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#include <cxxstd/iostream.h>
#include <flens/flens.h>
#ifdef VECSUM
#define NB 8
//------------------------------------------------------------------------------
namespace flens {
template <typename ALPHA, typename TX, typename TY>
void
copy_NB(ALPHA alpha, const TX *x, TY *y)
{
/*
for (int i=0; i<NB; ++i) {
y[i] = alpha*x[i];
}
*/
y[ 0] = x[ 0];
y[ 1] = x[ 1];
y[ 2] = x[ 2];
y[ 3] = x[ 3];
y[ 4] = x[ 4];
y[ 5] = x[ 5];
y[ 6] = x[ 6];
y[ 7] = x[ 7];
y[ 0] *= alpha;
y[ 1] *= alpha;
y[ 2] *= alpha;
y[ 3] *= alpha;
y[ 4] *= alpha;
y[ 5] *= alpha;
y[ 6] *= alpha;
y[ 7] *= alpha;
}
template <typename ALPHA, typename TX, typename TY>
void
add_NB(ALPHA alpha, const TX *x, TY *y)
{
/*
for (int i=0; i<NB; ++i) {
y[i] += alpha*x[i];
}
*/
# ifndef HAVE_SSE
y[ 0] += alpha*x[ 0];
y[ 1] += alpha*x[ 1];
y[ 2] += alpha*x[ 2];
y[ 3] += alpha*x[ 3];
y[ 4] += alpha*x[ 4];
y[ 5] += alpha*x[ 5];
y[ 6] += alpha*x[ 6];
y[ 7] += alpha*x[ 7];
# else
# ifdef HAVE_AVX
__m256d x1_, x2_, y1_, y2_;
__m256d alpha_ = mm256_set1_pd_(alpha);
x1_ = mm256_loadu_pd_(x);
x2_ = mm256_loadu_pd_(x+4);
x1_ = mm256_mul_pd_(alpha_, x1_);
x2_ = mm256_mul_pd_(alpha_, x2_);
y1_ = mm256_loadu_pd_(y);
y2_ = mm256_loadu_pd_(y+4);
y1_ = mm256_add_pd_(y1_, x1_);
y2_ = mm256_add_pd_(y2_, x2_);
mm256_storeu_pd_(y , y1_);
mm256_storeu_pd_(y+4, y2_);
# else
__m128d x1_, x2_, x3_, x4_ , y1_, y2_, y3_, y4_;
__m128d alpha_ = mm_set1_pd_(alpha);
x1_ = mm_loadu_pd_(x);
x2_ = mm_loadu_pd_(x+2);
x3_ = mm_loadu_pd_(x+4);
x4_ = mm_loadu_pd_(x+6);
x1_ = mm_mul_pd_(alpha_, x1_);
x2_ = mm_mul_pd_(alpha_, x2_);
x3_ = mm_mul_pd_(alpha_, x3_);
x4_ = mm_mul_pd_(alpha_, x4_);
y1_ = mm_loadu_pd_(y);
y2_ = mm_loadu_pd_(y+2);
y3_ = mm_loadu_pd_(y+4);
y4_ = mm_loadu_pd_(y+6);
y1_ = mm_add_pd_(y1_, x1_);
y2_ = mm_add_pd_(y2_, x2_);
y3_ = mm_add_pd_(y3_, x3_);
y4_ = mm_add_pd_(y4_, x4_);
mm_storeu_pd_(y , y1_);
mm_storeu_pd_(y+2, y2_);
mm_storeu_pd_(y+4, y3_);
mm_storeu_pd_(y+6, y4_);
# endif // HAVE_AVX
# endif // HAVE_SSE
}
} // namespace flens
//------------------------------------------------------------------------------
namespace flens {
template <typename IndexType, typename ALPHA, typename VX, typename VY>
void
copy(IndexType i0, IndexType nb, ALPHA alpha, const DenseVector<VX> &x,
DenseVector<VY> &y)
{
typedef typename DenseVector<VX>::ElementType TX;
typedef typename DenseVector<VY>::ElementType TY;
const IndexType incX = x.stride();
const TX *x_ = x.data() + i0*incX;
const IndexType incY = y.stride();
TY *y_ = y.data() + i0*incY;
if (incX==1 && incY==1) {
if (nb==NB) {
copy_NB(alpha, x_, y_);
} else {
for (IndexType i=0; i<nb; ++i) {
y_[i] = alpha * x_[i];
}
}
} else {
for (IndexType i=0; i<nb; ++i, x_+=incX, y_+=incY) {
*y_ = alpha * (*x_);
}
}
}
template <typename IndexType, typename ALPHA, typename VX, typename VY>
void
add(IndexType i0, IndexType nb, ALPHA alpha, const DenseVector<VX> &x,
DenseVector<VY> &y)
{
typedef typename DenseVector<VX>::ElementType TX;
typedef typename DenseVector<VY>::ElementType TY;
const IndexType incX = x.stride();
const TX *x_ = x.data() + i0*incX;
const IndexType incY = y.stride();
TY *y_ = y.data() + i0*incY;
if (incX==1 && incY==1) {
if (nb==NB) {
add_NB(alpha, x_, y_);
} else {
for (IndexType i=0; i<nb; ++i) {
y_[i] += alpha * x_[i];
}
}
} else {
for (IndexType i=0; i<nb; ++i, x_+=incX, y_+=incY) {
*y_ += alpha * (*x_);
}
}
}
} // namespace flens
//------------------------------------------------------------------------------
namespace flens {
template <typename IndexType, typename ALPHA, typename VX1, typename VX2,
typename VY>
void
copy(IndexType i0, IndexType nb, ALPHA alpha,
const VectorClosure<OpAdd, VX1, VX2> &x,
DenseVector<VY> &y)
{
copy(i0, nb, alpha, x.left(), y);
add(i0, nb, alpha, x.right(), y);
}
template <typename IndexType, typename ALPHA, typename SV, typename VX,
typename VY>
typename RestrictTo<IsScalarValue<SV>::value,
void>::Type
copy(IndexType i0, IndexType nb, ALPHA alpha,
const VectorClosure<OpMult, SV, VX> &x,
DenseVector<VY> &y)
{
copy(i0, nb, alpha*x.left().value(), x.right(), y);
}
template <typename IndexType, typename ALPHA, typename VX1, typename VX2,
typename VY>
void
add(IndexType i0, IndexType nb, ALPHA alpha,
const VectorClosure<OpAdd, VX1, VX2> &x,
DenseVector<VY> &y)
{
add(i0, nb, alpha, x.left(), y);
add(i0, nb, alpha, x.right(), y);
}
template <typename IndexType, typename ALPHA, typename VX1, typename VX2,
typename VY>
void
add(IndexType i0, IndexType nb, ALPHA alpha,
const VectorClosure<OpMult, VX1, VX2> &x,
DenseVector<VY> &y)
{
add(i0, nb, alpha*x.left().value(), x.right(), y);
}
} // namespace flens
//------------------------------------------------------------------------------
namespace flens { namespace blas {
//
// IsDenseVectorSum: Trait for vector sums of form alpha1*x1 + alpha2*x2 + ...
