version 0.1
[LbmBenchmarkKernelsPublic.git] / src / BenchKernelD3Q19ListAaCommon.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 "BenchKernelD3Q19ListAaCommon.h"
28
29 #include "Memory.h"
30 #include "Vtk.h"
31
32 #include <math.h>
33
34
35 // Forward definition.
36 void FNAME(D3Q19ListAaKernel)(LatticeDesc * ld, struct KernelData_ * kd, CaseData * cd);
37
38
39
40
41 // -----------------------------------------------------------------------
42 // Functions which are used as callback by the kernel to read or write
43 // PDFs and nodes.
44
45 static void FNAME(BCGetPdf)(KernelData * kd, int x, int y, int z, int dir, PdfT * pdf)
46 {
47         Assert(kd != NULL);
48         Assert(kd->PdfsActive != NULL);
49         Assert(kd->PdfsActive == kd->Pdfs[0] || kd->PdfsActive == kd->Pdfs[1]);
50         Assert(pdf != NULL);
51
52         Assert(x >= 0); Assert(y >= 0); Assert(z >= 0);
53         Assert(x < kd->Dims[0]); Assert(y < kd->Dims[1]); Assert(z < kd->Dims[2]);
54         Assert(dir >= 0); Assert(dir < N_D3Q19);
55
56         KernelDataList * kdl = (KernelDataList *)kd;
57
58         if (kdl->Iteration % 2 == 0) {
59                 // Pdfs are stored inverse, local PDFs are located in remote nodes
60
61                 uint32_t nodeIndex = KDL(kd)->Grid[L_INDEX_4(kd->Dims, x, y, z)];
62
63                 if (dir != D3Q19_C) {
64                         uint32_t adjListIndex = nodeIndex * N_D3Q19_IDX;
65
66                         *pdf = kd->PdfsActive[KDL(kd)->AdjList[adjListIndex + D3Q19_INV[dir]]];
67                 }
68                 else {
69                         *pdf = kd->PdfsActive[P_INDEX_3(KDL(kd)->nCells, nodeIndex, dir)];
70                 }
71
72         }
73         else {
74                 *pdf = kd->PdfsActive[P_INDEX_5(KDL(kd), x, y, z, dir)];
75         }
76
77
78         return;
79 }
80
81 static void FNAME(BCSetPdf)(KernelData * kd, int x, int y, int z, int dir, PdfT pdf)
82 {
83         Assert(kd != NULL);
84         Assert(kd->PdfsActive != NULL);
85         Assert(kd->PdfsActive == kd->Pdfs[0] || kd->PdfsActive == kd->Pdfs[1]);
86         Assert(x >= 0); Assert(y >= 0); Assert(z >= 0);
87         Assert(x < kd->Dims[0]); Assert(y < kd->Dims[1]); Assert(z < kd->Dims[2]);
88         Assert(dir >= 0); Assert(dir < N_D3Q19);
89
90         if (isnan(pdf)) {
91                 printf("ERROR: setting nan %d %d %d %d %s\n", x, y, z, dir, D3Q19_NAMES[dir]);
92                 DEBUG_BREAK_POINT();
93                 exit(1);
94         }
95
96         KernelDataList * kdl = (KernelDataList *)kd;
97
98         if (kdl->Iteration % 2 == 0) {
99                 // Pdfs are stored inverse, local PDFs are located in remote nodes
100
101                 uint32_t nodeIndex = KDL(kd)->Grid[L_INDEX_4(kd->Dims, x, y, z)];
102
103                 if (dir != D3Q19_C) {
104                         uint32_t adjListIndex = nodeIndex * N_D3Q19_IDX;
105
106                         kd->PdfsActive[KDL(kd)->AdjList[adjListIndex + D3Q19_INV[dir]]] = pdf;
107                 }
108                 else {
109                         kd->PdfsActive[P_INDEX_3(KDL(kd)->nCells, nodeIndex, dir)] = pdf;
110                 }
111
112         }
113         else {
114                 kd->PdfsActive[P_INDEX_5(KDL(kd), x, y, z, dir)] = pdf;
115         }
116
117         return;
118 }
119
120
121 static void GetNode(KernelData * kd, int x, int y, int z, PdfT * pdfs)
122 {
123         Assert(kd != NULL);
124         Assert(kd->PdfsActive != NULL);
125         Assert(kd->PdfsActive == kd->Pdfs[0] || kd->PdfsActive == kd->Pdfs[1]);
126         Assert(pdfs != NULL);
127         Assert(x >= 0); Assert(y >= 0); Assert(z >= 0);
128         Assert(x < kd->Dims[0]); Assert(y < kd->Dims[1]); Assert(z < kd->Dims[2]);
129
130         KernelDataList * kdl = (KernelDataList *)kd;
131
132         if(kdl->Iteration % 2 == 0){
133
134                 uint32_t nodeIndex = kdl->Grid[L_INDEX_4(kdl->kd.Dims, x, y, z)];
135                 uint32_t adjListIndex = nodeIndex * N_D3Q19_IDX;
136
137                 // Load PDFs of local cell: pdf_N = src[adjList[adjListIndex + D3Q19_S]]; ...
