+
+/*
+ * Network with improved management of tasks, IM (Improved Management).
+ * Uses a heap to store actions so that the share_resources is faster.
+ * This model automatically sets the selective update flag to 1 and is
+ * highly dependent on the maxmin lmm module.
+ */
+
+/* Copyright (c) 2009, 2010, 2011. The SimGrid Team.
+ * All rights reserved. */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#include "xbt/log.h"
+#include "xbt/str.h"
+#include "surf_private.h"
+#include "xbt/dict.h"
+#include "maxmin_private.h"
+
+#undef GENERIC_ACTION
+#define GENERIC_ACTION(action) action->generic_action
+
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network_im, surf,
+ "Logging specific to the SURF network module");
+
+
+enum heap_action_type{
+ LATENCY = 100,
+ MAX_DURATION,
+ NORMAL,
+ NOTSET
+};
+
+typedef struct surf_action_network_CM02_im {
+ s_surf_action_t generic_action;
+ s_xbt_swag_hookup_t action_list_hookup;
+ double latency;
+ double lat_current;
+ double weight;
+ lmm_variable_t variable;
+ double rate;
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+ int latency_limited;
+#endif
+ int suspended;
+#ifdef HAVE_TRACING
+ char *src_name;
+ char *dst_name;
+#endif
+ int index_heap;
+ enum heap_action_type hat;
+ double last_update;
+} s_surf_action_network_CM02_im_t, *surf_action_network_CM02_im_t;
+
+
+typedef struct network_link_CM02_im {
+ s_surf_resource_lmm_t lmm_resource; /* must remain first to be added to a trace */
+
+ /* Using this object with the public part of
+ model does not make sense */
+ double lat_current;
+ tmgr_trace_event_t lat_event;
+} s_link_CM02_im_t, *link_CM02_im_t;
+
+
+
+
+
+
+
+
+extern surf_model_t surf_network_model;
+static lmm_system_t network_maxmin_system = NULL;
+static void (*network_solve) (lmm_system_t) = NULL;
+
+extern double sg_latency_factor;
+extern double sg_bandwidth_factor;
+extern double sg_weight_S_parameter;
+
+extern double sg_tcp_gamma;
+extern int sg_network_fullduplex;
+
+
+static void im_net_action_recycle(surf_action_t action);
+static int im_net_get_link_latency_limited(surf_action_t action);
+static int im_net_action_is_suspended(surf_action_t action);
+static double im_net_action_get_remains(surf_action_t action);
+static void im_net_action_set_max_duration(surf_action_t action, double duration);
+static void surf_network_model_init_CM02_im(const char *filename);
+static void im_net_update_actions_state(double now, double delta);
+static void update_action_remaining(double now);
+
+static xbt_swag_t im_net_modified_set = NULL;
+static xbt_heap_t im_net_action_heap = NULL;
+xbt_swag_t keep_track = NULL;
+extern int sg_maxmin_selective_update;
+
+/* added to manage the communication action's heap */
+static void im_net_action_update_index_heap(void *action, int i)
+{
+ ((surf_action_network_CM02_im_t) action)->index_heap = i;
+}
+
+/* insert action on heap using a given key and a hat (heap_action_type)
+ * a hat can be of three types for communications:
+ *
+ * NORMAL = this is a normal heap entry stating the date to finish transmitting
+ * LATENCY = this is a heap entry to warn us when the latency is payed
+ * MAX_DURATION =this is a heap entry to warn us when the max_duration limit is reached
+ */
+static void heap_insert(surf_action_network_CM02_im_t action, double key, enum heap_action_type hat){
+ action->hat = hat;
+ xbt_heap_push(im_net_action_heap, action, key);
+}
+
+static void heap_remove(surf_action_network_CM02_im_t action){
+ action->hat = NONE;
+ if(((surf_action_network_CM02_im_t) action)->index_heap >= 0){
+ xbt_heap_remove(im_net_action_heap,action->index_heap);
