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tc_family.cpp
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// Copyright (C) 2018 Thejaka Amila Kanewala, Marcin Zalewski, Andrew Lumsdaine.
// Boost Software License - Version 1.0 - August 17th, 2003
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
// Authors: Thejaka Kanewala
// Marcin Zalewski
// Andrew Lumsdaine
//======== Triangle Counting Algortihms================//
// Driver for Triangle Counting (TC) family of algorithms.
//===========================================================//
#include <iostream>
#include "common/synthetic_generator.hpp"
#include "common/parser.hpp"
#include "common/executor.hpp"
#include "common/vertex_permutations.hpp"
#include "common/spinlock.hpp"
#include <boost/graph/distributed/triangle_counting.hpp>
#include <boost/graph/distributed/triangle_counting_blocked.hpp>
#include <boost/graph/distributed/triangle_counting_sucsuc.hpp>
#include <boost/graph/distributed/triangle_counting_sps.hpp>
#include <boost/graph/distributed/triangle_counting_level.hpp>
enum tc_algorithm {
dag_tc_striped,
dag_tc_blocked,
dag_tc_sps,
dag_tc_level,
dag_tc_predpred,
dag_tc_sucsuc
};
class tc_instance_params {
public:
tc_algorithm algorithm;
id_distribution_t id_distribution;
bool verify;
uint64_t triangles;
uint64_t block_size = 1000;
uint64_t suc_block_size = 2;
bool degreeasc;
tc_instance_params(tc_algorithm& alg,
id_distribution_t& idd,
bool v,
uint64_t& t,
uint64_t bz,
uint64_t sucbz,
bool degord):
algorithm(alg), id_distribution(idd), verify(v), triangles(t), block_size(bz),
suc_block_size(sucbz),
degreeasc(degord){}
void print() {
std::cout << "Algorithm : " << get_algorithm() << std::endl;
if (id_distribution == vertical)
std::cout << "id distribution : vertical" << std::endl;
if (id_distribution == degree) {
if (degreeasc)
std::cout << "id distribution : degree-asc" << std::endl;
else
std::cout << "id distribution : degree-dsc" << std::endl;
}
if (id_distribution == horizontal)
std::cout << "id distribution : horizontal" << std::endl;
std::cout << "verify : " << verify << std::endl;
std::cout << "block size : " << block_size << std::endl;
std::cout << "successor block size : " << suc_block_size << std::endl;
std::cout << "expected triangles : " << triangles << std::endl;
}
std::string get_algorithm() {
std::string ordered = "-Ordered";
#ifdef TC_NO_ORDERING
ordered = "";
#endif
if (algorithm == dag_tc_striped)
return ("TC Striped"+ordered);
else if(algorithm == dag_tc_blocked)
return ("TC Blocked(PSP)"+ordered);
else if(algorithm == dag_tc_sps)
return ("TC SPS"+ordered);
else if(algorithm == dag_tc_level)
return ("TC Level"+ordered);
else if(algorithm == dag_tc_predpred)
return ("TC PredPred"+ordered);
else if(algorithm == dag_tc_sucsuc) {
#ifdef TC_ALGO_SUCSUC
return ("TC SucSuc"+ordered);
#else
return ("TC PredPred"+ordered);
#endif
} else
return "Invalid Algorithm!";
}
};
class tc_params {
private:
std::vector<tc_instance_params> instance_params;
std::vector<tc_algorithm> algorithms;
id_distribution_t id_distribution = horizontal; // default
bool verify = false;
uint64_t triangles;
std::vector<uint64_t> block_size;
std::vector<uint64_t> suc_block_sizes;
bool degreeasc = true;
public:
bool parse(int argc, char* argv[]){
for (int i = 1; i < argc; ++i) {
tc_algorithm algorithm;
std::string arg = argv[i];
if (arg == "--run_tc_striped") {
algorithm = dag_tc_striped;
algorithms.push_back(algorithm);
}
if (arg == "--run_tc_blocked") {
algorithm = dag_tc_blocked;
algorithms.push_back(algorithm);
}
if (arg == "--run_tc_sps") {
