6 #include <unistd.h> // getopt
9 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(main);
11 #include "deployment.h"
13 #include "loba_2besteffort.h"
14 #include "loba_besteffort.h"
15 #include "loba_bulk.h"
16 #include "loba_fairstrategy.h"
18 #include "loba_makhoul.h"
19 #include "loba_makhoul2.h"
20 #include "loba_makhoul3.h"
21 #include "loba_simple.h"
26 #define DATA_DESCR_WIDTH 42
32 // A sum of loads if considered null if it is less than
33 // load_ratio_threshold percent of the sum of loads at init.
34 const double load_ratio_threshold = 1e-4;
37 std::string program_name;
38 int help_requested = 0;
39 bool version_requested = false;
40 int option_x = 0; // hidden option (int)
41 double option_X = 0.0; // hidden option (double)
43 // Simulation parameters
45 volatile std::sig_atomic_t exit_request = 0;
47 // Platform and deployment
48 std::string platform_file;
49 std::string deployment_file;
51 // Automatic deployment
54 std::string topology("clique");
57 bool random_distribution = false;
58 unsigned long random_seed = 0;
61 // Load balancing algorithm
62 std::string loba_algo("simple");
63 bool bookkeeping = false;
64 bool egocentric = false;
65 double min_lb_iter_duration = 1.0; // fixme: find better defaults
66 double min_transfer_amount = 0.0;
67 double max_transfer_amount = 0.0;
68 bool integer_transfer = false;
69 unsigned loba_best_divisor = 1;
71 // Application parameters
72 cost_func comp_cost("1e9, 0"); // fixme: find better defaults
73 cost_func comm_cost("1e6, 0"); // fixme: find better defaults
74 double min_comp_iter_duration = 1.0; // fixme: find better defaults
75 unsigned comp_iter_delay = 0; // fixme: find better defaults
76 double comp_time_delay = 0.0; // fixme: find better defaults
78 // Parameters for the end of the simulation
79 double avg_load_ratio = 0.0;
80 unsigned lb_maxiter = 0;
81 unsigned comp_maxiter = 0;
82 double time_limit = 0;
83 unsigned exit_on_convergence = 0;
84 bool exit_on_close = true;
86 // Named parameters lists
87 loba_algorithms_type loba_algorithms;
88 loba_algorithms_type::loba_algorithms_type()
90 NOL_INSERT("2besteffort", "balance with best effort strategy (take #2)",
92 NOL_INSERT("besteffort", "balance with best effort strategy",
94 NOL_INSERT("bulk", "a multi-load-units assignation rule without ordering...",
96 NOL_INSERT("fairstrategy", "balance with fair strategy",
98 NOL_INSERT("lln", "balance with less loaded neighbors without ordering-bulk method",
100 NOL_INSERT("makhoul", "balance with Makhoul's PhD algorithm",
102 NOL_INSERT("makhoul2", "balance with Makhoul's source code",
104 NOL_INSERT("makhoul3", "variation on Makhoul's algorithm",
106 NOL_INSERT("none", "no load-balancing (for testing only)",
108 NOL_INSERT("simple", "balance with least loaded neighbor",
112 topologies_type topologies;
113 topologies_type::topologies_type()
115 NOL_INSERT("btree", "binary tree topology, initial load at root",
117 NOL_INSERT("clique", "all connected topology", deployment_clique);
118 NOL_INSERT("hcube", "hypercube topology", deployment_hcube);
119 NOL_INSERT("line", "line topology, initial load at one end",
121 NOL_INSERT("ring", "ring topology", deployment_ring);
122 NOL_INSERT("star", "star topology, initial load at center",
124 NOL_INSERT("torus", "torus topology", deployment_torus);
131 // local helper class
134 template <typename T>
135 static bool parse_arg(char opt, const char *arg, T& val);
136 static const char* on_off(bool b);
137 const char* descr(const char* str);
138 template <typename T>
139 const char* val_or_string(const T& val, const char* str,
141 template <typename T>
142 static bool nol_find_prefix(const T& nol, const char* descr,
146 std::string descr_str;
147 std::string val_or_string_str;
152 template <typename T>
153 bool opt_helper::parse_arg(char opt, const char *arg, T& val)
155 std::istringstream str(arg);
156 bool result = (str >> val) && str.eof();
158 XBT_ERROR("invalid argument for option '-%c' -- \"%s\"", opt, arg);
162 const char* opt_helper::on_off(bool b)