138                 pdfs[D3Q19_C] = kd->PdfsActive[P_INDEX_3(kdl->nCells, nodeIndex, D3Q19_C)];
139
140                 #define X(name, idx, idxinv, _x, _y, _z)        pdfs[idx] = kd->PdfsActive[kdl->AdjList[adjListIndex + idxinv]];
141                 D3Q19_LIST_WO_C
142                 #undef X
143
144         } else {
145
146                 #define I(x, y, z, dir) P_INDEX_5(KDL(kd), (x), (y), (z), (dir))
147                 #define X(name, idx, idxinv, _x, _y, _z)        pdfs[idx] = kd->PdfsActive[I(x, y, z, idx)];
148                 D3Q19_LIST
149                 #undef X
150                 #undef I
151
152         }
153
154 #if 0
155         // Detect NaNs
156         for (int d = 0; d < 19; ++d) {
157                 if(isnan(pdfs[d]) || isinf(pdfs[d])) {
158                         printf("%d %d %d %d nan! get node\n", x, y, z, d);
159                                                 for (int d2 = 0; d2 < 19; ++d2) {
160                                                         printf("%d: %e\n", d2, pdfs[d2]);
161                                                 }
162                         exit(1);
163                 }
164         }
165 #endif
166
167         return;
168 }
169
170
171 static void SetNode(KernelData * kd, int x, int y, int z, PdfT * pdfs)
172 {
173         Assert(kd != NULL);
174         Assert(kd->PdfsActive != NULL);
175         Assert(kd->PdfsActive == kd->Pdfs[0] || kd->PdfsActive == kd->Pdfs[1]);
176         Assert(pdfs != NULL);
177
178         Assert(x >= 0); Assert(y >= 0); Assert(z >= 0);
179         Assert(x < kd->Dims[0]); Assert(y < kd->Dims[1]); Assert(z < kd->Dims[2]);
180
181 #if 0
182         // Detect NaNs
183         for (int d = 0; d < 19; ++d) {
184                 if(isnan(pdfs[d])) {
185                         printf("%d %d %d %d nan! get node\n", x, y, z, d);
186                                                 for (int d2 = 0; d2 < 19; ++d2) {
187                                                         printf("%d: %e\n", d2, pdfs[d2]);
188                                                 }
189                         exit(1);
190                 }
191         }
192 #endif
193
194         KernelDataList * kdl = (KernelDataList *)kd;
195
196         if(kdl->Iteration % 2 == 0){
197
198                 uint32_t nodeIndex = kdl->Grid[L_INDEX_4(kdl->kd.Dims, x, y, z)];
199                 uint32_t adjListIndex = nodeIndex * N_D3Q19_IDX;
200
201                 // Load PDFs of local cell: pdf_N = src[adjList[adjListIndex + D3Q19_S]]; ...
