X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/loba.git/blobdiff_plain/147d0e88c4da14c801d15e0875bedb474180bea2..HEAD:/process.h diff --git a/process.h b/process.h index aa1e032..f01c3c6 100644 --- a/process.h +++ b/process.h @@ -1,27 +1,206 @@ #ifndef PROCESS_H #define PROCESS_H +#include +#include +#include #include +#include #include #include "communicator.h" +#include "misc.h" +#include "msg_thread.h" #include "neighbor.h" +#include "options.h" +#include "simgrid_features.h" +#include "synchro.h" class process { public: - process(int argc, char *argv[]); - ~process() { }; + static void set_proc_mutex(mutex_t* m) { proc_mutex = m; } + + // Note: normally used with proc_mutex locked. + static double get_total_load_init() { return total_load_init; } + static double get_total_load_running() { return total_load_running; } + static double get_total_load_exit() { return total_load_exit; } + + process(int argc, char* argv[]); + virtual ~process(); + + double get_real_load() const { return real_load; } + double get_comp_amount() const { return acc.comp_amount; } + unsigned get_comp_iter() const { return comp_iter; } + unsigned get_all_comp_iter() const { return all_comp_iter; } + double get_iter_deviation() const; + double get_data_send_amount() const { return acc.data_send.amount; } + double get_data_recv_amount() const { return acc.data_recv.amount; } + unsigned get_data_send_count() const { return acc.data_send.count; } + unsigned get_data_recv_count() const { return acc.data_recv.count; } + double get_ctrl_send_amount() const { return acc.ctrl_send.amount; } + double get_ctrl_recv_amount() const { return acc.ctrl_recv.amount; } + unsigned get_ctrl_send_count() const { return acc.ctrl_send.count; } + unsigned get_ctrl_recv_count() const { return acc.ctrl_recv.count; } + double get_idle_duration() const { return idle_duration; } + double get_convergence() const { return convergence; } + int run(); +protected: + typedef std::vector neigh_type; + typedef std::vector pneigh_type; + + pneigh_type pneigh; // list of pointers to neighbors that + // we are free to reorder + + // Get and set current load, which may be real load, or expected + // load if opt::bookkeeping is true. + double get_load() const { return expected_load; } + + // The load balancing algorithm comes here... + virtual void load_balance(); + + // Register some amount of load to send to given neighbor. + void send(neighbor& nb, double amount); + void send(neighbor* nb, double amount) { send(*nb, amount); } + + // Sort pneigh by applying comp to their loads + template + void pneigh_sort_by_load(const Compare& comp); + + // Calls neighbor::print(verbose, logp, cat) for each member of neigh. + void print_loads(bool verbose = false, + e_xbt_log_priority_t logp = xbt_log_priority_info, + xbt_log_category_t cat = _XBT_LOGV(default)) const; + + // Calls neighbor::print(verbose, logp, cat) for each member of pneigh. + void print_loads_p(bool verbose = false, + e_xbt_log_priority_t logp = xbt_log_priority_info, + xbt_log_category_t cat = _XBT_LOGV(default)) const; + private: - communicator comm; - std::vector neigh; - double load; + static mutex_t *proc_mutex; // protect access to global variables + // (must be set before constructing + // the first object!) + + static double total_load_init; // sum of process loads at init + static double total_load_running; // sum of loads while running + static double total_load_exit; // sum of process loads at exit + + static int process_counter; + static double total_load_average; + static double average_load_ratio; + static double load_diff_threshold; + + static std::atomic convergence_counter; + + typedef std::unordered_map rev_neigh_type; + neigh_type neigh; // list of neighbors (do not alter + // after construction!) + rev_neigh_type rev_neigh; // map msg_host_t -> neighbor - void receive(); - void compute(); - void print_loads(e_xbt_log_priority_t logp = xbt_log_priority_info); + communicator comm; // communicator for this process + int ctrl_close_pending; // number of "close" messages to wait + // on ctrl channel + int data_close_pending; // number of "close" messages to wait + // on data channel + bool close_received; // true if we received a "close" message + bool finalizing; // true when finalize() is running + + unsigned lb_iter; // counter of load-balancing iterations + unsigned comp_iter; // counter of computation iterations + unsigned all_comp_iter; // counter of computation iterations + // (counting empty iterations too) + + double prev_load_broadcast; // used to ensure that we do not send + // a same information messages + double real_load; // current load + double expected_load; // expected load in bookkeeping mode + double received_load; // load received from neighbors + + double idle_duration; // how long we had nothing to compute + double convergence; // date when convergence was achieved, or -1.0 + int local_convergence_counter; // number of iterations since convergence + + mutex_t mutex; // synchronization between threads + condition_t cond; + + struct mesg_accounting { + double amount; // sum of message size + unsigned count; // number of messages + mesg_accounting(): amount(0.0), count(0) { } + }; + struct accounting { + double comp_amount; // total computing done so far (flops) + mesg_accounting data_send; // data messages sent + mesg_accounting data_recv; // data messages received + mesg_accounting ctrl_send; // ctrl message sent + mesg_accounting ctrl_recv; // ctrl message received + accounting(): comp_amount(0.0) { } + }; + accounting acc; // use a structure so that it is + // automatically initialized a + // construction + + void add_comp_amount(double amount) { acc.comp_amount += amount; } + void add_data_send_mesg(double amount) { + ++acc.data_send.count; + acc.data_send.amount += amount; + } + void add_data_recv_mesg(double amount) { + ++acc.data_recv.count; + acc.data_recv.amount += amount; + } + void add_ctrl_send_mesg(double amount) { + ++acc.ctrl_send.count; + acc.ctrl_send.amount += amount; + } + void add_ctrl_recv_mesg(double amount) { + ++acc.ctrl_recv.count; + acc.ctrl_recv.amount += amount; + } + + // Load-balancing loop + msg_thread* lb_thread; + void load_balance_loop(); + + // Simulate computation loop + void compute_loop(); + + // Check for convergence + void convergence_check(); + + // Check if we need to stop + bool still_running(); + + // Returns the sum of "to_send" for all neighbors. + double get_sum_of_to_send() const; + + // Compute load_to_send (for data_send), subject to the execution parameters + static double compute_load_to_send(double desired); + + // Send procedures + void ctrl_send(neighbor& nb); + void data_send(neighbor& nb); + void ctrl_close(neighbor& nb); + void data_close(neighbor& nb); + + // Receive procedure + // Parameter "timeout" may be 0 for non-blocking operation, -1 for + // infinite waiting, or any positive timeout. + void ctrl_receive(double timeout); + void data_receive(double timeout); + void handle_message(message* msg, msg_host_t from); }; +template +void process::pneigh_sort_by_load(const Compare& comp) +{ + std::sort(pneigh.begin(), pneigh.end(), + [&comp](const neighbor* a, const neighbor* b) { + return comp(a->get_load(), b->get_load()); + }); +} + #endif // !PROCESS_H // Local variables: