-/* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010. The SimGrid Team.
+
+/*
+ * 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
#include "xbt/log.h"
#include "xbt/str.h"
+#include "surf_private.h"
+#include "xbt/dict.h"
+#include "maxmin_private.h"
#include "surf/surfxml_parse_values.h"
+#include "surf/surf_resource.h"
+#include "surf/surf_resource_lmm.h"
+
+#undef GENERIC_LMM_ACTION
+#undef GENERIC_ACTION
+#define GENERIC_LMM_ACTION(action) (action)->generic_lmm_action
+#define GENERIC_ACTION(action) GENERIC_LMM_ACTION(action).generic_action
+
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf,
"Logging specific to the SURF network module");
static lmm_system_t network_maxmin_system = NULL;
static void (*network_solve) (lmm_system_t) = NULL;
+xbt_dynar_t smpi_bw_factor = NULL;
+xbt_dynar_t smpi_lat_factor = NULL;
+
+typedef struct s_smpi_factor *smpi_factor_t;
+typedef struct s_smpi_factor {
+ long factor;
+ double value;
+} s_smpi_factor_t;
+
double sg_sender_gap = 0.0;
double sg_latency_factor = 1.0; /* default value; can be set by model or from command line */
double sg_bandwidth_factor = 1.0; /* default value; can be set by model or from command line */
double sg_weight_S_parameter = 0.0; /* default value; can be set by model or from command line */
double sg_tcp_gamma = 0.0;
-int sg_network_fullduplex = 0;
+int sg_network_crosstraffic = 0;
xbt_dict_t gap_lookup = NULL;
-static double net_get_link_bandwidth(const void *link);
+e_UM_t network_update_mechanism = UM_UNDEFINED;
+static int net_selective_update = 0;
-static void gap_append(double size, const link_CM02_t link, surf_action_network_CM02_t action) {
- const char* src = link->lmm_resource.generic_resource.name;
- xbt_fifo_t fifo;
- surf_action_network_CM02_t last_action;
- double bw;
+static int net_action_is_suspended(surf_action_t action);
+static void update_action_remaining_lazy(double now);
- if(sg_sender_gap > 0.0) {
- if(!gap_lookup) {
- gap_lookup = xbt_dict_new();
- }
- fifo = (xbt_fifo_t)xbt_dict_get_or_null(gap_lookup, src);
- action->sender.gap = 0.0;
- if(fifo && xbt_fifo_size(fifo) > 0) {
- /* Compute gap from last send */
- last_action = (surf_action_network_CM02_t)xbt_fifo_get_item_content(xbt_fifo_get_last_item(fifo));
- bw = net_get_link_bandwidth(link);
- action->sender.gap = last_action->sender.gap + max(sg_sender_gap, last_action->sender.size / bw);
- action->latency += action->sender.gap;
- }
- /* Append action as last send */
- action->sender.link_name = link->lmm_resource.generic_resource.name;
- fifo = (xbt_fifo_t)xbt_dict_get_or_null(gap_lookup, action->sender.link_name);
- if(!fifo) {
- fifo = xbt_fifo_new();
- xbt_dict_set(gap_lookup, action->sender.link_name, fifo, NULL);
- }
- action->sender.fifo_item = xbt_fifo_push(fifo, action);
- action->sender.size = size;
- }
-}
-
-static void gap_unknown(surf_action_network_CM02_t action) {
- action->sender.gap = 0.0;
- action->sender.link_name = NULL;
- action->sender.fifo_item = NULL;
- action->sender.size = 0.0;
-}
-
-static void gap_remove(surf_action_network_CM02_t action) {
- xbt_fifo_t fifo;
- size_t size;
-
- if(sg_sender_gap > 0.0 && action->sender.link_name && action->sender.fifo_item) {
- fifo = (xbt_fifo_t)xbt_dict_get_or_null(gap_lookup, action->sender.link_name);
- xbt_fifo_remove_item(fifo, action->sender.fifo_item);
- size = xbt_fifo_size(fifo);
- if(size == 0) {
- xbt_fifo_free(fifo);
- xbt_dict_remove(gap_lookup, action->sender.link_name);
- size = xbt_dict_size(gap_lookup);
- if(size == 0) {
- xbt_dict_free(&gap_lookup);
- }
- }
- }
+static xbt_swag_t net_modified_set = NULL;
+static xbt_heap_t net_action_heap = NULL;
+
+/* added to manage the communication action's heap */
+static void net_action_update_index_heap(void *action, int i)
+{
+ surf_action_network_CM02_t a = action;
+ GENERIC_LMM_ACTION(a).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_t action, double key,
+ enum heap_action_type hat)
+{
+ GENERIC_LMM_ACTION(action).hat = hat;
+ xbt_heap_push(net_action_heap, action, key);
+}
+
+static void heap_remove(surf_action_network_CM02_t action)
+{
+ GENERIC_LMM_ACTION(action).hat = NOTSET;
+ if (GENERIC_LMM_ACTION(action).index_heap >= 0) {
+ xbt_heap_remove(net_action_heap, GENERIC_LMM_ACTION(action).index_heap);
+ }
}
/******************************************************************************/
/**********************/
/* SMPI callbacks */
/**********************/
-static double smpi_latency_factor(double size)
+static xbt_dynar_t parse_factor(const char *smpi_coef_string)
