Sebastian Held
parent
b9dea98687
commit
37ff221c18
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@ -32,10 +32,9 @@
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#include "boost/date_time/gregorian/gregorian.hpp"
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#include <iomanip>
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//! \brief construct an Engine_Multithread instance
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//! it's the responsibility of the caller to free the returned pointer
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Engine_Multithread* Engine_Multithread::createEngine(Operator* op, unsigned int numThreads)
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Engine_Multithread* Engine_Multithread::createEngine(const Operator* op, unsigned int numThreads)
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{
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Engine_Multithread* e = new Engine_Multithread(op);
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e->setNumThreads( numThreads );
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@ -43,28 +42,29 @@ Engine_Multithread* Engine_Multithread::createEngine(Operator* op, unsigned int
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return e;
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}
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Engine_Multithread::Engine_Multithread(Operator* op) : Engine(op)
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Engine_Multithread::Engine_Multithread(const Operator* op) : Engine(op)
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{
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}
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Engine_Multithread::~Engine_Multithread()
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{
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#ifdef ENABLE_DEBUG_TIME
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cout << "Engine_Multithread::~Engine_Multithread()" << endl;
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NS_Engine_Multithread::DBG().cout() << "Engine_Multithread::~Engine_Multithread()" << endl;
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std::map<boost::thread::id, std::vector<double> >::iterator it;
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for (it=m_timer_list.begin(); it!=m_timer_list.end(); it++) {
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std::cout << "*** DEBUG Thread: " << it->first << std::endl;
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NS_Engine_Multithread::DBG().cout() << "*** DEBUG Thread: " << it->first << std::endl;
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std::vector<double>::iterator it2;
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for (it2=it->second.begin(); it2<it->second.end();) {
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std::cout << "after voltage update, before barrier1: " << fixed << setprecision(6) << *(it2++) << std::endl;
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std::cout << "after barrier1, before barrier2: " << fixed << setprecision(6) << *(it2++) << std::endl;
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std::cout << "after barrier2, before current update: " << fixed << setprecision(6) << *(it2++) << std::endl;
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std::cout << "after current update, before barrier3: " << fixed << setprecision(6) << *(it2++) << std::endl;
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std::cout << "after barrier3: " << fixed << setprecision(6) << *(it2++) << std::endl;
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NS_Engine_Multithread::DBG().cout() << "after voltage update, before barrier1: " << fixed << setprecision(6) << *(it2++) << std::endl;
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NS_Engine_Multithread::DBG().cout() << "after barrier1, before barrier2: " << fixed << setprecision(6) << *(it2++) << std::endl;
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NS_Engine_Multithread::DBG().cout() << "after barrier2, before current update: " << fixed << setprecision(6) << *(it2++) << std::endl;
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NS_Engine_Multithread::DBG().cout() << "after current update, before barrier3: " << fixed << setprecision(6) << *(it2++) << std::endl;
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NS_Engine_Multithread::DBG().cout() << "after barrier3: " << fixed << setprecision(6) << *(it2++) << std::endl;
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}
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}
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#endif
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Reset();
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}
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void Engine_Multithread::setNumThreads( unsigned int numThreads )
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@ -74,35 +74,55 @@ void Engine_Multithread::setNumThreads( unsigned int numThreads )
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void Engine_Multithread::Init()
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{
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Engine::Init();
