https://github.com/Microsoft/CNTK
Tip revision: 66f4d8d594cab128f5fe160ade2adfd04a164004 authored by Eldar Akchurin on 13 January 2017, 17:28:02 UTC
Adding more tests and fixing bugs in the randomizer/packer
Adding more tests and fixing bugs in the randomizer/packer
Tip revision: 66f4d8d
GPUSparseMatrix.h
//
// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE.md file in the project root for full license information.
//
#pragma once
//#include "CPUMatrix.h"
#include "GPUMatrix.h"
#include "CPUSparseMatrix.h"
#include <functional>
namespace Microsoft { namespace MSR { namespace CNTK {
//GPU Sparse Matrix, using cuSPARSE library.
//By default we are assuming CSR representation
// NOTE m_elemSizeAllocated (in base matrix) means the number of non-zero elements we have allocated space
// We are packing the CSR format (pointed to by m_pArray) as follows:
// ElemType elements[m_elemSizeAllocated]
// int colIdx[m_elemSizeAllocated]
// int rowIdxStart[m_numRows+1]
template <class ElemType>
class MATH_API GPUSparseMatrix : public BaseMatrix<ElemType>
{
public:
typedef BaseMatrix<ElemType> Base;
using Base::m_sliceViewOffset;
using Base::HasExternalBuffer;
using Base::SetBuffer;
using Base::GetNumStorageRows;
using Base::SetNumStorageRows;
using Base::GetNumStorageCols;
using Base::SetNumStorageCols;
using Base::SetComputeDeviceId;
using Base::SetSizeAllocated;
using Base::GetSizeAllocated;
using Base::ZeroInit;
using Base::ZeroValues;
using Base::m_sob;
using Base::ShallowCopyFrom;
using Base::GetBlockSize;
using Base::SetBlockSize;
using Base::GetTempHostBuffer;
using Base::SetTempHostBuffer;
using Base::GetTempHostBufferSize;
using Base::SetTempHostBufferSize;
using Base::BufferSizeAllocated;
using Base::GetTempDeviceBuffer;
using Base::VerifyResizable;
// without this, base members would require to use thi-> in GCC
public:
using Base::VerifyWritable;
using Base::ReserveTempDeviceBuffer;
using Base::GetComputeDeviceId;
using Base::Buffer;
using Base::GetNumRows;
using Base::GetNumCols;
using Base::SetNumRows;
using Base::SetNumCols;
using Base::GetNumElements;
using Base::OwnBuffer;
using Base::GetFormat;
using Base::SetFormat;
using Base::IsEmpty;
public:
GPUSparseMatrix(const size_t numRows, const size_t numCols, const size_t numNZ, DEVICEID_TYPE computeDevice, const MatrixFormat matrixFormat = MatrixFormat::matrixFormatSparseCSR);
explicit GPUSparseMatrix(DEVICEID_TYPE computeDevice, const MatrixFormat matrixFormat = MatrixFormat::matrixFormatSparseCSR);
GPUSparseMatrix(const GPUSparseMatrix<ElemType>&);
GPUSparseMatrix(const GPUMatrix<ElemType>&, const MatrixFormat matrixFormat = MatrixFormat::matrixFormatSparseCSR);
// #ifndef __unix__
GPUSparseMatrix(GPUSparseMatrix<ElemType>&&);
// #endif /* LINUX */
~GPUSparseMatrix();
public:
void Reset();
public:
// return col pointer, which is immediately following the non-zero element
// in memory format is always in the following order:
// Non-zero data elements, Full index locations, compressed index locations
// In CSR row data is compressed, in CSC col data is compressed
// Special Note: for the matrix may be a read-only column slice view of another
// matrix (only supported for CSC format today) and hence the NzValues needs
// to be offset accordingly.
inline const ElemType* NzValues() const
{
return Data();
}
inline ElemType* NzValues()
{
return Data();
}
GPUSPARSE_INDEX_TYPE NzCount() const
{
if (GetFormat() == matrixFormatSparseCSC)
return SecondaryIndexValueAt(GetNumCols()) - SecondaryIndexValueAt(0);
if (GetFormat() == matrixFormatSparseCSR )
return SecondaryIndexValueAt(GetNumRows()) - SecondaryIndexValueAt(0);
else if (GetFormat() == matrixFormatSparseBlockCol)
return (int)(GetNumRows() * GetBlockSize());
else
NOT_IMPLEMENTED;
}
inline size_t NzSize() const { return sizeof(ElemType) * NzCount(); } // actual number of element bytes in use
inline size_t GetNumNZElements() const { return NzCount(); }
void ClearNzCount();
// The sparse matrix representation of CSC/CSR uses one large matrix (m_pArray) with offsets to the Major/Secondary index location.
