projects / LbmBenchmarkKernelsPublic.git / blame
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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 "BenchKernelD3Q19Common.h" | |
| 28 | ||
| 29 | #include "Memory.h" | |
| 30 | #include "Vtk.h" | |
| e3f82424 | 31 | #include "LikwidIf.h" |
| 10988083 MW |
32 | |
| 33 | #include <inttypes.h> | |
| 34 | #include <math.h> | |
| 35 | ||
| 36 | #ifdef _OPENMP | |
| 37 | #include <omp.h> | |
| 38 | #endif | |
| 39 | ||
| 40 | void FNAME(D3Q19Kernel)(LatticeDesc * ld, KernelData * kernelData, CaseData * cd) | |
| 41 | { | |
| 42 | Assert(ld != NULL); | |
| 43 | Assert(kernelData != NULL); | |
| 44 | Assert(cd != NULL); | |
| 45 | ||
| 46 | Assert(cd->Omega > 0.0); | |
| 47 | Assert(cd->Omega < 2.0); | |
| 48 | ||
| 49 | KernelData * kd = (KernelData *)kernelData; | |
| 50 | ||
| 51 | ||
| 52 | int nX = ld->Dims[0]; | |
| 53 | int nY = ld->Dims[1]; | |
| 54 | int nZ = ld->Dims[2]; | |
| 55 | ||
| 56 | int * gDims = kd->GlobalDims; | |
| 57 | ||
| 58 | int oX = kd->Offsets[0]; | |
| 59 | int oY = kd->Offsets[1]; | |
| 60 | int oZ = kd->Offsets[2]; | |
| 61 | ||
| 62 | PdfT omega = cd->Omega; | |
| 63 | PdfT omegaEven = omega; | |
| 64 | // PdfT omegaOdd = 8.0*((2.0-omegaEven)/(8.0-omegaEven)); //"standard" trt odd relaxation parameter | |
| 65 | PdfT magicParam = 1.0/12.0; // 1/4: best stability; 1/12: removes third-order advection error (best advection); 1/6: removes fourth-order diffusion error (best diffusion); 3/16: exact location of bounce back for poiseuille flow | |
| 66 | PdfT omegaOdd = 1.0/( 0.5 + magicParam/(1.0/omega - 0.5) ); | |
| 67 | ||
| 68 | PdfT evenPart = 0.0; | |
| 69 | PdfT oddPart = 0.0; | |
| 70 | PdfT dir_indep_trm = 0.0; | |
| 71 | ||
| 72 | PdfT w_0 = 1.0 / 3.0; | |
| 73 | PdfT w_1 = 1.0 / 18.0; | |
| 74 | PdfT w_2 = 1.0 / 36.0; | |
| 75 | ||
| 76 | PdfT w_1_x3 = w_1 * 3.0; PdfT w_1_nine_half = w_1 * 9.0/2.0; PdfT w_1_indep = 0.0; | |
| 77 | PdfT w_2_x3 = w_2 * 3.0; PdfT w_2_nine_half = w_2 * 9.0/2.0; PdfT w_2_indep = 0.0; | |
| 78 | ||
| 79 | PdfT ux, uy, uz, ui; | |
| 80 | PdfT dens; | |
| 81 | ||
| 82 | // Declare pdf_N, pdf_E, pdf_S, pdf_W, ... | |
| 83 | #define X(name, idx, idxinv, x, y, z) PdfT JOIN(pdf_,name); | |
| 84 | D3Q19_LIST | |
| 85 | #undef X | |
| 86 | ||
| 87 | PdfT * src = kd->Pdfs[0]; | |
| 88 | PdfT * dst = kd->Pdfs[1]; | |
| 89 | PdfT * tmp; | |
| 90 | ||
| 91 | int maxIterations = cd->MaxIterations; | |
| 92 | ||
| 93 | #ifdef VTK_OUTPUT | |
| 94 | if (cd->VtkOutput) { | |
| 95 | kd->PdfsActive = src; | |
| 96 | VtkWrite(ld, kd, cd, 0); | |
| 97 | } | |
| 98 | #endif | |
| 99 | ||
| 100 | for (int iter = 0; iter < maxIterations; ++iter) { | |
| 101 | ||
| e3f82424 MW |
102 | X_LIKWID_START("os"); |
| 103 | ||
| 10988083 MW |
104 | #ifdef _OPENMP |
| 105 | #pragma omp parallel for collapse(3) default(none) \ | |
| 106 | shared(gDims,src, dst, w_0, w_1, w_2, omegaEven, omegaOdd, \ | |
| 107 | w_1_x3, w_2_x3, w_1_nine_half, w_2_nine_half, cd, \ | |
| 108 | oX, oY, oZ, nX, nY, nZ) \ | |
| 109 | private(ux, uy, uz, ui, dens, dir_indep_trm, \ | |
| 110 | pdf_C, \ | |
| 111 | pdf_N, pdf_E, pdf_S, pdf_W, \ | |
| 112 | pdf_NE, pdf_SE, pdf_SW, pdf_NW, \ | |
| 113 | pdf_T, pdf_TN, pdf_TE, pdf_TS, pdf_TW, \ | |
| 114 | pdf_B, pdf_BN, pdf_BE, pdf_BS, pdf_BW, \ | |
| 115 | evenPart, oddPart, w_1_indep, w_2_indep) | |
| 116 | #endif | |
| 117 | ||
| e3f82424 | 118 | for (int x = oX; x < nX + oX; ++x) { |
| 10988083 | 119 | for (int y = oY; y < nY + oY; ++y) { |
| e3f82424 | 120 | for (int z = oZ; z < nZ + oZ; ++z) { |
| 10988083 MW |
121 | #define I(x, y, z, dir) P_INDEX_5(gDims, (x), (y), (z), (dir)) |
| 122 | ||
