| 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 <stdio.h> |
| 28 | #include <stdlib.h> |
| 29 | #include <string.h> |
| 30 | #include <strings.h> // strcasecmp |
| 31 | |
| 32 | #include <inttypes.h> |
| 33 | |
| 34 | #ifdef _OPENMP |
| 35 | #include <omp.h> |
| 36 | #endif |
| 37 | |
| 38 | #include "Base.h" |
| 39 | #include "Kernel.h" |
| 40 | #include "Memory.h" |
| 41 | |
| 42 | #include "Lattice.h" |
| 43 | #include "Geometry.h" |
| 44 | #include "Pinning.h" |
| 45 | #include "LikwidIf.h" |
| 46 | |
| 47 | #include "KernelFunctions.h" |
| 48 | |
| 49 | #ifdef __x86_64__ |
| 50 | #include <xmmintrin.h> |
| 51 | |
| 52 | |
| 53 | #define MXCSR_DAZ 6 |
| 54 | #define MXCSR_FTZ 15 |
| 55 | |
| 56 | |
| 57 | int FpIsMxCsrMaskSet(unsigned int mask) |
| 58 | { |
| 59 | unsigned int mxcsr; |
| 60 | unsigned int mxcsrNew; |
| 61 | |
| 62 | mxcsr = _mm_getcsr(); |
| 63 | |
| 64 | mxcsrNew = mxcsr & mask; |
| 65 | |
| 66 | return (mxcsrNew == mask); |
| 67 | } |
| 68 | |
| 69 | int FpGetFtz() |
| 70 | { |
| 71 | return FpIsMxCsrMaskSet(1 << MXCSR_FTZ); |
| 72 | } |
| 73 | |
| 74 | int FpGetDaz() |
| 75 | { |
| 76 | return FpIsMxCsrMaskSet(1 << MXCSR_DAZ); |
| 77 | } |
| 78 | #endif |
| 79 | |
| 80 | |
| 81 | int ParseDimensions(const char * parameter, int * nX, int * nY, int * nZ) |
| 82 | { |
| 83 | char * tmp; |
| 84 | |
| 85 | *nX = atoi(parameter); |
| 86 | |
| 87 | if (*nX <= 0) { |
| 88 | printf("ERROR: parameter for X dimension must be > 0.\n"); |
| 89 | return 0; |
| 90 | } |
| 91 | |
| 92 | tmp = strchr(parameter, 'x'); |
| 93 | |
| 94 | if (tmp == NULL) { |
| 95 | printf("ERROR: parameter for Y dimension is missing.\n"); |
| 96 | return 0; |
| 97 | } |
| 98 | |
| 99 | *nY = atoi(tmp + 1); |
| 100 | |
| 101 | if (*nY <= 0) { |
| 102 | printf("ERROR: parameter for Y dimension must be > 0.\n"); |
| 103 | return 0; |
| 104 | } |
| 105 | |
| 106 | tmp = strchr(tmp + 1, 'x'); |
| 107 | |
| 108 | if (tmp == NULL) { |
| 109 | printf("ERROR: parameter for Z dimension is missing.\n"); |
| 110 | return 0; |
| 111 | } |
| 112 | |
| 113 | *nZ = atoi(tmp + 1); |
| 114 | |
| 115 | if (*nZ <= 0) { |
| 116 | printf("ERROR: parameter for Z dimension must be > 0.\n"); |
| 117 | return 0; |
| 118 | } |
| 119 | |
| 120 | return 1; |
| 121 | } |
| 122 | |
| 123 | int main(int argc, char * argv[]) |
| 124 | { |
| 125 | int dims[3] = { 20, 20, 20 }; // Dimensions in x, y, and z direction |
| 126 | const char * geometryType = "channel"; |
| 127 | // int latticeDumpAscii = 0; |
| 128 | int verify = 0; UNUSED(verify); |
| 129 | char * kernelToUse = NULL; |
| 130 | int nThreads = 1; |
| 131 | const char * pinString = NULL; |
| 132 | int periodic[3] = { 0 }; |
| 133 | |
| 134 | CaseData cd; |