// m_pArray [0,nz] are the nz elements, [nz+1,2*nz+1] is the major index location, and [2*nz+2,2*nz+2+ numcols/rows] is the secondary
// index location.
GPUSPARSE_INDEX_TYPE* MajorIndexLocation() const // row/col ids in CSC/CSR format, blockId2col/blockId2row in BlockCol/BlockRow format
{
return (GPUSPARSE_INDEX_TYPE*) (Buffer() + GetSizeAllocated());
}
// Note: Data is already offset by the sliceViewOffset, so we can just add the allocated size to get the start of the MajorIndexLoc
GPUSPARSE_INDEX_TYPE* MajorIndexLocationWithSliceViewOffset() const
{
return (GPUSPARSE_INDEX_TYPE*) (Data() + GetSizeAllocated());
}
// MajorIndexCount depends on the format.
// 1. SparseBlockCol: numCols
// 2. SparseBlockRow: numRows
// 3. SparseCSC/CSR : nnz
// Note that NzCount is the number of non-zero elements currently in use. GetSizeAllocated is the number
// of nz values that will fit in the current buffer.
size_t MajorIndexCount() const
{
return MajorIndexCount(GetNumRows(), GetNumCols(), NzCount(), GetFormat());
}
size_t MajorIndexCount(const size_t numRows, const size_t numCols, const size_t numNZ, const MatrixFormat format) const
{
if (format == matrixFormatSparseBlockCol)
return numCols;
else if (format == matrixFormatSparseBlockRow)
return numRows;
else
return numNZ;
}
size_t MajorIndexSize() const // actual number of major index bytes in use
{
return sizeof(GPUSPARSE_INDEX_TYPE) * MajorIndexCount();
}
size_t ComputeMaxNZElemFromBufferSize(size_t numRows, size_t numCols, size_t bufferSize, MatrixFormat format)
{
if (format == matrixFormatSparseBlockCol)
return ( bufferSize - 2 * sizeof(GPUSPARSE_INDEX_TYPE) * numCols) / sizeof(ElemType);
else if (format == matrixFormatSparseBlockRow)
return (bufferSize - 2 * sizeof(GPUSPARSE_INDEX_TYPE) * numRows) / sizeof(ElemType);
else if (format == matrixFormatSparseCSC)
return (bufferSize - sizeof(GPUSPARSE_INDEX_TYPE) * (numCols + 1)) / (sizeof(GPUSPARSE_INDEX_TYPE) + sizeof(ElemType));
else if (format == matrixFormatSparseCSR)
return (bufferSize - sizeof(GPUSPARSE_INDEX_TYPE) * (numRows + 1)) / (sizeof(GPUSPARSE_INDEX_TYPE) + sizeof(ElemType));
else
NOT_IMPLEMENTED;
}
// Since the m_sliceViewOffset effects Data and MajorIndexLocation differently than SecondaryIndexLocation, we compute it fully here.
