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PdV_kernel_cuda.cu
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PdV_kernel_cuda.cu
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/*Crown Copyright 2012 AWE.
*
* This file is part of CloverLeaf.
*
* CloverLeaf is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at your option)
* any later version.
*
* CloverLeaf is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* CloverLeaf. If not, see http://www.gnu.org/licenses/.
*/
/*
* @brief CUDA PdV kernel.
* @author Michael Boulton NVIDIA Corporation
* @details Calculates the change in energy and density in a cell using the
* change on cell volume due to the velocity gradients in a cell. The time
* level of the velocity data depends on whether it is invoked as the
* predictor or corrector.
*/
#include "cuda_common.hpp"
#include "kernel_files/PdV_kernel.cuknl"
#include "host_reductions_kernel_cuda.hpp"
extern "C" void pdv_kernel_cuda_
(int *error_condition, int *prdct, double *dtbyt)
{
cuda_chunk.PdV_kernel(error_condition, *prdct, *dtbyt);
}
void CloverleafCudaChunk::PdV_kernel
(int* error_condition, int predict, double dt)
{
if (predict)
{
CUDALAUNCH(device_PdV_cuda_kernel_predict, dt, pdv_reduce_array,
xarea, yarea, volume, density0, density1,
energy0, energy1, pressure, viscosity,
xvel0, yvel0, xvel1, yvel1);
}
else
{
CUDALAUNCH(device_PdV_cuda_kernel_not_predict, dt, pdv_reduce_array,
xarea, yarea, volume, density0, density1,
energy0, energy1, pressure, viscosity,
xvel0, yvel0, xvel1, yvel1);
}
ReduceToHost<int>::max_element(pdv_reduce_array, error_condition, num_blocks);
if (1 == *error_condition)
{
std::cerr << "Negative volume in PdV kernel" << std::endl;
}
else if (2 == *error_condition)
{
std::cerr << "Negative cell volume in PdV kernel" << std::endl;
}
}