+ }
+}
+
+/******************************************************************************/
+/* Factors callbacks */
+/******************************************************************************/
+static double im_constant_latency_factor(double size)
+{
+ return sg_latency_factor;
+}
+
+static double im_constant_bandwidth_factor(double size)
+{
+ return sg_bandwidth_factor;
+}
+
+static double im_constant_bandwidth_constraint(double rate, double bound,
+ double size)
+{
+ return rate;
+}
+
+
+static double (*latency_factor_callback) (double) =
+ &im_constant_latency_factor;
+static double (*bandwidth_factor_callback) (double) =
+ &im_constant_bandwidth_factor;
+static double (*bandwidth_constraint_callback) (double, double, double) =
+ &im_constant_bandwidth_constraint;
+
+
+static link_CM02_im_t im_net_link_new(char *name,
+ double bw_initial,
+ tmgr_trace_t bw_trace,
+ double lat_initial,
+ tmgr_trace_t lat_trace,
+ e_surf_resource_state_t
+ state_initial,
+ tmgr_trace_t state_trace,
+ e_surf_link_sharing_policy_t
+ policy, xbt_dict_t properties)
+{
+ link_CM02_im_t nw_link = (link_CM02_im_t)
+ surf_resource_lmm_new(sizeof(s_link_CM02_im_t),
+ surf_network_model, name, properties,
+ network_maxmin_system,
+ sg_bandwidth_factor * bw_initial,
+ history,
+ state_initial, state_trace,
+ bw_initial, bw_trace);
+
+ xbt_assert1(!xbt_dict_get_or_null
+ (surf_network_model->resource_set, name),
+ "Link '%s' declared several times in the platform file.",
+ name);
+
+ nw_link->lat_current = lat_initial;
+ if (lat_trace)
+ nw_link->lat_event =
+ tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
+
+ if (policy == SURF_LINK_FATPIPE)
+ lmm_constraint_shared(nw_link->lmm_resource.constraint);
+
+ xbt_dict_set(surf_network_model->resource_set, name, nw_link,
+ surf_resource_free);
+#ifdef HAVE_TRACING
+ TRACE_surf_link_declaration(nw_link, name, bw_initial, lat_initial);
+#endif
+
+ return nw_link;
+}
+
+static void im_net_parse_link_init(void)
+{
+ char *name_link;
+ double bw_initial;
+ tmgr_trace_t bw_trace;
+ double lat_initial;
+ tmgr_trace_t lat_trace;
+ e_surf_resource_state_t state_initial_link = SURF_RESOURCE_ON;
+ e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
+ tmgr_trace_t state_trace;
+ DEBUG0("link_CM02_im");
+ name_link = xbt_strdup(A_surfxml_link_id);
+ surf_parse_get_double(&bw_initial, A_surfxml_link_bandwidth);
+ bw_trace = tmgr_trace_new(A_surfxml_link_bandwidth_file);
+ surf_parse_get_double(&lat_initial, A_surfxml_link_latency);
+ lat_trace = tmgr_trace_new(A_surfxml_link_latency_file);
+
+ xbt_assert0((A_surfxml_link_state == A_surfxml_link_state_ON)
+ || (A_surfxml_link_state ==
+ A_surfxml_link_state_OFF), "Invalid state");
+ if (A_surfxml_link_state == A_surfxml_link_state_ON)
+ state_initial_link = SURF_RESOURCE_ON;
+ else if (A_surfxml_link_state == A_surfxml_link_state_OFF)
+ state_initial_link = SURF_RESOURCE_OFF;
+
+ if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_SHARED)
+ policy_initial_link = SURF_LINK_SHARED;
+ else
+ {
+ if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_FATPIPE)
+ policy_initial_link = SURF_LINK_FATPIPE;
+ else if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_FULLDUPLEX)
+ policy_initial_link = SURF_LINK_FULLDUPLEX;
+ }
+
+ state_trace = tmgr_trace_new(A_surfxml_link_state_file);
+
+ if(policy_initial_link == SURF_LINK_FULLDUPLEX)
+ {
+ im_net_link_new(bprintf("%s_UP",name_link), bw_initial, bw_trace,
+ lat_initial, lat_trace, state_initial_link, state_trace,
+ policy_initial_link, xbt_dict_new());
+ im_net_link_new(bprintf("%s_DOWN",name_link), bw_initial, bw_trace,