| 123 | #ifdef PROP_MODEL_PUSH | |
| 124 | ||
| 125 | // Load PDFs of local cell: pdf_N = src[I(x, y, z, D3Q19_N)]; ... | |
| 126 | #define X(name, idx, idxinv, _x, _y, _z) JOIN(pdf_,name) = src[I(x, y, z, idx)]; | |
| 127 | //if (isnan(JOIN(pdf_,name))) { printf("iter: %d %d %d %d %d %s nan\n", iter, x-oX, y-oY, z-oZ, idx, D3Q19_NAMES[idx]); exit(1);} | |
| 128 | D3Q19_LIST | |
| 129 | #undef X | |
| 130 | ||
| 131 | #elif PROP_MODEL_PULL | |
| 132 | ||
| 133 | // Load PDFs of local cell: pdf_N = src[I(x, y, z, D3Q19_N)]; ... | |
| 134 | #define X(name, idx, idxinv, _x, _y, _z) JOIN(pdf_,name) = src[I(x - _x, y - _y, z - _z, idx)]; | |
| 135 | //if (isnan(JOIN(pdf_,name))) { printf("iter: %d %d %d %d %d %s nan\n", iter, x-oX, y-oY, z-oZ, idx, D3Q19_NAMES[idx]); exit(1);} | |
| 136 | D3Q19_LIST | |
| 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 | ||
| 147 | if (z == nZ - 4 + oZ && x > 3 + oX && x < (nX - 4 + oX) && y > 3 + oY && y < (nY - 4 + oY)) { | |
| 148 | ux = 0.1 * 0.577; | |
| 149 | uy = 0.0; | |
| 150 | uz = 0.0; | |
| 151 | ||
| 152 | } else { | |
| 153 | #endif | |
| 154 | ux = pdf_E + pdf_NE + pdf_SE + pdf_TE + pdf_BE - | |
| 155 | pdf_W - pdf_NW - pdf_SW - pdf_TW - pdf_BW; | |
| 156 | uy = pdf_N + pdf_NE + pdf_NW + pdf_TN + pdf_BN - | |
| 157 | pdf_S - pdf_SE - pdf_SW - pdf_TS - pdf_BS; | |
| 158 | uz = pdf_T + pdf_TE + pdf_TW + pdf_TN + pdf_TS - | |
| 159 | pdf_B - pdf_BE - pdf_BW - pdf_BN - pdf_BS; | |
| 160 | #ifdef LID_DRIVEN_CAVITY | |
| 161 | } | |
| 162 | ||
| 163 | #endif | |
| 164 | ||
| 165 | dens = pdf_C + | |
| 166 | pdf_N + pdf_E + pdf_S + pdf_W + | |
| 167 | pdf_NE + pdf_SE + pdf_SW + pdf_NW + | |
| 168 | pdf_T + pdf_TN + pdf_TE + pdf_TS + pdf_TW + | |
| 169 | pdf_B + pdf_BN + pdf_BE + pdf_BS + pdf_BW; | |
| 170 | ||
| 171 | dir_indep_trm = dens - (ux * ux + uy * uy + uz * uz)*3.0/2.0; | |
| 172 | ||
| 173 | #ifdef PROP_MODEL_PUSH | |
| 174 | ||
| 175 | // direction: w_0 | |
| 176 | dst[I(x, y, z, D3Q19_C)] = pdf_C - omegaEven*(pdf_C - w_0*dir_indep_trm); | |
| 177 | ||
| 178 | // direction: w_1 | |
| 179 | w_1_indep = w_1*dir_indep_trm; | |
| 180 | ||
| 181 | ui = uy; | |
| 182 | evenPart = omegaEven*( 0.5*(pdf_N + pdf_S) - ui*ui*w_1_nine_half - w_1_indep ); | |
| 183 | oddPart = omegaOdd*(0.5*(pdf_N - pdf_S) - ui*w_1_x3 ); | |
| 184 | dst[I(x, y + 1, z, D3Q19_N)] = pdf_N - evenPart - oddPart; | |
| 185 | dst[I(x, y - 1, z, D3Q19_S)] = pdf_S - evenPart + oddPart; | |
| 186 | ||
| 187 | ui = ux; | |
| 188 | evenPart = omegaEven*( 0.5*(pdf_E + pdf_W) - ui*ui*w_1_nine_half - w_1_indep ); | |
| 189 | oddPart = omegaOdd*(0.5*(pdf_E - pdf_W) - ui*w_1_x3 ); | |
| 190 | dst[I(x + 1, y, z, D3Q19_E)] = pdf_E - evenPart - oddPart; | |
| 191 | dst[I(x - 1, y, z, D3Q19_W)] = pdf_W - evenPart + oddPart; | |
| 192 | ||
| 193 | ui = uz; | |
| 194 | evenPart = omegaEven*( 0.5*(pdf_T + pdf_B) - ui*ui*w_1_nine_half - w_1_indep ); | |
| 195 | oddPart = omegaOdd*(0.5*(pdf_T - pdf_B) - ui*w_1_x3 ); | |
| 196 | dst[I(x, y, z + 1, D3Q19_T)] = pdf_T - evenPart - oddPart; | |
| 197 | dst[I(x, y, z - 1, D3Q19_B)] = pdf_B - evenPart + oddPart; | |
| 198 | ||
| 199 | // direction: w_2 | |
| 200 | w_2_indep = w_2*dir_indep_trm; | |
| 201 | ||
| 202 | ui = -ux + uy; | |
| 203 | evenPart = omegaEven*( 0.5*(pdf_NW + pdf_SE) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 204 | oddPart = omegaOdd*(0.5*(pdf_NW - pdf_SE) - ui*w_2_x3 ); | |
| 205 | dst[I(x - 1, y + 1, z, D3Q19_NW)] = pdf_NW - evenPart - oddPart; | |
| 206 | dst[I(x + 1, y - 1, z, D3Q19_SE)] = pdf_SE - evenPart + oddPart; | |
| 207 | ||
| 208 | ui = ux + uy; | |
