp<LHSExpr, RHSExpr>, Dev> > {
static inline auto getTuple(cl::sycl::handler& cgh, const TensorEvaluator<const TensorAssignOp<LHSExpr, RHSExpr>, Dev> eval)
@ -137,65 +131,74 @@ struct ExtractAccessor<TensorEvaluator<const TensorAssignOp<LHSExpr, RHSExpr>, D
}
};
/// specialisation of the \ref ExtractAccessor struct when the node type is
/// TensorAssignOp
/// specialisation of the \ref ExtractAccessor struct when the node type is TensorAssignOp
template <typename LHSExpr, typename RHSExpr, typename Dev>
struct ExtractAccessor<TensorEvaluator<TensorAssignOp<LHSExpr, RHSExpr>, Dev> >
: ExtractAccessor<TensorEvaluator<const TensorAssignOp<LHSExpr, RHSExpr>, Dev> >{};
/// specialisation of the \ref ExtractAccessor struct when the node type is
/// const TensorMap
/// specialisation of the \ref ExtractAccessor struct when the node type is const TensorMap
#define TENSORMAPEXPR(CVQual, ACCType)\
template <typename PlainObjectType, int Options_, typename Dev>\
struct ExtractAccessor<TensorEvaluator<CVQual TensorMap<PlainObjectType, Options_>, Dev> > {\
static inline auto getTuple(cl::sycl::handler& cgh,const TensorEvaluator<CVQual TensorMap<PlainObjectType, Options_>, Dev> eval)\
-> decltype(AccessorConstructor::template getAccessor<ACCType>(cgh, eval)){\
return AccessorConstructor::template getAccessor<ACCType>(cgh, eval);\
-> decltype(AccessorConstructor::template getAccessor<ACCType, true>(cgh, eval)){\
return AccessorConstructor::template getAccessor<ACCType, true>(cgh, eval);\
}\
};
TENSORMAPEXPR(const, cl::sycl::access::mode::read)
TENSORMAPEXPR(, cl::sycl::access::mode::read_write)
#undef TENSORMAPEXPR
/// specialisation of the \ref ExtractAccessor struct when the node type is
/// const TensorForcedEvalOp
/// specialisation of the \ref ExtractAccessor struct when the node type is const TensorForcedEvalOp
template <typename Expr, typename Dev>
struct ExtractAccessor<TensorEvaluator<const TensorForcedEvalOp<Expr>, Dev> > {
static inline auto getTuple(cl::sycl::handler& cgh, const TensorEvaluator<const TensorForcedEvalOp<Expr>, Dev> eval)
-> decltype(AccessorConstructor::template getAccessor<cl::sycl::access::mode::read>(cgh, eval)){
return AccessorConstructor::template getAccessor<cl::sycl::access::mode::read>(cgh, eval);
-> decltype(AccessorConstructor::template getAccessor<cl::sycl::access::mode::read, false>(cgh, eval)){
return AccessorConstructor::template getAccessor<cl::sycl::access::mode::read, false>(cgh, eval);
}
};
/// specialisation of the \ref ExtractAccessor struct when the node type is
/// TensorForcedEvalOp
/// specialisation of the \ref ExtractAccessor struct when the node type is TensorForcedEvalOp
template <typename Expr, typename Dev>
struct ExtractAccessor<TensorEvaluator<TensorForcedEvalOp<Expr>, Dev> >
: ExtractAccessor<TensorEvaluator<const TensorForcedEvalOp<Expr>, Dev> >{};
/// specialisation of the \ref ExtractAccessor struct when the node type is
/// const TensorEvalToOp
/// specialisation of the \ref ExtractAccessor struct when the node type is const TensorEvalToOp
template <typename Expr, typename Dev>
struct ExtractAccessor<TensorEvaluator<const TensorEvalToOp<Expr>, Dev> > {
static inline auto getTuple(cl::sycl::handler& cgh,const TensorEvaluator<const TensorEvalToOp<Expr>, Dev> eval)
-> decltype(utility::tuple::append(AccessorConstructor::template getAccessor<cl::sycl::access::mode::write>(cgh, eval), AccessorConstructor::getTuple(cgh, eval.impl()))){
