-#include <cstring> // strrchr
#include <iomanip>
#include <iostream>
#include <sstream>
+#include <stack>
#include <unistd.h> // getopt
#include <xbt/log.h>
-#include "options.h"
-#include "misc.h"
-XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simu);
+XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(main);
+
+#include "loba_simple.h"
+#include "loba_fairstrategy.h"
+
+#include "options.h"
namespace opt {
- const char* program_name;
+ // Constants
- const char* platform_file;
- const char* application_file;
+ // A sum of loads if considered null if it is less than
+ // load_ratio_threshold percent of the sum of loads at init.
+ const double load_ratio_threshold = 1e-4;
+ // Global options
+ std::string program_name;
int help_requested = 0;
bool version_requested = false;
- unsigned maxiter = 4;
- bool exit_on_close = false;
+ // Simulation parameters
+ unsigned log_rate = 1;
+
+ // Platform and deployment
+ std::string platform_file;
+ std::string deployment_file;
+ // Automatic deployment
+ namespace auto_depl {
+ bool enabled = false;
+ std::string topology("clique");
+ unsigned nhosts = 0;
+ double load = 0.0;
+ }
+
+ // Load balancing algorithm
+ std::string loba_algo("simple");
bool bookkeeping = false;
+ // Application parameters
cost_func comp_cost("1e9, 0"); // fixme: find better defaults
+ cost_func comm_cost("1, 0"); // fixme: find better defaults
+ unsigned maxiter = 10; // fixme: find better defaults
+ bool exit_on_close = false;
+
+ // Named parameters lists
+ loba_algorithms_type loba_algorithms;
+ loba_algorithms_type::loba_algorithms_type()
+ {
+ NOL_INSERT("fairstrategy", "balance with fair strategy", loba_fairstrategy);
+ NOL_INSERT("none", "no load-balancing (for testing only)", process);
+ NOL_INSERT("simple", "balance with least loaded neighbor", loba_simple);
+ }
+
+ topologies_type topologies;
+ topologies_type::topologies_type()
+ {
+ NOL_INSERT("btree", "binary tree topology, initial load at root",
+ deployment_btree);
+ NOL_INSERT("clique", "all connected topology", deployment_clique);
+ NOL_INSERT("hcube", "hypercube topology", deployment_hcube);
+ NOL_INSERT("line", "line topology, initial load at one end",
+ deployment_line);
+ NOL_INSERT("ring", "ring topology", deployment_ring);
+ NOL_INSERT("star", "star topology, initial load at center",
+ deployment_star);
+ NOL_INSERT("torus", "torus topology", deployment_torus);
+ }
} // namespace opt
namespace {
+ // some helper functions for opt::print()
+
const char* on_off(bool b)
{
return b ? "on" : "off";
}
-}
+ template <typename T>
+ const char* val_or_string(const T& val, const char* str, const T& deflt = 0)
+ {
+ static std::string res;
+ if (val != deflt) {
+ std::ostringstream oss;
+ oss << val;
+ res = oss.str();
+ } else {
+ res = str;
+ }
+ return res.c_str();
+ }
-int opt::parse_args(int* argc, char* argv[])
-{
- int result = 1;
+ // helper function for opt::parse_args()
+
+ template <typename T>
+ bool nol_find_prefix(const T& nol, const char* descr, std::string& name)
+ {
+ bool result = nol.exists(name);
+ if (!result) {
+ std::stack<std::string> candidates;
+ for (typename T::iterator it = nol.begin() ; it != nol.end() ; ++it) {
+ const std::string& fullname = nol.get_name(it);
+ if (fullname.compare(0, name.length(), name) == 0)
+ candidates.push(fullname);
+ }
+ switch (candidates.size()) {
+ case 0:
+ ERROR2("unknownw %s -- %s", descr, name.c_str());
+ break;
+ case 1:
+ name = candidates.top();
+ candidates.pop();
+ result = true;
+ DEBUG2("infered %s -- %s", descr, name.c_str());
+ break;
+ default:
+ ERROR2("ambiguous %s -- %s", descr, name.c_str());
+ while (!candidates.empty()) {
+ ERROR1(" candidates are -- %s", candidates.top().c_str());
+ candidates.pop();
+ }
+ break;
+ }
+ }
+ return result;
+ }
+
+} // namespace
- char* tmp = strrchr(argv[0], '/');