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m_numTS_times_threads = 0;
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Engine::Init(); // gets cleaned up by Engine::~Engine()
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// initialize threads
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m_stopThreads = false;
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if (m_numThreads == 0)
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m_numThreads = boost::thread::hardware_concurrency();
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std::cout << "using " << m_numThreads << " threads" << std::endl;
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cout << "using " << m_numThreads << " threads" << std::endl;
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m_barrier1 = new boost::barrier(m_numThreads+1); // numThread workers + 1 excitation thread
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m_barrier2 = new boost::barrier(m_numThreads+1); // numThread workers + 1 excitation thread
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m_barrier3 = new boost::barrier(m_numThreads); // numThread workers
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m_startBarrier = new boost::barrier(m_numThreads+1); // numThread workers + 1 controller
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m_stopBarrier = new boost::barrier(m_numThreads+1); // numThread workers + 1 controller
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unsigned int linesPerThread = round((float)Op->numLines[0] / (float)m_numThreads);
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for (unsigned int n=0; n<m_numThreads; n++) {
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unsigned int linesPerThread = (Op->numLines[0]+m_numThreads-1) / m_numThreads;
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unsigned int start = n * linesPerThread;
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unsigned int stop = min( (n+1) * linesPerThread - 1, Op->numLines[0]-1 );
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unsigned int stop_h = (n!=m_numThreads-1)?stop:stop-1;
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std::cout << "###DEBUG## Thread " << n << ": start=" << start << " stop=" << stop << " stop_h=" << stop_h << std::endl;
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boost::thread *t = new boost::thread( thread(this,start,stop,stop_h) );
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unsigned int stop = (n+1) * linesPerThread - 1;
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unsigned int stop_h = stop;
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if (n == m_numThreads-1) {
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// last thread
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stop = Op->numLines[0]-1;
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stop_h = stop-1;
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}
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//NS_Engine_Multithread::DBG().cout() << "###DEBUG## Thread " << n << ": start=" << start << " stop=" << stop << " stop_h=" << stop_h << std::endl;
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boost::thread *t = new boost::thread( NS_Engine_Multithread::thread(this,start,stop,stop_h,n) );
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m_thread_group.add_thread( t );
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}
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boost::thread *t = new boost::thread( thread_e_excitation(this) );
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boost::thread *t = new boost::thread( NS_Engine_Multithread::thread_e_excitation(this) );
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m_thread_group.add_thread( t );
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}
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void Engine_Multithread::Reset()
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{
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if (!m_stopThreads) {
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// prevent multiple invocations
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// stop the threads
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//NS_Engine_Multithread::DBG().cout() << "stopping all threads" << endl;
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m_iterTS = 1;
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m_startBarrier->wait(); // start the threads
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m_stopThreads = true;
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m_stopBarrier->wait(); // wait for the threads to finish
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m_thread_group.join_all(); // wait for termination
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delete m_barrier1; m_barrier1 = 0;
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delete m_barrier2; m_barrier2 = 0;
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delete m_barrier3; m_barrier3 = 0;
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delete m_startBarrier; m_startBarrier = 0;
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delete m_stopBarrier; m_stopBarrier = 0;