return utility::tuple::append(AccessorConstructor::template getAccessor<cl::sycl::access::mode::write>(cgh, eval), AccessorConstructor::getTuple(cgh, eval.impl()));
-> decltype(utility::tuple::append(AccessorConstructor::template getAccessor<cl::sycl::access::mode::write, false>(cgh, eval), AccessorConstructor::getTuple(cgh, eval.impl()))){
return utility::tuple::append(AccessorConstructor::template getAccessor<cl::sycl::access::mode::write, false>(cgh, eval), AccessorConstructor::getTuple(cgh, eval.impl()));
}
};
/// specialisation of the \ref ExtractAccessor struct when the node type is
/// TensorEvalToOp
/// specialisation of the \ref ExtractAccessor struct when the node type is TensorEvalToOp
template <typename Expr, typename Dev>
struct ExtractAccessor<TensorEvaluator<TensorEvalToOp<Expr>, Dev> >
: ExtractAccessor<TensorEvaluator<const TensorEvalToOp<Expr>, Dev> >{};
/// specialisation of the \ref ExtractAccessor struct when the node type is const TensorReductionOp
template <typename OP, typename Dim, typename Expr, typename Dev>
struct ExtractAccessor<TensorEvaluator<const TensorReductionOp<OP, Dim, Expr>, Dev> > {
static inline auto getTuple(cl::sycl::handler& cgh, const TensorEvaluator<const TensorReductionOp<OP, Dim, Expr>, Dev> eval)
-> decltype(AccessorConstructor::template getAccessor<cl::sycl::access::mode::read, false>(cgh, eval)){
return AccessorConstructor::template getAccessor<cl::sycl::access::mode::read, false>(cgh, eval);
}
};
/// specialisation of the \ref ExtractAccessor struct when the node type is TensorReductionOp
template <typename OP, typename Dim, typename Expr, typename Dev>
struct ExtractAccessor<TensorEvaluator<TensorReductionOp<OP, Dim, Expr>, Dev> >
: ExtractAccessor<TensorEvaluator<const TensorReductionOp<OP, Dim, Expr>, Dev> >{};
/// template deduction for \ref ExtractAccessor
template <typename Evaluator>
auto createTupleOfAccessors(cl::sycl::handler& cgh, const Evaluator& expr)
-> decltype(ExtractAccessor<Evaluator>::getTuple(cgh, expr)) {
return ExtractAccessor<Evaluator>::getTuple(cgh, expr);
}
}
}
}
} /// namespace TensorSycl
} /// namespace internal
} /// namespace Eigen
#endif // UNSUPPORTED_EIGEN_CXX11_SRC_TENSOR_TENSORSYCL_EXTRACT_ACCESSOR_HPP

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@ -141,7 +141,30 @@ template <typename RHSExpr, typename Dev>
struct FunctorExtractor<TensorEvaluator<TensorEvalToOp<RHSExpr>, Dev> >
: FunctorExtractor<TensorEvaluator<const TensorEvalToOp<RHSExpr>, Dev> > {};
template<typename Dim, size_t NumOutputDim> struct DimConstr {
template<typename InDim>
static inline Dim getDim(InDim dims ) {return dims;}
};
template<typename Dim> struct DimConstr<Dim, 0> {
template<typename InDim>
static inline Dim getDim(InDim dims ) {return Dim(dims.TotalSize());}
};
template<typename Op, typename Dims, typename ArgType, template <class> class MakePointer_, typename Device>
struct FunctorExtractor<TensorEvaluator<const TensorReductionOp<Op, Dims, ArgType, MakePointer_>, Device>>{
typedef TensorEvaluator<const TensorReductionOp<Op, Dims, ArgType, MakePointer_>, Device> Evaluator;
typedef typename Eigen::internal::conditional<Evaluator::NumOutputDims==0, DSizes<typename Evaluator::Index, 1>, typename Evaluator::Dimensions >::type Dimensions;
const Dimensions m_dimensions;
const Dimensions& dimensions() const { return m_dimensions; }
FunctorExtractor(const TensorEvaluator<const TensorReductionOp<Op, Dims, ArgType, MakePointer_>, Device>& expr)