{
- /* 1 B <= size <= 1 KiB */
- if (size <= 1024.0) {
- return 1.0056;
+ char *value = NULL;
+ unsigned int iter = 0;
+ s_smpi_factor_t fact;
+ xbt_dynar_t smpi_factor, radical_elements, radical_elements2 = NULL;
+
+ smpi_factor = xbt_dynar_new(sizeof(s_smpi_factor_t), NULL);
+ radical_elements = xbt_str_split(smpi_coef_string, ";");
+ xbt_dynar_foreach(radical_elements, iter, value) {
+
+ radical_elements2 = xbt_str_split(value, ":");
+ if (xbt_dynar_length(radical_elements2) != 2)
+ xbt_die("Malformed radical for smpi factor!");
+ fact.factor = atol(xbt_dynar_get_as(radical_elements2, 0, char *));
+ fact.value = atof(xbt_dynar_get_as(radical_elements2, 1, char *));
+ xbt_dynar_push_as(smpi_factor, s_smpi_factor_t, fact);
+ XBT_DEBUG("smpi_factor:\t%ld : %f", fact.factor, fact.value);
+ xbt_dynar_free(&radical_elements2);
}
-
- /* 2 KiB <= size <= 32 KiB */
- if (size <= 32768.0) {
- return 1.8805;
- }
-
- /* 64 KiB <= size <= 4 MiB */
- return 22.7111;
+ xbt_dynar_free(&radical_elements);
+ return smpi_factor;
}
static double smpi_bandwidth_factor(double size)
{
- /* 1 B <= size <= 1 KiB */
- if (size <= 1024.0) {
- return 0.2758;
+ if (!smpi_bw_factor)
+ smpi_bw_factor =
+ parse_factor(xbt_cfg_get_string(_surf_cfg_set, "smpi/bw_factor"));
+
+ unsigned int iter = 0;
+ s_smpi_factor_t fact;
+ xbt_dynar_foreach(smpi_bw_factor, iter, fact) {
+ if (size >= fact.factor) {
+ XBT_DEBUG("%lf >= %ld return %f", size, fact.factor, fact.value);
+ return fact.value;
+ }
}
- /* 2 KiB <= size <= 32 KiB */
- if (size <= 32768.0) {
- return 0.5477;
+ return 1.0;
+}
+
+static double smpi_latency_factor(double size)
+{
+ if (!smpi_lat_factor)
+ smpi_lat_factor =
+ parse_factor(xbt_cfg_get_string(_surf_cfg_set, "smpi/lat_factor"));
+
+ unsigned int iter = 0;
+ s_smpi_factor_t fact;
+ xbt_dynar_foreach(smpi_lat_factor, iter, fact) {
+ if (size >= fact.factor) {
+ XBT_DEBUG("%lf >= %ld return %f", size, fact.factor, fact.value);
+ return fact.value;
+ }
}
- /* 64 KiB <= size <= 4 MiB */
- return 0.9359;
+ return 1.0;
}
+/**--------- <copy/paste C code snippet in surf/network.c> -----------*/
+
static double smpi_bandwidth_constraint(double rate, double bound,
double size)
{
return rate < 0 ? bound : min(bound, rate * smpi_bandwidth_factor(size));
}
-
static double (*latency_factor_callback) (double) =
&constant_latency_factor;
static double (*bandwidth_factor_callback) (double) =
static double (*bandwidth_constraint_callback) (double, double, double) =
&constant_bandwidth_constraint;
-
-static void* net_create_resource(const 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)
+static void (*gap_append) (double, const link_CM02_t,
+ surf_action_network_CM02_t) = NULL;
+static void (*gap_remove) (surf_action_network_CM02_t) = NULL;
+
+static void *net_create_resource(const 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_t nw_link = (link_CM02_t)
surf_resource_lmm_new(sizeof(s_link_CM02_t),
bw_initial, bw_trace);
xbt_assert(!xbt_lib_get_or_null(link_lib, name, SURF_LINK_LEVEL),
- "Link '%s' declared several times in the platform file.",
- name);
+ "Link '%s' declared several times in the platform file.",
+ name);
nw_link->lat_current = lat_initial;
if (lat_trace)
return nw_link;
}
-static void net_parse_link_init(void)
+static void net_parse_link_init(sg_platf_link_cbarg_t link)
{
- XBT_DEBUG("link_CM02");
-
- if(struct_lnk->V_policy_initial_link == SURF_LINK_FULLDUPLEX)
- {
- net_create_resource(bprintf("%s_UP",struct_lnk->V_link_id), struct_lnk->V_link_bandwidth, struct_lnk->V_link_bandwidth_file,
- struct_lnk->V_link_latency, struct_lnk->V_link_latency_file, struct_lnk->V_link_state, struct_lnk->V_link_state_file,
- struct_lnk->V_policy_initial_link, xbt_dict_new());
- net_create_resource(bprintf("%s_DOWN",struct_lnk->V_link_id), struct_lnk->V_link_bandwidth, struct_lnk->V_link_bandwidth_file,
- struct_lnk->V_link_latency, struct_lnk->V_link_latency_file, struct_lnk->V_link_state, struct_lnk->V_link_state_file,
- struct_lnk->V_policy_initial_link, xbt_dict_new());
- }
- else
- {
- net_create_resource(xbt_strdup(struct_lnk->V_link_id), struct_lnk->V_link_bandwidth, struct_lnk->V_link_bandwidth_file,
- struct_lnk->V_link_latency, struct_lnk->V_link_latency_file, struct_lnk->V_link_state, struct_lnk->V_link_state_file,
- struct_lnk->V_policy_initial_link, xbt_dict_new());
+ if (link->policy == SURF_LINK_FULLDUPLEX) {
+ char *link_id;
+ link_id = bprintf("%s_UP", link->id);
+ net_create_resource(link_id,
+ link->bandwidth,
+ link->bandwidth_trace,
