-
-/*
- * 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) 2004-2013. 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 "network_private.h"
-#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"
-#include "simgrid/sg_config.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");
-
-surf_model_t surf_network_model = 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_crosstraffic = 0;
-
-xbt_dict_t gap_lookup = NULL;
-
-/******************************************************************************/
-/* Factors callbacks */
-/******************************************************************************/
-static double constant_latency_factor(double size)
-{
- return sg_latency_factor;
-}
-
-static double constant_bandwidth_factor(double size)
-{
- return sg_bandwidth_factor;
-}
-
-static double constant_bandwidth_constraint(double rate, double bound,
- double size)
-{
- return rate;
-}
-
-/**********************/
-/* SMPI callbacks */
-/**********************/
-
-static int factor_cmp(const void *pa, const void *pb)
-{
- return (((s_smpi_factor_t*)pa)->factor > ((s_smpi_factor_t*)pb)->factor);
-}
-
-
-static xbt_dynar_t parse_factor(const char *smpi_coef_string)
-{
- 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);
- }
- xbt_dynar_free(&radical_elements);
- iter=0;
- xbt_dynar_sort(smpi_factor, &factor_cmp);
- xbt_dynar_foreach(smpi_factor, iter, fact) {
- XBT_DEBUG("ordered smpi_factor:\t%ld : %f", fact.factor, fact.value);
-
- }
- return smpi_factor;
-}
-
-static double smpi_bandwidth_factor(double size)
-{
- if (!smpi_bw_factor)
- smpi_bw_factor =
- parse_factor(sg_cfg_get_string("smpi/bw_factor"));
-
- unsigned int iter = 0;
- s_smpi_factor_t fact;
- double current=1.0;
- xbt_dynar_foreach(smpi_bw_factor, iter, fact) {
- if (size <= fact.factor) {
- XBT_DEBUG("%f <= %ld return %f", size, fact.factor, current);
- return current;
- }else
- current=fact.value;
- }
- XBT_DEBUG("%f > %ld return %f", size, fact.factor, current);
-
- return current;
-}
-
-static double smpi_latency_factor(double size)
-{
- if (!smpi_lat_factor)
- smpi_lat_factor =
- parse_factor(sg_cfg_get_string("smpi/lat_factor"));
-
- unsigned int iter = 0;
- s_smpi_factor_t fact;
- double current=1.0;
- xbt_dynar_foreach(smpi_lat_factor, iter, fact) {
- if (size <= fact.factor) {
- XBT_DEBUG("%f <= %ld return %f", size, fact.factor, current);
- return current;
- }else
- current=fact.value;
- }
- XBT_DEBUG("%f > %ld return %f", size, fact.factor, current);
-
- return current;
-}
-
-/**--------- <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) =
- &constant_bandwidth_factor;
-static double (*bandwidth_constraint_callback) (double, double, double) =
- &constant_bandwidth_constraint;
-
-static void (*gap_append) (double, const link_CM02_t,
- 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),
- surf_network_model, name, properties,
- surf_network_model->model_private->maxmin_system,
- sg_bandwidth_factor * bw_initial,
- history,
- state_initial, state_trace,
- 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);
-
- 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_lib_set(link_lib, name, SURF_LINK_LEVEL, nw_link);
- XBT_DEBUG("Create link '%s'",name);
-
- return nw_link;
-}
-
-static void net_parse_link_init(sg_platf_link_cbarg_t link)
-{
- 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)
-{
- 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_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);
- xbt_assert(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_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);
- xbt_assert(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_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);
- xbt_assert(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 net_define_callbacks(void)
-{
- /* Figuring out the network links */
- 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(surf_network_model->model_private->maxmin_system, ((surf_resource_lmm_t)
- resource_id)->
- constraint);
-}
-
-void net_action_recycle(surf_action_t action)
-{
- return;
-}
-
-#ifdef HAVE_LATENCY_BOUND_TRACKING
-int net_get_link_latency_limited(surf_action_t action)
-{
- return action->latency_limited;
-}
-#endif
-
-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;
- double min;
-
- min = generic_maxmin_share_resources(running_actions,
- xbt_swag_offset(s_action,
- variable),
- surf_network_model->model_private->maxmin_system,
- network_solve);
-
-#define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable) )))
-
- xbt_swag_foreach(action, running_actions) {
-#ifdef HAVE_LATENCY_BOUND_TRACKING
- if (lmm_is_variable_limited_by_latency(GENERIC_LMM_ACTION(action).variable)) {
- action->latency_limited = 1;
- } else {
- action->latency_limited = 0;
- }
-#endif
- if (action->latency > 0) {
- min = (min < 0) ? action->latency : min(min, action->latency);
- }
- }
-
- XBT_DEBUG("Min of share resources %f", min);
-
- return min;
-}
-
-static double net_share_resources_lazy(double now)
-{
- return generic_share_resources_lazy(now, surf_network_model);
-}
-
-static void net_update_actions_state_full(double now, double delta)
-{
- generic_update_actions_state_full(now, delta, surf_network_model);
-}
-
-static void net_update_actions_state_lazy(double now, double delta)
-{
- generic_update_actions_state_lazy(now, delta, surf_network_model);
-}
-
-static void net_update_resource_state(void *id,
- tmgr_trace_event_t event_type,
- double value, double date)
-{
- link_CM02_t nw_link = id;
- /* printf("[" "%g" "] Asking to update network card \"%s\" with value " */
- /* "%g" " 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_t action = NULL;
-
- nw_link->lmm_resource.power.peak = value;
- lmm_update_constraint_bound(surf_network_model->model_private->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,
- (char
- *) (((nw_link->lmm_resource).