: m_dimensions(DimConstr<Dimensions, Evaluator::NumOutputDims>::getDim(expr.dimensions())) {}
};
template<typename Op, typename Dims, typename ArgType, template <class> class MakePointer_, typename Device>
struct FunctorExtractor<TensorEvaluator<TensorReductionOp<Op, Dims, ArgType, MakePointer_>, Device>>
: FunctorExtractor<TensorEvaluator<const TensorReductionOp<Op, Dims, ArgType, MakePointer_>, Device>>{};
/// template deduction function for FunctorExtractor
template <typename Evaluator>
auto inline extractFunctors(const Evaluator& evaluator)-> FunctorExtractor<Evaluator> {

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@ -43,8 +43,7 @@ struct CategoryCount<Arg,Args...>{
static const size_t Count = LeafCount<Arg>::Count + CategoryCount<Args...>::Count;
};
/// specialisation of the \ref LeafCount struct when the node type is const
/// TensorMap
/// specialisation of the \ref LeafCount struct when the node type is const TensorMap
template <typename PlainObjectType, int Options_, template <class> class MakePointer_>
struct LeafCount<const TensorMap<PlainObjectType, Options_, MakePointer_> > {
static const size_t Count =1;
@ -61,18 +60,15 @@ struct LeafCount<const CategoryExpr<OP, RHSExpr...> >: CategoryCount<RHSExpr...>
template <template <class, class...> class CategoryExpr, typename OP, typename... RHSExpr>
struct LeafCount<CategoryExpr<OP, RHSExpr...> > :LeafCount<const CategoryExpr<OP, RHSExpr...> >{};
/// specialisation of the \ref LeafCount struct when the node type is
/// const TensorSelectOp is an exception
/// specialisation of the \ref LeafCount struct when the node type is const TensorSelectOp is an exception
template <typename IfExpr, typename ThenExpr, typename ElseExpr>
struct LeafCount<const TensorSelectOp<IfExpr, ThenExpr, ElseExpr> > : CategoryCount<IfExpr, ThenExpr, ElseExpr> {};
/// specialisation of the \ref LeafCount struct when the node type is
/// TensorSelectOp
/// specialisation of the \ref LeafCount struct when the node type is TensorSelectOp
template <typename IfExpr, typename ThenExpr, typename ElseExpr>
struct LeafCount<TensorSelectOp<IfExpr, ThenExpr, ElseExpr> >: LeafCount<const TensorSelectOp<IfExpr, ThenExpr, ElseExpr> > {};
/// specialisation of the \ref LeafCount struct when the node type is const
/// TensorAssignOp
/// specialisation of the \ref LeafCount struct when the node type is const TensorAssignOp
template <typename LHSExpr, typename RHSExpr>
struct LeafCount<const TensorAssignOp<LHSExpr, RHSExpr> >: CategoryCount<LHSExpr,RHSExpr> {};
@ -81,31 +77,38 @@ struct LeafCount<const TensorAssignOp<LHSExpr, RHSExpr> >: CategoryCount<LHSExpr
template <typename LHSExpr, typename RHSExpr>
struct LeafCount<TensorAssignOp<LHSExpr, RHSExpr> > :LeafCount<const TensorAssignOp<LHSExpr, RHSExpr> >{};
/// specialisation of the \ref LeafCount struct when the node type is const
/// TensorForcedEvalOp
/// specialisation of the \ref LeafCount struct when the node type is const TensorForcedEvalOp
template <typename Expr>
struct LeafCount<const TensorForcedEvalOp<Expr> > {
static const size_t Count =1;
};
/// specialisation of the \ref LeafCount struct when the node type is
/// TensorForcedEvalOp
/// specialisation of the \ref LeafCount struct when the node type is TensorForcedEvalOp
template <typename Expr>
struct LeafCount<TensorForcedEvalOp<Expr> >: LeafCount<const TensorForcedEvalOp<Expr> > {};