+ link->latency,
+ link->latency_trace,
+ link->state,
+ link->state_trace, link->policy, link->properties);
+ xbt_free(link_id);
+ link_id = bprintf("%s_DOWN", link->id);
+ net_create_resource(link_id,
+ link->bandwidth,
+ link->bandwidth_trace,
+ link->latency,
+ link->latency_trace,
+ link->state,
+ link->state_trace, link->policy, link->properties);
+ xbt_free(link_id);
+ } else {
+ net_create_resource(link->id,
+ link->bandwidth,
+ link->bandwidth_trace,
+ link->latency,
+ link->latency_trace,
+ link->state,
+ link->state_trace, link->policy, link->properties);
}
-
}
static void net_add_traces(void)
/* 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_t link =
- xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
+ link_CM02_t link = xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
- trace_name, elm);
+ trace_name, elm);
xbt_assert(trace,
- "Cannot connect trace %s to link %s: trace undefined",
- trace_name, elm);
+ "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_t link =
- xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
+ link_CM02_t link = xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
- trace_name, elm);
+ trace_name, elm);
xbt_assert(trace,
- "Cannot connect trace %s to link %s: trace undefined",
- trace_name, elm);
+ "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_t link =
- xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
+ link_CM02_t link = xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
- trace_name, elm);
+ trace_name, elm);
xbt_assert(trace,
- "Cannot connect trace %s to link %s: trace undefined",
- trace_name, elm);
+ "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 net_define_callbacks(void)
{
/* Figuring out the network links */
- surfxml_add_callback(STag_surfxml_link_cb_list, &net_parse_link_init);
- surfxml_add_callback(ETag_surfxml_platform_cb_list, &net_add_traces);
+ sg_platf_link_add_cb(net_parse_link_init);
+ sg_platf_postparse_add_cb(net_add_traces);
}
static int net_resource_used(void *resource_id)
{
- return lmm_constraint_used(network_maxmin_system,
- ((surf_resource_lmm_t)
- resource_id)->constraint);
+ return lmm_constraint_used(network_maxmin_system, ((surf_resource_lmm_t)
+ resource_id)->
+ constraint);
}
static int net_action_unref(surf_action_t action)
action->refcount--;
if (!action->refcount) {
xbt_swag_remove(action, action->state_set);
- if (((surf_action_network_CM02_t) action)->variable)
+ if (((surf_action_lmm_t)action)->variable) {
lmm_variable_free(network_maxmin_system,
- ((surf_action_network_CM02_t) action)->variable);
-#ifdef HAVE_TRACING
- xbt_free(((surf_action_network_CM02_t) action)->src_name);
- xbt_free(((surf_action_network_CM02_t) action)->dst_name);
- if (action->category)
- xbt_free(action->category);
-#endif
+ ((surf_action_lmm_t) action)->variable);
+ }
+ if (network_update_mechanism == UM_LAZY) { // remove action from the heap
+ heap_remove((surf_action_network_CM02_t) action);
+ xbt_swag_remove(action, net_modified_set);
+ }
surf_action_free(&action);
return 1;
}
return 0;
}
+
+
static void net_action_cancel(surf_action_t action)
{
+ XBT_DEBUG("cancel action %p", action);
surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
+ if (network_update_mechanism == UM_LAZY) { // remove action from the heap
+ xbt_swag_remove(action, net_modified_set);
+ heap_remove((surf_action_network_CM02_t) action);
+ }
}
void net_action_recycle(surf_action_t action)
double net_action_get_remains(surf_action_t action)
{
+ if (network_update_mechanism == UM_LAZY) /* update remains before return it */
+ update_action_remaining_lazy(surf_get_clock());
return action->remains;
}
-static double net_share_resources(double now)
+static void update_action_remaining_lazy(double now)
{
- s_surf_action_network_CM02_t s_action;
+ surf_action_network_CM02_t action = NULL;
+ double delta = 0.0;
+
+ xbt_swag_foreach(action, net_modified_set) {
+
+ if (GENERIC_LMM_ACTION(action).suspended != 0) {
+ continue;
+ }
+
+ delta = now - GENERIC_LMM_ACTION(action).last_update;
+
+ double_update(&(((surf_action_t)action)->remains),
+ lmm_variable_getvalue(((surf_action_lmm_t) action)->variable) * delta);
+
+ if (((surf_action_t)action)->max_duration != NO_MAX_DURATION)
+ double_update(&(((surf_action_t)action)->max_duration), delta);
+
+ if ((((surf_action_t)action)->remains <= 0) &&
+ (lmm_get_variable_weight(((surf_action_lmm_t)action)->variable) > 0)) {
+ ((surf_action_t)action)->finish = surf_get_clock();
+ surf_network_model->action_state_set((surf_action_t) action,