202                 kd->PdfsActive[P_INDEX_3(kdl->nCells, nodeIndex, D3Q19_C)] = pdfs[D3Q19_C];
203
204                 #define X(name, idx, idxinv, _x, _y, _z)        kd->PdfsActive[kdl->AdjList[adjListIndex + idxinv]] = pdfs[idx];
205                 D3Q19_LIST_WO_C
206                 #undef X
207
208         } else {
209
210                 #define I(x, y, z, dir) P_INDEX_5(KDL(kd), (x), (y), (z), (dir))
211                 #define X(name, idx, idxinv, _x, _y, _z)        kd->PdfsActive[I(x, y, z, idx)] = pdfs[idx];
212                 D3Q19_LIST
213                 #undef X
214                 #undef I
215
216         }
217
218         return;
219 }
220
221 static void ParameterUsage()
222 {
223         printf("Kernel parameters:\n");
224         printf("  [-blk <n>] [-blk-[xyz] <n>]\n");
225
226         return;
227 }
228
229 static void ParseParameters(Parameters * params, int * blk)
230 {
231         Assert(blk != NULL);
232
233         blk[0] = 0; blk[1] = 0; blk[2] = 0;
234
235         #define ARG_IS(param)                   (!strcmp(params->KernelArgs[i], param))
236         #define NEXT_ARG_PRESENT() \
237                 do { \
238                         if (i + 1 >= params->nKernelArgs) { \
239                                 printf("ERROR: argument %s requires a parameter.\n", params->KernelArgs[i]); \
240                                 exit(1); \
241                         } \
242                 } while (0)
243
244
245         for (int i = 0; i < params->nKernelArgs; ++i) {
246                 if (ARG_IS("-blk") || ARG_IS("--blk")) {
247                         NEXT_ARG_PRESENT();
248
249                         int tmp = strtol(params->KernelArgs[++i], NULL, 0);
250
251                         if (tmp <= 0) {
252                                 printf("ERROR: blocking parameter must be > 0.\n");
253                                 exit(1);
254                         }
255
256                         blk[0] = blk[1] = blk[2] = tmp;
257                 }
258                 else if (ARG_IS("-blk-x") || ARG_IS("--blk-x")) {
259                         NEXT_ARG_PRESENT();
260
261                         int tmp = strtol(params->KernelArgs[++i], NULL, 0);
262
263                         if (tmp <= 0) {
264                                 printf("ERROR: blocking parameter must be > 0.\n");
265                                 exit(1);
266                         }
267
268                         blk[0] = tmp;
269                 }
270                 else if (ARG_IS("-blk-y") || ARG_IS("--blk-y")) {
271                         NEXT_ARG_PRESENT();
272
273                         int tmp = strtol(params->KernelArgs[++i], NULL, 0);
274
275                         if (tmp <= 0) {
276                                 printf("ERROR: blocking parameter must be > 0.\n");
277                                 exit(1);
278                         }
279
280                         blk[1] = tmp;
281                 }
282                 else if (ARG_IS("-blk-z") || ARG_IS("--blk-z")) {
283                         NEXT_ARG_PRESENT();
284
285                         int tmp = strtol(params->KernelArgs[++i], NULL, 0);
286
287                         if (tmp <= 0) {
288                                 printf("ERROR: blocking parameter must be > 0.\n");
289                                 exit(1);
290                         }
291
292                         blk[2] = tmp;
293                 }
294                 else if (ARG_IS("-h") || ARG_IS("-help") || ARG_IS("--help")) {
295                         ParameterUsage();
296                         exit(1);
297                 }
298                 else {
299                         printf("ERROR: unknown kernel parameter.\n");
300                         ParameterUsage();
301                         exit(1);
302                 }
303         }
304
305         #undef ARG_IS
306         #undef NEXT_ARG_PRESENT
307
308         return;
309 }
310
311 void FNAME(D3Q19ListAaInit)(LatticeDesc * ld, KernelData ** kernelData, Parameters * params)
312 {
313         KernelData * kd;
314         KernelDataList * kdl;
315         MemAlloc((void **)&kdl, sizeof(KernelDataList));
316
317         kd = (KernelData *)kdl;
318         *kernelData = kd;
319
320 #ifdef DEBUG
321         kd->Pdfs[0] = NULL;
322         kd->Pdfs[1] = NULL;
323         kd->PdfsActive = NULL;
324         kd->DstPdfs = NULL;
325         kd->SrcPdfs = NULL;
326         kd->Dims[0] = -1;
327         kd->Dims[1] = -1;
328         kd->Dims[2] = -1;
329         kd->GlobalDims[0] = -1;
330         kd->GlobalDims[1] = -1;
331         kd->GlobalDims[2] = -1;
332         kd->Offsets[0] = -1;
333         kd->Offsets[1] = -1;
334         kd->Offsets[2] = -1;
335
336         kd->ObstIndices = NULL;
337         kd->nObstIndices = -1;
338         kd->BounceBackPdfsSrc = NULL;
339         kd->BounceBackPdfsDst = NULL;
340         kd->nBounceBackPdfs = -1;
341
342         kdl->AdjList = NULL;
343         kdl->Coords = NULL;
344         kdl->Grid = NULL;
345         kdl->nCells = -1;
346         kdl->nFluid = -1;
347 #endif
348
349         // Ajust the dimensions according to padding, if used.