/// specialisation of the \ref LeafCount struct when the node type is const
/// TensorEvalToOp
/// specialisation of the \ref LeafCount struct when the node type is const TensorEvalToOp
template <typename Expr>
struct LeafCount<const TensorEvalToOp<Expr> > {
static const size_t Count = 1 + CategoryCount<Expr>::Count;
};
/// specialisation of the \ref LeafCount struct when the node type is
/// TensorEvalToOp
/// specialisation of the \ref LeafCount struct when the node type is const TensorReductionOp
template <typename OP, typename Dim, typename Expr>
struct LeafCount<const TensorReductionOp<OP, Dim, Expr> > {
static const size_t Count =1;
};
/// specialisation of the \ref LeafCount struct when the node type is TensorReductionOp
template <typename OP, typename Dim, typename Expr>
struct LeafCount<TensorReductionOp<OP, Dim, Expr> >: LeafCount<const TensorReductionOp<OP, Dim, Expr> >{};
/// specialisation of the \ref LeafCount struct when the node type is TensorEvalToOp
template <typename Expr>
struct LeafCount<TensorEvalToOp<Expr> >: LeafCount<const TensorEvalToOp<Expr> >{};
}
}
} // namespace Eigen
} /// namespace TensorSycl
} /// namespace internal
} /// namespace Eigen
#endif // UNSUPPORTED_EIGEN_CXX11_SRC_TENSOR_TENSORSYCL_LEAF_COUNT_HPP

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@ -1,99 +0,0 @@
// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Mehdi Goli Codeplay Software Ltd.
// Ralph Potter Codeplay Software Ltd.
// Luke Iwanski Codeplay Software Ltd.
// Contact: <eigen@codeplay.com>
//
// This Source Code Form is subject to the terms of the Mozilla
// Public License v. 2.0. If a copy of the MPL was not distributed
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
/*****************************************************************
* TensorSyclPlaceHolder.h
*
* \brief:
* The PlaceHolder expression are nothing but a container preserving
* the order of actual data in the tuple of sycl buffer.
*
*****************************************************************/
#ifndef UNSUPPORTED_EIGEN_CXX11_SRC_TENSOR_TENSORSYCL_PLACEHOLDER_HPP
#define UNSUPPORTED_EIGEN_CXX11_SRC_TENSOR_TENSORSYCL_PLACEHOLDER_HPP
namespace Eigen {
namespace internal {
/// \struct PlaceHolder
/// \brief PlaceHolder is used to replace the \ref TensorMap in the expression
/// tree.
/// PlaceHolder contains the order of the leaf node in the expression tree.
template <typename Scalar, size_t N>
struct PlaceHolder {
static constexpr size_t I = N;
typedef Scalar Type;
};
/// \brief specialisation of the PlaceHolder node for const TensorMap
#define TENSORMAPPLACEHOLDER(CVQual)\
template <typename PlainObjectType, int Options_, template <class> class MakePointer_, size_t N>\
struct PlaceHolder<CVQual TensorMap<PlainObjectType, Options_, MakePointer_>, N> {\
static const size_t I = N;\
typedef CVQual TensorMap<PlainObjectType, Options_, MakePointer_> Type;\
typedef typename Type::Self Self;\
typedef typename Type::Base Base;\
typedef typename Type::Nested Nested;\
typedef typename Type::StorageKind StorageKind;\
typedef typename Type::Index Index;\
typedef typename Type::Scalar Scalar;\
typedef typename Type::RealScalar RealScalar;\
typedef typename Type::CoeffReturnType CoeffReturnType;\
};
TENSORMAPPLACEHOLDER(const)
TENSORMAPPLACEHOLDER()
#undef TENSORMAPPLACEHOLDER
/// \brief specialisation of the PlaceHolder node for TensorForcedEvalOp. The
/// TensorForcedEvalOp acts as a leaf node for its parent node.