+ SURF_ACTION_DONE);
+ heap_remove(action);
+ } else if (((((surf_action_t)action)->max_duration != NO_MAX_DURATION)
+ && (((surf_action_t)action)->max_duration <= 0))) {
+ ((surf_action_t)action)->finish = surf_get_clock();
+ surf_network_model->action_state_set((surf_action_t) action,
+ SURF_ACTION_DONE);
+ heap_remove(action);
+ }
+
+ GENERIC_LMM_ACTION(action).last_update = now;
+ }
+}
+
+static double net_share_resources_full(double now)
+{
+ s_surf_action_lmm_t s_action;
surf_action_network_CM02_t action = NULL;
xbt_swag_t running_actions =
surf_network_model->states.running_action_set;
xbt_swag_foreach(action, running_actions) {
#ifdef HAVE_LATENCY_BOUND_TRACKING
if (lmm_is_variable_limited_by_latency(action->variable)) {
- (action->generic_action).latency_limited = 1;
+ GENERIC_LMM_ACTION(action).latency_limited = 1;
} else {
- (action->generic_action).latency_limited = 0;
+ GENERIC_LMM_ACTION(action).latency_limited = 0;
}
#endif
if (action->latency > 0) {
- if (min < 0)
- min = action->latency;
- else if (action->latency < min)
- min = action->latency;
+ min = (min < 0) ? action->latency : min(min, action->latency);
}
}
return min;
}
-static void net_update_actions_state(double now, double delta)
+static double net_share_resources_lazy(double now)
+{
+ surf_action_network_CM02_t action = NULL;
+ double min = -1;
+ double value;
+
+ XBT_DEBUG
+ ("Before share resources, the size of modified actions set is %d",
+ xbt_swag_size(net_modified_set));
+ update_action_remaining_lazy(now);
+
+ lmm_solve(network_maxmin_system);
+
+ XBT_DEBUG
+ ("After share resources, The size of modified actions set is %d",
+ xbt_swag_size(net_modified_set));
+
+ xbt_swag_foreach(action, net_modified_set) {
+ int max_dur_flag = 0;
+
+ 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(GENERIC_LMM_ACTION(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;
+ max_dur_flag = 1;
+ }
+
+ XBT_DEBUG("Action(%p) Start %lf Finish %lf Max_duration %lf", action,
+ GENERIC_ACTION(action).start, now + value,
+ GENERIC_ACTION(action).max_duration);
+
+ if (min != -1) {
+ heap_remove(action);
+ heap_insert(action, min, max_dur_flag ? MAX_DURATION : NORMAL);
+ XBT_DEBUG("Insert at heap action(%p) min %lf now %lf", action, min,
+ now);
+ } else DIE_IMPOSSIBLE;
+ }
+
+ //hereafter must have already the min value for this resource model
+ if (xbt_heap_size(net_action_heap) > 0)
+ min = xbt_heap_maxkey(net_action_heap) - now;
+ else
+ min = -1;
+
+ XBT_DEBUG("The minimum with the HEAP %lf", min);
+
+ return min;
+}
+
+static void net_update_actions_state_full(double now, double delta)
{
double deltap = 0.0;
surf_action_network_CM02_t action = NULL;
double_update(&(deltap), action->latency);
action->latency = 0.0;
}
- if ((action->latency == 0.0) && !(action->suspended))
- lmm_update_variable_weight(network_maxmin_system, action->variable,
+ if ((action->latency == 0.0) && !(GENERIC_LMM_ACTION(action).suspended))
+ lmm_update_variable_weight(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
action->weight);
}
#ifdef HAVE_TRACING
if (TRACE_is_enabled()) {
- xbt_dynar_t route = global_routing->get_route(action->src_name,
- action->dst_name);
- link_CM02_t link;
+ int n = lmm_get_number_of_cnst_from_var(network_maxmin_system, GENERIC_LMM_ACTION(action).variable);
unsigned int i;
- xbt_dynar_foreach(route, i, link) {
+ for (i = 0; i < n; i++){
+ lmm_constraint_t constraint = lmm_get_cnst_from_var(network_maxmin_system,
+ GENERIC_LMM_ACTION(action).variable,
+ i);
+ link_CM02_t link = lmm_constraint_id(constraint);
TRACE_surf_link_set_utilization(link->lmm_resource.generic_resource.name,
- action->generic_action.data,
- (surf_action_t) action,
- lmm_variable_getvalue
- (action->variable), now - delta,
+ ((surf_action_t)action)->category,
+ lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable),
+ now - delta,
delta);
}
}
#endif
- if(!lmm_get_number_of_cnst_from_var(network_maxmin_system, action->variable)) {
- /* There is actually no link used, hence an infinite bandwidth.
- * This happens often when using models like vivaldi.
- * In such case, just make sure that the action completes immediately.
- */
- double_update(&(action->generic_action.remains),
- action->generic_action.remains);
+ if (!lmm_get_number_of_cnst_from_var
+ (network_maxmin_system, GENERIC_LMM_ACTION(action).variable)) {
+ /* There is actually no link used, hence an infinite bandwidth.
+ * This happens often when using models like vivaldi.
+ * In such case, just make sure that the action completes immediately.