- opt::program_name = (tmp ? tmp + 1 : argv[0]);
+bool opt::parse_args(int* argc, char* argv[])
+{
+ bool result = true;
+ opt::program_name = argv[0];
+ opt::program_name.erase(0, 1 + opt::program_name.find_last_of('/'));
+
int c;
opterr = 0;
- while ((c = getopt(*argc, argv, "bc:ehi:V")) != -1) {
+ while ((c = getopt(*argc, argv, "a:bc:C:ehi:l:L:N:T:vV")) != -1) {
switch (c) {
+ case 'a':
+ opt::loba_algo = optarg;
+ result = nol_find_prefix(opt::loba_algorithms,
+ "load balancing algorithm",
+ opt::loba_algo);
+ break;
case 'b':
opt::bookkeeping = true;
break;
case 'c':
opt::comp_cost = cost_func(optarg);
break;
+ case 'C':
+ opt::comm_cost = cost_func(optarg);
+ break;
case 'i':
std::istringstream(optarg) >> opt::maxiter;
break;
+ case 'l':
+ std::istringstream(optarg) >> opt::log_rate;
+ break;
+ case 'L':
+ std::istringstream(optarg) >> opt::auto_depl::load;
+ break;
+ case 'N':
+ std::istringstream(optarg) >> opt::auto_depl::nhosts;
+ break;
+ case 'T':
+ opt::auto_depl::topology = optarg;
+ result = nol_find_prefix(opt::topologies, "topology",
+ opt::auto_depl::topology);
+ break;
+ case 'v':
+ // nothing to do: this option is checked at the very
+ // beginning of main()
+ break;
case 'V':
opt::version_requested = true;
break;
case '?':
ERROR1("invalid option -- '%c'", optopt);
- result = 0;
+ result = false;
break;
}
}
+
if (opt::version_requested || opt::help_requested)
return 1;
- int rem_args = *argc - optind;
- switch (rem_args) {
- case 0:
+ if (optind < *argc) {
+ opt::platform_file = argv[optind++];
+ } else {
ERROR0("missing parameter -- <plaform_file>");
- case 1:
- ERROR0("missing parameter -- <application_file>");
- result = 0;
- break;
-
- default:
- opt::platform_file = argv[optind];
- opt::application_file = argv[optind + 1];
- if (rem_args == 2)
- break;
- for (int i = optind + 2 ; i < *argc ; ++i)
- ERROR1("unused parameter -- \"%s\"", argv[i]);
- result = 0;
- break;
+ result = false;
+ }
+ if (optind < *argc) {
+ opt::deployment_file = argv[optind++];
+ }
+ opt::auto_depl::enabled = opt::deployment_file.empty();
+
+ while (optind < *argc) {
+ ERROR1("unused parameter -- \"%s\"", argv[optind++]);
+ result = false;
}
return result;
void opt::print()
{
INFO0(",----[ Simulation parameters ]");
- INFO1("| platform_file.......: \"%s\"", opt::platform_file);
- INFO1("| application_file....: \"%s\"", opt::application_file);
- INFO1("| maxiter.............: %u", opt::maxiter);
- INFO1("| exit on close.......: %s", on_off(opt::exit_on_close));
- INFO1("| bookkeeping.........: %s", on_off(opt::bookkeeping));
- INFO1("| comp. cost factors..: [%s]", opt::comp_cost.to_string().c_str());
+ INFO1("| log rate.....................: %s",
+ val_or_string(opt::log_rate, "disabled"));
+ INFO1("| platform file................: \"%s\"", opt::platform_file.c_str());
+ if (opt::auto_depl::enabled) {
+ INFO0("| automatic deployment enabled");
+ INFO1("| - topology...................: %s", opt::auto_depl::topology.c_str());
+ INFO1("| - number of hosts............: %s",
+ val_or_string(opt::auto_depl::nhosts, "auto"));
+ INFO1("| - initial load...............: %s",
+ val_or_string(opt::auto_depl::load, "auto"));
+ } else {
+ INFO1("| deployment file..............: \"%s\"", opt::deployment_file.c_str());
+ }
+ INFO1("| load balancing algorithm.....: %s", opt::loba_algo.c_str());
+ INFO1("| bookkeeping..................: %s", on_off(opt::bookkeeping));
+ INFO1("| computation cost factors.....: [%s]", opt::comp_cost.to_string().c_str());
+ INFO1("| communication cost factors...: [%s]", opt::comm_cost.to_string().c_str());
+ INFO1("| maximum number of iterations.: %s",
+ val_or_string(opt::maxiter, "infinity"));
+ INFO1("| exit on close................: %s", on_off(opt::exit_on_close));
INFO0("`----");
}
void opt::usage()
{
- const int indent1 = 6;
- const int indent2 = 12;
+ // option(...)