algorithm = dag_tc_sps;
algorithms.push_back(algorithm);
}
if (arg == "--run_tc_sucsuc") {
algorithm = dag_tc_sucsuc;
algorithms.push_back(algorithm);
}
if (arg == "--run_tc_level") {
algorithm = dag_tc_level;
algorithms.push_back(algorithm);
}
if (arg == "--pred-block-size") {
block_size = extract_params<size_t>( argv[i+1] );
}
if (arg == "--suc-block-size") {
suc_block_sizes = extract_params<size_t>( argv[i+1] );
}
if (arg == "--expected-triangles")
triangles = boost::lexical_cast<uint64_t>( argv[i+1]);
if (arg == "--id-distribution") {
if (strcmp(argv[i+1],"vertical") == 0)
id_distribution = vertical;
else if (strcmp(argv[i+1],"horizontal") == 0)
id_distribution = horizontal;
else if (strcmp(argv[i+1],"degree-asc") == 0) {
id_distribution = degree;
degreeasc = true;
} else if (strcmp(argv[i+1],"degree-dsc") == 0) {
id_distribution = degree;
degreeasc = false;
} else {
std::cout << "Invalid id distribution type. Available types are vertical and horizontal"
<< std::endl;
return false;
}
}
if (arg == "--verify") {
verify = true;
}
}
if (suc_block_sizes.empty())
suc_block_sizes.push_back(2);
if (block_size.empty())
block_size.push_back(1000);
}
void print() {
BOOST_FOREACH(tc_algorithm alg, algorithms) {
std::cout << "Algorithm -- ";
if (alg == dag_tc_striped)
std::cout << "TC Synchronous";
else if(alg == dag_tc_blocked)
std::cout << "TC PSP";
else if(alg == dag_tc_sps)
std::cout << "TC SPS";
else if(alg == dag_tc_predpred)
std::cout << "TC Predecessor-Predecessor";
else if(alg == dag_tc_sucsuc) {
#ifdef TC_ALGO_SUCSUC
std::cout << "TC Successor-Successor";
#else
std::cout << "TC Predecessor-Predecessor";
#endif
} else
std::cerr << "Invalid !" << std::endl;
std::cout << std::endl;
}
if (id_distribution == vertical)
std::cout << "id distribution : vertical" << std::endl;
if (id_distribution == degree) {
if (degreeasc)
std::cout << "id distribution : degree-asc" << std::endl;
else
std::cout << "id distribution : degree-dsc" << std::endl;
}
if (id_distribution == horizontal)
std::cout << "id distribution : horizontal" << std::endl;
std::cout << "verify : " << verify << std::endl;
std::cout << "expected triangles : " << triangles << std::endl;
}
std::vector<tc_instance_params>&
get_instance_params() {
if (instance_params.empty()) {
BOOST_FOREACH(uint64_t bsz, block_size) {
BOOST_FOREACH(uint64_t sucbsz, suc_block_sizes) {
BOOST_FOREACH(tc_algorithm alg, algorithms) {
instance_params.push_back(tc_instance_params(alg, id_distribution,
verify, triangles,
bsz, sucbsz, degreeasc));
}
}
}
return instance_params;
}
}
};
template<typename Graph,
typename work_item_t,
typename MessageGenerator =
amplusplus::simple_generator<amplusplus::counter_coalesced_message_type_gen> >
struct triangle_verifier {
typedef triangle_verifier<Graph, MessageGenerator> self_type;
typedef typename boost::property_map<Graph, boost::vertex_owner_t>::const_type OwnerMap;
typedef typename boost::graph_traits<Graph>::vertex_descriptor Vertex;
struct verify_handler;
struct minimum_pair_first
{
template<typename T>
const T& operator()(const T& x, const T& y) const { return x < y ? x : y; }
template<typename F>
struct result {
typedef typename boost::function_traits<F>::arg1_type type;
};
};
typedef typename MessageGenerator::template call_result<work_item_t,
verify_handler,
owner_from_pair<OwnerMap, work_item_t>,
amplusplus::idempotent_combination_t<minimum_pair_first > >::type RelaxMessage;
public:
triangle_verifier(Graph& gr,
std::vector<work_item_t>& t,
amplusplus::transport& tr,
int offset,
MessageGenerator message_gen =
MessageGenerator(amplusplus::counter_coalesced_message_type_gen(1 << 12))):
