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device_copy.cc
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// Copyright (c) 2017-2023, University of Tennessee. All rights reserved.
// SPDX-License-Identifier: BSD-3-Clause
// This program is free software: you can redistribute it and/or modify it under
// the terms of the BSD 3-Clause license. See the accompanying LICENSE file.
#include "blas/device_blas.hh"
#include "blas/counter.hh"
#include "device_internal.hh"
#include <limits>
#include <string.h>
namespace blas {
//==============================================================================
namespace impl {
//------------------------------------------------------------------------------
/// Mid-level templated wrapper checks and converts arguments,
/// then calls low-level wrapper.
/// @ingroup copy_internal
///
template <typename scalar_t>
void copy(
int64_t n,
scalar_t const* x, int64_t incx,
scalar_t* y, int64_t incy,
blas::Queue& queue )
{
#ifndef BLAS_HAVE_DEVICE
throw blas::Error( "device BLAS not available", __func__ );
#else
// check arguments
blas_error_if( n < 0 ); // standard BLAS returns, doesn't fail
blas_error_if( incx == 0 ); // standard BLAS doesn't detect inc[xy] == 0
blas_error_if( incy == 0 );
#ifdef BLAS_HAVE_PAPI
// PAPI instrumentation
counter::dev_copy_type element;
memset( &element, 0, sizeof( element ) );
element = { n };
counter::insert( element, counter::Id::dev_copy );
double gflops = 1e9 * blas::Gflop< scalar_t >::copy( n );
counter::inc_flop_count( (long long int)gflops );
#endif
// convert arguments
device_blas_int n_ = to_device_blas_int( n );
device_blas_int incx_ = to_device_blas_int( incx );
device_blas_int incy_ = to_device_blas_int( incy );
blas::internal_set_device( queue.device() );
// call low-level wrapper
internal::copy( n_, x, incx_, y, incy_, queue );
#endif
}
} // namespace impl
//==============================================================================
// High-level overloaded wrappers call mid-level templated wrapper.
//------------------------------------------------------------------------------
/// GPU device, float version.
/// @ingroup copy
void copy(
int64_t n,
float const* x, int64_t incx,
float* y, int64_t incy,
blas::Queue& queue )
{
impl::copy( n, x, incx, y, incy, queue );
}
//------------------------------------------------------------------------------
/// GPU device, double version.
/// @ingroup copy
void copy(
int64_t n,
double const* x, int64_t incx,
double* y, int64_t incy,
blas::Queue& queue )
{
impl::copy( n, x, incx, y, incy, queue );
}
//------------------------------------------------------------------------------
/// GPU device, complex<float> version.
/// @ingroup copy
void copy(
int64_t n,
std::complex<float> const* x, int64_t incx,
std::complex<float>* y, int64_t incy,
blas::Queue& queue )
{
impl::copy( n, x, incx, y, incy, queue );
}
//------------------------------------------------------------------------------
/// GPU device, complex<double> version.
/// @ingroup copy
void copy(
int64_t n,
std::complex<double> const* x, int64_t incx,
std::complex<double>* y, int64_t incy,
blas::Queue& queue )
{
impl::copy( n, x, incx, y, incy, queue );
}
} // namespace blas