| 209 | evenPart = omegaEven*( 0.5*(pdf_NE + pdf_SW) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 210 | oddPart = omegaOdd*(0.5*(pdf_NE - pdf_SW) - ui*w_2_x3 ); | |
| 211 | dst[I(x + 1, y + 1, z, D3Q19_NE)] = pdf_NE - evenPart - oddPart; | |
| 212 | dst[I(x - 1, y - 1, z, D3Q19_SW)] = pdf_SW - evenPart + oddPart; | |
| 213 | ||
| 214 | ui = -ux + uz; | |
| 215 | evenPart = omegaEven*( 0.5*(pdf_TW + pdf_BE) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 216 | oddPart = omegaOdd*(0.5*(pdf_TW - pdf_BE) - ui*w_2_x3 ); | |
| 217 | dst[I(x - 1, y, z + 1, D3Q19_TW)] = pdf_TW - evenPart - oddPart; | |
| 218 | dst[I(x + 1, y, z - 1, D3Q19_BE)] = pdf_BE - evenPart + oddPart; | |
| 219 | ||
| 220 | ui = ux + uz; | |
| 221 | evenPart = omegaEven*( 0.5*(pdf_TE + pdf_BW) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 222 | oddPart = omegaOdd*(0.5*(pdf_TE - pdf_BW) - ui*w_2_x3 ); | |
| 223 | dst[I(x + 1, y, z + 1, D3Q19_TE)] = pdf_TE - evenPart - oddPart; | |
| 224 | dst[I(x - 1, y, z - 1, D3Q19_BW)] = pdf_BW - evenPart + oddPart; | |
| 225 | ||
| 226 | ui = -uy + uz; | |
| 227 | evenPart = omegaEven*( 0.5*(pdf_TS + pdf_BN) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 228 | oddPart = omegaOdd*(0.5*(pdf_TS - pdf_BN) - ui*w_2_x3 ); | |
| 229 | dst[I(x, y - 1, z + 1, D3Q19_TS)] = pdf_TS - evenPart - oddPart; | |
| 230 | dst[I(x, y + 1, z - 1, D3Q19_BN)] = pdf_BN - evenPart + oddPart; | |
| 231 | ||
| 232 | ui = uy + uz; | |
| 233 | evenPart = omegaEven*( 0.5*(pdf_TN + pdf_BS) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 234 | oddPart = omegaOdd*(0.5*(pdf_TN - pdf_BS) - ui*w_2_x3 ); | |
| 235 | dst[I(x, y + 1, z + 1, D3Q19_TN)] = pdf_TN - evenPart - oddPart; | |
| 236 | dst[I(x, y - 1, z - 1, D3Q19_BS)] = pdf_BS - evenPart + oddPart; | |
| 237 | ||
| 238 | #elif PROP_MODEL_PULL | |
| 239 | ||
| 240 | // direction: w_0 | |
| 241 | dst[I(x, y, z, D3Q19_C)] = pdf_C - omegaEven*(pdf_C - w_0*dir_indep_trm); | |
| 242 | ||
| 243 | // direction: w_1 | |
| 244 | w_1_indep = w_1*dir_indep_trm; | |
| 245 | ||
| 246 | ui = uy; | |
| 247 | evenPart = omegaEven*( 0.5*(pdf_N + pdf_S) - ui*ui*w_1_nine_half - w_1_indep ); | |
| 248 | oddPart = omegaOdd*(0.5*(pdf_N - pdf_S) - ui*w_1_x3 ); | |
| 249 | dst[I(x, y, z, D3Q19_N)] = pdf_N - evenPart - oddPart; | |
| 250 | dst[I(x, y, z, D3Q19_S)] = pdf_S - evenPart + oddPart; | |
| 251 | ||
| 252 | ui = ux; | |
| 253 | evenPart = omegaEven*( 0.5*(pdf_E + pdf_W) - ui*ui*w_1_nine_half - w_1_indep ); | |
| 254 | oddPart = omegaOdd*(0.5*(pdf_E - pdf_W) - ui*w_1_x3 ); | |
| 255 | dst[I(x, y, z, D3Q19_E)] = pdf_E - evenPart - oddPart; | |
| 256 | dst[I(x, y, z, D3Q19_W)] = pdf_W - evenPart + oddPart; | |
| 257 | ||
| 258 | ui = uz; | |
| 259 | evenPart = omegaEven*( 0.5*(pdf_T + pdf_B) - ui*ui*w_1_nine_half - w_1_indep ); | |
| 260 | oddPart = omegaOdd*(0.5*(pdf_T - pdf_B) - ui*w_1_x3 ); | |
| 261 | dst[I(x, y, z, D3Q19_T)] = pdf_T - evenPart - oddPart; | |
| 262 | dst[I(x, y, z, D3Q19_B)] = pdf_B - evenPart + oddPart; | |
| 263 | ||
| 264 | // direction: w_2 | |
| 265 | w_2_indep = w_2*dir_indep_trm; | |
| 266 | ||
| 267 | ui = -ux + uy; | |
| 268 | evenPart = omegaEven*( 0.5*(pdf_NW + pdf_SE) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 269 | oddPart = omegaOdd*(0.5*(pdf_NW - pdf_SE) - ui*w_2_x3 ); | |
| 270 | dst[I(x, y, z, D3Q19_NW)] = pdf_NW - evenPart - oddPart; | |
| 271 | dst[I(x, y, z, D3Q19_SE)] = pdf_SE - evenPart + oddPart; | |
| 272 | ||
| 273 | ui = ux + uy; | |
| 274 | evenPart = omegaEven*( 0.5*(pdf_NE + pdf_SW) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 275 | oddPart = omegaOdd*(0.5*(pdf_NE - pdf_SW) - ui*w_2_x3 ); | |
| 276 | dst[I(x, y, z, D3Q19_NE)] = pdf_NE - evenPart - oddPart; | |