dummy_first_member_for_init_order
((amplusplus::register_mpi_datatype<work_item_t>(),
0)),
g(gr),
owner(boost::get(boost::vertex_owner, g)),
triangles(t),
transport(tr),
core_offset(offset),
relax_msg(message_gen,
transport,
owner_from_pair<OwnerMap, work_item_t>(owner),
amplusplus::idempotent_combination(minimum_pair_first())){}
void initialize() {
relax_msg.set_handler(verify_handler(*this, g));
}
void operator()(int tid) {
AMPLUSPLUS_WITH_THREAD_ID(tid) {
int nthreads = transport.get_nthreads();
if (0 == tid) {
// Set the number of threads to the barrier
t_bar.reset(new amplusplus::detail::barrier(nthreads));
}
{ amplusplus::scoped_epoch epoch(transport); }
// Now above if branch needs to be executed to every thread
// Therefore wait till every thread comes to this point
t_bar->wait();
// if two processes are running on the same node, core_offset
// is important to achieve thread affinity
if (pin(tid+core_offset) != 0) {
std::cerr << "[ERROR] Unable to pin current thread to "
<< "core : " << tid << std::endl;
assert(false);
}
// wait till all threads are pinned
t_bar->wait();
{ amplusplus::scoped_epoch epoch(transport); }
validate_thread_core_relation();
{
amplusplus::scoped_epoch epoch(transport);
for(int i=tid; i < triangles.size(); i=(i+nthreads)) {
work_item_t wi = triangles[i];
Vertex succ = wi.first;
Vertex cur = wi.second.first;
Vertex pred = wi.second.second;
assert(boost::get(owner, succ) == transport.rank());
bool fedgecur = false;
bool fedgepred = false;
//check whether there are edges from succ to cur and pred
BGL_FORALL_OUTEDGES_T(succ, e, g, Graph) {
Vertex u = boost::target(e, g);
if (u == cur) {
fedgecur = true;
if (fedgepred)
break;
}
if (u == pred) {
fedgepred = true;
if (fedgecur)
break;
}
}
if (fedgecur && fedgepred) {
// we know there is an edge from succ to cur and pred
// we now need to find whether there is an edge between pred and cur
// if one of pred and cur in current locality we dont need distributed
// communication. If not we need to send a message to owner of cur or pred
bool foundlocal = false;
bool remote = false;
if (boost::get(owner, cur) == transport.rank()) {
BGL_FORALL_OUTEDGES_T(cur, e, g, Graph) {
Vertex u = boost::target(e, g);
if (u == pred) {
foundlocal = true;
break;
}
}
} else if (boost::get(owner, pred) == transport.rank()) {
BGL_FORALL_OUTEDGES_T(pred, e, g, Graph) {
Vertex u = boost::target(e, g);
if (u == cur) {
foundlocal = true;
break;
}
}
} else {
// send message
remote = true;
work_item_t wisend;
wisend.first = wi.second.first;
wisend.second.first = wi.second.second;
wisend.second.second = wi.first;
relax_msg.send(wisend);
}
if ((!remote) && (!foundlocal)) {
std::cout << "[ERROR] Did not find an edge between vertices, ("
<< cur << ", " << pred << "), "
<< "for the triangle (" << succ << ", "
<< cur << ", " << pred << ")" << std::endl;
assert(false);
}
} else {
if (!fedgecur) {
std::cout << "[ERROR] Did not find an edge between vertices, ("
<< succ << ", " << cur << "), "
<< "for the triangle (" << succ << ", "
<< cur << ", " << pred << ")" << std::endl;
}
if (!fedgepred) {
std::cout << "[ERROR] Did not find an edge between vertices, ("
<< succ << ", " << pred << "), "
<< "for the triangle (" << succ << ", "
<< cur << ", " << pred << ")" << std::endl;
}
assert(false);
}
} // end for loop
} // end epoch
}// end of ampp thread id
} // end of operator
private:
int dummy_first_member_for_init_order;
std::vector<work_item_t>& triangles;
amplusplus::transport& transport;
const Graph& g;
const OwnerMap& owner;
int core_offset;
RelaxMessage relax_msg;
