int main(int argc, char* argv[]){
arg_t arg;
parse_arg(arg, argc, argv);
std::cout << "[INFO ] Creating column ..." << std::endl;
Column* column = new Column(arg.coltype, arg.nbits, arg.size);
std::cout << "[INFO ] Creating bit vector ..." << std::endl;
BitVector* bitvector = new BitVector(column);
std::cout << "[INFO ] Populating column with random values ..." << std::endl;
auto dice = std::bind(std::uniform_int_distribution<WordUnit>(
std::numeric_limits<WordUnit>::min(),
std::numeric_limits<WordUnit>::max()),
std::default_random_engine(std::time(0)));
WordUnit mask = (1ULL << arg.nbits) - 1;
for(size_t i=0; i < arg.size; i++){
column->SetTuple(i, dice() & mask);
}
std::cout << "[INFO ] omp_max_threads = " << omp_get_max_threads() << std::endl;
std::cout << "[INFO ] Executing scan ..." << std::endl;
HybridTimer t1;
t1.Start();
for(size_t r = 0; r < arg.repeat; r++){
column->Scan(Comparator::kLess,
static_cast<WordUnit>(mask*arg.selectivity),
bitvector,
Bitwise::kSet);
}
t1.Stop();
std::cout << "Wall time (sec), CPU cost (cycle/value)" << std::endl;
std::cout << t1.GetSeconds()/arg.repeat << ", "
<< double(t1.GetNumCycles()/arg.repeat)/arg.size
<< std::endl;
std::cout << "[INFO ] Releasing memory ..." << std::endl;
delete column;
delete bitvector;
}
