src/BenchKernelD3Q19List.c

   1 // --------------------------------------------------------------------------
   2 //
   3 // Copyright
   4 //   Markus Wittmann, 2016-2017
   5 //   RRZE, University of Erlangen-Nuremberg, Germany
   6 //   markus.wittmann -at- fau.de or hpc -at- rrze.fau.de
   7 //
   8 //   Viktor Haag, 2016
   9 //   LSS, University of Erlangen-Nuremberg, Germany
  10 //
  11 //  This file is part of the Lattice Boltzmann Benchmark Kernels (LbmBenchKernels).
  12 //
  13 //  LbmBenchKernels is free software: you can redistribute it and/or modify
  14 //  it under the terms of the GNU General Public License as published by
  15 //  the Free Software Foundation, either version 3 of the License, or
  16 //  (at your option) any later version.
  17 //
  18 //  LbmBenchKernels is distributed in the hope that it will be useful,
  19 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21 //  GNU General Public License for more details.
  22 //
  23 //  You should have received a copy of the GNU General Public License
  24 //  along with LbmBenchKernels.  If not, see <http://www.gnu.org/licenses/>.
  25 //
  26 // --------------------------------------------------------------------------
  27 #include "BenchKernelD3Q19ListCommon.h"
  28
  29 #include "Memory.h"
  30 #include "Vtk.h"
  31 #include "LikwidIf.h"
  32
  33 #include <inttypes.h>
  34 #include <math.h>
  35
  36
  37 void FNAME(D3Q19ListKernel)(LatticeDesc * ld, KernelData * kernelData, CaseData * cd)
  38 {
  39         Assert(ld != NULL);
  40         Assert(kernelData != NULL);
  41         Assert(cd != NULL);
  42
  43         Assert(cd->Omega > F(0.0));
  44         Assert(cd->Omega < F(2.0));
  45
  46         KernelData * kd = (KernelData *)kernelData;
  47         KernelDataList * kdl = (KernelDataList *)kernelData;
  48
  49         PdfT omega = cd->Omega;
  50         PdfT omegaEven = omega;
  51         PdfT magicParam = F(1.0) / F(12.0);
  52         PdfT omegaOdd   = F(1.0) /(F(0.5) + magicParam / (F(1.0) / omega - F(0.5)));
  53
  54         PdfT evenPart = F(0.0);
  55         PdfT oddPart  = F(0.0);
  56         PdfT dir_indep_trm = F(0.0);
  57
  58         PdfT w_0 = F(1.0) / F( 3.0);
  59         PdfT w_1 = F(1.0) / F(18.0);
  60         PdfT w_2 = F(1.0) / F(36.0);
  61
  62         PdfT w_1_x3 = w_1 * F(3.0);     PdfT w_1_nine_half = w_1 * F(9.0) / F(2.0);     PdfT w_1_indep = F(0.0);
  63         PdfT w_2_x3 = w_2 * F(3.0);     PdfT w_2_nine_half = w_2 * F(9.0) / F(2.0);     PdfT w_2_indep = F(0.0);
  64
  65         PdfT ux, uy, uz, ui;
  66         PdfT dens;
  67
  68         // Declare pdf_N, pdf_E, pdf_S, pdf_W, ...