boost::shared_ptr<amplusplus::detail::barrier> t_bar;
public:
struct verify_handler {
verify_handler() : self(NULL), g(NULL){}
verify_handler(triangle_verifier& slf,
Graph& gi) : self(&slf),
g(&gi){}
void operator()(const work_item_t& data) const {
Vertex cur = data.first;
Vertex pred = data.second.first;
Vertex succ = data.second.second;
bool foundedge = false;
// is there an edge between cur and pred, then we are good
BGL_FORALL_OUTEDGES_T(cur, e, *g, Graph) {
Vertex u = boost::target(e, *g);
if (u == pred) {
foundedge = true;
break;
}
}
if (!foundedge) {
std::cout << "[ERROR] Did not find an edge between vertices, ("
<< cur << ", " << pred << "), "
<< "for the triangle (" << succ << ", "
<< cur << ", " << pred << ")" << std::endl;
assert(false);
}
}
protected:
triangle_verifier* self;
const Graph* g;
};
};
class TCExecutor {
private:
template <typename Graph, typename work_item_t>
bool verify_tc(amplusplus::transport& trans,
const instance_params& runtime_params,
Graph& g,
std::vector<work_item_t>& triangles) {
time_type start_time = get_time();
trans.set_nthreads(runtime_params.threads);
triangle_verifier<Graph, work_item_t> tv(g, triangles, trans, sched_getcpu());
tv.initialize();
//for each work item check whether there is an edge between them
boost::scoped_array<boost::thread> threads(new boost::thread[runtime_params.threads - 1]);
for (int i = 0; i < runtime_params.threads - 1; ++i) {
boost::thread thr(boost::ref(tv), i + 1);
threads[i].swap(thr);
}
tv(0);
for (int i = 0; i < runtime_params.threads - 1; ++i)
threads[i].join();
trans.set_nthreads(1);
time_type end_time = get_time();
std::cout << "[INFO] Verification took : " << (end_time - start_time)
<< std::endl;
return true;
}
template<typename graph_create_params>
void simple_count_verify(uint64_t triangles,
graph_create_params& gparams,
tc_instance_params& tc_params) {
if (gparams.preprocess) {
if (_RANK == 0) {
std::cout << "Expected triangles : " << tc_params.triangles
<< ", counted : " << triangles
<< std::endl;
assert(triangles == tc_params.triangles);
}
}
}
// Triangle Counting algorithms
template <typename Graph,
typename IdDistribution,
typename MessageGenerator,
typename graph_create_params>
time_type
run_tc(amplusplus::transport& trans,
amplusplus::transport& barrier_trans,
Graph& g,
const IdDistribution& idd,
MessageGenerator msg_gen,
graph_create_params& gparams,
instance_params& runtime_params,
tc_instance_params& tc_params) {
typedef typename boost::graph_traits<Graph>::vertex_descriptor Vertex;
typedef typename boost::graph_traits<Graph>::vertices_size_type vertices_size_type;
typedef typename boost::property_map<Graph, boost::vertex_index_t>::type VertexIndexMap;
if (trans.rank() == 0)
std::cout << "Initializing triangle counting map ..." << std::endl;
trans.set_nthreads(runtime_params.threads);
if (trans.rank() == 0)
std::cout << "Creating algorithm instance ..." << std::endl;
boost::graph::distributed::triangle_counting<Graph,
IdDistribution,
MessageGenerator>
D(g, trans, idd, sched_getcpu(), msg_gen);
trans.set_nthreads(1);
{ amplusplus::scoped_epoch epoch(barrier_trans); }
// Many threads now
trans.set_nthreads(runtime_params.threads);
if (trans.rank() == 0)
std::cout << "Invoking algorithm ..." << std::endl;
boost::scoped_array<boost::thread> threads(new boost::thread[runtime_params.threads - 1]);
for (int i = 0; i < runtime_params.threads - 1; ++i) {
boost::thread thr(boost::ref(D), i + 1);
threads[i].swap(thr);
}
D(0);
for (int i = 0; i < runtime_params.threads - 1; ++i)
threads[i].join();
time_type end = get_time();
if (trans.rank() == 0)