| 135 | |
| 136 | cd.MaxIterations = 10; |
| 137 | cd.RhoIn = F(1.0); |
| 138 | cd.RhoOut = F(1.0); |
| 139 | cd.Omega = F(1.0); |
| 140 | cd.VtkOutput = 0; |
| 141 | cd.VtkModulus = 100; |
| 142 | cd.StatisticsModulus = 100; |
| 143 | cd.XForce = F(0.00001); |
| 144 | kernelToUse = "push-soa"; |
| 145 | |
| 146 | Parameters p; |
| 147 | p.nArgs = argc; |
| 148 | p.Args = argv; |
| 149 | p.nKernelArgs = 0; |
| 150 | p.KernelArgs = NULL; |
| 151 | |
| 152 | #define LBM_BENCH_KERNELS_VERSION_MAJOR 0 |
| 153 | #define LBM_BENCH_KERNELS_VERSION_MINOR 1 |
| 154 | |
| 155 | printf("Lattice Boltzmann Benchmark Kernels (LbmBenchKernels) Copyright (C) 2016, 2017 LSS, RRZE\n"); |
| 156 | printf("This program comes with ABSOLUTELY NO WARRANTY; for details see LICENSE.\n"); |
| 157 | printf("This is free software, and you are welcome to redistribute it under certain conditions.\n"); |
| 158 | printf("\n"); |
| 159 | printf("# LBM Benchmark Kernels %d.%d, compiled %s %s, type: %s\n", |
| 160 | LBM_BENCH_KERNELS_VERSION_MAJOR, LBM_BENCH_KERNELS_VERSION_MINOR, __DATE__, __TIME__, |
| 161 | #ifdef VERIFICATION |
| 162 | "verification" |
| 163 | #else |
| 164 | "benchmark" |
| 165 | #endif |
| 166 | ); |
| 167 | |
| 168 | // ---------------------------------------------------------------------- |
| 169 | // Parse command line arguments |
| 170 | |
| 171 | #define ARG_IS(param) (!strcmp(argv[i], param)) |
| 172 | #define NEXT_ARG_PRESENT() \ |
| 173 | do { \ |
| 174 | if (i + 1 >= argc) { \ |
| 175 | printf("ERROR: argument %s requires a parameter.\n", argv[i]); \ |
| 176 | return 1; \ |
| 177 | } \ |
| 178 | } while (0) |
| 179 | |
| 180 | for (int i = 1; i < argc; ++i) { |
| 181 | |
| 182 | if (ARG_IS("-dims") || ARG_IS("--dims")) { |
| 183 | NEXT_ARG_PRESENT(); |
| 184 | |
| 185 | |
| 186 | if (!ParseDimensions(argv[++i], &dims[0], &dims[1], &dims[2])) { |
| 187 | return 1; |
| 188 | } |
| 189 | } |
| 190 | // else if (ARG_IS("-lattice-dump-ascii") || ARG_IS("--lattice-dump-ascii")) { |
| 191 | // latticeDumpAscii = 1; |
| 192 | // } |
| 193 | else if (ARG_IS("-geometry") || ARG_IS("--geometry")) { |
| 194 | NEXT_ARG_PRESENT(); |
| 195 | |
| 196 | geometryType = argv[++i]; |
| 197 | } |
| 198 | else if (ARG_IS("-iterations") ||ARG_IS("--iterations")) { |
| 199 | NEXT_ARG_PRESENT(); |
| 200 | |
| 201 | cd.MaxIterations = strtol(argv[++i], NULL, 0); |
| 202 | |
| 203 | if (cd.MaxIterations <= 0) { |
| 204 | printf("ERROR: number of iterations must be > 0.\n"); |
| 205 | return 1; |
| 206 | } |
| 207 | } |
| 208 | else if (ARG_IS("-rho-in") ||ARG_IS("--rho-in")) { |
| 209 | NEXT_ARG_PRESENT(); |
| 210 | |
| 211 | cd.RhoIn = F(strtod(argv[++i], NULL)); |
| 212 | } |