GPUSPARSE_INDEX_TYPE* SecondaryIndexLocation() const // compressed index, col/row in CSC/CSR format, col2blockId/row2blockId in BlockCol/BlockRow format
{
if (GetFormat() == matrixFormatSparseBlockCol)
return MajorIndexLocation() + GetNumCols();
else if (GetFormat() == matrixFormatSparseBlockRow)
return MajorIndexLocation() + GetNumRows();
else
{
size_t size = GetSizeAllocated();
return (GPUSPARSE_INDEX_TYPE*)((char*)Buffer() + sizeof(GPUSPARSE_INDEX_TYPE) * size + sizeof(ElemType)*size) + m_sliceViewOffset;
}
// return MajorIndexLocation() + m_elemSizeAllocated + m_sliceViewOffset;
}
size_t SecondaryIndexCount(const size_t numRows, const size_t numCols, const size_t numNZReserved, const MatrixFormat format) const
{
if (format == matrixFormatSparseBlockCol)
return numCols;
else if (format == matrixFormatSparseBlockRow)
return numRows;
else if (format == matrixFormatSparseCSC)
return numCols + 1;
else if (format == matrixFormatSparseCSR)
return numRows + 1;
else
return numNZReserved; // COO format
}
size_t SecondaryIndexCount() const
{
return SecondaryIndexCount(GetNumRows(), GetNumCols(), GetSizeAllocated(), GetFormat());
}
// get size for compressed index
size_t SecondaryIndexSize() const
{
return (SecondaryIndexCount()) * sizeof(GPUSPARSE_INDEX_TYPE);
}
size_t BufferSizeNeeded(const size_t numRows, const size_t numCols, const size_t numNZ, const MatrixFormat format) const
{
return sizeof(ElemType) * numNZ + sizeof(GPUSPARSE_INDEX_TYPE) * (MajorIndexCount(numRows, numCols, numNZ, format) + SecondaryIndexCount(numRows, numCols, numNZ, format));
}
// SecondaryIndexValueAt calls SecondaryIndexLocation which is already appropriately offset by m_sliceViewOffset
inline ElemType* Data() const
{
return (Buffer() +
((GetFormat() == matrixFormatSparseCSC || GetFormat() == matrixFormatSparseCSR) ? SecondaryIndexValueAt(0) : 0));
}
inline size_t GetNumElemAllocated() const
{
return GetSizeAllocated();
}
inline size_t GetSizeElemAllocated() const
{
return sizeof(ElemType) * GetSizeAllocated();
}
// the column and row locations will swap based on what format we are in. Full index always follows the data array
GPUSPARSE_INDEX_TYPE* RowLocation() const
{
// not a valid function for other formats
assert(GetFormat() == matrixFormatSparseCSC || GetFormat() == matrixFormatSparseCSR);
return (GetFormat() & matrixFormatRowMajor) ? SecondaryIndexLocation() : MajorIndexLocation();
}
size_t RowSize() const // actual number of bytes in use
{
// not a valid function for other formats
assert(GetFormat() == matrixFormatSparseCSC || GetFormat() == matrixFormatSparseCSR);
return (GetFormat() & matrixFormatRowMajor) ? SecondaryIndexSize() : MajorIndexSize();
}
GPUSPARSE_INDEX_TYPE* ColLocation() const
{
// not a valid function for other formats
assert(GetFormat() == matrixFormatSparseCSC || GetFormat() == matrixFormatSparseCSR);
return (GetFormat() & matrixFormatRowMajor) ? MajorIndexLocation() : SecondaryIndexLocation();
}
size_t ColSize() const // actual number of bytes in use
{
// not a valid function for other formats
assert(GetFormat() == matrixFormatSparseCSC || GetFormat() == matrixFormatSparseCSR);
return (GetFormat() & matrixFormatRowMajor) ? MajorIndexSize() : SecondaryIndexSize();
}
GPUSPARSE_INDEX_TYPE SecondaryIndexValueAt(size_t idx) const;
GPUSPARSE_INDEX_TYPE* BlockId2ColOrRow() const
{
// not a valid function for other formats
assert(GetFormat() == matrixFormatSparseBlockCol || GetFormat() == matrixFormatSparseBlockRow);
return MajorIndexLocation();
}
GPUSPARSE_INDEX_TYPE* ColOrRow2BlockId() const
{
// not a valid function for other formats
assert(GetFormat() == matrixFormatSparseBlockCol || GetFormat() == matrixFormatSparseBlockRow);
return SecondaryIndexLocation();
}
//void SetValue(const CPUMatrix<ElemType>& denseMatrix);
void SetValue(const GPUSparseMatrix<ElemType>& deepCopyFrom);
void SetValue(const CPUSparseMatrix<ElemType>& deepCopyFrom);
