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prometeo_electricField.cu
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// Copyright (c) "2020, by Centre Européen de Recherche et de Formation Avancée en Calcul Scientifiq
// Developer: Mario Di Renzo
// Affiliation: Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique
// URL: https://cerfacs.fr
// 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_electricField.hpp"
#include "prometeo_electricField.inl"
#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 GetElectricFieldTask
//-----------------------------------------------------------------------------
__global__
void GetElectricField_kernel(const AccessorWO< Vec3, 3> eField,
const AccessorRO<double, 3> ePot,
const AccessorRO< int, 3> nType_x,
const AccessorRO< int, 3> nType_y,
const AccessorRO< int, 3> nType_z,
const AccessorRO<double, 3> dcsi_d,
const AccessorRO<double, 3> deta_d,
const AccessorRO<double, 3> dzet_d,
const Rect<3> my_bounds,
const Rect<3> Fluid_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);
eField[p] = -getGrad(ePot, p,
nType_x[p], nType_y[p], nType_z[p],
dcsi_d[p], deta_d[p], dzet_d[p],
Fluid_bounds);
}
}
__host__
void GetElectricFieldTask::gpu_base_impl(
const Args &args,
const std::vector<PhysicalRegion> ®ions,
const std::vector<Future> &futures,
Context ctx, Runtime *runtime)
{
assert(regions.size() == 3);
assert(futures.size() == 0);
// Accessors for variables in the Ghost regions
const AccessorRO<double, 3> acc_ePot (regions[0], FID_electricPotential);
// Accessors for metrics
const AccessorRO< int, 3> acc_nType_x (regions[1], FID_nType_x);
const AccessorRO< int, 3> acc_nType_y (regions[1], FID_nType_y);
const AccessorRO< int, 3> acc_nType_z (regions[1], FID_nType_z);
const AccessorRO<double, 3> acc_dcsi_d (regions[1], FID_dcsi_d);
const AccessorRO<double, 3> acc_deta_d (regions[1], FID_deta_d);
const AccessorRO<double, 3> acc_dzet_d (regions[1], FID_dzet_d);
// Accessors for gradients
const AccessorWO< Vec3, 3> acc_eField (regions[2], FID_electricField);
// Extract execution domains
Rect<3> r_MyFluid = runtime->get_index_space_domain(ctx, regions[1].get_logical_region().get_index_space());
Rect<3> Fluid_bounds = args.Fluid_bounds;
// 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);
GetElectricField_kernel<<<num_blocks_3d, TPB_3d>>>(
acc_eField, acc_ePot,
acc_nType_x, acc_nType_y, acc_nType_z,
acc_dcsi_d, acc_deta_d, acc_dzet_d,
r_MyFluid, Fluid_bounds,
getSize<Xdir>(r_MyFluid), getSize<Ydir>(r_MyFluid), getSize<Zdir>(r_MyFluid));
}
#if (nIons > 0)
//-----------------------------------------------------------------------------
// KERNELS FOR UpdateUsingIonDriftFluxTask
//-----------------------------------------------------------------------------
template<direction dir>
__global__
void UpdateRHSUsingIonDriftFlux_kernel(const AccessorRW<VecNEq, 3> Conserved_t,
const AccessorRO< int, 3> nType,
const AccessorRO<double, 3> m_e,
const AccessorRO<VecNEq, 3> rhoYi,
const AccessorRO<VecNSp, 3> Yi,
const AccessorRO<VecNIo, 3> Ki,
const AccessorRO< Vec3, 3> eField,
const Rect<3> Flux_bounds,
const Rect<3> Fluid_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 (isThreadInCrossPlane<dir>(size_x, size_y, size_z)) {
const coord_t size = getSize<dir>(Fluid_bounds);
const coord_t span_size = getSize<dir>(Flux_bounds);
const coord_t firstIndex = firstIndexInSpan<dir>(span_size);
if (firstIndex < span_size) {
const coord_t lastIndex = lastIndexInSpan<dir>(span_size);
UpdateUsingIonDriftFluxTask<dir>::updateRHSSpan(
Conserved_t, m_e, nType,
rhoYi, Yi, Ki, eField,
firstIndex, lastIndex,
x, y, z,
Flux_bounds, Fluid_bounds, mix);
}
}
}
template<direction dir>
__host__
void UpdateUsingIonDriftFluxTask<dir>::gpu_base_impl(
const Args &args,
const std::vector<PhysicalRegion> ®ions,
const std::vector<Future> &futures,
Context ctx, Runtime *runtime)
{
assert(regions.size() == 5);
assert(futures.size() == 0);
// Accessors for EulerGhost region
const AccessorRO<VecNEq, 3> acc_Conserved (regions[0], FID_Conserved);
const AccessorRO< Vec3, 3> acc_eField (regions[0], FID_electricField);
const AccessorRO<VecNIo, 3> acc_Ki (regions[0], FID_Ki);
// Accessors for DiffGhost region
const AccessorRO<VecNSp, 3> acc_MassFracs (regions[1], FID_MassFracs);
// Accessors for DivgGhost region
const AccessorRO< int, 3> acc_nType (regions[2], FID_nType);