| 213 | else if (ARG_IS("-rho-out") ||ARG_IS("--rho-out")) { |
| 214 | NEXT_ARG_PRESENT(); |
| 215 | |
| 216 | cd.RhoOut = F(strtod(argv[++i], NULL)); |
| 217 | } |
| 218 | else if (ARG_IS("-omega") ||ARG_IS("--omega")) { |
| 219 | NEXT_ARG_PRESENT(); |
| 220 | |
| 221 | cd.Omega = F(strtod(argv[++i], NULL)); |
| 222 | } |
| 223 | else if (ARG_IS("-x-force") ||ARG_IS("--x-force")) { |
| 224 | NEXT_ARG_PRESENT(); |
| 225 | |
| 226 | cd.XForce = F(strtod(argv[++i], NULL)); |
| 227 | } |
| 228 | else if (ARG_IS("-verify") || ARG_IS("--verify")) { |
| 229 | #ifdef VERIFICATION |
| 230 | |
| 231 | // Choose this preset for verification. As geometry type "box" is |
| 232 | // used but x and y direction are made periodic. |
| 233 | // Everything else can be altered, but enough iterations should be |
| 234 | // performed in order to receive a fully developed flow field. |
| 235 | verify = 1; |
| 236 | |
| 237 | cd.Omega = F(1.0); |
| 238 | cd.RhoIn = F(1.0); |
| 239 | cd.RhoOut = F(1.0); |
| 240 | geometryType = "box"; |
| 241 | dims[0] = 16; |
| 242 | dims[1] = 16; |
| 243 | dims[2] = 16; |
| 244 | cd.XForce = F(0.00001); |
| 245 | cd.MaxIterations = 1000; |
| 246 | periodic[0] = 1; |
| 247 | periodic[1] = 1; |
| 248 | periodic[2] = 0; |
| 249 | |
| 250 | printf("#\n"); |
| 251 | printf("# VERIFICATION: verifying flow profile of channel flow.\n"); |
| 252 | printf("#\n"); |
| 253 | |
| 254 | // TODO: this is not a good idea as we ignore all other options... |
| 255 | |
| 256 | #else |
| 257 | printf("ERROR: in order to use -verify VERIFICATION must be defined during compilation.\n"); |
| 258 | printf(" Recompile with VERIFICATION=on.\n"); |
| 259 | return 1; |
| 260 | #endif |
| 261 | } |
| 262 | else if (ARG_IS("-vtk") || ARG_IS("--vtk")) { |
| 263 | #ifdef VTK_OUTPUT |
| 264 | |
| 265 | cd.VtkOutput = 1; |
| 266 | |
| 267 | // If the next parameter is a number it is used as the itartion count, |
| 268 | // if not it is probably another parameter. |
| 269 | if (i + 1 < argc) { |
| 270 | |
| 271 | int vtkModulus = atoi(argv[i+1]); |
| 272 | |
| 273 | if (vtkModulus > 0) { |
| 274 | cd.VtkModulus = vtkModulus; |
| 275 | ++i; |
| 276 | } |
| 277 | } |
| 278 | #else |
| 279 | printf("ERROR: in order to use -vtk VTK_OUTPUT must be defined during compilation.\n"); |
| 280 | printf(" Recompile with VTK_OUTPUT=on.\n"); |
| 281 | return 1; |
| 282 | #endif |
| 283 | } |
| 284 | else if (ARG_IS("-statistics") || ARG_IS("--statistics")) { |
| 285 | #ifdef STATISTICS |
| 286 | NEXT_ARG_PRESENT(); |
| 287 | |
| 288 | cd.StatisticsModulus = atoi(argv[++i]); |
| 289 | |
| 290 | if (cd.StatisticsModulus <= 0) { |
| 291 | printf("ERROR: the iteration count for -statistics must be > 0.\n"); |
| 292 | return 1; |