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}
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Engine::Reset();
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}
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@ -110,43 +130,41 @@ void Engine_Multithread::Reset()
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bool Engine_Multithread::IterateTS(unsigned int iterTS)
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{
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m_iterTS = iterTS;
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//cout << "bool Engine_Multithread::IterateTS(): starting threads ...";
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m_startBarrier->wait(); // start the threads
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//cout << "... threads started";
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m_stopBarrier->wait(); // wait for the threads to finish <iterTS> time steps
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numTS = m_numTS_times_threads / m_numThreads;
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return true;
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}
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//
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// *************************************************************************************************************************
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//
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namespace NS_Engine_Multithread {
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thread::thread( Engine_Multithread* ptr, unsigned int start, unsigned int stop, unsigned int stop_h )
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thread::thread( Engine_Multithread* ptr, unsigned int start, unsigned int stop, unsigned int stop_h, unsigned int threadID )
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{
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m_enginePtr = ptr;
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m_start = start;
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m_stop = stop;
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m_stop_h = stop_h;
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Op = m_enginePtr->Op;
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m_stopThread = false;
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// volt = m_enginePtr->volt;
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// curr = m_enginePtr->curr;
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m_threadID = threadID;
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}
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void thread::operator()()
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{
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//std::cout << "thread::operator() Parameters: " << m_start << " " << m_stop << std::endl;
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//DBG().cout() << "Thread " << m_threadID << " (" << boost::this_thread::get_id() << ") started." << endl;
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unsigned int pos[3];
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bool shift[3];
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while (!m_stopThread) {
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while (!m_enginePtr->m_stopThreads) {
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// wait for start
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//cout << "Thread " << boost::this_thread::get_id() << " waiting..." << endl;
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//DBG().cout() << "Thread " << m_threadID << " (" << boost::this_thread::get_id() << ") waiting..." << endl;
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m_enginePtr->m_startBarrier->wait();
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//cout << "Thread " << boost::this_thread::get_id() << " waiting... started." << endl;
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@ -158,24 +176,24 @@ void thread::operator()()
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for (pos[0]=m_start;pos[0]<=m_stop;++pos[0])
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{
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shift[0]=pos[0];
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for (pos[1]=0;pos[1]<Op->numLines[1];++pos[1])
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for (pos[1]=0;pos[1]<m_enginePtr->Op->numLines[1];++pos[1])
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{
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shift[1]=pos[1];
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for (pos[2]=0;pos[2]<Op->numLines[2];++pos[2])
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for (pos[2]=0;pos[2]<m_enginePtr->Op->numLines[2];++pos[2])
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{
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shift[2]=pos[2];
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//do the updates here
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//for x
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m_enginePtr->volt[0][pos[0]][pos[1]][pos[2]] *= Op->vv[0][pos[0]][pos[1]][pos[2]];