+#define o(opt) " " << std::setw(14) \
+ << std::left << (opt) << std::right << " "
+ // sub-option(...)
+#define so(subopt) std::setw(18) << (subopt) << " : "
+ // sub-option list
+#define so_list(name) do { \
+ name ## _type::iterator it; \
+ for (it = name.begin() ; it != name.end() ; ++it) \
+ std::clog << so(name.get_name(it)) \
+ << name.get_descr(it) << "\n"; \
+ } while (0)
-#define oo(opt, arg) std::setw(indent1) << (opt) << " " \
- << std::setw(indent2) << std::left << (arg) << std::right
-#define o(opt) oo(opt, "")
std::clog << "Usage: " << opt::program_name
- << " [options] <platform_file> <application_file>\n";
+ << " [options] <platform_file> [<deployment_file>]\n";
+ std::clog << "\nGlobal options\n";
std::clog << o("-h")
<< "print help and exit (use -hh or -hhh for extended help)\n";
if (opt::help_requested < 1)
return;
+ std::clog << o("--help") << "print help from SimGrid framework and exit\n";
std::clog << o("-V") << "print version and exit\n";
- std::clog << o("-b") << "activate bookkeeping\n";
- std::clog << oo("-c", "[fn,...]f0")
- << "polynomial factors for computation cost ("
- << opt::comp_cost.to_string() << ")\n";
- std::clog << o("-e") << "exit on close reception\n";
- std::clog << oo("-i", "value")
- << "maximum number of iterations, 0 for infinity ("
- << opt::maxiter << ")\n";
+ std::clog << "\nSimulation parameters\n";
+ std::clog << o("-l value")
+ << "print current load every n-th iterations, 0 to disable"
+ << " (" << opt::log_rate << ")\n";
+ std::clog << o("-v")
+ << "verbose: do not override the default logging parameters\n";
+
+ std::clog << "\nAutomatic deployment options\n";
+ std::clog << o("-T name")
+ << "enable automatic deployment with selected topology"
+ << " (" << opt::auto_depl::topology << ")\n";
+ if (opt::help_requested > 1)
+ so_list(opt::topologies);
+ std::clog << o("-L value")
+ << "total load with auto deployment, 0 for number of hosts"
+ << " (" << opt::auto_depl::load << ")\n";
+ std::clog << o("-N value")
+ << "number of hosts to use with auto deployment,"
+ << " 0 for max. (" << opt::auto_depl::nhosts << ")\n";
+
+ std::clog << "\nLoad balancing algorithm\n";
+ std::clog << o("-a name") << "load balancing algorithm"
+ << " (" << opt::loba_algo << ")\n";
+ if (opt::help_requested > 1)
+ so_list(opt::loba_algorithms);
+ std::clog << o("-b") << "enable bookkeeping\n";
+
+ std::clog << "\nApplication parameters\n";
+ std::clog << o("-c [fn,...]f0")
+ << "polynomial factors for computation cost"
+ << " (" << opt::comp_cost.to_string() << ")\n";
+ std::clog << o("-C [fn,...]f0")
+ << "polynomial factors for communication cost"
+ << " (" << opt::comm_cost.to_string() << ")\n";
+ std::clog << o("-e") << "exit on reception of \"close\" message\n";
+ std::clog << o("-i value")
+ << "maximum number of iterations, 0 for infinity"
+ << " (" << opt::maxiter << ")\n";
+
+ if (opt::help_requested < 3)
+ return;
+
+ std::clog << "\nLogging support\n"
+ << " See SimGrid documentation on:\n"
+ << " http://simgrid.gforge.inria.fr/doc/group__XBT__log.html#log_user\n"
+ << " Existing categories are:\n"
+ << " simu : root of following categories\n"
+ << " main : messages from global infrastructure\n"
+ << " depl : messages from auto deployment (inherited from main)\n"
+ << " comm : messages from asynchronous pipes\n"
+ << " proc : messages from base process class\n"
+ << " loba : messages from load-balancer\n";
+#undef so_list
+#undef so
#undef o
-#undef oo
}
// Local variables:
