Open-Harbor/osrm-backend
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Set number of threads in TBB

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This commit is contained in:
Patrick Niklaus 2014-05-21 00:01:02 +02:00
parent f487845e9d
commit bbc0424563
1 changed files with 11 additions and 4 deletions
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15
prepare.cpp
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@ -49,11 +49,14 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <luabind/luabind.hpp>
#include <thread>
#include <chrono>
#include <memory>
#include <string>
#include <vector>
#include <tbb/task_scheduler_init.h>
typedef QueryEdge::EdgeData EdgeData;
typedef DynamicGraph<EdgeData>::InputEdge InputEdge;
typedef StaticGraph<EdgeData>::InputEdge StaticEdge;
@ -66,6 +69,8 @@ std::vector<ImportEdge> edge_list;
int main(int argc, char *argv[])
{
try
{
LogPolicy::GetInstance().Unmute();
@ -73,7 +78,7 @@ int main(int argc, char *argv[])
std::chrono::steady_clock::now();
boost::filesystem::path config_file_path, input_path, restrictions_path, profile_path;
int requested_num_threads;
unsigned int requested_num_threads;
// declare a group of options that will be allowed only on command line
boost::program_options::options_description generic_options("Options");
@ -95,7 +100,7 @@ int main(int argc, char *argv[])
->default_value("profile.lua"),
"Path to LUA routing profile")(
"threads,t",
boost::program_options::value<int>(&requested_num_threads)->default_value(8),
boost::program_options::value<unsigned int>(&requested_num_threads)->default_value(8),
"Number of threads to use");
// hidden options, will be allowed both on command line and in config file, but will not be
@ -174,7 +179,8 @@ int main(int argc, char *argv[])
return 1;
}
int real_num_threads = std::min(omp_get_num_procs(), requested_num_threads);
unsigned int hardware_threads = std::max((unsigned int) 1, std::thread::hardware_concurrency());
unsigned int real_num_threads = std::min(hardware_threads, requested_num_threads);
SimpleLogger().Write() << "Input file: " << input_path.filename().string();
SimpleLogger().Write() << "Restrictions file: " << restrictions_path.filename().string();
@ -182,7 +188,8 @@ int main(int argc, char *argv[])
SimpleLogger().Write() << "Threads: " << real_num_threads << " (requested "
<< requested_num_threads << ")";
omp_set_num_threads(real_num_threads);
tbb::task_scheduler_init init(real_num_threads);
LogPolicy::GetInstance().Unmute();
boost::filesystem::ifstream restriction_stream(restrictions_path, std::ios::binary);
TurnRestriction restriction;