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m_enginePtr->volt[0][pos[0]][pos[1]][pos[2]] += Op->vi[0][pos[0]][pos[1]][pos[2]] * ( m_enginePtr->curr[2][pos[0]][pos[1]][pos[2]] - m_enginePtr->curr[2][pos[0]][pos[1]-shift[1]][pos[2]] - m_enginePtr->curr[1][pos[0]][pos[1]][pos[2]] + m_enginePtr->curr[1][pos[0]][pos[1]][pos[2]-shift[2]]);
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m_enginePtr->volt[0][pos[0]][pos[1]][pos[2]] *= m_enginePtr->Op->vv[0][pos[0]][pos[1]][pos[2]];
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m_enginePtr->volt[0][pos[0]][pos[1]][pos[2]] += m_enginePtr->Op->vi[0][pos[0]][pos[1]][pos[2]] * ( m_enginePtr->curr[2][pos[0]][pos[1]][pos[2]] - m_enginePtr->curr[2][pos[0]][pos[1]-shift[1]][pos[2]] - m_enginePtr->curr[1][pos[0]][pos[1]][pos[2]] + m_enginePtr->curr[1][pos[0]][pos[1]][pos[2]-shift[2]]);
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//for y
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m_enginePtr->volt[1][pos[0]][pos[1]][pos[2]] *= Op->vv[1][pos[0]][pos[1]][pos[2]];
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m_enginePtr->volt[1][pos[0]][pos[1]][pos[2]] += Op->vi[1][pos[0]][pos[1]][pos[2]] * ( m_enginePtr->curr[0][pos[0]][pos[1]][pos[2]] - m_enginePtr->curr[0][pos[0]][pos[1]][pos[2]-shift[2]] - m_enginePtr->curr[2][pos[0]][pos[1]][pos[2]] + m_enginePtr->curr[2][pos[0]-shift[0]][pos[1]][pos[2]]);
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m_enginePtr->volt[1][pos[0]][pos[1]][pos[2]] *= m_enginePtr->Op->vv[1][pos[0]][pos[1]][pos[2]];
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m_enginePtr->volt[1][pos[0]][pos[1]][pos[2]] += m_enginePtr->Op->vi[1][pos[0]][pos[1]][pos[2]] * ( m_enginePtr->curr[0][pos[0]][pos[1]][pos[2]] - m_enginePtr->curr[0][pos[0]][pos[1]][pos[2]-shift[2]] - m_enginePtr->curr[2][pos[0]][pos[1]][pos[2]] + m_enginePtr->curr[2][pos[0]-shift[0]][pos[1]][pos[2]]);
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//for x
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m_enginePtr->volt[2][pos[0]][pos[1]][pos[2]] *= Op->vv[2][pos[0]][pos[1]][pos[2]];
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m_enginePtr->volt[2][pos[0]][pos[1]][pos[2]] += Op->vi[2][pos[0]][pos[1]][pos[2]] * ( m_enginePtr->curr[1][pos[0]][pos[1]][pos[2]] - m_enginePtr->curr[1][pos[0]-shift[0]][pos[1]][pos[2]] - m_enginePtr->curr[0][pos[0]][pos[1]][pos[2]] + m_enginePtr->curr[0][pos[0]][pos[1]-shift[1]][pos[2]]);
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m_enginePtr->volt[2][pos[0]][pos[1]][pos[2]] *= m_enginePtr->Op->vv[2][pos[0]][pos[1]][pos[2]];
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m_enginePtr->volt[2][pos[0]][pos[1]][pos[2]] += m_enginePtr->Op->vi[2][pos[0]][pos[1]][pos[2]] * ( m_enginePtr->curr[1][pos[0]][pos[1]][pos[2]] - m_enginePtr->curr[1][pos[0]-shift[0]][pos[1]][pos[2]] - m_enginePtr->curr[0][pos[0]][pos[1]][pos[2]] + m_enginePtr->curr[0][pos[0]][pos[1]-shift[1]][pos[2]]);
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}
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}
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}
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@ -200,22 +218,22 @@ void thread::operator()()
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//current updates
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for (pos[0]=m_start;pos[0]<=m_stop_h;++pos[0])
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{
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for (pos[1]=0;pos[1]<Op->numLines[1]-1;++pos[1])
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for (pos[1]=0;pos[1]<m_enginePtr->Op->numLines[1]-1;++pos[1])
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{
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for (pos[2]=0;pos[2]<Op->numLines[2]-1;++pos[2])
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for (pos[2]=0;pos[2]<m_enginePtr->Op->numLines[2]-1;++pos[2])
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{
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//do the updates here
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//for x
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m_enginePtr->curr[0][pos[0]][pos[1]][pos[2]] *= Op->ii[0][pos[0]][pos[1]][pos[2]];
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m_enginePtr->curr[0][pos[0]][pos[1]][pos[2]] += Op->iv[0][pos[0]][pos[1]][pos[2]] * ( m_enginePtr->volt[2][pos[0]][pos[1]][pos[2]] - m_enginePtr->volt[2][pos[0]][pos[1]+1][pos[2]] - m_enginePtr->volt[1][pos[0]][pos[1]][pos[2]] + m_enginePtr->volt[1][pos[0]][pos[1]][pos[2]+1]);
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m_enginePtr->curr[0][pos[0]][pos[1]][pos[2]] *= m_enginePtr->Op->ii[0][pos[0]][pos[1]][pos[2]];
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m_enginePtr->curr[0][pos[0]][pos[1]][pos[2]] += m_enginePtr->Op->iv[0][pos[0]][pos[1]][pos[2]] * ( m_enginePtr->volt[2][pos[0]][pos[1]][pos[2]] - m_enginePtr->volt[2][pos[0]][pos[1]+1][pos[2]] - m_enginePtr->volt[1][pos[0]][pos[1]][pos[2]] + m_enginePtr->volt[1][pos[0]][pos[1]][pos[2]+1]);
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//for y
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m_enginePtr->curr[1][pos[0]][pos[1]][pos[2]] *= Op->ii[1][pos[0]][pos[1]][pos[2]];