std::cout << "Algorithm done ..." << std::endl;
time_type start = D.get_start_time();
D.print_triangle_counts();
// Back to one thread
trans.set_nthreads(1);
clear_thread_core_data();
#ifdef TRIANGLE_ENUMERATE
typedef typename boost::graph::distributed::triangle_counting<Graph,
IdDistribution,
MessageGenerator>::work_item_t work_item_t;
std::vector<work_item_t> local_triangles;
D.get_local_triangles(local_triangles);
#endif
// Calculate number of triangles
uint64_t globaltraingles = 0;
uint64_t localtriangles = D.get_local_triangle_counts();
// MPI reduce to find the all triangles
MPI_Reduce(&localtriangles, &globaltraingles,
1, MPI_LONG_LONG_INT , MPI_SUM, 0, MPI_COMM_WORLD);
if (tc_params.verify) {
if (trans.rank()==0)
std::cout << "Verifying counts ..." << std::endl;
simple_count_verify(globaltraingles, gparams, tc_params);
#ifdef TRIANGLE_ENUMERATE
if (!verify_tc<Graph, work_item_t>(trans, runtime_params,
g, local_triangles)) {
std::cout << "Triangle counting Verification Failed" << std::endl;
assert(false);
return 0;
}
#endif
}
if (trans.rank() == 0)
std::cout << "Total number of triangles counted : " << globaltraingles
<< ", in " << (end-start) << " time." << std::endl;
return D.get_elapsed_time();
}
// Triangle Counting algorithms
template <typename Graph,
typename IdDistribution,
typename MessageGenerator,
typename graph_create_params>
time_type
run_tc_blocked(amplusplus::transport& trans,
amplusplus::transport& barrier_trans,
Graph& g,
const IdDistribution& idd,
MessageGenerator msg_gen,
graph_create_params& gparams,
instance_params& runtime_params,
tc_instance_params& tc_params) {
typedef typename boost::graph_traits<Graph>::vertex_descriptor Vertex;
typedef typename boost::graph_traits<Graph>::vertices_size_type vertices_size_type;
typedef typename boost::property_map<Graph, boost::vertex_index_t>::type VertexIndexMap;
typedef std::vector<Vertex> InternalContainerType;
typedef std::vector<InternalContainerType> NeighborsType;
typedef boost::iterator_property_map<typename NeighborsType::iterator, VertexIndexMap> NeighborsMap;
NeighborsType vec_predecessors(num_vertices(g), InternalContainerType(0));
NeighborsMap predecessor_map(vec_predecessors.begin(), get(boost::vertex_index, g));
NeighborsType vec_successors(num_vertices(g), InternalContainerType(0));
NeighborsMap successor_map(vec_successors.begin(), get(boost::vertex_index, g));
if (trans.rank() == 0)
std::cout << "[INFO] Initializing triangle counting map ..." << std::endl;
trans.set_nthreads(runtime_params.threads);
if (trans.rank() == 0)
std::cout << "[INFO] Creating algorithm instance ..." << std::endl;
boost::graph::distributed::triangle_counting_blocked<Graph,
IdDistribution,
NeighborsMap>
D(g, trans, idd,
sched_getcpu(),
tc_params.block_size,
tc_params.suc_block_size,
runtime_params.coalescing,
predecessor_map,
successor_map);
trans.set_nthreads(1);
{ amplusplus::scoped_epoch epoch(barrier_trans); }
// Many threads now
trans.set_nthreads(runtime_params.threads);
if (trans.rank() == 0)
std::cout << "[INFO] Invoking algorithm ..." << std::endl;
boost::scoped_array<boost::thread> threads(new boost::thread[runtime_params.threads - 1]);
for (int i = 0; i < runtime_params.threads - 1; ++i) {
boost::thread thr(boost::ref(D), i + 1);
threads[i].swap(thr);
}
D(0);
for (int i = 0; i < runtime_params.threads - 1; ++i)
threads[i].join();
time_type end = get_time();
if (trans.rank() == 0)
std::cout << "[INFO] Algorithm done ..." << std::endl;
time_type start = D.get_start_time();
//D.print_triangle_counts();
//std::cout << trans.rank() << " Done printing counts" << std::endl;