+ lat_initial, lat_trace, state_initial_link, state_trace,
+ policy_initial_link, xbt_dict_new());
+ }
+ else
+ {
+ im_net_link_new(name_link, bw_initial, bw_trace,
+ lat_initial, lat_trace, state_initial_link, state_trace,
+ policy_initial_link, xbt_dict_new());
+ }
+
+}
+
+static void im_net_create_resource(char *name,
+ double bw_initial,
+ tmgr_trace_t bw_trace,
+ double lat_initial,
+ tmgr_trace_t lat_trace,
+ e_surf_resource_state_t
+ state_initial,
+ tmgr_trace_t state_trace,
+ e_surf_link_sharing_policy_t policy,
+ xbt_dict_t properties)
+{
+ im_net_link_new(name, bw_initial, bw_trace,
+ lat_initial, lat_trace, state_initial, state_trace,
+ policy, xbt_dict_new());
+}
+
+static void im_net_add_traces(void)
+{
+ xbt_dict_cursor_t cursor = NULL;
+ char *trace_name, *elm;
+
+ static int called = 0;
+ if (called)
+ return;
+ called = 1;
+
+ /* connect all traces relative to network */
+ xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
+ tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
+ link_CM02_im_t link =
+ xbt_dict_get_or_null(surf_network_model->resource_set, elm);
+
+ xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
+ trace_name, elm);
+ xbt_assert2(trace,
+ "Cannot connect trace %s to link %s: trace undefined",
+ trace_name, elm);
+
+ link->lmm_resource.state_event =
+ tmgr_history_add_trace(history, trace, 0.0, 0, link);
+ }
+
+ xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
+ tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
+ link_CM02_im_t link =
+ xbt_dict_get_or_null(surf_network_model->resource_set, elm);
+
+ xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
+ trace_name, elm);
+ xbt_assert2(trace,
+ "Cannot connect trace %s to link %s: trace undefined",
+ trace_name, elm);
+
+ link->lmm_resource.power.event =
+ tmgr_history_add_trace(history, trace, 0.0, 0, link);
+ }
+
+ xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
+ tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
+ link_CM02_im_t link =
+ xbt_dict_get_or_null(surf_network_model->resource_set, elm);
+
+ xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
+ trace_name, elm);
+ xbt_assert2(trace,
+ "Cannot connect trace %s to link %s: trace undefined",
+ trace_name, elm);
+
+ link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
+ }
+}
+
+static void im_net_define_callbacks(const char *file)
+{
+ /* Figuring out the network links */
+ surfxml_add_callback(STag_surfxml_link_cb_list, &im_net_parse_link_init);
+ surfxml_add_callback(ETag_surfxml_platform_cb_list, &im_net_add_traces);
+}
+
+static int im_net_resource_used(void *resource_id)
+{
+ return lmm_constraint_used(network_maxmin_system,
+ ((surf_resource_lmm_t)
+ resource_id)->constraint);
+}
+
+static int im_net_action_unref(surf_action_t action)
+{
+ action->refcount--;
+ if (!action->refcount) {
+ xbt_swag_remove(action, action->state_set);
+ if (((surf_action_network_CM02_im_t) action)->variable){
+ lmm_variable_free(network_maxmin_system,
+ ((surf_action_network_CM02_im_t) action)->variable);
+ }
+ // remove action from the heap
+ heap_remove((surf_action_network_CM02_im_t) action);
+
+ xbt_swag_remove(action, im_net_modified_set);
+#ifdef HAVE_TRACING
+ xbt_free(((surf_action_network_CM02_im_t) action)->src_name);
+ xbt_free(((surf_action_network_CM02_im_t) action)->dst_name);
+ if (action->category)
+ xbt_free(action->category);
+#endif
+ free(action);
+ action = NULL;
+ return 1;
+ }
+ return 0;
+}
+
+
+
+static void im_net_action_cancel(surf_action_t action)
+{
+ surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
+
+ xbt_swag_remove(action, im_net_modified_set);