| 293 | } |
| 294 | #else |
| 295 | printf("ERROR: in order to use -statistics STATISTICS must be defined during compilation.\n"); |
| 296 | printf(" Recompile with STATISTICS=on.\n"); |
| 297 | return 1; |
| 298 | #endif |
| 299 | } |
| 300 | else if (ARG_IS("-kernel") || ARG_IS("--kernel")) { |
| 301 | NEXT_ARG_PRESENT(); |
| 302 | |
| 303 | kernelToUse = argv[++i]; |
| 304 | } |
| 305 | else if (ARG_IS("-list") || ARG_IS("--list")) { |
| 306 | printf("Available kernels to benchmark:\n"); |
| 307 | |
| 308 | for (int j = 0; j < N_ELEMS(g_kernels); ++j) { |
| 309 | printf(" %s\n", g_kernels[j].Name); |
| 310 | } |
| 311 | |
| 312 | return 0; |
| 313 | } |
| 314 | else if (ARG_IS("-pin") || ARG_IS("--pin")) { |
| 315 | NEXT_ARG_PRESENT(); |
| 316 | |
| 317 | pinString = argv[++i]; |
| 318 | } |
| 319 | else if (ARG_IS("-t") || ARG_IS("-threads") || ARG_IS("--threads")) { |
| 320 | #ifdef _OPENMP |
| 321 | NEXT_ARG_PRESENT(); |
| 322 | |
| 323 | nThreads = atoi(argv[++i]); |
| 324 | |
| 325 | if (nThreads <= 0) { |
| 326 | printf("ERROR: number of threads must be > 0.\n"); |
| 327 | return 1; |
| 328 | } |
| 329 | #else |
| 330 | printf("ERROR: specifying number of threads is only available when compiled with OpenMP support.\n"); |
| 331 | return 1; |
| 332 | #endif |
| 333 | } |
| 334 | else if (ARG_IS("-periodic-x") || ARG_IS("--periodic-x")) { |
| 335 | periodic[0] = 1; |
| 336 | } |
| 337 | else if (ARG_IS("-periodic-y") || ARG_IS("--periodic-y")) { |
| 338 | periodic[1] = 1; |
| 339 | } |
| 340 | else if (ARG_IS("-periodic-z") || ARG_IS("--periodic-z")) { |
| 341 | periodic[2] = 1; |
| 342 | } |
| 343 | else if (ARG_IS("-h") || ARG_IS("-help") || ARG_IS("--help")) { |
| 344 | printf("ERROR: unknown argument: %s\n", argv[i]); |
| 345 | printf("\n"); |
| 346 | printf("Usage:\n"); |
| 347 | printf("./lbmbenchk -list\n"); |
| 348 | printf("./lbmbenchk \n"); |
| 349 | printf(" [-dims XxYyZ] [-geometry box|channel|pipe|porosity[-value]] [-iterations <iterations>] [-lattice-dump-ascii]\n"); |
| 350 | printf(" [-rho-in <density>] [-rho-out <density] [-omega <omega>] [-kernel <kernel>]\n"); |
| 351 | printf(" [-periodic-x]\n"); |
| 352 | #ifdef STATISTICS |
| 353 | printf(" [-statistics <every-n-iteration>]\n"); |
| 354 | #endif |
| 355 | #ifdef VTK_OUTPUT |
| 356 | printf(" [-vtk [<every-n-iteration>]]\n"); |
| 357 | #endif |
| 358 | #ifdef _OPENMP |
| 359 | printf(" [-t <number of threads>]\n"); |
| 360 | #endif |
| 361 | printf(" [-pin core{,core}*]\n"); |
| 362 | #ifdef VERIFICATION |
| 363 | printf(" [-verify]\n"); |
| 364 | #endif |
| 365 | printf(" -- <kernel specific parameters>\n"); |
| 366 | printf("\n"); |
| 367 | printf("-list List available kernels.\n"); |
