--- /dev/null
+// --------------------------------------------------------------------------
+//
+// Copyright
+// Markus Wittmann, 2016-2017
+// RRZE, University of Erlangen-Nuremberg, Germany
+// markus.wittmann -at- fau.de or hpc -at- rrze.fau.de
+//
+// Viktor Haag, 2016
+// LSS, University of Erlangen-Nuremberg, Germany
+//
+// This file is part of the Lattice Boltzmann Benchmark Kernels (LbmBenchKernels).
+//
+// LbmBenchKernels 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.
+//
+// LbmBenchKernels 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 LbmBenchKernels. If not, see <http://www.gnu.org/licenses/>.
+//
+// --------------------------------------------------------------------------
+
+#ifndef INDEX_START
+ #error INDEX_START must be defined
+#endif
+
+#ifndef INDEX_STOP
+ #error INDEX_STOP must be defined
+#endif
+
+ #define I(index, dir) P_INDEX_3((nCells), (index), (dir))
+
+ for (int blockedIndex = (INDEX_START); blockedIndex < (INDEX_STOP); blockedIndex += nTmpArray) {
+
+ indexMax = MinI(nTmpArray, (INDEX_STOP) - blockedIndex);
+#ifdef DEBUG
+ memset(tmpArray, -1, sizeof(PdfT) * nTmpArray * N_TMP);
+#endif
+ for (int index = 0; index < indexMax; ++index) {
+
+
+ adjListIndex = (index + blockedIndex) * N_D3Q19_IDX;
+
+ pdf_C = src[I(index + blockedIndex, D3Q19_C)];
+
+ #define X(name, idx, idxinv, _x, _y, _z) JOIN(pdf_,name) = src[adjList[adjListIndex + idx]]; tmpArray[TMP_INDEX(index, idx)] = JOIN(pdf_,name);
+ D3Q19_LIST_WO_C
+ #undef X
+
+ ux = pdf_E + pdf_NE + pdf_SE + pdf_TE + pdf_BE -
+ pdf_W - pdf_NW - pdf_SW - pdf_TW - pdf_BW;
+ uy = pdf_N + pdf_NE + pdf_NW + pdf_TN + pdf_BN -
+ pdf_S - pdf_SE - pdf_SW - pdf_TS - pdf_BS;
+ uz = pdf_T + pdf_TE + pdf_TW + pdf_TN + pdf_TS -
+ pdf_B - pdf_BE - pdf_BW - pdf_BN - pdf_BS;
+
+ tmpArray[TMP_INDEX(index, TMP_UX)] = ux;
+ tmpArray[TMP_INDEX(index, TMP_UY)] = uy;
+ tmpArray[TMP_INDEX(index, TMP_UZ)] = uz;
+
+ dens = pdf_C +
+ pdf_N + pdf_E + pdf_S + pdf_W +
+ pdf_NE + pdf_SE + pdf_SW + pdf_NW +
+ pdf_T + pdf_TN + pdf_TE + pdf_TS + pdf_TW +
+ pdf_B + pdf_BN + pdf_BE + pdf_BS + pdf_BW;
+
+ dir_indep_trm = dens - (ux * ux + uy * uy + uz * uz) * 3.0 / 2.0;
+
+ w_1_indep = w_1 * dir_indep_trm;
+ w_2_indep = w_2 * dir_indep_trm;
+
+ tmpArray[TMP_INDEX(index, TMP_W1)] = w_1_indep;
+ tmpArray[TMP_INDEX(index, TMP_W2)] = w_2_indep;
+
+ dst[I(index + blockedIndex, D3Q19_C )] = pdf_C - omegaEven * (pdf_C - w_0 * dir_indep_trm);
+ }
+
+
+ #define LOOP_1(_dir1, _dir2, _vel, _vel_tmp) \
+ for (int index = 0; index < indexMax; ++index) { \
+ _vel = tmpArray[TMP_INDEX(index, JOIN(TMP_,_vel_tmp))]; \
+ JOIN(pdf_,_dir1) = tmpArray[TMP_INDEX(index, JOIN(D3Q19_,_dir1))]; \
+ JOIN(pdf_,_dir2) = tmpArray[TMP_INDEX(index, JOIN(D3Q19_,_dir2))]; \
+ w_1_indep = tmpArray[TMP_INDEX(index, TMP_W1)]; \
+ \
+ ui = _vel; \
+ evenPart = omegaEven * (0.5 * (JOIN(pdf_,_dir1) + JOIN(pdf_,_dir2)) - ui * ui * w_1_nine_half - w_1_indep); \
+ oddPart = omegaOdd * (0.5 * (JOIN(pdf_,_dir1) - JOIN(pdf_,_dir2)) - ui * w_1_x3); \
+ dst[I(index + blockedIndex, JOIN(D3Q19_,_dir1) )] = JOIN(pdf_,_dir1) - evenPart - oddPart; \
+ dst[I(index + blockedIndex, JOIN(D3Q19_,_dir2) )] = JOIN(pdf_,_dir2) - evenPart + oddPart; \
+ }
+
+ #define LOOP_2(_dir1, _dir2, _v1, _v2, _v1_tmp, _v2_tmp, _expr) \
+ for (int index = 0; index < indexMax; ++index) { \
+ _v1 = tmpArray[TMP_INDEX(index, JOIN(TMP_,_v1_tmp))]; \
+ _v2 = tmpArray[TMP_INDEX(index, JOIN(TMP_,_v2_tmp))]; \
+ JOIN(pdf_,_dir1) = tmpArray[TMP_INDEX(index, JOIN(D3Q19_,_dir1))]; \
+ JOIN(pdf_,_dir2) = tmpArray[TMP_INDEX(index, JOIN(D3Q19_,_dir2))]; \
+ w_2_indep = tmpArray[TMP_INDEX(index, TMP_W2)]; \
+ \
+ ui = _expr; \
+ evenPart = omegaEven * (0.5 * (JOIN(pdf_,_dir1) + JOIN(pdf_,_dir2)) - ui * ui * w_2_nine_half - w_2_indep); \
+ oddPart = omegaOdd * (0.5 * (JOIN(pdf_,_dir1) - JOIN(pdf_,_dir2)) - ui * w_2_x3); \
+ dst[I(index + blockedIndex, JOIN(D3Q19_,_dir1))] = JOIN(pdf_,_dir1) - evenPart - oddPart; \
+ dst[I(index + blockedIndex, JOIN(D3Q19_,_dir2))] = JOIN(pdf_,_dir2) - evenPart + oddPart; \
+ }
+
+ LOOP_1(N, S, uy, UY);
+ LOOP_1(E, W, ux, UX);
+ LOOP_1(T, B, uz, UZ);
+
+ LOOP_2(NW, SE, uy, ux, UY, UX, uy - ux);
+ LOOP_2(NE, SW, uy, ux, UY, UX, uy + ux);
+ LOOP_2(TW, BE, ux, uz, UX, UZ, uz - ux);
+ LOOP_2(TE, BW, ux, uz, UX, UZ, uz + ux);
+ LOOP_2(TS, BN, uy, uz, UY, UZ, uz - uy);
+ LOOP_2(TN, BS, uy, uz, UY, UZ, uz + uy);
+
+ #undef LOOP_1
+ #undef LOOP_2
+
+
+ }
+
+ #undef I
+
+ #undef INDEX_START
+ #undef INDEX_STOP
projects / LbmBenchmarkKernelsPublic.git / blobdiff