+ // remove action from the heap
+ heap_remove((surf_action_network_CM02_im_t) action);
+}
+
+void im_net_action_recycle(surf_action_t action)
+{
+ return;
+}
+
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+int im_net_get_link_latency_limited(surf_action_t action)
+{
+ return action->latency_limited;
+}
+#endif
+
+double im_net_action_get_remains(surf_action_t action)
+{
+ /* update remains before return it */
+ update_action_remaining(surf_get_clock());
+ return action->remains;
+}
+
+static void update_action_remaining(double now){
+ surf_action_network_CM02_im_t action = NULL;
+ double delta = 0.0;
+
+ xbt_swag_foreach(action, im_net_modified_set) {
+
+ if(action->suspended != 0){
+ continue;
+ }
+
+ delta = now - action->last_update;
+
+ double_update(&(action->generic_action.remains),
+ lmm_variable_getvalue(action->variable) * delta);
+
+ if (action->generic_action.max_duration != NO_MAX_DURATION)
+ double_update(&(action->generic_action.max_duration), delta);
+
+ if ((action->generic_action.remains <= 0) &&
+ (lmm_get_variable_weight(action->variable) > 0)) {
+ action->generic_action.finish = surf_get_clock();
+ surf_network_model->action_state_set((surf_action_t) action,
+ SURF_ACTION_DONE);
+ heap_remove(action);
+ } else if ((action->generic_action.max_duration != NO_MAX_DURATION)
+ && (action->generic_action.max_duration <= 0)) {
+ action->generic_action.finish = surf_get_clock();
+ surf_network_model->action_state_set((surf_action_t) action,
+ SURF_ACTION_DONE);
+ heap_remove(action);
+ }
+
+ action->last_update = now;
+ }
+}
+
+static double im_net_share_resources(double now)
+{
+ surf_action_network_CM02_im_t action = NULL;
+ double min=-1;
+ double value;
+
+ DEBUG1("Before share resources, the size of modified actions set is %d", xbt_swag_size(im_net_modified_set));
+ update_action_remaining(now);
+
+ lmm_solve(network_maxmin_system);
+
+ DEBUG1("After share resources, The size of modified actions set is %d", xbt_swag_size(im_net_modified_set));
+
+ xbt_swag_foreach(action, im_net_modified_set) {
+ if (GENERIC_ACTION(action).state_set != surf_network_model->states.running_action_set){
+ continue;
+ }
+
+ /* bogus priority, skip it */
+ if (GENERIC_ACTION(action).priority <= 0){
+ continue;
+ }
+
+ min = -1;
+ value = lmm_variable_getvalue(action->variable);
+ if (value > 0) {
+ if (GENERIC_ACTION(action).remains > 0) {
+ value = GENERIC_ACTION(action).remains / value;
+ min = now + value;
+ } else {
+ value = 0.0;
+ min = now;
+ }
+ }
+
+ if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
+ && (min == -1
+ || GENERIC_ACTION(action).start +
+ GENERIC_ACTION(action).max_duration < min)){
+ min = GENERIC_ACTION(action).start +
+ GENERIC_ACTION(action).max_duration;
+ }
+
+ DEBUG4("Action(%p) Start %lf Finish %lf Max_duration %lf", action,
+ GENERIC_ACTION(action).start, now + value,
+ GENERIC_ACTION(action).max_duration);
+
+
+
+ if (action->index_heap >= 0) {
+ heap_remove((surf_action_network_CM02_im_t) action);
+ }
+
+ if (min != -1) {
+ heap_insert((surf_action_network_CM02_im_t) action, min, NORMAL);
+ DEBUG3("Insert at heap action(%p) min %lf now %lf", action, min, now);
+ }
+ }
+
+ //hereafter must have already the min value for this resource model
+ if(xbt_heap_size(im_net_action_heap) > 0 ){
+ min = xbt_heap_maxkey(im_net_action_heap) - now ;
+ }else{
+ min = -1;
+ }
+
+ DEBUG1("The minimum with the HEAP %lf", min);
+
+
+ return min;
+}
+
+static void im_net_update_actions_state(double now, double delta)
+{
+ surf_action_network_CM02_im_t action = NULL;
+
+ while ((xbt_heap_size(im_net_action_heap) > 0)