| 368 | printf("\n"); |
| 369 | printf("-dims XxYxZ Specify geometry dimensions.\n"); |
| 370 | printf("\n"); |
| 371 | printf("-geometry porosity-<value>\n"); |
| 372 | printf(" Geometetry with blocks of size <value> regularily layout out.\n"); |
| 373 | printf("\n"); |
| 374 | return 1; |
| 375 | } |
| 376 | else if (ARG_IS("--")) { |
| 377 | // printf("# kernel args start with %s these are %d args.\n", argv[i + 1], argc - i - 1); |
| 378 | p.KernelArgs = &argv[++i]; |
| 379 | p.nKernelArgs = argc - i; |
| 380 | break; |
| 381 | } |
| 382 | else { |
| 383 | printf("ERROR: unknown parameter: %s.\n", argv[i]); |
| 384 | exit(1); |
| 385 | } |
| 386 | } |
| 387 | |
| 388 | #undef ARG_IS |
| 389 | #undef NEXT_ARG_PRESENT |
| 390 | |
| 391 | |
| 392 | // ---------------------------------------------------------------------- |
| 393 | // Check if we exceed our index addressing PDFs. |
| 394 | |
| 395 | { |
| 396 | uint64_t nPdfs = ((uint64_t)19) * dims[0] * dims[1] * dims[2]; |
| 397 | |
| 398 | if (nPdfs > ((2LU << 31) - 1)) { |
| 399 | printf("ERROR: number of PDFs exceed 2^31.\n"); |
| 400 | exit(1); |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | // ---------------------------------------------------------------------- |
| 405 | |
| 406 | #ifdef _OPENMP |
| 407 | omp_set_num_threads(nThreads); |
| 408 | #endif |
| 409 | |
| 410 | const char * defines[] = { |
| 411 | #ifdef DEBUG |
| 412 | "DEBUG", |
| 413 | #endif |
| 414 | #ifdef VTK_OUTPUT |
| 415 | "VTK_OUTPUT", |
| 416 | #endif |
| 417 | #ifdef STATISTICS |
| 418 | "STATISTICS", |
| 419 | #endif |
| 420 | #ifdef VERIFICATION |
| 421 | "VERIFICATION", |
| 422 | #endif |
| 423 | #ifdef _OPENMP |
| 424 | "_OPENMP", |
| 425 | #endif |
| 426 | #ifdef HAVE_LIKWID |
| 427 | "HAVE_LIKWID", |
| 428 | #endif |
| 429 | #ifdef INTEL_OPT_DIRECTIVES |
| 430 | "INTEL_OPT_DIRECTIVES", |
| 431 | #endif |
| 432 | }; |
| 433 | |
| 434 | printf("#\n"); |
| 435 | |
| 436 | #ifdef PRECISION_DP |
| 437 | printf("# - floating point: double precision (%lu b, PRECISION_DP defined)\n", sizeof(PdfT)); |
| 438 | #elif defined(PRECISION_SP) |
| 439 | printf("# - floating point: single precision (%lu b, PRECISION_SP defined)\n", sizeof(PdfT)); |
| 440 | #else |
| 441 | printf("# - floating point: UNKNOWN (%lu b)\n", sizeof(PdfT)); |
| 442 | #endif |
| 443 | |
| 444 | #ifdef VECTOR_AVX |
| 445 | printf("# - intrinsics: AVX (VECTOR_AVX defined)\n"); |
| 446 | #elif defined(VECTOR_SSE) |
| 447 | printf("# - intrinsics: SSE (VECTOR_SSE defined)\n"); |
| 448 | #else |
| 449 | printf("# - intrinsics: UNKNOWN\n"); |
| 450 | #endif |
| 451 | |
| 452 | printf("# - defines: "); |
| 453 | for (int j = 0; j < N_ELEMS(defines); ++j) { |
| 454 | printf("%s ", defines[j]); |