+ */
+ double_update(&(GENERIC_ACTION(action).remains),
+ GENERIC_ACTION(action).remains);
}
- double_update(&(action->generic_action.remains),
- lmm_variable_getvalue(action->variable) * deltap);
- 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();
+ double_update(&(GENERIC_ACTION(action).remains),
+ lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable) * deltap);
+ if (((surf_action_t)action)->max_duration != NO_MAX_DURATION)
+ double_update(&(((surf_action_t)action)->max_duration), delta);
+
+ if ((GENERIC_ACTION(action).remains <= 0) &&
+ (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0)) {
+ ((surf_action_t)action)->finish = surf_get_clock();
surf_network_model->action_state_set((surf_action_t) action,
SURF_ACTION_DONE);
- gap_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();
+
+ if (gap_remove)
+ gap_remove(action);
+ } else if ((((surf_action_t)action)->max_duration != NO_MAX_DURATION)
+ && (((surf_action_t)action)->max_duration <= 0)) {
+ ((surf_action_t)action)->finish = surf_get_clock();
surf_network_model->action_state_set((surf_action_t) action,
SURF_ACTION_DONE);
- gap_remove(action);
+ if (gap_remove)
+ gap_remove(action);
}
}
return;
}
+static void net_update_actions_state_lazy(double now, double delta)
+{
+ surf_action_network_CM02_t action = NULL;
+
+ while ((xbt_heap_size(net_action_heap) > 0)
+ && (double_equals(xbt_heap_maxkey(net_action_heap), now))) {
+ action = xbt_heap_pop(net_action_heap);
+ XBT_DEBUG("Action %p: finish", action);
+ GENERIC_ACTION(action).finish = surf_get_clock();
+
+ // if I am wearing a latency hat
+ if (GENERIC_LMM_ACTION(action).hat == LATENCY) {
+ lmm_update_variable_weight(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
+ action->weight);
+ heap_remove(action);
+ GENERIC_LMM_ACTION(action).last_update = surf_get_clock();
+
+ // if I am wearing a max_duration or normal hat
+ } else if (GENERIC_LMM_ACTION(action).hat == MAX_DURATION ||
+ GENERIC_LMM_ACTION(action).hat == NORMAL) {
+ // no need to communicate anymore
+ // assume that flows that reached max_duration have remaining of 0
+ GENERIC_ACTION(action).remains = 0;
+ ((surf_action_t)action)->finish = surf_get_clock();
+ surf_network_model->action_state_set((surf_action_t) action,
+ SURF_ACTION_DONE);
+ heap_remove(action);
+ }
+ }
+ return;
+}
+
static void net_update_resource_state(void *id,
tmgr_trace_event_t event_type,
double value, double date)
(nw_link->lmm_resource.power.peak *
nw_link->lmm_resource.power.scale));
#ifdef HAVE_TRACING
- TRACE_surf_link_set_bandwidth(date, nw_link->lmm_resource.generic_resource.name,
+ TRACE_surf_link_set_bandwidth(date,
+ (char
+ *) (((nw_link->lmm_resource).
+ generic_resource).name),
sg_bandwidth_factor *
(nw_link->lmm_resource.power.peak *
nw_link->lmm_resource.power.scale));
&elem))) {
action = lmm_variable_id(var);
action->weight += delta;
- if (!(action->suspended))
+ if (!(GENERIC_LMM_ACTION(action).suspended))
lmm_update_variable_weight(network_maxmin_system,
- action->variable, action->weight);
+ GENERIC_LMM_ACTION(action).variable, action->weight);
}
}
if (tmgr_trace_event_free(event_type))
action->lat_current += delta;
action->weight += delta;
if (action->rate < 0)
- lmm_update_variable_bound(network_maxmin_system, action->variable,
+ lmm_update_variable_bound(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
sg_tcp_gamma / (2.0 *
action->lat_current));
else {
- lmm_update_variable_bound(network_maxmin_system, action->variable,
+ lmm_update_variable_bound(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
min(action->rate,
sg_tcp_gamma / (2.0 *
- action->lat_current)));
+ action->
+ lat_current)));
if (action->rate < sg_tcp_gamma / (2.0 * action->lat_current)) {
XBT_INFO("Flow is limited BYBANDWIDTH");
} else {
XBT_INFO("Flow is limited BYLATENCY, latency of flow is %f",
- action->lat_current);
+ action->lat_current);
}
}
- if (!(action->suspended))
- lmm_update_variable_weight(network_maxmin_system, action->variable,
+ if (!(GENERIC_LMM_ACTION(action).suspended))
+ lmm_update_variable_weight(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
action->weight);
}
xbt_abort();
}
+ XBT_DEBUG
+ ("There were a resource state event, need to update actions related to the constraint (%p)",
+ nw_link->lmm_resource.constraint);
return;
}
int failed = 0;
surf_action_network_CM02_t action = NULL;
double bandwidth_bound;
- double latency=0.0;
- /* LARGE PLATFORMS HACK:
- Add a link_CM02_t *link and a int link_nb to network_card_CM02_t. It will represent local links for this node
- Use the cluster_id for ->id */
-
+ double latency = 0.0;
xbt_dynar_t back_route = NULL;
int constraints_per_variable = 0;
- xbt_dynar_t route;
- // I will need this route for some time so require for no cleanup
- global_routing->get_route_latency(src_name, dst_name, &route, &latency, 0);
-
- 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_dynar_t route = xbt_dynar_new(global_routing->size_of_link, NULL);
XBT_IN("(%s,%s,%g,%g)", src_name, dst_name, size, rate);
- /* LARGE PLATFORMS HACK:
- assert on total_route_size */
- xbt_assert(xbt_dynar_length(route) || latency,
- "You're trying to send data from %s to %s but there is no connection at all between these two hosts.",
- src_name, dst_name);
+
+ routing_get_route_and_latency(src_name, dst_name, &route, &latency);
+ xbt_assert(!xbt_dynar_is_empty(route) || latency,