#define TENSORFORCEDEVALPLACEHOLDER(CVQual)\
template <typename Expression, size_t N>\
struct PlaceHolder<CVQual TensorForcedEvalOp<Expression>, N> {\
static const size_t I = N;\
typedef CVQual TensorForcedEvalOp<Expression> Type;\
typedef typename Type::Nested Nested;\
typedef typename Type::StorageKind StorageKind;\
typedef typename Type::Index Index;\
typedef typename Type::Scalar Scalar;\
typedef typename Type::Packet Packet;\
typedef typename Type::RealScalar RealScalar;\
typedef typename Type::CoeffReturnType CoeffReturnType;\
typedef typename Type::PacketReturnType PacketReturnType;\
};
TENSORFORCEDEVALPLACEHOLDER(const)
TENSORFORCEDEVALPLACEHOLDER()
#undef TENSORFORCEDEVALPLACEHOLDER
template <typename PlainObjectType, int Options_, template <class> class Makepointer_, size_t N>
struct traits<PlaceHolder<const TensorMap<PlainObjectType, Options_, Makepointer_>, N> >: public traits<PlainObjectType> {
typedef traits<PlainObjectType> BaseTraits;
typedef typename BaseTraits::Scalar Scalar;
typedef typename BaseTraits::StorageKind StorageKind;
typedef typename BaseTraits::Index Index;
static const int NumDimensions = BaseTraits::NumDimensions;
static const int Layout = BaseTraits::Layout;
enum {
Options = Options_,
Flags = BaseTraits::Flags,
};
};
template <typename PlainObjectType, int Options_, template <class> class Makepointer_, size_t N>
struct traits<PlaceHolder<TensorMap<PlainObjectType, Options_, Makepointer_>, N> >
: traits<PlaceHolder<const TensorMap<PlainObjectType, Options_, Makepointer_>, N> > {};
} // end namespace internal
} // end namespoace Eigen
#endif // UNSUPPORTED_EIGEN_CXX11_SRC_TENSOR_TENSORSYCL_PLACEHOLDER_HPP

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@ -25,6 +25,17 @@
namespace Eigen {
namespace TensorSycl {
namespace internal {
/// \struct PlaceHolder
/// \brief PlaceHolder is used to replace the \ref TensorMap in the expression
/// tree.
/// PlaceHolder contains the order of the leaf node in the expression tree.