| 277 | dst[I(x, y, z, D3Q19_SW)] = pdf_SW - evenPart + oddPart; | |
| 278 | ||
| 279 | ui = -ux + uz; | |
| 280 | evenPart = omegaEven*( 0.5*(pdf_TW + pdf_BE) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 281 | oddPart = omegaOdd*(0.5*(pdf_TW - pdf_BE) - ui*w_2_x3 ); | |
| 282 | dst[I(x, y, z, D3Q19_TW)] = pdf_TW - evenPart - oddPart; | |
| 283 | dst[I(x, y, z, D3Q19_BE)] = pdf_BE - evenPart + oddPart; | |
| 284 | ||
| 285 | ui = ux + uz; | |
| 286 | evenPart = omegaEven*( 0.5*(pdf_TE + pdf_BW) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 287 | oddPart = omegaOdd*(0.5*(pdf_TE - pdf_BW) - ui*w_2_x3 ); | |
| 288 | dst[I(x, y, z, D3Q19_TE)] = pdf_TE - evenPart - oddPart; | |
| 289 | dst[I(x, y, z, D3Q19_BW)] = pdf_BW - evenPart + oddPart; | |
| 290 | ||
| 291 | ui = -uy + uz; | |
| 292 | evenPart = omegaEven*( 0.5*(pdf_TS + pdf_BN) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 293 | oddPart = omegaOdd*(0.5*(pdf_TS - pdf_BN) - ui*w_2_x3 ); | |
| 294 | dst[I(x, y, z, D3Q19_TS)] = pdf_TS - evenPart - oddPart; | |
| 295 | dst[I(x, y, z, D3Q19_BN)] = pdf_BN - evenPart + oddPart; | |
| 296 | ||
| 297 | ui = uy + uz; | |
| 298 | evenPart = omegaEven*( 0.5*(pdf_TN + pdf_BS) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 299 | oddPart = omegaOdd*(0.5*(pdf_TN - pdf_BS) - ui*w_2_x3 ); | |
| 300 | dst[I(x, y, z, D3Q19_TN)] = pdf_TN - evenPart - oddPart; | |
| 301 | dst[I(x, y, z, D3Q19_BS)] = pdf_BS - evenPart + oddPart; | |
| 302 | ||
| 303 | #else | |
| 304 | #error No implementation for PROP_MODEL_NAME. | |
| 305 | #endif | |
| 306 | ||
| 307 | #undef I | |
| 308 | } | |
| 309 | } | |
| 310 | } // z, y, x (from inner to outer) | |
| 311 | ||
| e3f82424 MW |
312 | // Stop counters before bounce back. Else computing loop balance will be incorrect. |
| 313 | X_LIKWID_STOP("os"); | |
| 314 | ||
| 10988083 MW |
315 | // Fixup bounce back PDFs. |
| 316 | #ifdef _OPENMP | |
| 317 | #pragma omp parallel for default(none) \ | |
| 318 | shared(kd, dst) | |
| 319 | #endif | |
| 320 | for (int i = 0; i < kd->nBounceBackPdfs; ++i) { | |
| 321 | dst[kd->BounceBackPdfsDst[i]] = dst[kd->BounceBackPdfsSrc[i]]; | |
| 322 | } | |
| 323 | ||
| 324 | #ifdef VERIFICATION | |
| 325 | kd->PdfsActive = dst; | |
| 326 | KernelAddBodyForce(kd, ld, cd); | |
| 327 | #endif | |
| 328 | ||
| 329 | #ifdef VTK_OUTPUT | |
| 330 | ||
| 331 | if (cd->VtkOutput && (iter % cd->VtkModulus) == 0) { | |
| 332 | kd->PdfsActive = dst; | |
| 333 | VtkWrite(ld, kd, cd, iter); | |
| 334 | } | |
| 335 | ||
| 336 | #endif | |
| 337 | ||
| 338 | #ifdef STATISTICS | |
| 339 | kd->PdfsActive = dst; | |
| 340 | KernelStatistics(kd, ld, cd, iter); | |
| 341 | #endif | |
| 342 | ||
| 343 | // swap grids | |
| 344 | tmp = src; | |
| 345 | src = dst; | |
| 346 | dst = tmp; | |
| 347 | ||
| 348 | } // for (int iter = 0; ... | |
| 349 | ||
| 350 | #ifdef VTK_OUTPUT | |
| 351 | ||
| 352 | if (cd->VtkOutput) { | |
| 353 | kd->PdfsActive = src; | |
| 354 | VtkWrite(ld, kd, cd, maxIterations); | |
| 355 | } | |
| 356 | ||
| 357 | #endif | |
| 358 | ||
| 359 | return; | |
| 360 | } | |
| 361 | ||
| 362 | ||
| 363 | void FNAME(D3Q19BlkKernel)(LatticeDesc * ld, KernelData * kernelData, CaseData * cd) | |
| 364 | { | |
| 365 | Assert(ld != NULL); | |
| 366 | Assert(kernelData != NULL); | |
| 367 | Assert(cd != NULL); | |
| 368 | ||
| 369 | Assert(cd->Omega > 0.0); | |
| 370 | Assert(cd->Omega < 2.0); | |
| 371 | ||
| 372 | KernelData * kd = (KernelData *)kernelData; | |
| 373 | ||
| 374 | ||
| 375 | int nX = ld->Dims[0]; | |
| 376 | int nY = ld->Dims[1]; | |
| 377 | int nZ = ld->Dims[2]; | |
| 378 | ||
| 379 | int * gDims = kd->GlobalDims; | |
| 380 | ||
