20 const UInt_t nNumbers = 20000000U;
23 const UInt_t nWorkers = 4U;
26 const auto workSize = nNumbers / nWorkers;
35 Int_t mt101_fillNtuples()
45 TFile ofile(
"mt101_singleCore.root",
"RECREATE");
46 TNtuple randomNumbers(
"singleCore",
"Random Numbers",
"r");
47 fillRandom(randomNumbers, rndm, nNumbers);
48 randomNumbers.Write();
58 auto workItem = [](
UInt_t workerID) {
61 TFile ofile(
Form(
"mt101_multiCore_%u.root", workerID),
"RECREATE");
62 TNtuple workerRandomNumbers(
"multiCore",
"Random Numbers",
"r");
63 fillRandom(workerRandomNumbers, workerRndm, workSize);
64 workerRandomNumbers.Write();
69 std::vector<std::thread> workers;
73 workers.emplace_back(workItem, workerID);
77 for (
auto &&worker : workers)