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prometeo_chem.cu
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// Copyright (c) "2019, by Stanford University
// Developer: Mario Di Renzo
// Affiliation: Center for Turbulence Research, Stanford University
// URL: https://ctr.stanford.edu
// Citation: Di Renzo, M., Lin, F., and Urzay, J. (2020).
// HTR solver: An open-source exascale-oriented task-based
// multi-GPU high-order code for hypersonic aerothermodynamics.
// Computer Physics Communications 255, 107262"
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "prometeo_chem.hpp"
#include "cuda_utils.hpp"
// Declare a constant memory that will hold the Mixture struct (initialized in prometeo_mixture.cu)
extern __device__ __constant__ Mix mix;
//-----------------------------------------------------------------------------
// KERNELS FOR UpdateChemistryTask
//-----------------------------------------------------------------------------
__global__
void UpdateChemistry_kernel(const AccessorRO<VecNEq, 3> Conserved_t,
const AccessorRW<VecNEq, 3> Conserved,
const AccessorRW<VecNEq, 3> Conserved_t_old,
const AccessorRW<double, 3> temperature,
const double Integrator_deltaTime,
const Rect<3> my_bounds,
const coord_t size_x,
const coord_t size_y,
const coord_t size_z)
{
int x = blockIdx.x * blockDim.x + threadIdx.x;
int y = blockIdx.y * blockDim.y + threadIdx.y;
int z = blockIdx.z * blockDim.z + threadIdx.z;
if ((x < size_x) && (y < size_y) && (z < size_z)) {
const Point<3> p = Point<3>(x + my_bounds.lo.x,
y + my_bounds.lo.y,
z + my_bounds.lo.z);
Conserved_t_old[p] = Conserved_t[p];
ImplicitSolver s = ImplicitSolver(Conserved_t_old[p], temperature[p], mix);
s.solve(Conserved[p], Integrator_deltaTime, Integrator_deltaTime);
}
}
__host__
void UpdateChemistryTask::gpu_base_impl(
const Args &args,
const std::vector<PhysicalRegion> ®ions,
const std::vector<Future> &futures,
Context ctx, Runtime *runtime)
{
assert(regions.size() == 2);
assert(futures.size() == 1);
// Accessors for RHS
const AccessorRO<VecNEq, 3> acc_Conserved_t (regions[0], FID_Conserved_t);
// Accessors for implicit variables
const AccessorRW<VecNEq, 3> acc_Conserved (regions[1], FID_Conserved);
const AccessorRW<VecNEq, 3> acc_Conserved_t_old (regions[1], FID_Conserved_t_old);
const AccessorRW<double, 3> acc_temperature (regions[1], FID_temperature);
// Extract execution domains
Rect<3> r_MyFluid = runtime->get_index_space_domain(ctx, regions[1].get_logical_region().get_index_space());
// Wait for the Integrator_deltaTime
const double Integrator_deltaTime = futures[0].get_result<double>();
// Launch the kernel
const int threads_per_block = 256;
const dim3 TPB_3d = splitThreadsPerBlock<Xdir>(threads_per_block, r_MyFluid);
const dim3 num_blocks_3d = dim3((getSize<Xdir>(r_MyFluid) + (TPB_3d.x - 1)) / TPB_3d.x,
(getSize<Ydir>(r_MyFluid) + (TPB_3d.y - 1)) / TPB_3d.y,
(getSize<Zdir>(r_MyFluid) + (TPB_3d.z - 1)) / TPB_3d.z);
UpdateChemistry_kernel<<<num_blocks_3d, TPB_3d>>>(
acc_Conserved_t, acc_Conserved, acc_Conserved_t_old, acc_temperature, Integrator_deltaTime,
r_MyFluid, getSize<Xdir>(r_MyFluid), getSize<Ydir>(r_MyFluid), getSize<Zdir>(r_MyFluid));
}
//-----------------------------------------------------------------------------
// KERNELS FOR AddChemistrySourcesTask
//-----------------------------------------------------------------------------
__global__
void AddChemistrySources_kernel(const AccessorRO<double, 3> rho,
const AccessorRO<double, 3> pressure,
const AccessorRO<double, 3> temperature,
const AccessorRO<VecNSp, 3> MassFracs,
const AccessorRW<VecNEq, 3> Conserved_t,
const Rect<3> my_bounds,
const coord_t size_x,
const coord_t size_y,
const coord_t size_z)
{
int x = blockIdx.x * blockDim.x + threadIdx.x;
int y = blockIdx.y * blockDim.y + threadIdx.y;
int z = blockIdx.z * blockDim.z + threadIdx.z;
if ((x < size_x) && (y < size_y) && (z < size_z)) {
const Point<3> p = Point<3>(x + my_bounds.lo.x,
y + my_bounds.lo.y,
z + my_bounds.lo.z);
VecNSp w; mix.GetProductionRates(w, rho[p], pressure[p], temperature[p], MassFracs[p]);
__UNROLL__
for (int i = 0; i<nSpec; i++)
Conserved_t[p][i] += w[i];
}
}
__host__
void AddChemistrySourcesTask::gpu_base_impl(
const Args &args,
const std::vector<PhysicalRegion> ®ions,
const std::vector<Future> &futures,
Context ctx, Runtime *runtime)
{
assert(regions.size() == 2);
assert(futures.size() == 0);
// Accessors for primitive variables and properites
const AccessorRO<double, 3> acc_rho (regions[0], FID_rho);
const AccessorRO<double, 3> acc_pressure (regions[0], FID_pressure);
const AccessorRO<double, 3> acc_temperature (regions[0], FID_temperature);
const AccessorRO<VecNSp, 3> acc_MassFracs (regions[0], FID_MassFracs);
// Accessors for RHS
const AccessorRW<VecNEq, 3> acc_Conserved_t (regions[1], FID_Conserved_t);
// Extract execution domains
Rect<3> r_MyFluid = runtime->get_index_space_domain(ctx, regions[1].get_logical_region().get_index_space());
// Launch the kernel
const int threads_per_block = 256;
const dim3 TPB_3d = splitThreadsPerBlock<Xdir>(threads_per_block, r_MyFluid);
const dim3 num_blocks_3d = dim3((getSize<Xdir>(r_MyFluid) + (TPB_3d.x - 1)) / TPB_3d.x,
(getSize<Ydir>(r_MyFluid) + (TPB_3d.y - 1)) / TPB_3d.y,
(getSize<Zdir>(r_MyFluid) + (TPB_3d.z - 1)) / TPB_3d.z);
AddChemistrySources_kernel<<<num_blocks_3d, TPB_3d>>>(
acc_rho, acc_pressure, acc_temperature, acc_MassFracs, acc_Conserved_t,
r_MyFluid, getSize<Xdir>(r_MyFluid), getSize<Ydir>(r_MyFluid), getSize<Zdir>(r_MyFluid));
}