+ "You're trying to send data from %s to %s but there is no connection at all between these two hosts.",
+ src_name, dst_name);
xbt_dynar_foreach(route, i, link) {
if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
break;
}
}
+ if (sg_network_crosstraffic == 1) {
+ routing_get_route_and_latency(dst_name, src_name, &back_route, NULL);
+ xbt_dynar_foreach(back_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_t), size,
surf_network_model, failed);
#ifdef HAVE_LATENCY_BOUND_TRACKING
- (action->generic_action).latency_limited = 0;
+ (GENERIC_LMM_ACTION(action)).latency_limited = 0;
#endif
action->weight = action->latency = latency;
- xbt_swag_insert(action, action->generic_action.state_set);
+ xbt_swag_insert(action, ((surf_action_t)action)->state_set);
action->rate = rate;
+ if (network_update_mechanism == UM_LAZY) {
+ GENERIC_LMM_ACTION(action).index_heap = -1;
+ GENERIC_LMM_ACTION(action).last_update = surf_get_clock();
+ }
bandwidth_bound = -1.0;
-
+ if (sg_weight_S_parameter > 0) {
+ xbt_dynar_foreach(route, i, link) {
+ action->weight +=
+ sg_weight_S_parameter /
+ (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
+ }
+ }
xbt_dynar_foreach(route, i, link) {
- action->weight +=
- sg_weight_S_parameter /
+ double bb = bandwidth_factor_callback(size) *
(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 */
+ bandwidth_bound =
+ (bandwidth_bound < 0.0) ? bb : min(bandwidth_bound, bb);
+ }
+
action->lat_current = action->latency;
- action->latency *= (*latency_factor_callback) (size);
+ action->latency *= latency_factor_callback(size);
action->rate =
- (*bandwidth_constraint_callback) (action->rate, bandwidth_bound,
- size);
+ bandwidth_constraint_callback(action->rate, bandwidth_bound, size);
+ if (gap_append) {
+ xbt_assert(!xbt_dynar_is_empty(route),
+ "Using a model with a gap (e.g., SMPI) with a platform without links (e.g. vivaldi)!!!");
- if(xbt_dynar_length(route) > 0) {
- link = *(link_CM02_t*)xbt_dynar_get_ptr(route, 0);
+ link = *(link_CM02_t *) xbt_dynar_get_ptr(route, 0);
gap_append(size, link, action);
XBT_DEBUG("Comm %p: %s -> %s gap=%f (lat=%f)",
- action, src_name, dst_name, action->sender.gap, action->latency);
- } else {
- gap_unknown(action);
+ action, src_name, dst_name, action->sender.gap,
+ action->latency);
}
+ constraints_per_variable = xbt_dynar_length(route);
+ if (back_route != NULL)
+ constraints_per_variable += xbt_dynar_length(back_route);
- /* 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 =
+ if (action->latency > 0) {
+ GENERIC_LMM_ACTION(action).variable =
lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
constraints_per_variable);
- else
- action->variable =
+ if (network_update_mechanism == UM_LAZY) {
+ // add to the heap the event when the latency is payed
+ XBT_DEBUG("Added action (%p) one latency event at date %f", action,
+ action->latency + GENERIC_LMM_ACTION(action).last_update);
+ heap_insert(action, action->latency + GENERIC_LMM_ACTION(action).last_update,
+ xbt_dynar_is_empty(route) ? NORMAL : LATENCY);
+ }
+ } else
+ GENERIC_LMM_ACTION(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);
+ lmm_update_variable_bound(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
+ (action->lat_current > 0) ?
+ sg_tcp_gamma / (2.0 *
+ action->lat_current) : -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);
+ lmm_update_variable_bound(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
+ (action->lat_current > 0) ?
+ min(action->rate,
+ sg_tcp_gamma / (2.0 *
+ action->lat_current))
+ : action->rate);
}
xbt_dynar_foreach(route, i, link) {
lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
- action->variable, 1.0);
+ GENERIC_LMM_ACTION(action).variable, 1.0);
}
- if (sg_network_fullduplex == 1) {
- XBT_DEBUG("Fullduplex active adding backward flow using 5%c", '%');
+ if (sg_network_crosstraffic == 1) {
+ XBT_DEBUG("Fullduplex active adding backward flow using 5%%");
xbt_dynar_foreach(back_route, i, link) {
lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
- action->variable, .05);
+ GENERIC_LMM_ACTION(action).variable, .05);
}
}
- /* LARGE PLATFORMS HACK:
- expand also with src->link and dst->link */
-#ifdef HAVE_TRACING
- if (TRACE_is_enabled()) {
- action->src_name = xbt_strdup(src_name);
- action->dst_name = xbt_strdup(dst_name);
- } else {
- action->src_name = action->dst_name = NULL;
- }
-#endif
xbt_dynar_free(&route);
XBT_OUT();
static xbt_dynar_t net_get_route(const char *src, const char *dst)
{
- return global_routing->get_route(src, dst);
+ xbt_dynar_t route = NULL;
+ routing_get_route_and_latency(src, dst, &route, NULL);
+ return route;
}
static double net_get_link_bandwidth(const void *link)
static void net_action_suspend(surf_action_t action)
{
- ((surf_action_network_CM02_t) action)->suspended = 1;
+ ((surf_action_network_CM02_t) action)->generic_lmm_action.suspended = 1;
lmm_update_variable_weight(network_maxmin_system,
((surf_action_network_CM02_t)
- action)->variable, 0.0);
+ action)->generic_lmm_action.variable, 0.0);
+
+ if (network_update_mechanism == UM_LAZY) // remove action from the heap
+ heap_remove((surf_action_network_CM02_t) action);
}
static void net_action_resume(surf_action_t action)
{
- if (((surf_action_network_CM02_t) action)->suspended) {
+ if (((surf_action_network_CM02_t) action)->generic_lmm_action.suspended) {
lmm_update_variable_weight(network_maxmin_system,
((surf_action_network_CM02_t)
- action)->variable,
+ action)->generic_lmm_action.variable,