+ && (double_equals(xbt_heap_maxkey(im_net_action_heap), now))) {
+ action = xbt_heap_pop(im_net_action_heap);
+ DEBUG1("Action %p: finish", action);
+ GENERIC_ACTION(action).finish = surf_get_clock();
+
+ // if I am wearing a latency heat
+ if( action->hat == LATENCY){
+ lmm_update_variable_weight(network_maxmin_system, action->variable,
+ action->weight);
+ heap_remove(action);
+ action->last_update = surf_get_clock();
+
+ DEBUG1("Action (%p) is not limited by latency anymore", action);
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+ GENERIC_ACTION(action).latency_limited = 0;
+#endif
+
+ // if I am wearing a max_duration or normal hat
+ }else if( action->hat == MAX_DURATION || action->hat == NORMAL ){
+ // no need to communicate anymore
+ // assume that flows that reached max_duration have remaining of 0
+ GENERIC_ACTION(action).remains = 0;
+ action->generic_action.finish = surf_get_clock();
+ surf_network_model->action_state_set((surf_action_t) action,
+ SURF_ACTION_DONE);
+ heap_remove(action);
+ }
+ }
+ return;
+}
+
+static void im_net_update_resource_state(void *id,
+ tmgr_trace_event_t event_type,
+ double value, double date)
+{
+ link_CM02_im_t nw_link = id;
+ /* printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
+ /* "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
+ /* value, event_type); */
+
+ if (event_type == nw_link->lmm_resource.power.event) {
+ double delta =
+ sg_weight_S_parameter / value - sg_weight_S_parameter /
+ (nw_link->lmm_resource.power.peak *
+ nw_link->lmm_resource.power.scale);
+ lmm_variable_t var = NULL;
+ lmm_element_t elem = NULL;
+ surf_action_network_CM02_im_t action = NULL;
+
+ nw_link->lmm_resource.power.peak = value;
+ lmm_update_constraint_bound(network_maxmin_system,
+ nw_link->lmm_resource.constraint,
+ sg_bandwidth_factor *
+ (nw_link->lmm_resource.power.peak *
+ nw_link->lmm_resource.power.scale));
+#ifdef HAVE_TRACING
+ TRACE_surf_link_set_bandwidth(date, nw_link,
+ sg_bandwidth_factor *
+ (nw_link->lmm_resource.power.peak *
+ nw_link->lmm_resource.power.scale));
+#endif
+ if (sg_weight_S_parameter > 0) {
+ while ((var = lmm_get_var_from_cnst
+ (network_maxmin_system, nw_link->lmm_resource.constraint,
+ &elem))) {
+ action = lmm_variable_id(var);
+ action->weight += delta;
+ if (!(action->suspended))
+ lmm_update_variable_weight(network_maxmin_system,
+ action->variable, action->weight);
+ }
+ }
+ if (tmgr_trace_event_free(event_type))
+ nw_link->lmm_resource.power.event = NULL;
+ } else if (event_type == nw_link->lat_event) {
+ double delta = value - nw_link->lat_current;
+ lmm_variable_t var = NULL;
+ lmm_element_t elem = NULL;
+ surf_action_network_CM02_im_t action = NULL;
+
+ nw_link->lat_current = value;
+ while ((var = lmm_get_var_from_cnst
+ (network_maxmin_system, nw_link->lmm_resource.constraint,
+ &elem))) {
+ action = lmm_variable_id(var);
+ action->lat_current += delta;
+ action->weight += delta;
+ if (action->rate < 0)
+ lmm_update_variable_bound(network_maxmin_system, action->variable,
+ sg_tcp_gamma / (2.0 *
+ action->lat_current));
+ else {
+ lmm_update_variable_bound(network_maxmin_system, action->variable,
+ min(action->rate,
+ sg_tcp_gamma / (2.0 *
+ action->lat_current)));
+
+ if (action->rate < sg_tcp_gamma / (2.0 * action->lat_current)) {
+ INFO0("Flow is limited BYBANDWIDTH");
+ } else {
+ INFO1("Flow is limited BYLATENCY, latency of flow is %f",
+ action->lat_current);
+ }
+ }
+ if (!(action->suspended))
+ lmm_update_variable_weight(network_maxmin_system, action->variable,
+ action->weight);
+
+ }
+ if (tmgr_trace_event_free(event_type))
+ nw_link->lat_event = NULL;