template <typename Scalar, size_t N>
struct PlaceHolder {
static constexpr size_t I = N;
typedef Scalar Type;
};
/// \sttruct PlaceHolderExpression
/// \brief it is used to create the PlaceHolder expression. The PlaceHolder
/// expression is a copy of expression type in which the TensorMap of the has
@ -113,7 +124,7 @@ ASSIGNEXPR()
#define TENSORMAPEXPR(CVQual)\
template <typename Scalar_, int Options_, int Options2_, int NumIndices_, typename IndexType_, template <class> class MakePointer_, size_t N>\
struct PlaceHolderExpression< CVQual TensorMap< Tensor<Scalar_, NumIndices_, Options_, IndexType_>, Options2_, MakePointer_>, N> {\
typedef CVQual Eigen::internal::PlaceHolder<CVQual TensorMap<Tensor<Scalar_, NumIndices_, Options_, IndexType_>, Options2_, MakePointer_>, N> Type;\
typedef CVQual PlaceHolder<CVQual TensorMap<Tensor<Scalar_, NumIndices_, Options_, IndexType_>, Options2_, MakePointer_>, N> Type;\
};
TENSORMAPEXPR(const)
@ -125,7 +136,7 @@ TENSORMAPEXPR()
#define FORCEDEVAL(CVQual)\
template <typename Expr, size_t N>\
struct PlaceHolderExpression<CVQual TensorForcedEvalOp<Expr>, N> {\
typedef CVQual Eigen::internal::PlaceHolder<CVQual TensorForcedEvalOp<Expr>, N> Type;\
typedef CVQual PlaceHolder<CVQual TensorForcedEvalOp<Expr>, N> Type;\
};
FORCEDEVAL(const)
@ -144,6 +155,18 @@ EVALTO(const)
EVALTO()
#undef EVALTO
/// specialisation of the \ref PlaceHolderExpression when the node is
/// TensorReductionOp
#define SYCLREDUCTION(CVQual)\
template <typename OP, typename Dims, typename Expr, size_t N>\
struct PlaceHolderExpression<CVQual TensorReductionOp<OP, Dims, Expr>, N>{\
typedef CVQual PlaceHolder<CVQual TensorReductionOp<OP, Dims,Expr>, N> Type;\
};
SYCLREDUCTION(const)
SYCLREDUCTION()
#undef SYCLREDUCTION
/// template deduction for \ref PlaceHolderExpression struct
template <typename Expr>
struct createPlaceHolderExpression {
@ -151,8 +174,8 @@ struct createPlaceHolderExpression {
typedef typename PlaceHolderExpression<Expr, TotalLeaves - 1>::Type Type;
};
}
}
} // internal
} // TensorSycl
} // namespace Eigen
#endif // UNSUPPORTED_EIGEN_CXX11_SRC_TENSOR_TENSORSYCL_PLACEHOLDER_EXPR_HPP

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@ -37,20 +37,20 @@ void run(Expr &expr, Dev &dev) {
typedef typename internal::createPlaceHolderExpression<Expr>::Type PlaceHolderExpr;
auto functors = internal::extractFunctors(evaluator);
size_t tileSize =dev.m_queue.get_device(). template get_info<cl::sycl::info::device::max_work_group_size>()/2;
dev.m_queue.submit([&](cl::sycl::handler &cgh) {
// create a tuple of accessors from Evaluator
auto tuple_of_accessors = internal::createTupleOfAccessors<decltype(evaluator)>(cgh, evaluator);
const auto range = utility::tuple::get<0>(tuple_of_accessors).get_range()[0];
size_t outTileSize = range;
if (range > 64) outTileSize = 64;
size_t yMode = range % outTileSize;
int yRange = static_cast<int>(range);
if (yMode != 0) yRange += (outTileSize - yMode);
size_t GRange=range;
if (tileSize>GRange) tileSize=GRange;
else if(GRange>tileSize){
size_t xMode = GRange % tileSize;
if (xMode != 0) GRange += (tileSize - xMode);
}
// run the kernel
cgh.parallel_for<PlaceHolderExpr>( cl::sycl::nd_range<1>(cl::sycl::range<1>(yRange), cl::sycl::range<1>(outTileSize)), [=](cl::sycl::nd_item<1> itemID) {
cgh.parallel_for<PlaceHolderExpr>( cl::sycl::nd_range<1>(cl::sycl::range<1>(GRange), cl::sycl::range<1>(tileSize)), [=](cl::sycl::nd_item<1> itemID) {
typedef typename internal::ConvertToDeviceExpression<Expr>::Type DevExpr;
auto device_expr =internal::createDeviceExpression<DevExpr, PlaceHolderExpr>(functors, tuple_of_accessors);