((surf_action_network_CM02_t)
action)->weight);
- ((surf_action_network_CM02_t) action)->suspended = 0;
+ ((surf_action_network_CM02_t) action)->generic_lmm_action.suspended = 0;
+ if (network_update_mechanism == UM_LAZY) // remove action from the heap
+ heap_remove((surf_action_network_CM02_t) action);
}
}
static int net_action_is_suspended(surf_action_t action)
{
- return ((surf_action_network_CM02_t) action)->suspended;
+ return ((surf_action_network_CM02_t) action)->generic_lmm_action.suspended;
}
void net_action_set_max_duration(surf_action_t action, double duration)
{
action->max_duration = duration;
+ if (network_update_mechanism == UM_LAZY) // remove action from the heap
+ heap_remove((surf_action_network_CM02_t) action);
}
#ifdef HAVE_TRACING
-static void net_action_set_category(surf_action_t action, const char *category)
+static void net_action_set_category(surf_action_t action,
+ const char *category)
{
- action->category = xbt_strdup (category);
+ action->category = xbt_strdup(category);
}
#endif
surf_model_exit(surf_network_model);
surf_network_model = NULL;
- global_routing->finalize();
-
lmm_system_free(network_maxmin_system);
network_maxmin_system = NULL;
+
+ if (network_update_mechanism == UM_LAZY) {
+ xbt_heap_free(net_action_heap);
+ xbt_swag_free(net_modified_set);
+ }
+
+ if (smpi_bw_factor)
+ xbt_dynar_free(&smpi_bw_factor);
+ if (smpi_lat_factor)
+ xbt_dynar_free(&smpi_lat_factor);
+}
+
+static void smpi_gap_append(double size, const link_CM02_t link,
+ surf_action_network_CM02_t action)
+{
+ const char *src = link->lmm_resource.generic_resource.name;
+ xbt_fifo_t fifo;
+ surf_action_network_CM02_t last_action;
+ double bw;
+
+ if (sg_sender_gap > 0.0) {
+ if (!gap_lookup) {
+ gap_lookup = xbt_dict_new();
+ }
+ fifo = (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup, src);
+ action->sender.gap = 0.0;
+ if (fifo && xbt_fifo_size(fifo) > 0) {
+ /* Compute gap from last send */
+ last_action =
+ (surf_action_network_CM02_t)
+ xbt_fifo_get_item_content(xbt_fifo_get_last_item(fifo));
+ bw = net_get_link_bandwidth(link);
+ action->sender.gap =
+ last_action->sender.gap + max(sg_sender_gap,
+ last_action->sender.size / bw);
+ action->latency += action->sender.gap;
+ }
+ /* Append action as last send */
+ action->sender.link_name = link->lmm_resource.generic_resource.name;
+ fifo =
+ (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
+ action->sender.link_name);
+ if (!fifo) {
+ fifo = xbt_fifo_new();
+ xbt_dict_set(gap_lookup, action->sender.link_name, fifo, NULL);
+ }
+ action->sender.fifo_item = xbt_fifo_push(fifo, action);
+ action->sender.size = size;
+ }
+}
+
+static void smpi_gap_remove(surf_action_network_CM02_t action)
+{
+ xbt_fifo_t fifo;
+ size_t size;
+
+ if (sg_sender_gap > 0.0 && action->sender.link_name
+ && action->sender.fifo_item) {
+ fifo =
+ (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
+ action->sender.link_name);
+ xbt_fifo_remove_item(fifo, action->sender.fifo_item);
+ size = xbt_fifo_size(fifo);
+ if (size == 0) {
+ xbt_fifo_free(fifo);
+ xbt_dict_remove(gap_lookup, action->sender.link_name);
+ size = xbt_dict_length(gap_lookup);
+ if (size == 0) {
+ xbt_dict_free(&gap_lookup);
+ }
+ }
+ }
}
static void surf_network_model_init_internal(void)
{
+ s_surf_action_network_CM02_t comm;
surf_network_model = surf_model_init();
surf_network_model->name = "network";
#ifdef HAVE_LATENCY_BOUND_TRACKING
surf_network_model->get_latency_limited = net_get_link_latency_limited;
#endif
+#ifdef HAVE_TRACING
+ surf_network_model->set_category = net_action_set_category;
+#endif
surf_network_model->model_private->resource_used = net_resource_used;
- surf_network_model->model_private->share_resources = net_share_resources;
- surf_network_model->model_private->update_actions_state =
- net_update_actions_state;
+ if (network_update_mechanism == UM_LAZY) {
+ surf_network_model->model_private->share_resources =
+ net_share_resources_lazy;
+ surf_network_model->model_private->update_actions_state =
+ net_update_actions_state_lazy;
+ } else if (network_update_mechanism == UM_FULL) {
+ surf_network_model->model_private->share_resources =
+ net_share_resources_full;
+ surf_network_model->model_private->update_actions_state =
+ net_update_actions_state_full;
+ }
+
surf_network_model->model_private->update_resource_state =
net_update_resource_state;
surf_network_model->model_private->finalize = net_finalize;
surf_network_model->suspend = net_action_suspend;
surf_network_model->resume = net_action_resume;
surf_network_model->is_suspended = net_action_is_suspended;
- surf_network_model->set_max_duration = net_action_set_max_duration;
-#ifdef HAVE_TRACING
- surf_network_model->set_category = net_action_set_category;
-#endif
+ surf_cpu_model->set_max_duration = net_action_set_max_duration;
surf_network_model->extension.network.communicate = net_communicate;
surf_network_model->extension.network.get_route = net_get_route;
net_create_resource;
if (!network_maxmin_system)
- network_maxmin_system = lmm_system_new();
+ network_maxmin_system = lmm_system_new(net_selective_update);
routing_model_create(sizeof(link_CM02_t),
- net_create_resource(xbt_strdup("__loopback__"),
- 498000000, NULL, 0.000015, NULL,
- SURF_RESOURCE_ON, NULL,
- SURF_LINK_FATPIPE, NULL),
- net_get_link_latency);
+ net_create_resource("__loopback__",
+ 498000000, NULL, 0.000015, NULL,
+ SURF_RESOURCE_ON, NULL,
+ SURF_LINK_FATPIPE, NULL));