void SetValue(const GPUMatrix<ElemType>& denseMatrix, const MatrixFormat matrixFormat);
void SetValue(const GPUMatrix<ElemType>& denseMatrix);
GPUSPARSE_INDEX_TYPE* GetCondensedVector() const;
void MaskColumnsValue(const GPUMatrix<char>& columnsMask, ElemType val);
void Reshape(const size_t numRows, const size_t numCols);
void ResizeAsAndCopyIndexFrom(const GPUSparseMatrix<ElemType>& a, const bool growOnly = true);
void Allocate(const size_t numRows, const size_t numCols, const size_t numNZElemToReserve, const bool growOnly = true, bool keepExistingValues = true); // matrix format will affect the size to allocate
void RequireSizeAndAllocate(const size_t numRows, const size_t numCols, const size_t numNZElemToReserve, const MatrixFormat matrixFormat, const bool growOnly = true, bool keepExistingValues = true); // matrix format will affect the size to allocate
void RequireSizeAndAllocate(const size_t numRows, const size_t numCols, const size_t numNZElemToReserve = 10000, const bool growOnly = true, bool keepExistingValues = false);
void RequireSize(const size_t numRows, const size_t numCols, const MatrixFormat format, const bool growOnly = true);
void RequireSize(const size_t numRows, const size_t numCols, const bool growOnly = true);
void Resize(const size_t numRows, const size_t numCols, const size_t numNZElemToReserve, const MatrixFormat matrixFormat, const bool growOnly = true); // matrix format will affect the size to allocate
void Resize(const size_t numRows, const size_t numCols, const size_t numNZElemToReserve = 10000, const bool growOnly = true);
GPUSparseMatrix<ElemType> Transpose() const;
void InplaceTranspose();
GPUSparseMatrix<ElemType>& AssignTransposeOf(const GPUSparseMatrix<ElemType>& a);
GPUSparseMatrix<ElemType> ColumnSlice(size_t startColumn, size_t numCols) const;
GPUMatrix<ElemType> CopyColumnSliceToDense(size_t startColumn, size_t numCols) const;
void AssignColumnSliceToDense(GPUMatrix<ElemType>& slice, size_t startColumn, size_t numCols) const;
GPUMatrix<ElemType> DiagonalToDense() const;
GPUMatrix<ElemType> CopyToDenseMatrix() const;
void CopyToDenseMatrix(GPUMatrix<ElemType>& denseMatrix) const;
void CopyToCPUSparseMatrix(CPUSparseMatrix<ElemType>& cpuSparseMatrix) const;
void ChangeDeviceTo(DEVICEID_TYPE toId);
GPUSparseMatrix<ElemType>& operator=(const GPUSparseMatrix<ElemType>& deepCopy);
// #ifndef __unix__
GPUSparseMatrix<ElemType>& operator=(GPUSparseMatrix<ElemType>&& moveFrom);
// #endif /* LINUX */
GPUSparseMatrix<ElemType> operator+(const GPUSparseMatrix<ElemType>& a) const;
GPUSparseMatrix<ElemType> operator-(const GPUSparseMatrix<ElemType>& a) const;
GPUSparseMatrix<ElemType>& operator^=(const ElemType alpha); // element-wise power
GPUSparseMatrix<ElemType> operator^(const ElemType alpha) const; // element-wise power
GPUSparseMatrix<ElemType>& operator*=(const ElemType alpha);
GPUSparseMatrix<ElemType> operator*(const ElemType alpha) const;
GPUSparseMatrix<ElemType>& AssignElementPowerOf(const GPUSparseMatrix<ElemType>& a, const ElemType power);
bool IsEqualTo(const GPUSparseMatrix<ElemType>& a, const ElemType threshold = 1e-8) const;
bool IsEqualTo(const GPUMatrix<ElemType>& a, const ElemType threshold = 1e-8) const;
public:
// Sets sparse matrix in CSR format. this acts as deep copy
void SetMatrixFromCSRFormat(const CPUSPARSE_INDEX_TYPE* h_CSRRow, const CPUSPARSE_INDEX_TYPE* h_Col, const ElemType* h_Val,
const size_t nz, const size_t numRows, const size_t numCols, const bool IsOnDevice = false, const DEVICEID_TYPE devId = -1);
void SetMatrixFromCSCFormat(const CPUSPARSE_INDEX_TYPE* h_CSCCol, const CPUSPARSE_INDEX_TYPE* h_Row, const ElemType* h_Val,
const size_t nz, const size_t numRows, const size_t numCols, const bool IsOnDevice = false, const DEVICEID_TYPE devId = -1, DataTransferer* transferer = nullptr);
// Gets sparse matrix in CSR format. this acts as deep copy. All passed pointers must be NULL. the function will allocate memory itself.