350         kd->Dims[0] = kd->GlobalDims[0] = ld->Dims[0];
351         kd->Dims[1] = kd->GlobalDims[1] = ld->Dims[1];
352         kd->Dims[2] = kd->GlobalDims[2] = ld->Dims[2];
353
354         int * lDims = ld->Dims;
355
356         int lX = lDims[0];
357         int lY = lDims[1];
358         int lZ = lDims[2];
359
360         int nTotalCells = lX * lY * lZ;
361         int nCells = ld->nFluid; // TODO: + padding
362         int nFluid = ld->nFluid;
363
364         kdl->nCells = nCells;
365         kdl->nFluid = nFluid;
366
367         PdfT * pdfs[2];
368
369         int blk[3] = { 0 };
370
371         ParseParameters(params, blk);
372
373         if (blk[0] == 0) blk[0] = lX;
374         if (blk[1] == 0) blk[1] = lY;
375         if (blk[2] == 0) blk[2] = lZ;
376
377         printf("# blocking               x: %3d y: %3d z: %3d\n", blk[0], blk[1], blk[2]);
378
379         printf("# allocating data for %d fluid LB nodes with padding (%lu bytes = %f MiB for both lattices)\n",
380                 nCells, 2 * sizeof(PdfT) * nCells * N_D3Q19,
381                 2 * sizeof(PdfT) * nCells * N_D3Q19 / 1024.0 / 1024.0);
382
383         MemAlloc((void **)&pdfs[0], sizeof(PdfT) * nCells * N_D3Q19);
384
385         kd->Pdfs[0] = pdfs[0];
386
387         // Initialize PDFs with some (arbitrary) data for correct NUMA placement.
388         // Here we touch only the fluid nodes as this loop is OpenMP parallel and
389         // we want the same scheduling as in the kernel.
390         #ifdef _OPENMP
391                 #pragma omp parallel for
392         #endif
393         for (int i = 0; i < nFluid; ++i) { for(int d = 0; d < N_D3Q19; ++d) {
394                 pdfs[0][P_INDEX_3(nCells, i, d)] = 1.0;
395         } }
396
397         // Initialize all PDFs to some standard value.
398         for (int i = 0; i < nFluid; ++i) { for(int d = 0; d < N_D3Q19; ++d) {
399                 pdfs[0][P_INDEX_3(nCells, i, d)] = 0.0;
400         } }
401
402         // ----------------------------------------------------------------------
403         // create grid which will hold the index numbers of the fluid nodes
404
405         uint32_t * grid;
406
407         if (MemAlloc((void **)&grid, nTotalCells * sizeof(uint32_t))) {
408                 printf("ERROR: allocating grid for numbering failed: %lu bytes.\n", nTotalCells * sizeof(uint32_t));
409                 exit(1);
410         }
411         kdl->Grid = grid;
412
413         int latticeIndex;
414
415 #ifdef DEBUG
416         for(int z = 0; z < lZ; ++z) {
417                 for(int y = 0; y < lY; ++y) {
418                         for(int x = 0; x < lX; ++x) {
419
420                                 latticeIndex = L_INDEX_4(ld->Dims, x, y, z);
421
422                                 grid[latticeIndex] = ~0;
423                         }
424                 }
425         }
426 #endif
427
428         // ----------------------------------------------------------------------
429         // generate numbering over grid
430
431         uint32_t * coords;
432
433         if (MemAlloc((void **)&coords, nFluid * sizeof(uint32_t) * 3)) {
434                 printf("ERROR: allocating coords array failed: %lu bytes.\n", nFluid * sizeof(uint32_t) * 3);
435                 exit(1);
436         }
437
438         kdl->Coords = coords;
439
440         // Index for the PDF nodes can start at 0 as we distinguish solid and fluid nodes
441         // through the ld->Lattice array.