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m_enginePtr->curr[1][pos[0]][pos[1]][pos[2]] += Op->iv[1][pos[0]][pos[1]][pos[2]] * ( m_enginePtr->volt[0][pos[0]][pos[1]][pos[2]] - m_enginePtr->volt[0][pos[0]][pos[1]][pos[2]+1] - m_enginePtr->volt[2][pos[0]][pos[1]][pos[2]] + m_enginePtr->volt[2][pos[0]+1][pos[1]][pos[2]]);
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m_enginePtr->curr[1][pos[0]][pos[1]][pos[2]] *= m_enginePtr->Op->ii[1][pos[0]][pos[1]][pos[2]];
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m_enginePtr->curr[1][pos[0]][pos[1]][pos[2]] += m_enginePtr->Op->iv[1][pos[0]][pos[1]][pos[2]] * ( m_enginePtr->volt[0][pos[0]][pos[1]][pos[2]] - m_enginePtr->volt[0][pos[0]][pos[1]][pos[2]+1] - m_enginePtr->volt[2][pos[0]][pos[1]][pos[2]] + m_enginePtr->volt[2][pos[0]+1][pos[1]][pos[2]]);
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//for x
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m_enginePtr->curr[2][pos[0]][pos[1]][pos[2]] *= Op->ii[2][pos[0]][pos[1]][pos[2]];
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m_enginePtr->curr[2][pos[0]][pos[1]][pos[2]] += Op->iv[2][pos[0]][pos[1]][pos[2]] * ( m_enginePtr->volt[1][pos[0]][pos[1]][pos[2]] - m_enginePtr->volt[1][pos[0]+1][pos[1]][pos[2]] - m_enginePtr->volt[0][pos[0]][pos[1]][pos[2]] + m_enginePtr->volt[0][pos[0]][pos[1]+1][pos[2]]);
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m_enginePtr->curr[2][pos[0]][pos[1]][pos[2]] *= m_enginePtr->Op->ii[2][pos[0]][pos[1]][pos[2]];
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m_enginePtr->curr[2][pos[0]][pos[1]][pos[2]] += m_enginePtr->Op->iv[2][pos[0]][pos[1]][pos[2]] * ( m_enginePtr->volt[1][pos[0]][pos[1]][pos[2]] - m_enginePtr->volt[1][pos[0]+1][pos[1]][pos[2]] - m_enginePtr->volt[0][pos[0]][pos[1]][pos[2]] + m_enginePtr->volt[0][pos[0]][pos[1]+1][pos[2]]);
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}
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}
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}
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@ -230,45 +248,54 @@ void thread::operator()()
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//soft current excitation here (H-field excite)
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++m_enginePtr->m_numTS_times_threads;
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if (m_threadID == 0)
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++m_enginePtr->numTS; // only the first thread increments numTS
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}
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m_enginePtr->m_stopBarrier->wait();
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}
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//DBG().cout() << "Thread " << m_threadID << " (" << boost::this_thread::get_id() << ") finished." << endl;
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}
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} // namespace
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//
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// *************************************************************************************************************************
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//
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namespace NS_Engine_Multithread {
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thread_e_excitation::thread_e_excitation( Engine_Multithread* ptr )
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{
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m_enginePtr = ptr;
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Op = m_enginePtr->Op;
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m_stopThread = false;
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// volt = m_enginePtr->volt;
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// curr = m_enginePtr->curr;
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}
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void thread_e_excitation::operator()()
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{
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//std::cout << "thread_e_excitation::operator()" << std::endl;
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while (!m_stopThread) {
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// waiting on thread
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m_enginePtr->m_barrier1->wait();
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//DBG().cout() << "Thread e_excitation (" << boost::this_thread::get_id() << ") started." << endl;
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int exc_pos;
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unsigned int numTS = m_enginePtr->m_numTS_times_threads / m_enginePtr->m_numThreads;
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const unsigned int E_Exc_Count = m_enginePtr->Op->E_Exc_Count;
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while (!m_enginePtr->m_stopThreads)
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{
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// waiting on NS_Engine_Multithread::thread
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m_enginePtr->m_barrier1->wait();