+ } else if (event_type == nw_link->lmm_resource.state_event) {
+ if (value > 0)
+ nw_link->lmm_resource.state_current = SURF_RESOURCE_ON;
+ else {
+ lmm_constraint_t cnst = nw_link->lmm_resource.constraint;
+ lmm_variable_t var = NULL;
+ lmm_element_t elem = NULL;
+
+ nw_link->lmm_resource.state_current = SURF_RESOURCE_OFF;
+ while ((var = lmm_get_var_from_cnst
+ (network_maxmin_system, cnst, &elem))) {
+ surf_action_t action = lmm_variable_id(var);
+
+ if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
+ surf_action_state_get(action) == SURF_ACTION_READY) {
+ action->finish = date;
+ surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
+ }
+ }
+ }
+ if (tmgr_trace_event_free(event_type))
+ nw_link->lmm_resource.state_event = NULL;
+ } else {
+ CRITICAL0("Unknown event ! \n");
+ xbt_abort();
+ }
+
+ DEBUG1("There were a resource state event, need to update actions related to the constraint (%p)", nw_link->lmm_resource.constraint);
+ return;
+}
+
+
+static surf_action_t im_net_communicate(const char *src_name,
+ const char *dst_name, double size,
+ double rate)
+{
+ unsigned int i;
+ link_CM02_im_t link;
+ int failed = 0;
+ surf_action_network_CM02_im_t action = NULL;
+ double bandwidth_bound;
+ /* LARGE PLATFORMS HACK:
+ Add a link_CM02_im_t *link and a int link_nb to network_card_CM02_im_t. It will represent local links for this node
+ Use the cluster_id for ->id */
+
+ xbt_dynar_t back_route = NULL;
+ int constraints_per_variable = 0;
+ // I will need this route for some time so let's call get_route_no_cleanup
+ xbt_dynar_t route = global_routing->get_route_no_cleanup(src_name, dst_name);
+
+
+ if (sg_network_fullduplex == 1) {
+ back_route = global_routing->get_route(dst_name, src_name);
+ }
+
+ /* LARGE PLATFORMS HACK:
+ total_route_size = route_size + src->link_nb + dst->nb */
+
+ XBT_IN4("(%s,%s,%g,%g)", src_name, dst_name, size, rate);
+ /* LARGE PLATFORMS HACK:
+ assert on total_route_size */
+ xbt_assert2(xbt_dynar_length(route),
+ "You're trying to send data from %s to %s but there is no connection between these two hosts.",
+ src_name, dst_name);
+
+ xbt_dynar_foreach(route, i, link) {
+ if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
+ failed = 1;
+ break;
+ }
+ }
+ action =
+ surf_action_new(sizeof(s_surf_action_network_CM02_im_t), size,
+ surf_network_model, failed);
+
+
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+ (action->generic_action).latency_limited = 0;
+#endif
+
+ xbt_swag_insert(action, action->generic_action.state_set);
+ action->rate = rate;
+ action->index_heap = -1;
+ action->latency = 0.0;
+ action->weight = 0.0;
+ action->last_update = surf_get_clock();
+
+ bandwidth_bound = -1.0;
+ xbt_dynar_foreach(route, i, link) {
+ action->latency += link->lat_current;
+ action->weight +=
+ link->lat_current +
+ sg_weight_S_parameter /
+ (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
+ if (bandwidth_bound < 0.0)
+ bandwidth_bound =
+ (*bandwidth_factor_callback) (size) *
+ (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
+ else
+ bandwidth_bound =
+ min(bandwidth_bound,
+ (*bandwidth_factor_callback) (size) *
+ (link->lmm_resource.power.peak *
+ link->lmm_resource.power.scale));
+ }
+ /* LARGE PLATFORMS HACK:
+ Add src->link and dst->link latencies */
+ action->lat_current = action->latency;
+ action->latency *= (*latency_factor_callback) (size);
+ action->rate =
+ (*bandwidth_constraint_callback) (action->rate, bandwidth_bound,
+ size);
+
+ /* LARGE PLATFORMS HACK:
+ lmm_variable_new(..., total_route_size) */
+ if (back_route != NULL) {
+ constraints_per_variable =
+ xbt_dynar_length(route) + xbt_dynar_length(back_route);