| 381 | int oX = kd->Offsets[0]; | |
| 382 | int oY = kd->Offsets[1]; | |
| 383 | int oZ = kd->Offsets[2]; | |
| 384 | ||
| 385 | KernelDataEx * kdex = (KernelDataEx *)kd; | |
| 386 | ||
| 387 | int blk[3]; | |
| 388 | blk[0] = kdex->Blk[0]; | |
| 389 | blk[1] = kdex->Blk[1]; | |
| 390 | blk[2] = kdex->Blk[2]; | |
| 391 | ||
| 392 | PdfT omega = cd->Omega; | |
| 393 | PdfT omegaEven = omega; | |
| 394 | // PdfT omegaOdd = 8.0*((2.0-omegaEven)/(8.0-omegaEven)); //"standard" trt odd relaxation parameter | |
| 395 | PdfT magicParam = 1.0/12.0; // 1/4: best stability; 1/12: removes third-order advection error (best advection); 1/6: removes fourth-order diffusion error (best diffusion); 3/16: exact location of bounce back for poiseuille flow | |
| 396 | PdfT omegaOdd = 1.0/( 0.5 + magicParam/(1.0/omega - 0.5) ); | |
| 397 | ||
| 398 | PdfT evenPart = 0.0; | |
| 399 | PdfT oddPart = 0.0; | |
| 400 | PdfT dir_indep_trm = 0.0; | |
| 401 | ||
| 402 | PdfT w_0 = 1.0 / 3.0; | |
| 403 | PdfT w_1 = 1.0 / 18.0; | |
| 404 | PdfT w_2 = 1.0 / 36.0; | |
| 405 | ||
| 406 | PdfT w_1_x3 = w_1 * 3.0; PdfT w_1_nine_half = w_1 * 9.0/2.0; PdfT w_1_indep = 0.0; | |
| 407 | PdfT w_2_x3 = w_2 * 3.0; PdfT w_2_nine_half = w_2 * 9.0/2.0; PdfT w_2_indep = 0.0; | |
| 408 | ||
| 409 | PdfT ux, uy, uz, ui; | |
| 410 | PdfT dens; | |
| 411 | ||
| 412 | // Declare pdf_N, pdf_E, pdf_S, pdf_W, ... | |
| 413 | #define X(name, idx, idxinv, x, y, z) PdfT JOIN(pdf_,name); | |
| 414 | D3Q19_LIST | |
| 415 | #undef X | |
| 416 | ||
| 417 | PdfT * src = kd->Pdfs[0]; | |
| 418 | PdfT * dst = kd->Pdfs[1]; | |
| 419 | PdfT * tmp; | |
| 420 | ||
| 421 | int maxIterations = cd->MaxIterations; | |
| 422 | ||
| 423 | #ifdef VTK_OUTPUT | |
| 424 | if (cd->VtkOutput) { | |
| 425 | kd->PdfsActive = src; | |
| 426 | VtkWrite(ld, kd, cd, 0); | |
| 427 | } | |
| 428 | #endif | |
| 429 | ||
| 430 | int nThreads = 1; | |
| 431 | ||
| 432 | #ifdef _OPENMP | |
| 433 | nThreads = omp_get_max_threads(); | |
| 434 | #endif | |
| 435 | ||
| 436 | for (int iter = 0; iter < maxIterations; ++iter) { | |
| 437 | ||
| 10988083 | 438 | #ifdef _OPENMP |
| e3f82424 | 439 | #pragma omp parallel default(none) \ |
| 10988083 MW |
440 | shared(gDims,src, dst, w_0, w_1, w_2, omegaEven, omegaOdd, \ |
| 441 | w_1_x3, w_2_x3, w_1_nine_half, w_2_nine_half, cd, \ | |
| 442 | oX, oY, oZ, nX, nY, nZ, blk, nThreads) \ | |
| 443 | private(ux, uy, uz, ui, dens, dir_indep_trm, \ | |
| 444 | pdf_C, \ | |
| 445 | pdf_N, pdf_E, pdf_S, pdf_W, \ | |
| 446 | pdf_NE, pdf_SE, pdf_SW, pdf_NW, \ | |
| 447 | pdf_T, pdf_TN, pdf_TE, pdf_TS, pdf_TW, \ | |
| 448 | pdf_B, pdf_BN, pdf_BE, pdf_BS, pdf_BW, \ | |
| 449 | evenPart, oddPart, w_1_indep, w_2_indep) | |
| 450 | #endif | |
| e3f82424 MW |
451 | { |
| 452 | X_LIKWID_START("blk-os"); | |
| 10988083 | 453 | |
| e3f82424 | 454 | int threadId = omp_get_thread_num(); |
| 10988083 | 455 | |
| e3f82424 MW |
456 | int threadStartX = nX / nThreads * threadId; |
| 457 | int threadEndX = nX / nThreads * (threadId + 1); | |
| 10988083 MW |
458 | |
| 459 | if (nX % nThreads > 0) { | |
| e3f82424 MW |
460 | if (nX % nThreads > threadId) { |
| 461 | threadStartX += threadId; | |
| 462 | threadEndX += threadId + 1; | |
| 10988083 MW |
463 | } |
| 464 | else { | |
| 465 | threadStartX += nX % nThreads; | |
| 466 | threadEndX += nX % nThreads; | |
| 467 | } | |
| 468 | } | |
| 469 | ||
| e3f82424 | 470 | for (int bX = oX + threadStartX; bX < threadEndX + oX; bX += blk[0]) { |
| 10988083 | 471 | for (int bY = oY; bY < nY + oY; bY += blk[1]) { |
| e3f82424 | 472 | for (int bZ = oZ; bZ < nZ + oZ; bZ += blk[2]) { |
| 10988083 MW |
473 | |
