cu-sp-matrix.h
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// cudamatrix/cu-sp-matrix.h
// Copyright 2009-2013 Karel Vesely
// 2014 Johns Hopkins University (author: Daniel Povey)
// See ../../COPYING for clarification regarding multiple authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
// WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
// MERCHANTABLITY OR NON-INFRINGEMENT.
// See the Apache 2 License for the specific language governing permissions and
// limitations under the License.
#ifndef KALDI_CUDAMATRIX_CU_SP_MATRIX_H_
#define KALDI_CUDAMATRIX_CU_SP_MATRIX_H_
#include <sstream>
#include "cudamatrix/cu-common.h"
#include "matrix/matrix-common.h"
#include "matrix/sp-matrix.h"
#include "cudamatrix/cu-array.h"
#include "cudamatrix/cu-math.h"
#include "cudamatrix/cu-packed-matrix.h"
#include "cudamatrix/cu-matrix.h"
namespace kaldi {
/// TraceSpSp returns tr(A B)
template<typename Real, typename OtherReal>
Real TraceSpSp(const CuSpMatrix<Real> &A, const CuSpMatrix<OtherReal> &B);
template<typename Real>
class CuSpMatrix : public CuPackedMatrix<Real> {
friend class CuMatrixBase<Real>;
friend class CuVectorBase<Real>;
friend class CuTpMatrix<Real>;
friend class CuSubMatrix<Real>;
friend class CuRand<Real>;
template<class R, class S>
friend R TraceSpSp(const CuSpMatrix<R> &A, const CuSpMatrix<S> &B);
public:
CuSpMatrix(): CuPackedMatrix<Real>() {}
explicit CuSpMatrix(MatrixIndexT r, MatrixResizeType resize_type = kSetZero)
: CuPackedMatrix<Real>(r, resize_type) {}
explicit CuSpMatrix(const SpMatrix<Real> &orig)
: CuPackedMatrix<Real>(orig) {}
// This constructor lacks the "explicit" keyword so that
// we can include it in std::vector.
CuSpMatrix(const CuSpMatrix<Real> &orig)
: CuPackedMatrix<Real>(orig) {}
explicit CuSpMatrix(const CuMatrixBase<Real> &orig,
SpCopyType copy_type = kTakeLower)
: CuPackedMatrix<Real>(orig.NumRows(), kUndefined) {
CopyFromMat(orig, copy_type);
}
CuSpMatrix<Real> &operator = (const CuSpMatrix<Real> &in);
~CuSpMatrix() {}
inline void Resize(MatrixIndexT nRows, MatrixResizeType resize_type = kSetZero) {
CuPackedMatrix<Real>::Resize(nRows, resize_type);
}
Real FrobeniusNorm() const { return sqrt(TraceSpSp(*this, *this)); }
bool IsUnit(Real tol = 0.001) const;
bool ApproxEqual(const CuSpMatrix<Real> &other, Real tol = 0.001) const;
void CopyFromSp(const CuSpMatrix<Real> &other) {
CuPackedMatrix<Real>::CopyFromPacked(other);
}
void CopyFromSp(const SpMatrix<Real> &other) {
CuPackedMatrix<Real>::CopyFromPacked(other);
}
void CopyFromMat(const CuMatrixBase<Real> &orig,
SpCopyType copy_type = kTakeLower);
void CopyToSp(SpMatrix<Real> *dst) const {
CuPackedMatrix<Real>::CopyToPacked(dst);
}
inline CuValue<Real> operator() (MatrixIndexT r, MatrixIndexT c) {
if (static_cast<UnsignedMatrixIndexT>(c) >
static_cast<UnsignedMatrixIndexT>(r))
std::swap(c, r);
KALDI_ASSERT(static_cast<UnsignedMatrixIndexT>(r) <
static_cast<UnsignedMatrixIndexT>(this->num_rows_));
return CuValue<Real>(this->data_ + (r * (r+1)) / 2 + c);
}
inline Real operator() (MatrixIndexT r, MatrixIndexT c) const {
if (static_cast<UnsignedMatrixIndexT>(c) >
static_cast<UnsignedMatrixIndexT>(r))
std::swap(c, r);
KALDI_ASSERT(static_cast<UnsignedMatrixIndexT>(r) <
static_cast<UnsignedMatrixIndexT>(this->num_rows_));
return CuValue<Real>(this->data_ + (r * (r+1)) / 2 + c); // will be
// casted to Real.
}
/// Note: the CuMatrix version of the Invert() function will only work for
/// positive definite matrices; it is based on Cholesky.
void Invert();
void AddVec2(const Real alpha, const CuVectorBase<Real> &v);
void AddMat2(const Real alpha, const CuMatrixBase<Real> &M,
MatrixTransposeType transM, const Real beta);
void AddSp(const Real alpha, const CuSpMatrix<Real> &Ma) {
this->AddPacked(alpha, Ma);
}
protected:
inline const SpMatrix<Real> &Mat() const {
return *(reinterpret_cast<const SpMatrix<Real>* >(this));
}
inline SpMatrix<Real> &Mat() {
return *(reinterpret_cast<SpMatrix<Real>* >(this));
}
};
template<typename Real>
inline bool ApproxEqual(const CuSpMatrix<Real> &A,
const CuSpMatrix<Real> &B, Real tol = 0.001) {
return A.ApproxEqual(B, tol);
}
template<typename Real>
inline void AssertEqual(const CuSpMatrix<Real> &A,
const CuSpMatrix<Real> &B, Real tol = 0.001) {
KALDI_ASSERT(ApproxEqual(A, B, tol));
}
template<typename Real>
SpMatrix<Real>::SpMatrix(const CuSpMatrix<Real> &cu) {
Resize(cu.NumRows());
cu.CopyToSp(this);
}
} // namespace
#endif