442         int counter = 0;
443
444         // Blocking is implemented via setup of the adjacency list. The kernel later will
445         // walk through the lattice blocked automatically.
446         for (int bZ = 0; bZ < lZ; bZ += blk[2]) {
447         for (int bY = 0; bY < lY; bY += blk[1]) {
448         for (int bX = 0; bX < lX; bX += blk[0]) {
449
450                 int eX = MIN(bX + blk[0], lX);
451                 int eY = MIN(bY + blk[1], lY);
452                 int eZ = MIN(bZ + blk[2], lZ);
453
454
455                 for (int z = bZ; z < eZ; ++z) {
456                 for (int y = bY; y < eY; ++y) {
457                 for (int x = bX; x < eX; ++x) {
458
459                         latticeIndex = L_INDEX_4(lDims, x, y, z);
460
461                         if (ld->Lattice[latticeIndex] != LAT_CELL_OBSTACLE) {
462                                 grid[latticeIndex] = counter;
463
464                                 coords[C_INDEX_X(counter)] = x;
465                                 coords[C_INDEX_Y(counter)] = y;
466                                 coords[C_INDEX_Z(counter)] = z;
467
468                                 ++counter;
469                         }
470                 } } }
471         } } }
472
473         Verify(counter == nFluid);
474
475         uint32_t * adjList;
476
477         // AdjList only requires 18 instead of 19 entries per node, as
478         // the center PDF needs no addressing.
479         if (MemAlloc((void **)&adjList, nFluid * sizeof(uint32_t) * N_D3Q19_IDX)) {
480                 printf("ERROR: allocating adjList array failed: %lu bytes.\n", nFluid * sizeof(uint32_t) * N_D3Q19_IDX);
481                 exit(1);
482         }
483
484         kdl->AdjList = adjList;
485
486         int x, y, z;
487
488         uint32_t neighborIndex;
489         uint32_t dstIndex;
490
491         int nx, ny, nz, px, py, pz;
492
493         // Loop over all fluid nodes and compute the indices to the neighboring
494         // PDFs for configure data layout (AoS/SoA).
495         // TODO: Parallelized loop to ensure correct NUMA placement.
496         // #ifdef _OPENMP --> add line continuation
497         //      #pragma omp parallel for default(none)
498         //              shared(nFluid, nCells, coords, D3Q19_INV, D3Q19_X, D3Q19_Y, D3Q19_Z,
499         //                              stderr,
500         //                              lDims, grid, ld, lX, lY, lZ, adjList)
501         //              private(x, y, z, nx, ny, nz, neighborIndex, dstIndex)
502         // #endif
503         for (int index = 0; index < nFluid; ++index) {
504                 x = coords[C_INDEX_X(index)];
505                 y = coords[C_INDEX_Y(index)];
506                 z = coords[C_INDEX_Z(index)];
507
508                 Assert(x >= 0 && x < lX);
509                 Assert(y >= 0 && y < lY);
510                 Assert(z >= 0 && z < lZ);
511
512                 Assert(ld->Lattice[L_INDEX_4(lDims, x, y, z)] != LAT_CELL_OBSTACLE);
513
514                 // Loop over all directions except the center one.
515                 for(int d = 0; d < N_D3Q19 - 1; ++d) {
516                         Assert(d != D3Q19_C);
517
518 #ifdef PROP_MODEL_PUSH
519                         nx = x + D3Q19_X[d];
520                         ny = y + D3Q19_Y[d];
521                         nz = z + D3Q19_Z[d];
522
523 #elif PROP_MODEL_PULL
524                         nx = x - D3Q19_X[d];
525                         ny = y - D3Q19_Y[d];
526                         nz = z - D3Q19_Z[d];
527 #else
528                         #error No implementation for this PROP_MODEL_NAME.