| 474 | // Must do everything here, else it would break collapse. | |
| 475 | int eZ = MIN(bZ + blk[2], nZ + oZ); | |
| 476 | int eY = MIN(bY + blk[1], nY + oY); | |
| 477 | int eX = MIN(bX + blk[0], threadEndX + oX); | |
| 478 | ||
| e3f82424 | 479 | for (int x = bX; x < eX; ++x) { |
| 10988083 | 480 | for (int y = bY; y < eY; ++y) { |
| e3f82424 | 481 | for (int z = bZ; z < eZ; ++z) { |
| 10988083 MW |
482 | |
| 483 | #define I(x, y, z, dir) P_INDEX_5(gDims, (x), (y), (z), (dir)) | |
| 484 | ||
| 485 | #ifdef PROP_MODEL_PUSH | |
| 486 | ||
| 487 | // Load PDFs of local cell: pdf_N = src[I(x, y, z, D3Q19_N)]; ... | |
| 488 | #define X(name, idx, idxinv, _x, _y, _z) JOIN(pdf_,name) = src[I(x, y, z, idx)]; | |
| 10988083 MW |
489 | D3Q19_LIST |
| 490 | #undef X | |
| 491 | ||
| 492 | #elif PROP_MODEL_PULL | |
| 493 | ||
| 494 | // Load PDFs of local cell: pdf_N = src[I(x, y, z, D3Q19_N)]; ... | |
| 495 | #define X(name, idx, idxinv, _x, _y, _z) JOIN(pdf_,name) = src[I(x - _x, y - _y, z - _z, idx)]; | |
| 10988083 MW |
496 | D3Q19_LIST |
| 497 | #undef X | |
| 498 | ||
| 499 | #else | |
| 500 | #error No implementation for PROP_MODEL_NAME. | |
| 501 | #endif | |
| 502 | ||
| 503 | // #define LID_DRIVEN_CAVITY | |
| 504 | ||
| 505 | #ifdef LID_DRIVEN_CAVITY | |
| 506 | ||
| 507 | if (z == nZ - 4 + oZ && x > 3 + oX && x < (nX - 4 + oX) && y > 3 + oY && y < (nY - 4 + oY)) { | |
| 508 | ux = 0.1 * 0.577; | |
| 509 | uy = 0.0; | |
| 510 | uz = 0.0; | |
| 511 | ||
| 512 | } else { | |
| 513 | #endif | |
| 514 | ux = pdf_E + pdf_NE + pdf_SE + pdf_TE + pdf_BE - | |
| e3f82424 | 515 | pdf_W - pdf_NW - pdf_SW - pdf_TW - pdf_BW; |
| 10988083 | 516 | uy = pdf_N + pdf_NE + pdf_NW + pdf_TN + pdf_BN - |
| e3f82424 | 517 | pdf_S - pdf_SE - pdf_SW - pdf_TS - pdf_BS; |
| 10988083 | 518 | uz = pdf_T + pdf_TE + pdf_TW + pdf_TN + pdf_TS - |
| e3f82424 | 519 | pdf_B - pdf_BE - pdf_BW - pdf_BN - pdf_BS; |
| 10988083 MW |
520 | #ifdef LID_DRIVEN_CAVITY |
| 521 | } | |
| 522 | ||
| 523 | #endif | |
| 524 | ||
| 525 | dens = pdf_C + | |
| 526 | pdf_N + pdf_E + pdf_S + pdf_W + | |
| 527 | pdf_NE + pdf_SE + pdf_SW + pdf_NW + | |
| 528 | pdf_T + pdf_TN + pdf_TE + pdf_TS + pdf_TW + | |
| 529 | pdf_B + pdf_BN + pdf_BE + pdf_BS + pdf_BW; | |
| 530 | ||
| 531 | dir_indep_trm = dens - (ux * ux + uy * uy + uz * uz)*3.0/2.0; | |
| 532 | ||
| 533 | #ifdef PROP_MODEL_PUSH | |
| 534 | ||
| 535 | // direction: w_0 | |
| 536 | dst[I(x, y, z, D3Q19_C)] = pdf_C - omegaEven*(pdf_C - w_0*dir_indep_trm); | |
| 537 | ||
| 538 | // direction: w_1 | |
| 539 | w_1_indep = w_1*dir_indep_trm; | |
| 540 | ||
| 541 | ui = uy; | |
| 542 | evenPart = omegaEven*( 0.5*(pdf_N + pdf_S) - ui*ui*w_1_nine_half - w_1_indep ); | |
| 543 | oddPart = omegaOdd*(0.5*(pdf_N - pdf_S) - ui*w_1_x3 ); | |
| 544 | dst[I(x, y + 1, z, D3Q19_N)] = pdf_N - evenPart - oddPart; | |
| 545 | dst[I(x, y - 1, z, D3Q19_S)] = pdf_S - evenPart + oddPart; | |
| 546 | ||
| 547 | ui = ux; | |
| 548 | evenPart = omegaEven*( 0.5*(pdf_E + pdf_W) - ui*ui*w_1_nine_half - w_1_indep ); | |
| 549 | oddPart = omegaOdd*(0.5*(pdf_E - pdf_W) - ui*w_1_x3 ); | |
| 550 | dst[I(x + 1, y, z, D3Q19_E)] = pdf_E - evenPart - oddPart; | |
| 551 | dst[I(x - 1, y, z, D3Q19_W)] = pdf_W - evenPart + oddPart; | |
| 552 | ||
| 553 | ui = uz; | |
| 554 | evenPart = omegaEven*( 0.5*(pdf_T + pdf_B) - ui*ui*w_1_nine_half - w_1_indep ); | |
| 555 | oddPart = omegaOdd*(0.5*(pdf_T - pdf_B) - ui*w_1_x3 ); | |
| 556 | dst[I(x, y, z + 1, D3Q19_T)] = pdf_T - evenPart - oddPart; | |
| 557 | dst[I(x, y, z - 1, D3Q19_B)] = pdf_B - evenPart + oddPart; | |
| 558 | ||
| 559 | // direction: w_2 | |
| 560 | w_2_indep = w_2*dir_indep_trm; | |
| 561 | ||