void GetMatrixFromCSRFormat(CPUSPARSE_INDEX_TYPE*& h_CSRRow, CPUSPARSE_INDEX_TYPE*& h_Col, ElemType*& h_Val, size_t& numElemAllocated, size_t& nz, size_t& numRows, size_t& numCols) const;
void GetMatrixFromCSCFormat(CPUSPARSE_INDEX_TYPE*& h_CSCCol, CPUSPARSE_INDEX_TYPE*& h_Row, ElemType*& h_Val, size_t& numElemAllocated, size_t& nz, size_t& numRows, size_t& numCols) const;
void ConvertToSparseFormat(MatrixFormat newFormat);
void ConvertToSparseFormat(MatrixFormat newFormat, GPUSparseMatrix<ElemType>& outMatrix) const;
bool IsValid() const;
public:
GPUSparseMatrix<ElemType>& ElementInverse();
GPUSparseMatrix<ElemType>& AssignElementInverseOf(const GPUSparseMatrix<ElemType>& a);
GPUSparseMatrix<ElemType>& InplaceLinearRectifierDerivative();
GPUSparseMatrix<ElemType>& AssignLinearRectifierDerivativeOf(const GPUSparseMatrix<ElemType>& a);
GPUSparseMatrix<ElemType>& InplaceSigmoid();
GPUSparseMatrix<ElemType>& AssignSigmoidOf(const GPUSparseMatrix<ElemType>& a);
GPUSparseMatrix<ElemType>& InplaceTanh();
GPUSparseMatrix<ElemType>& AssignTanhOf(const GPUSparseMatrix<ElemType>& a);
GPUSparseMatrix<ElemType>& InplaceSqrt();
GPUSparseMatrix<ElemType>& AssignSqrtOf(const GPUSparseMatrix<ElemType>& a);
GPUSparseMatrix<ElemType>& InplaceExp();
GPUSparseMatrix<ElemType>& AssignExpOf(const GPUSparseMatrix<ElemType>& a);
GPUSparseMatrix<ElemType>& InplaceLog();
GPUSparseMatrix<ElemType>& AssignLogOf(const GPUSparseMatrix<ElemType>& a);
GPUSparseMatrix<ElemType>& InplaceAbs();
GPUSparseMatrix<ElemType>& AssignAbsOf(const GPUSparseMatrix<ElemType>& a);
GPUSparseMatrix<ElemType>& InplaceTruncate(const ElemType threshold);
GPUSparseMatrix<ElemType>& InplaceSoftThreshold(const ElemType threshold);
GPUSparseMatrix<ElemType>& InplaceTruncateBottom(const ElemType threshold);
GPUSparseMatrix<ElemType>& AssignTruncateBottomOf(const GPUSparseMatrix<ElemType>& a, const ElemType threshold);
GPUSparseMatrix<ElemType>& InplaceTruncateTop(const ElemType threshold);
GPUSparseMatrix<ElemType>& AssignTruncateTopOf(const GPUSparseMatrix<ElemType>& a, const ElemType threshold);
GPUSparseMatrix<ElemType>& SetToZeroIfAbsLessThan(const ElemType threshold);
ElemType SumOfElements() const; // sum of all elements
ElemType SumOfAbsElements() const; // sum of all abs(elements)
ElemType FrobeniusNorm() const;
ElemType MatrixNormInf() const;
ElemType MatrixNorm1() const;
ElemType MatrixNorm0() const
{
return (ElemType) GetNumNZElements();
};
public:
// Performs C = alpha ? op ( S ) ? D + beta ? C; Where S is sparse and D and C are dense
static void MultiplyAndWeightedAdd(ElemType alpha, const GPUMatrix<ElemType>& a, const bool transposeA, const GPUSparseMatrix<ElemType>& b,
const bool transposeB, ElemType beta, GPUMatrix<ElemType>& c);
static void MultiplyAndWeightedAdd(ElemType alpha, const GPUSparseMatrix<ElemType>& S, const bool transposeS, const GPUMatrix<ElemType>& D,
const bool transposeD, ElemType beta, GPUMatrix<ElemType>& C);
static void MultiplyAndAdd(ElemType alpha, const GPUMatrix<ElemType>& lhs, const bool transposeA, const GPUSparseMatrix<ElemType>& rhs,
const bool transposeB, GPUSparseMatrix<ElemType>& c);
static void ScaleAndAdd(const ElemType alpha, const GPUSparseMatrix<ElemType>& lhs, GPUMatrix<ElemType>& c);
static void ConvolveAndWeightedAdd(ElemType alpha, const GPUMatrix<ElemType>& lhs, const bool transposeA, const GPUSparseMatrix<ElemType>& rhs,
const bool transposeB, ElemType beta, GPUMatrix<ElemType>& c, size_t numChannels, size_t horizontalSubsample, bool padding, bool channelwise);