529 #endif
530                         // If the neighbor is outside the latcie in X direction and we have a
531                         // periodic boundary then we need to wrap around.
532                         if (    ((nx < 0 || nx >= lX) && ld->PeriodicX) ||
533                                         ((ny < 0 || ny >= lY) && ld->PeriodicY) ||
534                                         ((nz < 0 || nz >= lZ) && ld->PeriodicZ)
535                                                                                                                                 ){
536                                 // x periodic
537
538                                 if (nx < 0) {
539                                         px = lX - 1;
540                                 }
541                                 else if (nx >= lX) {
542                                         px = 0;
543                                 } else {
544                                         px = nx;
545                                 }
546                                 // y periodic
547                                 if (ny < 0) {
548                                         py = lY - 1;
549                                 }
550                                 else if (ny >= lY) {
551                                         py = 0;
552                                 } else {
553                                         py = ny;
554                                 }
555
556                                 // z periodic
557                                 if (nz < 0) {
558                                         pz = lZ - 1;
559                                 }
560                                 else if (nz >= lZ) {
561                                         pz = 0;
562                                 } else {
563                                         pz = nz;
564                                 }
565
566                                 if (ld->Lattice[L_INDEX_4(lDims, px, py, pz)] == LAT_CELL_OBSTACLE) {
567                                         dstIndex = P_INDEX_3(nCells, index, D3Q19_INV[d]);
568                                 }
569                                 else {
570                                         neighborIndex = grid[L_INDEX_4(lDims, px, py, pz)];
571
572                                         AssertMsg(neighborIndex != ~0, "Neighbor has no Index. (%d %d %d) direction %s (%d)\n", px, py, pz, D3Q19_NAMES[d], d);
573
574                                         dstIndex = P_INDEX_3(nCells, neighborIndex, d);
575                                 }
576                         }
577                         else if (nx < 0 || ny < 0 || nz < 0 || nx >= lX || ny >= lY || nz >= lZ) {
578                                 dstIndex = P_INDEX_3(nCells, index, D3Q19_INV[d]);
579                         }
580                         else if (ld->Lattice[L_INDEX_4(lDims, nx, ny, nz)] == LAT_CELL_OBSTACLE) {
581                                 dstIndex = P_INDEX_3(nCells, index, D3Q19_INV[d]);
582                         }
583                         else {
584                                 neighborIndex = grid[L_INDEX_4(lDims, nx, ny, nz)];
585
586                                 Assert(neighborIndex != ~0);
587
588                                 dstIndex = P_INDEX_3(nCells, neighborIndex, d);
589                         }
590
591                         Assert(dstIndex >= 0);
592                         Assert(dstIndex < nCells * N_D3Q19);
593
594                         adjList[index * N_D3Q19_IDX + d] = dstIndex;
595                 }
596         }
597
598
599         // Fill remaining KernelData structures
600         kd->GetNode = GetNode;
601         kd->SetNode = SetNode;
602
603         kd->BoundaryConditionsGetPdf = FNAME(BCGetPdf);
604         kd->BoundaryConditionsSetPdf = FNAME(BCSetPdf);
605
606         kd->Kernel = FNAME(D3Q19ListAaKernel);
607
608         kd->DstPdfs = NULL;
609         kd->PdfsActive = kd->Pdfs[0];
610
611         return;
612 }
613
614 void FNAME(D3Q19ListAaDeinit)(LatticeDesc * ld, KernelData ** kernelData)
615 {
616         KernelDataList ** kdl = (KernelDataList **)kernelData;
617
618         MemFree((void **)&((*kernelData)->Pdfs[0]));
619
620         MemFree((void **)&((*kdl)->AdjList));
621         MemFree((void **)&((*kdl)->Coords));
622         MemFree((void **)&((*kdl)->Grid));
623
624         MemFree((void **)kernelData);
625
626         return;
627 }
628
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