  69         #define X(name, idx, idxinv, x, y, z)   PdfT JOIN(pdf_,name);
  70         D3Q19_LIST
  71         #undef X
  72
  73         PdfT * src = kd->Pdfs[0];
  74         PdfT * dst = kd->Pdfs[1];
  75         PdfT * tmp;
  76
  77         int maxIterations = cd->MaxIterations;
  78         int nFluid = kdl->nFluid;
  79         int nCells = kdl->nCells;
  80
  81         uint32_t adjListIndex;
  82         uint32_t * adjList = kdl->AdjList;
  83
  84         #ifdef VTK_OUTPUT
  85                 if (cd->VtkOutput) {
  86                         kd->PdfsActive = src;
  87                         VtkWrite(ld, kd, cd, 0);
  88                 }
  89         #endif
  90
  91         #ifdef STATISTICS
  92                 kd->PdfsActive = src;
  93                 KernelStatistics(kd, ld, cd, 0);
  94         #endif
  95
  96         // TODO: outer openmp parallel
  97         for(int iter = 0; iter < maxIterations; ++iter) {
  98
  99
 100         X_LIKWID_START("list-os");
 101
 102         #ifdef _OPENMP
 103                 #pragma omp parallel for default(none) \
 104                                 shared(nFluid, nCells, kd, kdl, adjList, src, dst, w_0, w_1, w_2, omegaEven, omegaOdd, \
 105                                 w_1_x3, w_2_x3, w_1_nine_half, w_2_nine_half, cd) \
 106                                 private(ux, uy, uz, ui, dens, dir_indep_trm, adjListIndex, \
 107                                         pdf_C, \
 108                                         pdf_N, pdf_E, pdf_S, pdf_W, \
 109                                         pdf_NE, pdf_SE, pdf_SW, pdf_NW, \
 110                                         pdf_T, pdf_TN, pdf_TE, pdf_TS, pdf_TW, \
 111                                         pdf_B, pdf_BN, pdf_BE, pdf_BS, pdf_BW, \
 112                                         evenPart, oddPart, w_1_indep, w_2_indep)
 113         #endif
 114         #ifdef INTEL_OPT_DIRECTIVES
 115                 #pragma ivdep
 116         #endif
 117         for (int index = 0; index < nFluid; ++index) {
 118
 119                         #define I(index, dir)   P_INDEX_3((nCells), (index), (dir))
 120
 121 #ifdef PROP_MODEL_PUSH
 122
 123                         // Load PDFs of local cell: pdf_N = src[I(x, y, z, D3Q19_N)]; ...
 124                         #define X(name, idx, idxinv, _x, _y, _z)        JOIN(pdf_,name) = src[I(index, idx)];
 125                         D3Q19_LIST
 126                         #undef X
 127
 128 #elif PROP_MODEL_PULL
 129
 130                         adjListIndex = index * N_D3Q19_IDX;
 131
 132                         pdf_C = src[P_INDEX_3(nCells, index, D3Q19_C)];
 133
 134                         // Load PDFs of local cell: pdf_N = src[adjList[adjListIndex + D3Q19_N]]; ...
 135                         #define X(name, idx, idxinv, _x, _y, _z)        JOIN(pdf_,name) = src[adjList[adjListIndex + idx]];
 136                         D3Q19_LIST_WO_C
 137                         #undef X
 138
 139 #else
 140         #error No implementation for PROP_MODEL_NAME.
 141 #endif
 142
 143 // #define LID_DRIVEN_CAVITY
 144
 145 #ifdef LID_DRIVEN_CAVITY
 146                         int nX = kd->Dims[0];
 147                         int nY = kd->Dims[1];
 148                         int nZ = kd->Dims[2];
 149
 150                         int x = kdl->Coords[C_INDEX_X(index)];
 151                         int y = kdl->Coords[C_INDEX_Y(index)];
 152                         int z = kdl->Coords[C_INDEX_Z(index)];
 153
 154                         if (z == nZ - 4 && x > 3 && x < (nX - 4) && y > 3 && y < (nY - 4)) {
 155                                 ux = 0.1 * 0.577;
 156                                 uy = 0.0;
