//TBB
auto worker = [&] (tbb::blocked_range<int> range) {

    //allocate memory here, which do_stuff() needs

    auto do_stuff = [&] (...)  { ... };

    for(auto i = range.begin(); i != range.end(); ++i) {
        container[i] = do_stuff(); // just some example
    }

}

tbb::parallel_for(tbb::blocked_range<int>(0, 1000), worker);

//PPL

auto worker = [&] (int i) {

    do_stuff(i);

}

ppl::parallel_for(0, 1000, worker);