+ } else {
+ constraints_per_variable = xbt_dynar_length(route);
+ }
+
+ if (action->latency > 0){
+ action->variable =
+ lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
+ constraints_per_variable);
+ // add to the heap the event when the latency is payed
+ DEBUG2("Added action (%p) one latency event at date %f", action, action->latency + action->last_update);
+ heap_insert(action, action->latency + action->last_update, LATENCY);
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+ (action->generic_action).latency_limited = 1;
+#endif
+ }
+ else
+ action->variable =
+ lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
+ constraints_per_variable);
+
+ if (action->rate < 0) {
+ if (action->lat_current > 0)
+ lmm_update_variable_bound(network_maxmin_system, action->variable,
+ sg_tcp_gamma / (2.0 *
+ action->lat_current));
+ else
+ lmm_update_variable_bound(network_maxmin_system, action->variable,
+ -1.0);
+ } else {
+ if (action->lat_current > 0)
+ lmm_update_variable_bound(network_maxmin_system, action->variable,
+ min(action->rate,
+ sg_tcp_gamma / (2.0 *
+ action->lat_current)));
+ else
+ lmm_update_variable_bound(network_maxmin_system, action->variable,
+ action->rate);
+ }
+
+ xbt_dynar_foreach(route, i, link) {
+ lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
+ action->variable, 1.0);
+ }
+
+ if (sg_network_fullduplex == 1) {
+ DEBUG1("Fullduplex active adding backward flow using 5%c", '%');
+ xbt_dynar_foreach(back_route, i, link) {
+ lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
+ action->variable, .05);
+ }
+ }
+
+ /* LARGE PLATFORMS HACK:
+ expand also with src->link and dst->link */
+#ifdef HAVE_TRACING
+ action->src_name = xbt_new(char, strlen(src_name) + 1);
+ strncpy(action->src_name, src_name, strlen(src_name) + 1);
+
+ action->dst_name = xbt_new(char, strlen(dst_name) + 1);
+ strncpy(action->dst_name, dst_name, strlen(dst_name) + 1);
+#endif
+
+ xbt_dynar_free(&route);
+ XBT_OUT;
+
+ return (surf_action_t) action;
+}
+
+static xbt_dynar_t im_net_get_route(const char *src, const char *dst)
+{
+ return global_routing->get_route(src, dst);
+}
+
+static double im_net_get_link_bandwidth(const void *link)
+{
+ surf_resource_lmm_t lmm = (surf_resource_lmm_t) link;
+ return lmm->power.peak * lmm->power.scale;
+}
+
+static double im_net_get_link_latency(const void *link)
+{
+ return ((link_CM02_im_t) link)->lat_current;
+}
+
+static int im_net_link_shared(const void *link)
+{
+ return
+ lmm_constraint_is_shared(((surf_resource_lmm_t) link)->constraint);
+}
+
+static void im_net_action_suspend(surf_action_t action)
+{
+ ((surf_action_network_CM02_im_t) action)->suspended = 1;
+ lmm_update_variable_weight(network_maxmin_system,
+ ((surf_action_network_CM02_im_t)
+ action)->variable, 0.0);
+
+ // remove action from the heap
+ heap_remove((surf_action_network_CM02_im_t) action);
+}
+
+static void im_net_action_resume(surf_action_t action)
+{
+ if (((surf_action_network_CM02_im_t) action)->suspended) {
+ lmm_update_variable_weight(network_maxmin_system,
+ ((surf_action_network_CM02_im_t)
+ action)->variable,
+ ((surf_action_network_CM02_im_t)
+ action)->weight);
+ ((surf_action_network_CM02_im_t) action)->suspended = 0;
+ // remove action from the heap
+ heap_remove((surf_action_network_CM02_im_t) action);
+ }
+}
+
+static int im_net_action_is_suspended(surf_action_t action)
+{
+ return ((surf_action_network_CM02_im_t) action)->suspended;
+}
+
+void im_net_action_set_max_duration(surf_action_t action, double duration)
+{
+ action->max_duration = duration;
+ // remove action from the heap
+ heap_remove((surf_action_network_CM02_im_t) action);