| 455 | } |
| 456 | printf("\n"); |
| 457 | |
| 458 | #ifdef __x86_64__ |
| 459 | printf("# - fp status: DAZ: %d FTZ: %d\n", FpGetDaz(), FpGetFtz()); |
| 460 | #endif |
| 461 | |
| 462 | printf("# - iterations: %d\n", cd.MaxIterations); |
| 463 | |
| 464 | LatticeDesc ld; |
| 465 | |
| 466 | GeoCreateByStr(geometryType, dims, periodic, &ld); |
| 467 | |
| 468 | printf("# - geometry:\n"); |
| 469 | printf("# type: %s\n", ld.Name); |
| 470 | printf("# dimensions: %d x %d x %d (x, y, z)\n", ld.Dims[0], ld.Dims[1], ld.Dims[2]); |
| 471 | |
| 472 | printf("# nodes total: %d\n", ld.nObst + ld.nFluid); |
| 473 | printf("# nodes fluid: %d (including inlet & outlet)\n", ld.nFluid); |
| 474 | printf("# nodes obstacles: %d\n", ld.nObst); |
| 475 | printf("# nodes inlet: %d\n", ld.nInlet); |
| 476 | printf("# nodes outlet: %d\n", ld.nOutlet); |
| 477 | printf("# periodicity: x: %d y: %d z: %d\n", ld.PeriodicX, ld.PeriodicY, ld.PeriodicZ); |
| 478 | |
| 479 | #ifdef VTK_OUTPUT |
| 480 | printf("# - VTK output: %d (every %d iteration)\n", cd.VtkOutput, cd.VtkModulus); |
| 481 | #endif |
| 482 | #ifdef STATISTICS |
| 483 | printf("# - statistics: every %d iteration\n", cd.StatisticsModulus); |
| 484 | #endif |
| 485 | |
| 486 | printf("# - flow:\n"); |
| 487 | printf("# omega: %f\n", cd.Omega); |
| 488 | printf("# initial density at inlet/outlet:\n"); |
| 489 | printf("# rho in: %e\n", cd.RhoIn); |
| 490 | printf("# rho out: %e\n", cd.RhoOut); |
| 491 | |
| 492 | #ifdef _OPENMP |
| 493 | printf("# - OpenMP threads: %d\n", omp_get_max_threads()); |
| 494 | |
| 495 | if (pinString != NULL) { |
| 496 | #pragma omp parallel |
| 497 | { |
| 498 | int threadId = omp_get_thread_num(); |
| 499 | int err; |
| 500 | |
| 501 | err = PinCurrentThreadByCpuList(pinString, threadId); |
| 502 | |
| 503 | if (err) { |
| 504 | printf("ERROR [thread %d]: pinning failed.\n", threadId); |
| 505 | exit(1); |
| 506 | } |
| 507 | |
| 508 | const char * cpuList = PinCpuListAsString(); |
| 509 | Assert(cpuList != NULL); |
| 510 | |
| 511 | // Not so nice hack to print the thread ids ordered. |
| 512 | #pragma omp for ordered |
| 513 | for (int i = 0; i < omp_get_num_threads(); ++i) { |
| 514 | #pragma omp ordered |
| 515 | printf("# thread %2d pinned to core(s): %s\n", threadId, cpuList); |
| 516 | } |
| 517 | |
| 518 | free((void *)cpuList); |
| 519 | } |
| 520 | } |
| 521 | #endif |
| 522 | |
| 523 | KernelData * kd; |
| 524 | |
| 525 | KernelFunctions * kf = NULL; |
| 526 | |
| 527 | if (kernelToUse == NULL) { |
| 528 | kf = &g_kernels[0]; |
| 529 | } |
| 530 | else { |
| 531 | for (int j = 0; j < N_ELEMS(g_kernels); ++j) { |
| 532 | |
| 533 | if (!strcasecmp(kernelToUse, g_kernels[j].Name)) { |