164 return b ? "on" : "off";
167 const char* opt_helper::descr(const char* str)
170 descr_str.push_back(' ');
171 descr_str.resize(DATA_DESCR_WIDTH, '.');
172 return descr_str.c_str();
175 template <typename T>
176 const char* opt_helper::val_or_string(const T& val, const char* str,
180 std::ostringstream oss;
182 val_or_string_str = oss.str();
184 val_or_string_str = str;
186 return val_or_string_str.c_str();
189 template <typename T>
190 bool opt_helper::nol_find_prefix(const T& nol, const char* descr,
193 bool result = nol.exists(name);
195 std::stack<std::string> candidates;
196 for (typename T::iterator it = nol.begin() ; it != nol.end() ; ++it) {
197 const std::string& fullname = nol.get_name(it);
198 if (fullname.compare(0, name.length(), name) == 0)
199 candidates.push(fullname);
201 switch (candidates.size()) {
203 XBT_ERROR("unknownw %s -- %s", descr, name.c_str());
206 name = candidates.top();
209 XBT_DEBUG("infered %s -- %s", descr, name.c_str());
212 XBT_ERROR("ambiguous %s -- %s", descr, name.c_str());
213 while (!candidates.empty()) {
214 XBT_ERROR(" candidates are -- %s", candidates.top().c_str());
223 bool opt::parse_args(int* argc, char* argv[])
227 opt::program_name = argv[0];
228 opt::program_name.erase(0, 1 + opt::program_name.find_last_of('/'));
230 #define PARSE_ARG(x) result = opt_helper::parse_arg(c, optarg, (x)) && result
234 while ((c = getopt(*argc, argv,
236 "a:bc:C:d:D:eEg:hi:I:k:l:L:m:M:N:r:Rs:S:t:T:vVx:X:Z"))
240 PARSE_ARG(opt::avg_load_ratio);
243 opt::loba_algo = optarg;
244 result = opt_helper::nol_find_prefix(opt::loba_algorithms,
245 "load balancing algorithm",
250 opt::bookkeeping = !opt::bookkeeping;
254 opt::comp_cost = cost_func(optarg);
256 XBT_ERROR("invalid argument for option '-%c' -- \"%s\"",
263 opt::comm_cost = cost_func(optarg);
265 XBT_ERROR("invalid argument for option '-%c' -- \"%s\"",
271 PARSE_ARG(opt::comp_iter_delay);
274 PARSE_ARG(opt::comp_time_delay);
277 opt::exit_on_close = !opt::exit_on_close;
280 opt::egocentric = !opt::egocentric;
283 PARSE_ARG(opt::exit_on_convergence);
286 opt::help_requested++;
289 PARSE_ARG(opt::lb_maxiter);
292 PARSE_ARG(opt::loba_best_divisor);
295 PARSE_ARG(opt::comp_maxiter);
298 PARSE_ARG(opt::log_rate);
301 PARSE_ARG(opt::auto_depl::load);
304 PARSE_ARG(opt::min_transfer_amount);
307 PARSE_ARG(opt::max_transfer_amount);
310 PARSE_ARG(opt::auto_depl::nhosts);
313 PARSE_ARG(opt::auto_depl::random_seed);
316 opt::auto_depl::random_distribution =
317 !opt::auto_depl::random_distribution;
320 PARSE_ARG(opt::min_lb_iter_duration);
323 PARSE_ARG(opt::min_comp_iter_duration);
326 PARSE_ARG(opt::time_limit);
329 opt::auto_depl::topology = optarg;
330 result = opt_helper::nol_find_prefix(opt::topologies, "topology",
331 opt::auto_depl::topology)
335 // nothing to do: this option is checked at the very
336 // beginning of main()
339 opt::version_requested = true;
342 PARSE_ARG(opt::option_x);
343 XBT_WARN("option_x set to %d", opt::option_x);
346 PARSE_ARG(opt::option_X);
347 XBT_WARN("option_X set to %g", opt::option_X);
350 opt::integer_transfer = !opt::integer_transfer;
353 XBT_ERROR("invalid option -- '%c'", optopt);
361 if (opt::version_requested || opt::help_requested)
364 if (optind < *argc) {
365 opt::platform_file = argv[optind++];
367 XBT_ERROR("missing parameter -- <plaform_file>");
370 if (optind < *argc) {
371 opt::deployment_file = argv[optind++];
373 opt::auto_depl::enabled = opt::deployment_file.empty();
375 while (optind < *argc) {
376 XBT_ERROR("unused parameter -- \"%s\"", argv[optind++]);
380 if (opt::max_transfer_amount &&
381 opt::max_transfer_amount < opt::min_transfer_amount) {
382 XBT_ERROR("max. data transfer amount (%g) <"
383 " min. data transfer amount (%g)",
384 opt::max_transfer_amount, opt::min_transfer_amount);
388 if (opt::loba_best_divisor <= 0) {
389 XBT_ERROR("divisor for algorithms *best* (%u) should be positive",
390 opt::loba_best_divisor);
394 if (!opt::auto_depl::random_seed)