+
+ if (network_update_mechanism == UM_LAZY) {
+ net_action_heap = xbt_heap_new(8, NULL);
+ xbt_heap_set_update_callback(net_action_heap,
+ net_action_update_index_heap);
+ net_modified_set =
+ xbt_swag_new(xbt_swag_offset(comm, generic_lmm_action.action_list_hookup));
+ network_maxmin_system->keep_track = net_modified_set;
+ }
}
+static void set_update_mechanism(void)
+{
+#ifdef HAVE_TRACING
+ TRACE_set_network_update_mechanism();
+#endif
+ char *optim = xbt_cfg_get_string(_surf_cfg_set, "network/optim");
+ int select =
+ xbt_cfg_get_int(_surf_cfg_set, "network/maxmin_selective_update");
+
+ if (!strcmp(optim, "Full")) {
+ network_update_mechanism = UM_FULL;
+ net_selective_update = select;
+ } else if (!strcmp(optim, "Lazy")) {
+ network_update_mechanism = UM_LAZY;
+ net_selective_update = 1;
+ xbt_assert((select == 1)
+ ||
+ (xbt_cfg_is_default_value
+ (_surf_cfg_set, "network/maxmin_selective_update")),
+ "Disabling selective update while using the lazy update mechanism is dumb!");
+ } else {
+ xbt_die("Unsupported optimization (%s) for this model", optim);
+ }
+}
/************************************************************************/
/* New model based on LV08 and experimental results of MPI ping-pongs */
/************************************************************************/
+/* @Inproceedings{smpi_ipdps, */
+/* author={Pierre-Nicolas Clauss and Mark Stillwell and Stéphane Genaud and Frédéric Suter and Henri Casanova and Martin Quinson}, */
+/* title={Single Node On-Line Simulation of {MPI} Applications with SMPI}, */
+/* booktitle={25th IEEE International Parallel and Distributed Processing Symposium (IPDPS'11)}, */
+/* address={Anchorage (Alaska) USA}, */
+/* month=may, */
+/* year={2011} */
+/* } */
void surf_network_model_init_SMPI(void)
{
if (surf_network_model)
return;
+ set_update_mechanism();
+
surf_network_model_init_internal();
latency_factor_callback = &smpi_latency_factor;
bandwidth_factor_callback = &smpi_bandwidth_factor;
bandwidth_constraint_callback = &smpi_bandwidth_constraint;
+ gap_append = &smpi_gap_append;
+ gap_remove = &smpi_gap_remove;
net_define_callbacks();
xbt_dynar_push(model_list, &surf_network_model);
network_solve = lmm_solve;
xbt_cfg_setdefault_double(_surf_cfg_set, "network/sender_gap", 10e-6);
xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
-
- update_model_description(surf_network_model_description,
- "SMPI", surf_network_model);
}
/************************************************************************/
-/* New model based on optimizations discussed during this thesis */
+/* New model based on optimizations discussed during Pedro Velho's thesis*/
/************************************************************************/
+/* @techreport{VELHO:2011:HAL-00646896:1, */
+/* url = {http://hal.inria.fr/hal-00646896/en/}, */
+/* title = {{Flow-level network models: have we reached the limits?}}, */
+/* author = {Velho, Pedro and Schnorr, Lucas and Casanova, Henri and Legrand, Arnaud}, */
+/* type = {Rapport de recherche}, */
+/* institution = {INRIA}, */
+/* number = {RR-7821}, */
+/* year = {2011}, */
+/* month = Nov, */
+/* pdf = {http://hal.inria.fr/hal-00646896/PDF/rr-validity.pdf}, */
+/* } */
void surf_network_model_init_LegrandVelho(void)
{
-
if (surf_network_model)
return;
+
+ set_update_mechanism();
+
surf_network_model_init_internal();
net_define_callbacks();
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/latency_factor",
+ 13.01);
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_fullupdate", surf_network_model);
+ 0.97);
+ xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 20537);
}
/***************************************************************************/
if (surf_network_model)
return;
+
+ set_update_mechanism();
surf_network_model_init_internal();
net_define_callbacks();
xbt_dynar_push(model_list, &surf_network_model);
network_solve = lmm_solve;
- update_model_description(surf_network_model_description,
- "CM02", surf_network_model);
+ xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 1.0);
+ xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
+ 1.0);
+ xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 0.0);
}
+/***************************************************************************/
+/* The models from Steven H. Low */
+/***************************************************************************/
+/* @article{Low03, */
+/* author={Steven H. Low}, */
+/* title={A Duality Model of {TCP} and Queue Management Algorithms}, */
+/* year={2003}, */
+/* journal={{IEEE/ACM} Transactions on Networking}, */
+/* volume={11}, number={4}, */
+/* } */
void surf_network_model_init_Reno(void)
{
if (surf_network_model)
return;
+
+ set_update_mechanism();
surf_network_model_init_internal();
net_define_callbacks();
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,
- "Reno", surf_network_model);
}
{
if (surf_network_model)
return;
+
+ set_update_mechanism();
surf_network_model_init_internal();
net_define_callbacks();
0.92);
xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S_parameter",
8775);
-
- update_model_description(surf_network_model_description,
- "Reno2", surf_network_model);
}
void surf_network_model_init_Vegas(void)
{
if (surf_network_model)
return;
+
+ set_update_mechanism();
surf_network_model_init_internal();
net_define_callbacks();
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,
- "Vegas", surf_network_model);
}
