size_t StartChecking(int expectedSum, std::vector<int>& numbers){
    int tid[1];
    // static_cast<char*>("child") --> warning: deprecated conversion from string constant to 'char*'
    if (pvm_spawn((char*)"child", 0, PvmTaskDefault, 0, 1, tid) == 1){
        std::cout << "Successfully started, initing send" << std::endl;
        pvm_initsend(PvmDataDefault);

        std::cout << "Packing data" << std::endl;
        pvm_pkint(&expectedSum, 1, 1);
        int tmpSize = static_cast<int>(numbers.size());
        pvm_pkint(&tmpSize, 1, 1);
        pvm_pkint(numbers.data(), tmpSize, 1);

        std::cout << "Packing done" << std::endl;
        std::cout << "Sending Data to: " << *tid << std::endl;
        pvm_send(*tid, 1);
        std::cout << "Data sent" << std::endl;
    }else{
        std::cout << "Error" << std::endl;
    }
    return *tid;
}