auto device_evaluator = Eigen::TensorEvaluator<decltype(device_expr.expr), Eigen::DefaultDevice>(device_expr.expr, Eigen::DefaultDevice());
@ -61,6 +61,7 @@ void run(Expr &expr, Dev &dev) {
});
dev.m_queue.throw_asynchronous();
}
evaluator.cleanup();
}
} // namespace TensorSycl

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@ -1,6 +1,6 @@
# generate split test header file only if it does not yet exist
# in order to prevent a rebuild everytime cmake is configured
if(NOT EXISTS ${CMAKE_CURRENT_BINARY_DIR}/split_test_helper.h)
if(NOT EXISTS ${CMAKE_CURRENT_BINARY_DIR}/split_test_helper.h)
file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/split_test_helper.h "")
foreach(i RANGE 1 999)
file(APPEND ${CMAKE_CURRENT_BINARY_DIR}/split_test_helper.h
@ -16,11 +16,11 @@ endif()
set_property(GLOBAL PROPERTY EIGEN_CURRENT_SUBPROJECT "Unsupported")
add_custom_target(BuildUnsupported)
include_directories(../../test ../../unsupported ../../Eigen
include_directories(../../test ../../unsupported ../../Eigen
${CMAKE_CURRENT_BINARY_DIR}/../../test)
find_package (Threads)
find_package(GoogleHash)
if(GOOGLEHASH_FOUND)
add_definitions("-DEIGEN_GOOGLEHASH_SUPPORT")
@ -134,7 +134,7 @@ ei_add_test(cxx11_tensor_roundings)
ei_add_test(cxx11_tensor_layout_swap)
ei_add_test(cxx11_tensor_io)
if("${CMAKE_SIZEOF_VOID_P}" EQUAL "8")
# This test requires __uint128_t which is only available on 64bit systems
# This test requires __uint128_t which is only available on 64bit systems
ei_add_test(cxx11_tensor_uint128)
endif()
endif()
@ -145,6 +145,7 @@ if(EIGEN_TEST_CXX11)
ei_add_test_sycl(cxx11_tensor_forced_eval_sycl "-std=c++11")
ei_add_test_sycl(cxx11_tensor_broadcast_sycl "-std=c++11")
ei_add_test_sycl(cxx11_tensor_device_sycl "-std=c++11")
ei_add_test_sycl(cxx11_tensor_reduction_sycl "-std=c++11")
endif(EIGEN_TEST_SYCL)
# It should be safe to always run these tests as there is some fallback code for
# older compiler that don't support cxx11.

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@ -0,0 +1,147 @@
// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2015
// Mehdi Goli Codeplay Software Ltd.
// Ralph Potter Codeplay Software Ltd.
// Luke Iwanski Codeplay Software Ltd.
// Contact: <eigen@codeplay.com>
//
// This Source Code Form is subject to the terms of the Mozilla
// Public License v. 2.0. If a copy of the MPL was not distributed
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
#define EIGEN_TEST_NO_LONGDOUBLE
#define EIGEN_TEST_NO_COMPLEX
#define EIGEN_TEST_FUNC cxx11_tensor_reduction_sycl
#define EIGEN_DEFAULT_DENSE_INDEX_TYPE int
#define EIGEN_USE_SYCL
#include "main.h"
#include <unsupported/Eigen/CXX11/Tensor>
static void test_full_reductions_sycl() {
cl::sycl::gpu_selector s;
cl::sycl::queue q(s, [=](cl::sycl::exception_list l) {
for (const auto& e : l) {
try {
std::rethrow_exception(e);
} catch (cl::sycl::exception e) {
std::cout << e.what() << std::endl;
}
}
});
Eigen::SyclDevice sycl_device(q);
const int num_rows = 452;
const int num_cols = 765;
array<int, 2> tensorRange = {{num_rows, num_cols}};
Tensor<float, 2> in(tensorRange);
in.setRandom();
Tensor<float, 0> full_redux;
Tensor<float, 0> full_redux_g;
full_redux = in.sum();
float* out_data = (float*)sycl_device.allocate(sizeof(float));
TensorMap<Tensor<float, 2> > in_gpu(in.data(), tensorRange);
TensorMap<Tensor<float, 0> > full_redux_gpu(out_data);
full_redux_gpu.device(sycl_device) = in_gpu.sum();
sycl_device.deallocate(out_data);
// Check that the CPU and GPU reductions return the same result.