//
template <typename V>
struct IsDenseVectorSum
{
static const bool value = IsDenseVector<V>::value;
};
template <typename L, typename R>
struct IsDenseVectorSum<VectorClosure<OpAdd, L, R> >
{
static const bool value = IsDenseVectorSum<L>::value
&& IsDenseVectorSum<R>::value;
};
template <typename SV, typename VX>
struct IsDenseVectorSum<VectorClosure<OpMult, SV, VX> >
{
static const bool value = IsScalarValue<SV>::value
&& IsDenseVectorSum<VX>::value;
};
//
// Use non-default evaluation for vector sums
//
template <typename Op, typename L, typename R>
struct DefaultEval<VectorClosure<Op, L, R> >
{
typedef VectorClosure<OpAdd, L, R> Closure;
static const bool value = !IsDenseVectorSum<Closure>::value;
};
//
// Entry point for the evaluation of vector sums.
//
template <typename VL, typename VR, typename VY>
typename RestrictTo<IsDenseVectorSum<VectorClosure<OpAdd, VL, VR> >::value,
void>::Type
copy(const VectorClosure<OpAdd, VL, VR> &x, DenseVector<VY> &y)
{
typedef typename DenseVector<VY>::IndexType IndexType;
typedef typename DenseVector<VY>::ElementType ElementType;
const IndexType nb = NB;
const IndexType n = y.length();
const IndexType n1 = (n/nb)*nb;
const ElementType One(1);
for (IndexType i=0; i<n1; i+=nb) {
copy(i, nb, One, x.left(), y);
add(i, nb, One, x.right(), y);
}
if (n1<n) {
copy(n1, n-n1, One, x.left(), y);
add(n1, n-n1, One, x.right(), y);
}
}
} } // namespace blas, flens
#endif
//------------------------------------------------------------------------------
namespace flens {
template <typename IndexType,
typename ALPHA1, typename VX1,
typename ALPHA2, typename VX2,
typename ALPHA3, typename VX3,
typename VY>
void
sum(IndexType n,
const ALPHA1 alpha1, const VX1 *x1, IndexType incX1,
const ALPHA2 alpha2, const VX2 *x2, IndexType incX2,
const ALPHA3 alpha3, const VX3 *x3, IndexType incX3,
VY *y, IndexType incY)
{
for (IndexType i=0; i<n; ++i, x1+=incX1, x2+=incX2, x3+=incX3, y+=incY) {
*y = alpha1 * (*x1) + alpha2 * (*x2) + alpha3 * (*x3);
}
}
template <typename ALPHA1, typename VX1,
typename ALPHA2, typename VX2,
typename ALPHA3, typename VX3,
typename VY>
void
sum(const ALPHA1 alpha1, const DenseVector<VX1> &x1,
const ALPHA2 alpha2, const DenseVector<VX2> &x2,
const ALPHA3 alpha3, const DenseVector<VX3> &x3,
DenseVector<VY> &y)
{
sum(y.length(),
alpha1, x1.data(), x1.stride(),
alpha2, x2.data(), x2.stride(),
alpha3, x3.data(), x3.stride(),
y.data(), y.stride());
}
} // namespace flens
//------------------------------------------------------------------------------
#include <cxxstd/iostream.h>
#include <flens/flens.cxx>
using namespace flens;
using namespace std;
int
main()
{
const int n = 150;
DenseVector<Array<double> > x1(n), x2(n), x3(n), y(n);
x1 = 1;
x2 = 2;
x3 = 3;
for (int count=1; count<=500000; ++count) {
sum(2.0, x1, 4.0, x2, 3.0, x3, y);
sum(2.0, x1, 4.0, x2, 3.0, x3, y);
sum(2.0, x1, 4.0, x2, 3.0, x3, y);
sum(2.0, x1, 4.0, x2, 3.0, x3, y);
/*
y = 2.0*x1 + 4.0*x2 + 3.0*x3;
y = 2.0*x1 + 4.0*x2 + 3.0*x3;
y = 2.0*x1 + 4.0*x2 + 3.0*x3;
y = 2.0*x1 + 4.0*x2 + 3.0*x3;
*/
}
return y(2);
}
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