 157                                 uz = 0.0;
 158                         } else {
 159 #endif
 160                                 ux = pdf_E + pdf_NE + pdf_SE + pdf_TE + pdf_BE -
 161                                          pdf_W - pdf_NW - pdf_SW - pdf_TW - pdf_BW;
 162                                 uy = pdf_N + pdf_NE + pdf_NW + pdf_TN + pdf_BN -
 163                                          pdf_S - pdf_SE - pdf_SW - pdf_TS - pdf_BS;
 164                                 uz = pdf_T + pdf_TE + pdf_TW + pdf_TN + pdf_TS -
 165                                          pdf_B - pdf_BE - pdf_BW - pdf_BN - pdf_BS;
 166 #ifdef LID_DRIVEN_CAVITY
 167                         }
 168 #endif
 169
 170                         dens = pdf_C +
 171                                    pdf_N  + pdf_E  + pdf_S  + pdf_W  +
 172                                    pdf_NE + pdf_SE + pdf_SW + pdf_NW +
 173                                    pdf_T  + pdf_TN + pdf_TE + pdf_TS + pdf_TW +
 174                                    pdf_B  + pdf_BN + pdf_BE + pdf_BS + pdf_BW;
 175
 176                         dir_indep_trm = dens - (ux * ux + uy * uy + uz * uz) * F(3.0) / F(2.0);
 177
 178 #ifdef PROP_MODEL_PUSH
 179
 180                         adjListIndex = index * N_D3Q19_IDX;
 181
 182                         // direction: w_0
 183                         dst[I(index, D3Q19_C)             ]  = pdf_C - omegaEven*(pdf_C - w_0*dir_indep_trm);
 184
 185                         // direction: w_1
 186                         w_1_indep = w_1*dir_indep_trm;
 187
 188                         ui = uy;
 189                         evenPart = omegaEven*( F(0.5)*(pdf_N + pdf_S) - ui*ui*w_1_nine_half - w_1_indep );
 190                         oddPart = omegaOdd*(F(0.5)*(pdf_N - pdf_S) - ui*w_1_x3 );
 191                         dst[adjList[adjListIndex + D3Q19_N]]  = pdf_N - evenPart - oddPart;
 192                         dst[adjList[adjListIndex + D3Q19_S]]  = pdf_S - evenPart + oddPart;
 193
 194                         ui = ux;
 195                         evenPart = omegaEven*( F(0.5)*(pdf_E + pdf_W) - ui*ui*w_1_nine_half - w_1_indep );
 196                         oddPart = omegaOdd*(F(0.5)*(pdf_E - pdf_W) - ui*w_1_x3 );
 197                         dst[adjList[adjListIndex + D3Q19_E]]  = pdf_E - evenPart - oddPart;
 198                         dst[adjList[adjListIndex + D3Q19_W]]  = pdf_W - evenPart + oddPart;
 199
 200                         ui = uz;
 201                         evenPart = omegaEven*( F(0.5)*(pdf_T + pdf_B) - ui*ui*w_1_nine_half - w_1_indep );
 202                         oddPart = omegaOdd*(F(0.5)*(pdf_T - pdf_B) - ui*w_1_x3 );
 203                         dst[adjList[adjListIndex + D3Q19_T]]  = pdf_T - evenPart - oddPart;
 204                         dst[adjList[adjListIndex + D3Q19_B]]  = pdf_B - evenPart + oddPart;
 205
 206                         // direction: w_2
 207                         w_2_indep = w_2*dir_indep_trm;
 208
 209                         ui = -ux + uy;
 210                         evenPart = omegaEven*( F(0.5)*(pdf_NW + pdf_SE) - ui*ui*w_2_nine_half - w_2_indep );
 211                         oddPart = omegaOdd*(F(0.5)*(pdf_NW - pdf_SE) - ui*w_2_x3 );
 212                         dst[adjList[adjListIndex + D3Q19_NW]] = pdf_NW - evenPart - oddPart;
 213                         dst[adjList[adjListIndex + D3Q19_SE]] = pdf_SE - evenPart + oddPart;
 214
 215                         ui = ux + uy;
 216                         evenPart = omegaEven*( F(0.5)*(pdf_NE + pdf_SW) - ui*ui*w_2_nine_half - w_2_indep );
 217                         oddPart = omegaOdd*(F(0.5)*(pdf_NE - pdf_SW) - ui*w_2_x3 );
 218                         dst[adjList[adjListIndex + D3Q19_NE]] = pdf_NE - evenPart - oddPart;