+}
+
+
+static void im_net_finalize(void)
+{
+ surf_model_exit(surf_network_model);
+ surf_network_model = NULL;
+
+ global_routing->finalize();
+
+ lmm_system_free(network_maxmin_system);
+ network_maxmin_system = NULL;
+
+ xbt_heap_free(im_net_action_heap);
+ xbt_swag_free(im_net_modified_set);
+
+}
+
+static void im_surf_network_model_init_internal(void)
+{
+ s_surf_action_network_CM02_im_t comm;
+ INFO0("You are using the UNSAFE lazy management optimization, I hope you know what you are doing.");
+ INFO0("====> For now this optimization is only available for LV08_im network model.");
+
+ surf_network_model = surf_model_init();
+
+ surf_network_model->name = "network";
+ surf_network_model->action_unref = im_net_action_unref;
+ surf_network_model->action_cancel = im_net_action_cancel;
+ surf_network_model->action_recycle = im_net_action_recycle;
+ surf_network_model->get_remains = im_net_action_get_remains;
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+ surf_network_model->get_latency_limited = im_net_get_link_latency_limited;
+#endif
+
+ surf_network_model->model_private->resource_used = im_net_resource_used;
+ surf_network_model->model_private->share_resources = im_net_share_resources;
+ surf_network_model->model_private->update_actions_state =
+ im_net_update_actions_state;
+ surf_network_model->model_private->update_resource_state =
+ im_net_update_resource_state;
+ surf_network_model->model_private->finalize = im_net_finalize;
+
+ surf_network_model->suspend = im_net_action_suspend;
+ surf_network_model->resume = im_net_action_resume;
+ surf_network_model->is_suspended = im_net_action_is_suspended;
+ surf_cpu_model->set_max_duration = im_net_action_set_max_duration;
+
+ surf_network_model->extension.network.communicate = im_net_communicate;
+ surf_network_model->extension.network.get_route = im_net_get_route;
+ surf_network_model->extension.network.get_link_bandwidth =
+ im_net_get_link_bandwidth;
+ surf_network_model->extension.network.get_link_latency =
+ im_net_get_link_latency;
+ surf_network_model->extension.network.link_shared = im_net_link_shared;
+ surf_network_model->extension.network.add_traces = im_net_add_traces;
+ surf_network_model->extension.network.create_resource =
+ im_net_create_resource;
+
+
+ if (!network_maxmin_system){
+ sg_maxmin_selective_update = 1;
+ network_maxmin_system = lmm_system_new();
+ }
+ im_net_action_heap = xbt_heap_new(8,NULL);
+
+ xbt_heap_set_update_callback(im_net_action_heap, im_net_action_update_index_heap);
+
+ routing_model_create(sizeof(link_CM02_im_t),
+ (void *) im_net_link_new(xbt_strdup("__loopback__"),
+ 498000000, NULL, 0.000015, NULL,
+ SURF_RESOURCE_ON, NULL,
+ SURF_LINK_FATPIPE, NULL));
+ im_net_modified_set =
+ xbt_swag_new(xbt_swag_offset(comm, action_list_hookup));
+ keep_track = im_net_modified_set;
+}
+
+
+
+/************************************************************************/
+/* New model based on optimizations discussed during this thesis */
+/************************************************************************/
+void im_surf_network_model_init_LegrandVelho(const char *filename)
+{
+
+ if (surf_network_model)
+ return;
+ im_surf_network_model_init_internal();
+ im_net_define_callbacks(filename);
+ xbt_dynar_push(model_list, &surf_network_model);
+ network_solve = lmm_solve;
+
+ xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
+ xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
+ 0.92);
+ xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
+
+ update_model_description(surf_network_model_description,
+ "LV08_im", surf_network_model);
+}
+
+
+