395 opt::auto_depl::random_seed = time(NULL);
404 #define DESCR(description, format, value) \
405 XBT_INFO("| %s: " format, h.descr(description), value)
407 XBT_INFO(",----[ Simulation parameters ]");
408 DESCR("log rate", "%s", h.val_or_string(log_rate, "disabled"));
409 DESCR("platform file", "\"%s\"", platform_file.c_str());
410 if (auto_depl::enabled) {
411 XBT_INFO("| automatic deployment enabled");
412 DESCR("- topology", "%s", auto_depl::topology.c_str());
413 DESCR("- number of hosts", "%s", h.val_or_string(auto_depl::nhosts,
415 if (auto_depl::load < 0.0)
416 DESCR("- initial load (average)", "%g", -auto_depl::load);
418 DESCR("- initial load (total)", "%g", auto_depl::load);
419 DESCR("- random initial load distribution", "%s",
420 h.on_off(auto_depl::random_distribution));
421 DESCR("- random seed", "%s", // NOTE: cannot be 0 here anymore
422 h.val_or_string(auto_depl::random_seed, "constant random", 1UL));
424 DESCR("deployment file", "\"%s\"", deployment_file.c_str());
426 DESCR("load balancing algorithm", "%s", loba_algo.c_str());
427 DESCR("bookkeeping", "%s", h.on_off(bookkeeping));
428 DESCR("egocentric mode", "%s", h.on_off(egocentric));
429 DESCR("computation cost factors", "[%s]", comp_cost.to_string().c_str());
430 DESCR("communication cost factors", "[%s]", comm_cost.to_string().c_str());
431 DESCR("minimum data transfer amount", "%g", min_transfer_amount);
432 DESCR("maximum data transfer amount", "%s",
433 h.val_or_string(max_transfer_amount, "no limit"));
434 DESCR("only transfer integer data shares", "%s",
435 h.on_off(integer_transfer));
436 DESCR("divisor for algorithms *best*", "%u", loba_best_divisor);
437 DESCR("minimum duration between lb. iterations", "%g",
438 min_lb_iter_duration);
439 DESCR("minimum duration between comp. iterations", "%g",
440 min_comp_iter_duration);
441 DESCR("computations start after lb. iter", "%u", comp_iter_delay);
442 DESCR("computations start after time", "%g", comp_time_delay);
443 DESCR("maximum number of lb. iterations", "%s",
444 h.val_or_string(lb_maxiter, "no limit"));
445 DESCR("maximum number of comp. iterations", "%s",
446 h.val_or_string(comp_maxiter, "no limit"));
447 DESCR("convergence is assumed within (\%)", "%g", opt::avg_load_ratio);
448 DESCR("time limit", "%s", h.val_or_string(time_limit, "no limit"));
449 DESCR("exit on convergence", "%s",
450 h.val_or_string(exit_on_convergence, "disabled"));
451 DESCR("exit on close", "%s", h.on_off(exit_on_close));
460 #define o(opt) " " << std::setw(14) \
461 << std::left << (opt) << std::right << " "
463 #define so(subopt) std::setw(18) << (subopt) << " : "
465 #define so_list(name) do { \
466 name ## _type::iterator it; \
467 for (it = name.begin() ; it != name.end() ; ++it) \
468 std::clog << so(name.get_name(it)) \
469 << name.get_descr(it) << "\n"; \
473 std::clog << "Usage: " << opt::program_name
474 << " [options] <platform_file> [<deployment_file>]\n";
475 std::clog << "Current values for the parameters are given between square brackets.\n";
477 std::clog << "\nGlobal options:\n";
479 << "print help and exit (use -hh or -hhh for extended help)\n";
480 if (opt::help_requested < 1)
483 std::clog << o("--help") << "print help from SimGrid framework and exit\n";
484 std::clog << o("-V") << "print version and exit\n";
486 std::clog << "\nSimulator output:\n";
487 std::clog << o("-l value")
488 << "print current load every n lb iterations, 0 to disable"
489 << " [" << opt::log_rate << "]\n";
491 << "verbose: do not override the default logging parameters\n";
493 std::clog << "\nAutomatic deployment:\n";
494 std::clog << o("-T name")
495 << "enable automatic deployment with selected topology"
496 << " [" << opt::auto_depl::topology << "]\n";
497 if (opt::help_requested > 1)
498 so_list(opt::topologies);
499 std::clog << o("-L value")
500 << "total load with auto deployment, average if negative"
501 << " [" << opt::auto_depl::load << "]\n";
502 std::clog << o("-N value")
503 << "number of hosts to use with auto deployment, 0 for max."