VERIFY_IS_APPROX(full_redux_gpu(), full_redux());
}
static void test_first_dim_reductions_sycl() {
cl::sycl::gpu_selector s;
cl::sycl::queue q(s, [=](cl::sycl::exception_list l) {
for (const auto& e : l) {
try {
std::rethrow_exception(e);
} catch (cl::sycl::exception e) {
std::cout << e.what() << std::endl;
}
}
});
Eigen::SyclDevice sycl_device(q);
int dim_x = 145;
int dim_y = 1;
int dim_z = 67;
array<int, 3> tensorRange = {{dim_x, dim_y, dim_z}};
Tensor<float, 3> in(tensorRange);
in.setRandom();
Eigen::array<int, 1> red_axis;
red_axis[0] = 0;
Tensor<float, 2> redux = in.sum(red_axis);
array<int, 2> reduced_tensorRange = {{dim_y, dim_z}};
Tensor<float, 2> redux_g(reduced_tensorRange);
TensorMap<Tensor<float, 3> > in_gpu(in.data(), tensorRange);
float* out_data = (float*)sycl_device.allocate(dim_y*dim_z*sizeof(float));
TensorMap<Tensor<float, 2> > redux_gpu(out_data, dim_y, dim_z );
redux_gpu.device(sycl_device) = in_gpu.sum(red_axis);
sycl_device.deallocate(out_data);
// Check that the CPU and GPU reductions return the same result.
for(int j=0; j<dim_y; j++ )
for(int k=0; k<dim_z; k++ )
VERIFY_IS_APPROX(redux_gpu(j,k), redux(j,k));
}
static void test_last_dim_reductions_sycl() {
cl::sycl::gpu_selector s;
cl::sycl::queue q(s, [=](cl::sycl::exception_list l) {
for (const auto& e : l) {
try {
std::rethrow_exception(e);
} catch (cl::sycl::exception e) {
std::cout << e.what() << std::endl;
}
}
});
Eigen::SyclDevice sycl_device(q);
int dim_x = 567;
int dim_y = 1;
int dim_z = 47;
array<int, 3> tensorRange = {{dim_x, dim_y, dim_z}};
Tensor<float, 3> in(tensorRange);
in.setRandom();
Eigen::array<int, 1> red_axis;
red_axis[0] = 2;
Tensor<float, 2> redux = in.sum(red_axis);
array<int, 2> reduced_tensorRange = {{dim_x, dim_y}};
Tensor<float, 2> redux_g(reduced_tensorRange);
TensorMap<Tensor<float, 3> > in_gpu(in.data(), tensorRange);
float* out_data = (float*)sycl_device.allocate(dim_x*dim_y*sizeof(float));
TensorMap<Tensor<float, 2> > redux_gpu(out_data, dim_x, dim_y );
redux_gpu.device(sycl_device) = in_gpu.sum(red_axis);
sycl_device.deallocate(out_data);
// Check that the CPU and GPU reductions return the same result.
for(int j=0; j<dim_x; j++ )
for(int k=0; k<dim_y; k++ )
VERIFY_IS_APPROX(redux_gpu(j,k), redux(j,k));
}
void test_cxx11_tensor_reduction_sycl() {
CALL_SUBTEST((test_full_reductions_sycl()));
CALL_SUBTEST((test_first_dim_reductions_sycl()));
CALL_SUBTEST((test_last_dim_reductions_sycl()));
}