// Back to one thread
trans.set_nthreads(1);
clear_thread_core_data();
#ifdef TRIANGLE_ENUMERATE
typedef typename boost::graph::distributed::triangle_counting<Graph,
IdDistribution,
MessageGenerator>::work_item_t work_item_t;
std::vector<work_item_t> local_triangles;
D.get_local_triangles(local_triangles);
#endif
// Calculate number of triangles
uint64_t globaltraingles = 0;
uint64_t localtriangles = D.get_local_triangle_counts();
// MPI reduce to find the all triangles
MPI_Reduce(&localtriangles, &globaltraingles,
1, MPI_LONG_LONG_INT , MPI_SUM, 0, MPI_COMM_WORLD);
if (trans.rank()==0) {
if (tc_params.verify) {
std::cout << "Verifying counts ..." << std::endl;
simple_count_verify(globaltraingles, gparams, tc_params);
#ifdef TRIANGLE_ENUMERATE
if (!verify_tc<Graph, work_item_t>(trans, runtime_params,
g, local_triangles)) {
std::cout << "Triangle counting Verification Failed" << std::endl;
assert(false);
return 0;
}
#endif
}
std::cout << "Total number of triangles counted : " << globaltraingles
<< ", in " << (end-start) << " time." << std::endl;
}
#ifdef TC_STATS
D.print_stats();
#endif
return D.get_elapsed_time();
}
// Triangle Counting algorithms
template <typename Graph,
typename IdDistribution,
typename MessageGenerator,
typename graph_create_params>
time_type
run_tc_sps(amplusplus::transport& trans,
amplusplus::transport& barrier_trans,
Graph& g,
const IdDistribution& idd,
MessageGenerator msg_gen,
graph_create_params& gparams,
instance_params& runtime_params,
tc_instance_params& tc_params) {
typedef typename boost::graph_traits<Graph>::vertex_descriptor Vertex;
typedef typename boost::graph_traits<Graph>::vertices_size_type vertices_size_type;
typedef typename boost::property_map<Graph, boost::vertex_index_t>::type VertexIndexMap;
typedef std::vector<Vertex> InternalContainerType;
typedef std::vector<InternalContainerType> NeighborsType;
typedef boost::iterator_property_map<typename NeighborsType::iterator, VertexIndexMap> NeighborsMap;
NeighborsType vec_predecessors(num_vertices(g), InternalContainerType(0));
NeighborsMap predecessor_map(vec_predecessors.begin(), get(boost::vertex_index, g));
NeighborsType vec_successors(num_vertices(g), InternalContainerType(0));
NeighborsMap successor_map(vec_successors.begin(), get(boost::vertex_index, g));
if (trans.rank() == 0)
std::cout << "[INFO] Initializing triangle counting map ..." << std::endl;
trans.set_nthreads(runtime_params.threads);
if (trans.rank() == 0)
std::cout << "[INFO] Creating algorithm instance ..." << std::endl;
boost::graph::distributed::triangle_counting_sps<Graph,
IdDistribution,
NeighborsMap>
D(g, trans, idd,
sched_getcpu(),
tc_params.block_size,
tc_params.suc_block_size,
runtime_params.coalescing,
predecessor_map,
successor_map);
trans.set_nthreads(1);
{ amplusplus::scoped_epoch epoch(barrier_trans); }
// Many threads now
trans.set_nthreads(runtime_params.threads);
if (trans.rank() == 0)
std::cout << "[INFO] Invoking algorithm ..." << std::endl;
boost::scoped_array<boost::thread> threads(new boost::thread[runtime_params.threads - 1]);
for (int i = 0; i < runtime_params.threads - 1; ++i) {
boost::thread thr(boost::ref(D), i + 1);
threads[i].swap(thr);
}
D(0);
for (int i = 0; i < runtime_params.threads - 1; ++i)
threads[i].join();
time_type end = get_time();
if (trans.rank() == 0)
std::cout << "[INFO] Algorithm done ..." << std::endl;
time_type start = D.get_start_time();
//D.print_triangle_counts();
//std::cout << trans.rank() << " Done printing counts" << std::endl;
// Back to one thread
trans.set_nthreads(1);
clear_thread_core_data();
