extern std::map<std::string, simgrid::s4u::Host*> host_list;
class RelayRunner {
-public:
size_t task_comm_size = 1000000; /* The token is 1MB long*/
simgrid::s4u::MailboxPtr my_mailbox;
simgrid::s4u::MailboxPtr neighbor_mailbox;
unsigned int rank = 0;
+
+public:
explicit RelayRunner() = default;
void operator()()