-#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 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("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 {
+ // 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();
+ }
+
+ // 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
-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:l:L:N: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 = nol_find_prefix(opt::loba_algorithms,
+ "load balancing algorithm",
+ opt::loba_algo);
break;
case 'b':
opt::bookkeeping = true;
std::istringstream(optarg) >> opt::auto_depl::nhosts;
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 = 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;
}
}
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()
{
INFO0(",----[ Simulation parameters ]");
- INFO1("| log rate.....................: %u", opt::log_rate);
+ 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............: %u", opt::auto_depl::nhosts);
- INFO1("| - initial load...............: %g", opt::auto_depl::load);
+ 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("| 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("| maximum number of iterations.: %s",
+ val_or_string(opt::maxiter, "infinity"));
INFO1("| exit on close................: %s", on_off(opt::exit_on_close));
INFO0("`----");
}
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")