// Accessors for metrics
const AccessorRO<double, 3> acc_m_e (regions[3], FID_m_e);
// Accessors for RHS
const AccessorRW<VecNEq, 3> acc_Conserved_t(regions[4], FID_Conserved_t);
// Extract execution domains
Rect<3> r_MyFluid = runtime->get_index_space_domain(ctx, regions[4].get_logical_region().get_index_space());
Rect<3> Fluid_bounds = args.Fluid_bounds;
// Launch the kernel to update the RHS using the diffusion fluxes
const int threads_per_block = 256;
const dim3 TPB_3d = splitThreadsPerBlockSpan<dir>(threads_per_block, r_MyFluid);
const dim3 num_blocks_3d = numBlocksSpan<dir>(TPB_3d, r_MyFluid);
UpdateRHSUsingIonDriftFlux_kernel<dir><<<num_blocks_3d, TPB_3d>>>(
acc_Conserved_t,
acc_nType, acc_m_e,
acc_Conserved, acc_MassFracs, acc_Ki, acc_eField,
r_MyFluid, Fluid_bounds,
getSize<Xdir>(r_MyFluid), getSize<Ydir>(r_MyFluid), getSize<Zdir>(r_MyFluid));
}
template void UpdateUsingIonDriftFluxTask<Xdir>::gpu_base_impl(
const Args &args,
const std::vector<PhysicalRegion> ®ions,
const std::vector<Future> &futures,
Context ctx, Runtime *runtime);
template void UpdateUsingIonDriftFluxTask<Ydir>::gpu_base_impl(
const Args &args,
const std::vector<PhysicalRegion> ®ions,
const std::vector<Future> &futures,
Context ctx, Runtime *runtime);
template void UpdateUsingIonDriftFluxTask<Zdir>::gpu_base_impl(
const Args &args,
const std::vector<PhysicalRegion> ®ions,
const std::vector<Future> &futures,
Context ctx, Runtime *runtime);
#endif
//-----------------------------------------------------------------------------
// KERNELS FOR AddIonWindSourcesTask
//-----------------------------------------------------------------------------
__global__
void AddIonWindSourcesTask_kernel(
const AccessorRW<VecNEq, 3> Conserved_t,
const AccessorRO<double, 3> rho,
const AccessorRO<VecNSp, 3> Di,
#if (nIons > 0)
const AccessorRO<VecNIo, 3> Ki,
#endif
const AccessorRO< Vec3, 3> velocity,
const AccessorRO< Vec3, 3> eField,
const AccessorRO<VecNSp, 3> MolarFracs,
const AccessorRO< int, 3> nType_x,
const AccessorRO< int, 3> nType_y,
const AccessorRO< int, 3> nType_z,
const AccessorRO<double, 3> m_x,
const AccessorRO<double, 3> m_y,
const AccessorRO<double, 3> m_z,
const Rect<3> my_bounds,
const Rect<3> Fluid_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);
AddIonWindSourcesTask::addIonWindSources(Conserved_t[p],
rho, Di,
#if (nIons > 0)
Ki,
#endif
velocity, eField, MolarFracs,
nType_x, nType_y, nType_z,
m_x, m_y, m_z,
p, Fluid_bounds, mix);
}
}
__host__
void AddIonWindSourcesTask::gpu_base_impl(
const Args &args,
const std::vector<PhysicalRegion> ®ions,
const std::vector<Future> &futures,
Context ctx, Runtime *runtime)
{
assert(regions.size() == 3);
assert(futures.size() == 0);
// Accessors for stencil variables
const AccessorRO<VecNSp, 3> acc_MolarFracs (regions[0], FID_MolarFracs);
// Accessors for node types and metrics
const AccessorRO< int, 3> acc_nType_x (regions[1], FID_nType_x);
const AccessorRO< int, 3> acc_nType_y (regions[1], FID_nType_y);
const AccessorRO< int, 3> acc_nType_z (regions[1], FID_nType_z);
const AccessorRO<double, 3> acc_dcsi (regions[1], FID_dcsi_d);
const AccessorRO<double, 3> acc_deta (regions[1], FID_deta_d);
const AccessorRO<double, 3> acc_dzet (regions[1], FID_dzet_d);
// Accessors for primitive variables
const AccessorRO< Vec3, 3> acc_velocity (regions[1], FID_velocity);
const AccessorRO< Vec3, 3> acc_eField (regions[1], FID_electricField);
// Accessors for properties
const AccessorRO<double, 3> acc_rho (regions[1], FID_rho);
const AccessorRO<VecNSp, 3> acc_Di (regions[1], FID_Di);
#if (nIons > 0)
const AccessorRO<VecNIo, 3> acc_Ki (regions[1], FID_Ki);
#endif
// Accessors for RHS
const AccessorRW<VecNEq, 3> acc_Conserved_t (regions[2], FID_Conserved_t);
// Extract execution domain
Rect<3> r_MyFluid = runtime->get_index_space_domain(ctx, regions[2].get_logical_region().get_index_space());
Rect<3> Fluid_bounds = args.Fluid_bounds;
// Launch the kernel to update the RHS using ion wind source terms
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);
AddIonWindSourcesTask_kernel<<<num_blocks_3d, TPB_3d>>>(
acc_Conserved_t,
acc_rho, acc_Di,
#if (nIons > 0)
acc_Ki,
#endif
acc_velocity, acc_eField, acc_MolarFracs,
acc_nType_x, acc_nType_y, acc_nType_z,
acc_dcsi, acc_deta, acc_dzet,
r_MyFluid, Fluid_bounds,
getSize<Xdir>(r_MyFluid), getSize<Ydir>(r_MyFluid), getSize<Zdir>(r_MyFluid));
}