 219                         dst[adjList[adjListIndex + D3Q19_SW]] = pdf_SW - evenPart + oddPart;
 220
 221                         ui = -ux + uz;
 222                         evenPart = omegaEven*( F(0.5)*(pdf_TW + pdf_BE) - ui*ui*w_2_nine_half - w_2_indep );
 223                         oddPart = omegaOdd*(F(0.5)*(pdf_TW - pdf_BE) - ui*w_2_x3 );
 224                         dst[adjList[adjListIndex + D3Q19_TW]] = pdf_TW - evenPart - oddPart;
 225                         dst[adjList[adjListIndex + D3Q19_BE]] = pdf_BE - evenPart + oddPart;
 226
 227                         ui = ux + uz;
 228                         evenPart = omegaEven*( F(0.5)*(pdf_TE + pdf_BW) - ui*ui*w_2_nine_half - w_2_indep );
 229                         oddPart = omegaOdd*(F(0.5)*(pdf_TE - pdf_BW) - ui*w_2_x3 );
 230                         dst[adjList[adjListIndex + D3Q19_TE]] = pdf_TE - evenPart - oddPart;
 231                         dst[adjList[adjListIndex + D3Q19_BW]] = pdf_BW - evenPart + oddPart;
 232
 233                         ui = -uy + uz;
 234                         evenPart = omegaEven*( F(0.5)*(pdf_TS + pdf_BN) - ui*ui*w_2_nine_half - w_2_indep );
 235                         oddPart = omegaOdd*(F(0.5)*(pdf_TS - pdf_BN) - ui*w_2_x3 );
 236                         dst[adjList[adjListIndex + D3Q19_TS]] = pdf_TS - evenPart - oddPart;
 237                         dst[adjList[adjListIndex + D3Q19_BN]] = pdf_BN - evenPart + oddPart;
 238
 239                         ui = uy + uz;
 240                         evenPart = omegaEven*( F(0.5)*(pdf_TN + pdf_BS) - ui*ui*w_2_nine_half - w_2_indep );
 241                         oddPart = omegaOdd*(F(0.5)*(pdf_TN - pdf_BS) - ui*w_2_x3 );
 242                         dst[adjList[adjListIndex + D3Q19_TN]] = pdf_TN - evenPart - oddPart;
 243                         dst[adjList[adjListIndex + D3Q19_BS]] = pdf_BS - evenPart + oddPart;
 244
 245 #elif PROP_MODEL_PULL
 246
 247                         // direction: w_0
 248                         dst[I(index, D3Q19_C )]  = pdf_C - omegaEven*(pdf_C - w_0*dir_indep_trm);
 249
 250                         // direction: w_1
 251                         w_1_indep = w_1*dir_indep_trm;
 252
 253                         ui = uy;
 254                         evenPart = omegaEven*( F(0.5)*(pdf_N + pdf_S) - ui*ui*w_1_nine_half - w_1_indep );
 255                         oddPart = omegaOdd*(F(0.5)*(pdf_N - pdf_S) - ui*w_1_x3 );
 256                         dst[I(index, D3Q19_N )]  = pdf_N - evenPart - oddPart;
 257                         dst[I(index, D3Q19_S )]  = pdf_S - evenPart + oddPart;
 258
 259                         ui = ux;
 260                         evenPart = omegaEven*( F(0.5)*(pdf_E + pdf_W) - ui*ui*w_1_nine_half - w_1_indep );
 261                         oddPart = omegaOdd*(F(0.5)*(pdf_E - pdf_W) - ui*w_1_x3 );
 262                         dst[I(index, D3Q19_E )]  = pdf_E - evenPart - oddPart;
 263                         dst[I(index, D3Q19_W )]  = pdf_W - evenPart + oddPart;
 264
 265                         ui = uz;
 266                         evenPart = omegaEven*( F(0.5)*(pdf_T + pdf_B) - ui*ui*w_1_nine_half - w_1_indep );
 267                         oddPart = omegaOdd*(F(0.5)*(pdf_T - pdf_B) - ui*w_1_x3 );
 268                         dst[I(index, D3Q19_T )]  = pdf_T - evenPart - oddPart;
 269                         dst[I(index, D3Q19_B )]  = pdf_B - evenPart + oddPart;
 270
 271                         // direction: w_2
 272                         w_2_indep = w_2*dir_indep_trm;
 273
 274                         ui = -ux + uy;
 275                         evenPart = omegaEven*( F(0.5)*(pdf_NW + pdf_SE) - ui*ui*w_2_nine_half - w_2_indep );