504 << " [" << opt::auto_depl::nhosts << "]\n";
506 << "toggle random initial load distribution"
507 << " [" << opt_helper::on_off(opt::auto_depl::random_distribution)
509 std::clog << o("-r value")
510 << "random seed for initial load distribution, or 0, or 1"
511 << " [" << opt::auto_depl::random_seed << "]\n";
512 if (opt::help_requested > 1)
513 std::clog << o("") << "- use 0 for a seed based on current date\n"
514 << o("") << "- use 1 for a constant random\n";
516 std::clog << "\nLoad balancing algorithm:\n";
517 std::clog << o("-a name") << "load balancing algorithm"
518 << " [" << opt::loba_algo << "]\n";
519 if (opt::help_requested > 1)
520 so_list(opt::loba_algorithms);
521 std::clog << o("-b") << "toggle bookkeeping (\"virtual load\")"
522 << " [" << opt_helper::on_off(opt::bookkeeping) << "]\n";
523 std::clog << o("-E") << "toggle egocentric mode when bookkeeping"
524 << " [" << opt_helper::on_off(opt::egocentric) << "]\n";
525 if (opt::help_requested > 1)
527 << "(a not so good idea introduced by git commit f5336c5)\n";
528 std::clog << o("-k value") << "divisor for algorithms *best*"
529 << " [" << opt::loba_best_divisor << "]\n";
531 std::clog << "\nLb. and comp. iterations:\n";
532 std::clog << o("-s value")
533 << "minimum duration between lb. iterations"
534 << " [" << opt::min_lb_iter_duration << "]\n";
535 std::clog << o("-S value")
536 << "minimum duration between comp. iterations"
537 << " [" << opt::min_comp_iter_duration << "]\n";
538 std::clog << o("-d value")
539 << "start comp. iterations after given number of lb. iter."
540 << " [" << opt::comp_iter_delay << "]\n";
541 std::clog << o("-D value")
542 << "start comp. iterations after given time"
543 << " [" << opt::comp_time_delay << "]\n";
545 std::clog << "\nComputations and communications:\n";
546 std::clog << o("-c [aN,...]a0")
547 << "polynomial factors for computation cost"
548 << " [" << opt::comp_cost.to_string() << "]\n";
549 std::clog << o("-C [aN,...]a0")
550 << "polynomial factors for communication cost"
551 << " [" << opt::comm_cost.to_string() << "]\n";
552 std::clog << o("-m value")
553 << "minimum data transfer amount"
554 << " [" << opt::min_transfer_amount << "]\n";
555 std::clog << o("-M value")
556 << "maximum data transfer amount, 0 for no limit"
557 << " [" << opt::max_transfer_amount << "]\n";
559 << "toggle transfer of integer data shares only"
560 << " [" << opt_helper::on_off(opt::integer_transfer) << "]\n";
562 std::clog << "\nEnd of the simulation:\n";
563 std::clog << o("-i value")
564 << "maximum number of lb. iterations, 0 for no limit"
565 << " [" << opt::lb_maxiter << "]\n";
566 std::clog << o("-I value")
567 << "maximum number of comp. iterations, 0 for no limit"
568 << " [" << opt::comp_maxiter << "]\n";
569 std::clog << o("-% value")
570 << "percent of the load average to assume the convergence"
571 << " [" << opt::avg_load_ratio << "]\n";
572 if (opt::help_requested > 1)
574 << "- if negative: use 100 * (nhosts / -value) / avg_load\n";
575 std::clog << o("-g value")
576 << "number of consecutive detections of convergence to exit"
577 << " [" << opt::exit_on_convergence << "]\n";
578 if (opt::help_requested > 1)
580 << "- use 0 to disable\n";
581 std::clog << o("-t value")
582 << "time limit (simulated time), 0 for no limit"
583 << " [" << opt::time_limit << "]\n";
584 std::clog << o("-e") << "toggle exit on reception of \"close\" message"
585 << " [" << opt_helper::on_off(opt::exit_on_close) << "]\n";
587 if (opt::help_requested < 3)
590 std::clog << "\nHidden options:\n";
591 std::clog << o("-x value") << "value is an integer"
592 << " [" << opt::option_x << "]\n";
593 std::clog << o("-X value") << "value is a real number"
594 << " [" << opt::option_X << "]\n";
596 std::clog << "\nLogging support:\n"
597 << " See SimGrid documentation on:\n"
598 << " http://simgrid.gforge.inria.fr/doc/group__XBT__log.html#log_user\n"
599 << " Existing categories are:\n"
600 << " simu : root of following categories\n"
601 << " main : messages from global infrastructure\n"
602 << " depl : messages from auto deployment (inherited from main)\n"
603 << " comm : messages from asynchronous pipes\n"
604 << " proc : messages from base process class\n"
605 << " loba : messages from load-balancer\n"
606 << " thrd : messages from thread wrapper class\n";
608 // std::clog << "\nMiscellaneous low-level parameters\n";