-#include "options.h"
-
#include <iomanip>
#include <iostream>
#include <sstream>
+#include <stack>
#include <unistd.h> // getopt
#include <xbt/log.h>
-#include "loba_simple.h"
XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(main);
+#include "loba_simple.h"
+#include "loba_fairstrategy.h"
+
+#include "options.h"
+
namespace opt {
+ // Constants
+
+ // 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;
// Application parameters
cost_func comp_cost("1e9, 0"); // fixme: find better defaults
cost_func comm_cost("1, 0"); // fixme: find better defaults
- unsigned maxiter = 4; // fixme
+ unsigned comp_maxiter = 10; // fixme: find better defaults
+ unsigned lb_maxiter = comp_maxiter; // 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("none", "no load-balancing (for testing)", process);
+ 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 topologym intiial load at root",
+ 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);
namespace {
- const char* on_off(bool b)
- {
- return b ? "on" : "off";
+ // local helper class
+ class opt_helper {
+ public:
+ static const char* on_off(bool b);
+ const char* descr(const char* str);
+ template <typename T>
+ const char* val_or_string(const T& val, const char* str,
+ const T& deflt = 0);
+ template <typename T>
+ static bool nol_find_prefix(const T& nol, const char* descr,
+ std::string& name);
+
+ private:
+ std::string descr_str;
+ std::string val_or_string_str;
+ };
+
+} // namespace
+
+const char* opt_helper::on_off(bool b)
+{
+ return b ? "on" : "off";
+}
+
+const char* opt_helper::descr(const char* str)
+{
+ const int descr_width = 35;
+ std::string& res = descr_str;
+ res = str;
+ res.resize(descr_width, '.');
+ return res.c_str();
+}
+
+template <typename T>
+const char* opt_helper::val_or_string(const T& val, const char* str,
+ const T& deflt)
+{
+ std::string& res = val_or_string_str;
+ if (val != deflt) {
+ std::ostringstream oss;
+ oss << val;
+ res = oss.str();
+ } else {
+ res = str;
}
+ return res.c_str();
+}
+template <typename T>
+bool opt_helper::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;
}
-int opt::parse_args(int* argc, char* argv[])
+bool opt::parse_args(int* argc, char* argv[])
{
- int result = 1;
+ 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, "a:bc:C:ehi:l:L:N:T:V")) != -1) {
+ while ((c = getopt(*argc, argv, "a:bc:C:ehi:I:l:L:N:s:T:vV")) != -1) {
switch (c) {
case 'a':
opt::loba_algo = optarg;
- if (!opt::loba_algorithms.exists(opt::loba_algo)) {
- ERROR1("unknownw load balancing algorithm -- %s",
- opt::loba_algo.c_str());
- result = 0;
- }
+ result = opt_helper::nol_find_prefix(opt::loba_algorithms,
+ "load balancing algorithm",
+ opt::loba_algo)
+ && result;
break;
case 'b':
opt::bookkeeping = true;
opt::comm_cost = cost_func(optarg);
break;
case 'i':
- std::istringstream(optarg) >> opt::maxiter;
+ std::istringstream(optarg) >> opt::comp_maxiter;
+ break;
+ case 'I':
+ std::istringstream(optarg) >> opt::lb_maxiter;
+ ERROR0("option -I not implemented yet");
+ result = false;
break;
case 'l':
std::istringstream(optarg) >> opt::log_rate;
case 'N':
std::istringstream(optarg) >> opt::auto_depl::nhosts;
break;
+ case 's':
+ std::istringstream(optarg) >> communicator::send_count_before_flush;
+ break;
case 'T':
- opt::auto_depl::topology = optarg;
- if (!opt::topologies.exists(opt::auto_depl::topology)) {
- ERROR1("unknownw topology -- %s",
- opt::auto_depl::topology.c_str());
- result = 0;
- }
+ opt::auto_depl::topology = optarg;
+ result = opt_helper::nol_find_prefix(opt::topologies, "topology",
+ opt::auto_depl::topology)
+ && result;
+ 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;
}
}
opt::platform_file = argv[optind++];
} else {
ERROR0("missing parameter -- <plaform_file>");
- result = 0;
+ result = false;
}
if (optind < *argc) {
opt::deployment_file = argv[optind++];
while (optind < *argc) {
ERROR1("unused parameter -- \"%s\"", argv[optind++]);
- result = 0;
+ result = false;
}
return result;
void opt::print()
{
+ opt_helper h;
+
+#define DESCR(description, format, value) \
+ INFO2("| %s: " format, h.descr(description), value)
+
INFO0(",----[ Simulation parameters ]");
- INFO1("| log rate.....................: %u", opt::log_rate);
- INFO1("| platform file................: \"%s\"", opt::platform_file.c_str());
- if (opt::auto_depl::enabled) {
+ DESCR("log rate", "%s", h.val_or_string(log_rate, "disabled"));
+ DESCR("platform file", "\"%s\"", platform_file.c_str());
+ if (auto_depl::enabled) {
INFO0("| automatic deployment enabled");
- INFO1("| - topology...................: %s", opt::auto_depl::topology.c_str());
- INFO1("| - number of hosts............: %u", opt::auto_depl::nhosts);
- INFO1("| - initial load...............: %g", opt::auto_depl::load);
+ DESCR("- topology", "%s", auto_depl::topology.c_str());
+ DESCR("- number of hosts", "%s", h.val_or_string(auto_depl::nhosts,
+ "auto"));
+ DESCR("- initial load", "%s", h.val_or_string(auto_depl::load,
+ "auto"));
} else {
- INFO1("| deployment file..............: \"%s\"", opt::deployment_file.c_str());
+ DESCR("deployment file", "\"%s\"", 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.: %u", opt::maxiter);
- INFO1("| exit on close................: %s", on_off(opt::exit_on_close));
+ DESCR("load balancing algorithm", "%s", loba_algo.c_str());
+ DESCR("bookkeeping", "%s", h.on_off(bookkeeping));
+ DESCR("computation cost factors", "[%s]", comp_cost.to_string().c_str());
+ DESCR("communication cost factors", "[%s]", comm_cost.to_string().c_str());
+ DESCR("maximum number of comp. iterations", "%s",
+ h.val_or_string(comp_maxiter, "infinity"));
+ DESCR("maximum number of lb. iterations", "%s",
+ h.val_or_string(lb_maxiter, "infinity"));
+ DESCR("exit on close", "%s", h.on_off(exit_on_close));
+ DESCR("send count before flush", "%d",
+ communicator::send_count_before_flush);
INFO0("`----");
+
+#undef DESCR
}
void opt::usage()
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")
<< " (" << 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";
+ << "maximum number of comp. iterations, 0 for infinity"
+ << " (" << opt::comp_maxiter << ")\n";
+ std::clog << o("-I value")
+ << "maximum number of lb. iterations, 0 for infinity"
+ << " (" << opt::lb_maxiter << ")\n";
if (opt::help_requested < 3)
return;
<< " proc : messages from base process class\n"
<< " loba : messages from load-balancer\n";
+ std::clog << "\nMiscellaneous low-level parameters\n";
+ std::clog << o("-s count")
+ << "check for finished comm. every `count' send operation"
+ << " (" << communicator::send_count_before_flush << ")\n";
+
#undef so_list
#undef so
#undef o