| 562 | ui = -ux + uy; | |
| 563 | evenPart = omegaEven*( 0.5*(pdf_NW + pdf_SE) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 564 | oddPart = omegaOdd*(0.5*(pdf_NW - pdf_SE) - ui*w_2_x3 ); | |
| 565 | dst[I(x - 1, y + 1, z, D3Q19_NW)] = pdf_NW - evenPart - oddPart; | |
| 566 | dst[I(x + 1, y - 1, z, D3Q19_SE)] = pdf_SE - evenPart + oddPart; | |
| 567 | ||
| 568 | ui = ux + uy; | |
| 569 | evenPart = omegaEven*( 0.5*(pdf_NE + pdf_SW) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 570 | oddPart = omegaOdd*(0.5*(pdf_NE - pdf_SW) - ui*w_2_x3 ); | |
| 571 | dst[I(x + 1, y + 1, z, D3Q19_NE)] = pdf_NE - evenPart - oddPart; | |
| 572 | dst[I(x - 1, y - 1, z, D3Q19_SW)] = pdf_SW - evenPart + oddPart; | |
| 573 | ||
| 574 | ui = -ux + uz; | |
| 575 | evenPart = omegaEven*( 0.5*(pdf_TW + pdf_BE) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 576 | oddPart = omegaOdd*(0.5*(pdf_TW - pdf_BE) - ui*w_2_x3 ); | |
| 577 | dst[I(x - 1, y, z + 1, D3Q19_TW)] = pdf_TW - evenPart - oddPart; | |
| 578 | dst[I(x + 1, y, z - 1, D3Q19_BE)] = pdf_BE - evenPart + oddPart; | |
| 579 | ||
| 580 | ui = ux + uz; | |
| 581 | evenPart = omegaEven*( 0.5*(pdf_TE + pdf_BW) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 582 | oddPart = omegaOdd*(0.5*(pdf_TE - pdf_BW) - ui*w_2_x3 ); | |
| 583 | dst[I(x + 1, y, z + 1, D3Q19_TE)] = pdf_TE - evenPart - oddPart; | |
| 584 | dst[I(x - 1, y, z - 1, D3Q19_BW)] = pdf_BW - evenPart + oddPart; | |
| 585 | ||
| 586 | ui = -uy + uz; | |
| 587 | evenPart = omegaEven*( 0.5*(pdf_TS + pdf_BN) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 588 | oddPart = omegaOdd*(0.5*(pdf_TS - pdf_BN) - ui*w_2_x3 ); | |
| 589 | dst[I(x, y - 1, z + 1, D3Q19_TS)] = pdf_TS - evenPart - oddPart; | |
| 590 | dst[I(x, y + 1, z - 1, D3Q19_BN)] = pdf_BN - evenPart + oddPart; | |
| 591 | ||
| 592 | ui = uy + uz; | |
| 593 | evenPart = omegaEven*( 0.5*(pdf_TN + pdf_BS) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 594 | oddPart = omegaOdd*(0.5*(pdf_TN - pdf_BS) - ui*w_2_x3 ); | |
| 595 | dst[I(x, y + 1, z + 1, D3Q19_TN)] = pdf_TN - evenPart - oddPart; | |
| 596 | dst[I(x, y - 1, z - 1, D3Q19_BS)] = pdf_BS - evenPart + oddPart; | |
| 597 | ||
| 598 | #elif PROP_MODEL_PULL | |
| 599 | ||
| 600 | // direction: w_0 | |
| 601 | dst[I(x, y, z, D3Q19_C)] = pdf_C - omegaEven*(pdf_C - w_0*dir_indep_trm); | |
| 602 | ||
| 603 | // direction: w_1 | |
| 604 | w_1_indep = w_1*dir_indep_trm; | |
| 605 | ||
| 606 | ui = uy; | |
| 607 | evenPart = omegaEven*( 0.5*(pdf_N + pdf_S) - ui*ui*w_1_nine_half - w_1_indep ); | |
| 608 | oddPart = omegaOdd*(0.5*(pdf_N - pdf_S) - ui*w_1_x3 ); | |
| 609 | dst[I(x, y, z, D3Q19_N)] = pdf_N - evenPart - oddPart; | |
| 610 | dst[I(x, y, z, D3Q19_S)] = pdf_S - evenPart + oddPart; | |
| 611 | ||
| 612 | ui = ux; | |
| 613 | evenPart = omegaEven*( 0.5*(pdf_E + pdf_W) - ui*ui*w_1_nine_half - w_1_indep ); | |
| 614 | oddPart = omegaOdd*(0.5*(pdf_E - pdf_W) - ui*w_1_x3 ); | |
| 615 | dst[I(x, y, z, D3Q19_E)] = pdf_E - evenPart - oddPart; | |
| 616 | dst[I(x, y, z, D3Q19_W)] = pdf_W - evenPart + oddPart; | |
| 617 | ||
| 618 | ui = uz; | |
| 619 | evenPart = omegaEven*( 0.5*(pdf_T + pdf_B) - ui*ui*w_1_nine_half - w_1_indep ); | |
| 620 | oddPart = omegaOdd*(0.5*(pdf_T - pdf_B) - ui*w_1_x3 ); | |
| 621 | dst[I(x, y, z, D3Q19_T)] = pdf_T - evenPart - oddPart; | |
| 622 | dst[I(x, y, z, D3Q19_B)] = pdf_B - evenPart + oddPart; | |
| 623 | ||
| 624 | // direction: w_2 | |
| 625 | w_2_indep = w_2*dir_indep_trm; | |
| 626 | ||
| 627 | ui = -ux + uy; | |
| 628 | evenPart = omegaEven*( 0.5*(pdf_NW + pdf_SE) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 629 | oddPart = omegaOdd*(0.5*(pdf_NW - pdf_SE) - ui*w_2_x3 ); | |
| 630 | dst[I(x, y, z, D3Q19_NW)] = pdf_NW - evenPart - oddPart; | |
| 631 | dst[I(x, y, z, D3Q19_SE)] = pdf_SE - evenPart + oddPart; | |
| 632 | ||
| 633 | ui = ux + uy; | |
| 634 | evenPart = omegaEven*( 0.5*(pdf_NE + pdf_SW) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 635 | oddPart = omegaOdd*(0.5*(pdf_NE - pdf_SW) - ui*w_2_x3 ); | |
| 636 | dst[I(x, y, z, D3Q19_NE)] = pdf_NE - evenPart - oddPart; | |
| 637 | dst[I(x, y, z, D3Q19_SW)] = pdf_SW - evenPart + oddPart; | |
| 638 | ||
| 639 | ui = -ux + uz; | |
| 640 | evenPart = omegaEven*( 0.5*(pdf_TW + pdf_BE) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 641 | oddPart = omegaOdd*(0.5*(pdf_TW - pdf_BE) - ui*w_2_x3 ); | |
| 642 | dst[I(x, y, z, D3Q19_TW)] = pdf_TW - evenPart - oddPart; | |
| 643 | dst[I(x, y, z, D3Q19_BE)] = pdf_BE - evenPart + oddPart; | |
| 644 | ||
| 645 | ui = ux + uz; | |
| 646 | evenPart = omegaEven*( 0.5*(pdf_TE + pdf_BW) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 647 | oddPart = omegaOdd*(0.5*(pdf_TE - pdf_BW) - ui*w_2_x3 ); | |
| 648 | dst[I(x, y, z, D3Q19_TE)] = pdf_TE - evenPart - oddPart; | |
| 649 | dst[I(x, y, z, D3Q19_BW)] = pdf_BW - evenPart + oddPart; | |
| 650 | ||
| 651 | ui = -uy + uz; | |
| 652 | evenPart = omegaEven*( 0.5*(pdf_TS + pdf_BN) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 653 | oddPart = omegaOdd*(0.5*(pdf_TS - pdf_BN) - ui*w_2_x3 ); | |
| 654 | dst[I(x, y, z, D3Q19_TS)] = pdf_TS - evenPart - oddPart; | |
| 655 | dst[I(x, y, z, D3Q19_BN)] = pdf_BN - evenPart + oddPart; | |
| 656 | ||
| 657 | ui = uy + uz; | |
| 658 | evenPart = omegaEven*( 0.5*(pdf_TN + pdf_BS) - ui*ui*w_2_nine_half - w_2_indep ); | |
| 659 | oddPart = omegaOdd*(0.5*(pdf_TN - pdf_BS) - ui*w_2_x3 ); | |
| 660 | dst[I(x, y, z, D3Q19_TN)] = pdf_TN - evenPart - oddPart; | |
| 661 | dst[I(x, y, z, D3Q19_BS)] = pdf_BS - evenPart + oddPart; | |
| 662 | ||
| 663 | #else | |
| 664 | #error No implementation for PROP_MODEL_NAME. | |
| 665 | #endif | |
| 666 | ||
| 667 | #undef I | |
| 668 | } | |
| 669 | } | |
| 670 | } // z, y, x (from inner to outer) | |
| 671 | } | |
| 672 | } | |
| 673 | } // z, y, x (from inner to outer) | |
| 674 | ||
| e3f82424 MW |
675 | X_LIKWID_STOP("blk-os"); |
| 676 | } // parallel region | |
| 677 | ||
| 678 | // Stop counters before bounce back. Else computing loop balance will be incorrect. | |
| 10988083 MW |
679 | |
| 680 | // Fixup bounce back PDFs. | |
| 681 | #ifdef _OPENMP | |
| 682 | #pragma omp parallel for default(none) \ | |
| 683 | shared(kd, dst) | |
| 684 | #endif | |
| 685 | for (int i = 0; i < kd->nBounceBackPdfs; ++i) { | |
| 686 | dst[kd->BounceBackPdfsDst[i]] = dst[kd->BounceBackPdfsSrc[i]]; | |
| 687 | } | |
| 688 | ||
| 689 | #ifdef VERIFICATION | |
| 690 | kd->PdfsActive = dst; | |
| 691 | KernelAddBodyForce(kd, ld, cd); | |
| 692 | #endif | |
| 693 | ||
| 694 | #ifdef VTK_OUTPUT | |
| 695 | ||
| 696 | if (cd->VtkOutput && (iter % cd->VtkModulus) == 0) { | |
| 697 | kd->PdfsActive = dst; | |
| 698 | VtkWrite(ld, kd, cd, iter); | |
| 699 | } | |
| 700 | ||
| 701 | #endif | |
| 702 | ||
| 703 | #ifdef STATISTICS | |
| 704 | kd->PdfsActive = dst; | |
| 705 | KernelStatistics(kd, ld, cd, iter); | |
| 706 | #endif | |
| 707 | ||
| 708 | // swap grids | |
| 709 | tmp = src; | |
| 710 | src = dst; | |
| 711 | dst = tmp; | |
| 712 | ||
| 713 | } // for (int iter = 0; ... | |
| 714 | ||
| 715 | #ifdef VTK_OUTPUT | |
| 716 | ||
| 717 | if (cd->VtkOutput) { | |
| 718 | kd->PdfsActive = src; | |
| 719 | VtkWrite(ld, kd, cd, maxIterations); | |
| 720 | } | |
| 721 | ||
| 722 | #endif | |
| 723 | ||
| 724 | return; | |
| 725 | } | |
| 726 |