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// soft voltage excitation here (E-field excite)
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for (unsigned int n=0;n<Op->E_Exc_Count;++n)
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for (unsigned int n=0;n<E_Exc_Count;++n)
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{
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exc_pos = (int)numTS - (int)Op->E_Exc_delay[n];
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exc_pos*= (exc_pos>0 && exc_pos<=(int)Op->ExciteLength);
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// if (n==0) cerr << numTS << " => " << Op->ExciteSignal[exc_pos] << endl;
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m_enginePtr->volt[Op->E_Exc_dir[n]][Op->E_Exc_index[0][n]][Op->E_Exc_index[1][n]][Op->E_Exc_index[2][n]] += Op->E_Exc_amp[n]*Op->ExciteSignal[exc_pos];
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exc_pos = (int)m_enginePtr->numTS - (int)m_enginePtr->Op->E_Exc_delay[n];
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exc_pos*= (exc_pos>0 && exc_pos<=(int)m_enginePtr->Op->ExciteLength);
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||||
m_enginePtr->volt[m_enginePtr->Op->E_Exc_dir[n]][m_enginePtr->Op->E_Exc_index[0][n]][m_enginePtr->Op->E_Exc_index[1][n]][m_enginePtr->Op->E_Exc_index[2][n]] += m_enginePtr->Op->E_Exc_amp[n]*m_enginePtr->Op->ExciteSignal[exc_pos];
|
||||
}
|
||||
|
||||
// continueing thread
|
||||
// continue NS_Engine_Multithread::thread
|
||||
m_enginePtr->m_barrier2->wait();
|
||||
}
|
||||
|
||||
//DBG().cout() << "Thread e_excitation (" << boost::this_thread::get_id() << ") finished." << endl;
|
||||
}
|
||||
|
||||
} // namespace
|
||||
|
|
|
|||
|
|
@ -26,8 +26,20 @@
|
|||
#include <boost/fusion/container/list/list_fwd.hpp>
|
||||
#include <boost/fusion/include/list_fwd.hpp>
|
||||
|
||||
//debug
|
||||
class Timer {
|
||||
class Engine_Multithread;
|
||||
|
||||
namespace NS_Engine_Multithread {
|
||||
|
||||
class DBG { // debug
|
||||
public:
|
||||
DBG() {}
|
||||
~DBG() { std::cout << os.str();}
|
||||
std::ostringstream& cout() {return os;}
|
||||
protected:
|
||||
std::ostringstream os;
|
||||
};
|
||||
|
||||
class Timer { //debug
|
||||
public:
|
||||
Timer() {gettimeofday(&t1,NULL);}
|
||||
double elapsed() {gettimeofday(&t2,NULL); return (t2.tv_sec-t1.tv_sec) + (t2.tv_usec-t1.tv_usec)*1e-6;}
|
||||
|
|
@ -35,12 +47,33 @@ protected:
|
|||
timeval t1,t2;
|
||||
};
|
||||
|
||||
class thread {
|
||||
public:
|
||||
thread( Engine_Multithread* ptr, unsigned int start, unsigned int stop, unsigned int stop_h, unsigned int threadID );
|
||||
void operator()();
|
||||
|
||||
protected:
|
||||
unsigned int m_start, m_stop, m_stop_h, m_threadID;
|
||||
Engine_Multithread *m_enginePtr;
|
||||
};
|
||||
|
||||
class thread_e_excitation {
|
||||
public:
|
||||
thread_e_excitation( Engine_Multithread* ptr);
|
||||
void operator()();
|
||||
|
||||
protected:
|
||||
Engine_Multithread *m_enginePtr;
|
||||
};
|
||||
} // namespace
|
||||
|
||||
|
||||
class Engine_Multithread : public Engine
|
||||
{
|
||||
friend class thread;
|
||||
friend class thread_e_excitation;
|
||||
friend class NS_Engine_Multithread::thread;
|
||||
friend class NS_Engine_Multithread::thread_e_excitation;
|
||||
public:
|
||||
static Engine_Multithread* createEngine(Operator* op, unsigned int numThreads = 0);
|
||||
static Engine_Multithread* createEngine(const Operator* op, unsigned int numThreads = 0);
|
||||
virtual ~Engine_Multithread();
|
||||
|
||||
virtual void setNumThreads( unsigned int numThreads );
|
||||
|
|
@ -50,48 +83,17 @@ public:
|
|||
//!Iterate a number of timesteps
|
||||
virtual bool IterateTS(unsigned int iterTS);
|
||||
|
||||
virtual unsigned int GetNumberOfTimesteps() {return m_numTS_times_threads / m_numThreads;}
|
||||
|
||||
protected:
|
||||
Engine_Multithread(Operator* op);
|
||||
Engine_Multithread(const Operator* op);
|
||||
boost::thread_group m_thread_group;
|
||||
boost::barrier *m_barrier1, *m_barrier2, *m_barrier3, *m_startBarrier, *m_stopBarrier;
|
||||
volatile unsigned int m_iterTS;
|
||||
volatile unsigned int m_numTS_times_threads; //!< numTS times the number of worker threads
|
||||
unsigned int m_numThreads; //!< number of worker threads
|
||||
volatile bool m_stopThreads;
|
||||
|
||||
#ifdef ENABLE_DEBUG_TIME
|
||||
std::map<boost::thread::id, std::vector<double> > m_timer_list;
|
||||
#endif
|
||||
};
|
||||
|
||||
|
||||
|
||||
class thread {
|
||||
public:
|
||||
thread( Engine_Multithread* ptr, unsigned int start, unsigned int stop, unsigned int stop_h );
|
||||
void operator()();
|
||||
|
||||
protected:
|
||||
unsigned int m_start, m_stop, m_stop_h;
|
||||
volatile bool m_stopThread;
|
||||
Engine_Multithread *m_enginePtr;
|
||||
Operator *Op;
|
||||
// FDTD_FLOAT**** volt;
|
||||
// FDTD_FLOAT**** curr;
|
||||
};
|
||||
|
||||
class thread_e_excitation {
|
||||
public:
|
||||
thread_e_excitation( Engine_Multithread* ptr);
|
||||
void operator()();
|
||||
|
||||
protected:
|
||||
volatile bool m_stopThread;
|
||||
Engine_Multithread *m_enginePtr;
|
||||
Operator *Op;
|
||||
// FDTD_FLOAT**** volt;
|
||||
// FDTD_FLOAT**** curr;
|
||||
};
|
||||
|
||||
#endif // ENGINE_MULTITHREAD_H
|
||||
|
|
|
|||
Loading…
Reference in New Issue