#ifdef TRIANGLE_ENUMERATE
typedef typename boost::graph::distributed::triangle_counting<Graph,
IdDistribution,
MessageGenerator>::work_item_t work_item_t;
std::vector<work_item_t> local_triangles;
D.get_local_triangles(local_triangles);
#endif
// Calculate number of triangles
uint64_t globaltraingles = 0;
uint64_t localtriangles = D.get_local_triangle_counts();
// MPI reduce to find the all triangles
MPI_Reduce(&localtriangles, &globaltraingles,
1, MPI_LONG_LONG_INT , MPI_SUM, 0, MPI_COMM_WORLD);
if (trans.rank()==0) {
if (tc_params.verify) {
std::cout << "Verifying counts ..." << std::endl;
simple_count_verify(globaltraingles, gparams, tc_params);
#ifdef TRIANGLE_ENUMERATE
if (!verify_tc<Graph, work_item_t>(trans, runtime_params,
g, local_triangles)) {
std::cout << "Triangle counting Verification Failed" << std::endl;
assert(false);
return 0;
}
#endif
}
std::cout << "Total number of triangles counted : " << globaltraingles
<< ", in " << (end-start) << " time." << std::endl;
}
#ifdef TC_STATS
D.print_stats();
#endif
return D.get_elapsed_time();
}
// Triangle Counting algorithms
template <typename Graph,
typename IdDistribution,
typename MessageGenerator,
typename graph_create_params>
time_type
run_tc_sucsuc(amplusplus::transport& trans,
amplusplus::transport& barrier_trans,
Graph& g,
const IdDistribution& idd,
MessageGenerator msg_gen,
graph_create_params& gparams,
instance_params& runtime_params,
tc_instance_params& tc_params) {
typedef typename boost::graph_traits<Graph>::vertex_descriptor Vertex;
typedef typename boost::graph_traits<Graph>::vertices_size_type vertices_size_type;
typedef typename boost::property_map<Graph, boost::vertex_index_t>::type VertexIndexMap;
typedef std::vector<Vertex> InternalContainerType;
typedef std::vector<InternalContainerType> NeighborsType;
typedef boost::iterator_property_map<typename NeighborsType::iterator, VertexIndexMap> NeighborsMap;
NeighborsType vec_successors(num_vertices(g), InternalContainerType(0));
NeighborsMap successor_map(vec_successors.begin(), get(boost::vertex_index, g));
if (trans.rank() == 0)
std::cout << "Initializing triangle counting map ..." << std::endl;
trans.set_nthreads(runtime_params.threads);
if (trans.rank() == 0)
std::cout << "Creating algorithm instance ..." << std::endl;
boost::graph::distributed::triangle_counting_sucsuc<Graph,
IdDistribution,
NeighborsMap>
D(g, trans, idd,
sched_getcpu(),
tc_params.block_size,
tc_params.suc_block_size,
runtime_params.coalescing,
successor_map);
trans.set_nthreads(1);
{ amplusplus::scoped_epoch epoch(barrier_trans); }
// Many threads now
trans.set_nthreads(runtime_params.threads);
if (trans.rank() == 0)
std::cout << "Invoking algorithm ..." << std::endl;
boost::scoped_array<boost::thread> threads(new boost::thread[runtime_params.threads - 1]);
for (int i = 0; i < runtime_params.threads - 1; ++i) {
boost::thread thr(boost::ref(D), i + 1);
threads[i].swap(thr);
}
D(0);
for (int i = 0; i < runtime_params.threads - 1; ++i)
threads[i].join();
time_type end = get_time();
if (trans.rank() == 0)
std::cout << "Algorithm done ..." << std::endl;
time_type start = D.get_start_time();
D.print_triangle_counts();
std::cout << trans.rank() << " Done printing counts" << std::endl;
// Back to one thread
trans.set_nthreads(1);
clear_thread_core_data();
#ifdef TRIANGLE_ENUMERATE
typedef typename boost::graph::distributed::triangle_counting<Graph,
IdDistribution,
MessageGenerator>::work_item_t work_item_t;
std::vector<work_item_t> local_triangles;
D.get_local_triangles(local_triangles);
#endif
// Calculate number of triangles