 276                         oddPart = omegaOdd*(F(0.5)*(pdf_NW - pdf_SE) - ui*w_2_x3 );
 277                         dst[I(index, D3Q19_NW)] = pdf_NW - evenPart - oddPart;
 278                         dst[I(index, D3Q19_SE)] = pdf_SE - evenPart + oddPart;
 279
 280                         ui = ux + uy;
 281                         evenPart = omegaEven*( F(0.5)*(pdf_NE + pdf_SW) - ui*ui*w_2_nine_half - w_2_indep );
 282                         oddPart = omegaOdd*(F(0.5)*(pdf_NE - pdf_SW) - ui*w_2_x3 );
 283                         dst[I(index, D3Q19_NE)] = pdf_NE - evenPart - oddPart;
 284                         dst[I(index, D3Q19_SW)] = pdf_SW - evenPart + oddPart;
 285
 286                         ui = -ux + uz;
 287                         evenPart = omegaEven*( F(0.5)*(pdf_TW + pdf_BE) - ui*ui*w_2_nine_half - w_2_indep );
 288                         oddPart = omegaOdd*(F(0.5)*(pdf_TW - pdf_BE) - ui*w_2_x3 );
 289                         dst[I(index, D3Q19_TW)] = pdf_TW - evenPart - oddPart;
 290                         dst[I(index, D3Q19_BE)] = pdf_BE - evenPart + oddPart;
 291
 292                         ui = ux + uz;
 293                         evenPart = omegaEven*( F(0.5)*(pdf_TE + pdf_BW) - ui*ui*w_2_nine_half - w_2_indep );
 294                         oddPart = omegaOdd*(F(0.5)*(pdf_TE - pdf_BW) - ui*w_2_x3 );
 295                         dst[I(index, D3Q19_TE)] = pdf_TE - evenPart - oddPart;
 296                         dst[I(index, D3Q19_BW)] = pdf_BW - evenPart + oddPart;
 297
 298                         ui = -uy + uz;
 299                         evenPart = omegaEven*( F(0.5)*(pdf_TS + pdf_BN) - ui*ui*w_2_nine_half - w_2_indep );
 300                         oddPart = omegaOdd*(F(0.5)*(pdf_TS - pdf_BN) - ui*w_2_x3 );
 301                         dst[I(index, D3Q19_TS)] = pdf_TS - evenPart - oddPart;
 302                         dst[I(index, D3Q19_BN)] = pdf_BN - evenPart + oddPart;
 303
 304                         ui = uy + uz;
 305                         evenPart = omegaEven*( F(0.5)*(pdf_TN + pdf_BS) - ui*ui*w_2_nine_half - w_2_indep );
 306                         oddPart = omegaOdd*(F(0.5)*(pdf_TN - pdf_BS) - ui*w_2_x3 );
 307                         dst[I(index, D3Q19_TN)] = pdf_TN - evenPart - oddPart;
 308                         dst[I(index, D3Q19_BS)] = pdf_BS - evenPart + oddPart;
 309
 310 #endif
 311                         #undef I
 312                 } // loop over fluid nodes
 313
 314                 X_LIKWID_STOP("list-os");
 315
 316                 #ifdef VERIFICATION
 317                         kd->PdfsActive = dst;
 318                         KernelAddBodyForce(kd, ld, cd);
 319                 #endif
 320
 321                 #ifdef VTK_OUTPUT
 322                         if (cd->VtkOutput && (iter % cd->VtkModulus) == 0) {
 323                                 kd->PdfsActive = dst;
 324                                 VtkWrite(ld, kd, cd, iter);
 325                         }
 326                 #endif
 327
 328                 #ifdef STATISTICS
 329                         kd->PdfsActive = dst;
 330                         KernelStatistics(kd, ld, cd, iter);
 331                 #endif
 332
 333                 // swap grids
 334                 tmp = src;
 335                 src = dst;
 336                 dst = tmp;
 337
 338         } // for (int iter = 0; ...
 339
 340 #ifdef VTK_OUTPUT
 341         if (cd->VtkOutput) {
 342                 kd->PdfsActive = src;
 343                 VtkWrite(ld, kd, cd, maxIterations);
 344         }
 345 #endif
 346
 347 #ifdef STATISTICS
 348         kd->PdfsActive = src;
 349         KernelStatistics(kd, ld, cd, maxIterations);
 350 #endif
 351
 352         return;
 353 }