| 534 | kf = &g_kernels[j]; |
| 535 | break; |
| 536 | } |
| 537 | } |
| 538 | } |
| 539 | |
| 540 | if (kf == NULL) { |
| 541 | printf("ERROR: requested kernel \"%s\" not found.\n", kernelToUse); |
| 542 | exit(1); |
| 543 | } |
| 544 | |
| 545 | printf("#\n"); |
| 546 | printf("# - kernel: %s\n", kf->Name); |
| 547 | printf("#\n"); |
| 548 | |
| 549 | // Initialize kernel by calling its own initialization function |
| 550 | kf->Init(&ld, &kd, &p); |
| 551 | |
| 552 | #ifdef VERIFICATION |
| 553 | if (verify) { |
| 554 | KernelSetInitialDensity( &ld, kd, &cd); |
| 555 | KernelSetInitialVelocity(&ld, kd, &cd); |
| 556 | } |
| 557 | #endif |
| 558 | |
| 559 | printf("# starting kernel...\n"); |
| 560 | |
| 561 | X_LIKWID_INIT(); |
| 562 | |
| 563 | double timeStart = Time(); |
| 564 | |
| 565 | // Call the LBM kernel |
| 566 | kd->Kernel(&ld, kd, &cd); |
| 567 | |
| 568 | double duration = Time() - timeStart; |
| 569 | |
| 570 | X_LIKWID_DEINIT(); |
| 571 | |
| 572 | // Print some statistics... |
| 573 | KernelStatisticsAdv(kd, &ld, &cd, cd.MaxIterations, 1 /* force output */); |
| 574 | |
| 575 | #ifdef VERIFICATION |
| 576 | PdfT errorNorm = -1.0; |
| 577 | KernelVerifiy(&ld, kd, &cd, &errorNorm); |
| 578 | #endif |
| 579 | |
| 580 | // Deinitialize kernel by calling its own deinitialization function |
| 581 | kf->Deinit(&ld, &kd); |
| 582 | |
| 583 | |
| 584 | double perf = (double)ld.nFluid * (double)cd.MaxIterations / duration / 1.e6; |
| 585 | |
| 586 | printf("P: %f MFLUP/s t: %d d: %f s iter: %d fnodes: %f x1e6 geo: %s kernel: %s %s %s\n", |
| 587 | perf, nThreads, duration, cd.MaxIterations, ld.nFluid / 1e6, |
| 588 | geometryType, kernelToUse, |
| 589 | #ifdef VERIFICATION |
| 590 | "VERIFICATION", |
| 591 | #else |
| 592 | "B", |
| 593 | #endif |
| 594 | #ifdef PRECISION_DP |
| 595 | "dp" |
| 596 | #elif defined(PRECISION_SP) |
| 597 | "sp" |
| 598 | #else |
| 599 | "unknown-precision" |
| 600 | #endif |
| 601 | ); |
| 602 | |
| 603 | int exitCode = 0; |
| 604 | |
| 605 | #ifdef VERIFICATION |
| 606 | |
| 607 | if (verify) { |
| 608 | printf("# VERIFICATION: deviation from analytical solution: %e\n", errorNorm); |
| 609 | |
| 610 | if (errorNorm > 0.1) { |
| 611 | printf("# VERIFICATION FAILED.\n"); |
| 612 | exitCode = 1; |
| 613 | } |
| 614 | else { |
| 615 | printf("# VERIFICATION SUCCEEDED.\n"); |
| 616 | } |
| 617 | } |
| 618 | #else |
| 619 | // printf("# VERIFICATION: deviation from analytical solution: %e\n", errorNorm); |
| 620 | // printf("# VERIFICATION: this is only valid for pipe geometry with enough iterations performed.\n"); |
| 621 | #endif |
| 622 | |
| 623 | MemFree((void **)&ld.Lattice); |
| 624 | |
| 625 | return exitCode; |
| 626 | } |