static void TensorShuffleScaleAndAdd(ElemType keepWeight, const GPUSparseMatrix<ElemType>& a, size_t D, size_t S, size_t M, size_t K, size_t T, ElemType scaleFactor, const GPUSparseMatrix<ElemType>& b, GPUSparseMatrix<ElemType>& c);
void NormalGrad(GPUMatrix<ElemType>& c, const ElemType momentum);
ElemType Adagrad(GPUMatrix<ElemType>& c, const bool needAveMultiplier);
static void Multiply(const GPUSparseMatrix<ElemType>& S, const GPUMatrix<ElemType>& D, GPUMatrix<ElemType>& C);
static void Multiply(const GPUMatrix<ElemType>& D, const GPUSparseMatrix<ElemType>& S, GPUMatrix<ElemType>& C);
static void Multiply(const GPUSparseMatrix<ElemType>& S1, bool transposeS1, const GPUSparseMatrix<ElemType>& S2, bool transposeS2, GPUSparseMatrix<ElemType>& C);
GPUSparseMatrix<ElemType>& AssignProductOf(const GPUSparseMatrix<ElemType>& a, const bool transposeA, const GPUSparseMatrix<ElemType>& b, const bool transposeB);
static ElemType InnerProductOfMatrices(const GPUSparseMatrix<ElemType>& a, const GPUMatrix<ElemType>& b);
static ElemType InnerProductOfMatrices(const GPUMatrix<ElemType>& a, const GPUSparseMatrix<ElemType>& b);
static void ScaleAndAdd(ElemType alpha, const GPUSparseMatrix<ElemType>& a, ElemType beta, const GPUSparseMatrix<ElemType>& b, GPUSparseMatrix<ElemType>& c);
static void ScaleAndAdd(ElemType alpha, const GPUSparseMatrix<ElemType>& a, ElemType beta, const GPUMatrix<ElemType>& b, GPUMatrix<ElemType>& c);
static void ScaleAndAdd(ElemType alpha, const GPUMatrix<ElemType>& a, ElemType beta, const GPUSparseMatrix<ElemType>& b, GPUMatrix<ElemType>& c);
static void Scale(ElemType alpha, GPUSparseMatrix<ElemType>& a);
static void ElementWisePower(ElemType alpha, const GPUSparseMatrix<ElemType>& a, GPUSparseMatrix<ElemType>& c);
static bool AreEqual(const GPUSparseMatrix<ElemType>& a, const GPUSparseMatrix<ElemType>& b, const ElemType threshold = 1e-8);
static bool AreEqual(const GPUSparseMatrix<ElemType>& a, const GPUMatrix<ElemType>& b, const ElemType threshold = 1e-8);
static bool AreEqual(const GPUMatrix<ElemType>& a, const GPUSparseMatrix<ElemType>& b, const ElemType threshold = 1e-8);
// For these two, I should also add a version which would return GPUSparseMatrix, since Dense.*Sparse =Sparse.*Dense=Sparse
static GPUMatrix<ElemType> ElementProductOf(const GPUSparseMatrix<ElemType>& a, const GPUMatrix<ElemType>& b);
static GPUMatrix<ElemType> ElementProductOf(const GPUMatrix<ElemType>& a, const GPUSparseMatrix<ElemType>& b);
public:
// See: http://stackoverflow.com/questions/4660123/overloading-friend-operator-for-template-class/4661372#4661372
template <class ElemTypeDummy>
friend MATH_API File& operator>>(File& stream, GPUSparseMatrix<ElemTypeDummy>& us);
template <class ElemTypeDummy>
friend MATH_API File& operator<<(File& stream, const GPUSparseMatrix<ElemTypeDummy>& us);
private:
void* ReserveTempHostBuffer(const size_t sizeInByte) const;
template <class OutType, class InType>
static void ConvertBuffer(OutType* outBuffer, const InType* inBuffer, const size_t size);
private:
void ZeroInit(const MatrixFormat matrixFormat, const DEVICEID_TYPE deviceId);
private:
void performElementWiseFunction(const ElementWiseOperator kind, const GPUSparseMatrix<ElemType>& src);
void DeepCopy(const GPUSparseMatrix<ElemType>& deepCopyFrom);
void PrepareBuffer(const size_t numRows, const size_t numCols, const bool canReuseBuffer, std::function<size_t(GPUSPARSE_INDEX_TYPE* csrRowPtrC)> func);
size_t ElemCountFromBufferSize(const size_t numRows, const size_t numCols, const MatrixFormat format, const size_t totalBufferSize) const;
size_t ElemCountFromBufferSize() const;
DEVICEID_TYPE PrepareDevice(const DEVICEID_TYPE deviceId = -1) const;
size_t IdentifyRowsWithValues() const;
};
}}}