- generic_resource).name),
- 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
- (surf_network_model->model_private->maxmin_system, nw_link->lmm_resource.constraint,
- &elem))) {
- action = lmm_variable_id(var);
- action->weight += delta;
- if (!(GENERIC_LMM_ACTION(action).suspended))
- lmm_update_variable_weight(surf_network_model->model_private->maxmin_system,
- GENERIC_LMM_ACTION(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_t action = NULL;
-
- nw_link->lat_current = value;
- while ((var = lmm_get_var_from_cnst
- (surf_network_model->model_private->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(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable,
- sg_tcp_gamma / (2.0 *
- action->lat_current));
- else {
- lmm_update_variable_bound(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable,
- min(action->rate,
- sg_tcp_gamma / (2.0 *
- 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);
- }
- }
- if (!(GENERIC_LMM_ACTION(action).suspended))
- lmm_update_variable_weight(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(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
- (surf_network_model->model_private->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 {
- XBT_CRITICAL("Unknown event ! \n");
- 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;
-}
-
-
-static surf_action_t net_communicate(sg_routing_edge_t src,
- sg_routing_edge_t dst,
- double size, double rate)
-{
- unsigned int i;
- link_CM02_t link;
- int failed = 0;
- surf_action_network_CM02_t action = NULL;
- double bandwidth_bound;
- double latency = 0.0;
- xbt_dynar_t back_route = NULL;
- int constraints_per_variable = 0;
-
- xbt_dynar_t route = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
-
- XBT_IN("(%s,%s,%g,%g)", src->name, dst->name, size, rate);
-
- routing_get_route_and_latency(src, dst, &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) {
- failed = 1;
- break;
- }
- }
- if (sg_network_crosstraffic == 1) {
- routing_get_route_and_latency(dst, src, &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->latency_limited = 0;
-#endif
- action->weight = action->latency = latency;
-
- xbt_swag_insert(action, ((surf_action_t)action)->state_set);
- action->rate = rate;
- if (surf_network_model->model_private->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) {
- double bb = bandwidth_factor_callback(size) *
- (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
- bandwidth_bound =
- (bandwidth_bound < 0.0) ? bb : min(bandwidth_bound, bb);
- }
-
- action->lat_current = action->latency;
- action->latency *= latency_factor_callback(size);
- action->rate =
- 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)!!!");
-
- 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);
- }
-
- constraints_per_variable = xbt_dynar_length(route);
- if (back_route != NULL)
- constraints_per_variable += xbt_dynar_length(back_route);
-
- if (action->latency > 0) {
- GENERIC_LMM_ACTION(action).variable =
- lmm_variable_new(surf_network_model->model_private->maxmin_system, action, 0.0, -1.0,
- constraints_per_variable);
- if (surf_network_model->model_private->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);
- surf_action_lmm_heap_insert(surf_network_model->model_private->action_heap,(surf_action_lmm_t)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(surf_network_model->model_private->maxmin_system, action, 1.0, -1.0,
- constraints_per_variable);
-
- if (action->rate < 0) {
- lmm_update_variable_bound(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable,
- (action->lat_current > 0) ?
- sg_tcp_gamma / (2.0 *
- action->lat_current) : -1.0);
- } else {
- lmm_update_variable_bound(surf_network_model->model_private->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(surf_network_model->model_private->maxmin_system, link->lmm_resource.constraint,
- GENERIC_LMM_ACTION(action).variable, 1.0);
- }
-
- if (sg_network_crosstraffic == 1) {
- XBT_DEBUG("Fullduplex active adding backward flow using 5%%");
- xbt_dynar_foreach(back_route, i, link) {
- lmm_expand(surf_network_model->model_private->maxmin_system, link->lmm_resource.constraint,
- GENERIC_LMM_ACTION(action).variable, .05);
- }
- }
-
- xbt_dynar_free(&route);
- XBT_OUT();
-
- return (surf_action_t) action;
-}
-
-static xbt_dynar_t net_get_route(void *src, void *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)
-{
- surf_resource_lmm_t lmm = (surf_resource_lmm_t) link;
- return lmm->power.peak * lmm->power.scale;
-}
-
-static double net_get_link_latency(const void *link)
-{
- return ((link_CM02_t) link)->lat_current;
-}
-
-static int net_link_shared(const void *link)
-{
- return
- lmm_constraint_is_shared(((surf_resource_lmm_t) link)->constraint);
-}
-
-static void net_finalize(void)
-{
- lmm_system_free(surf_network_model->model_private->maxmin_system);
- surf_network_model->model_private->maxmin_system = NULL;
-
- if (surf_network_model->model_private->update_mechanism == UM_LAZY) {
- xbt_heap_free(surf_network_model->model_private->action_heap);
- xbt_swag_free(surf_network_model->model_private->modified_set);
- }
-
- surf_model_exit(surf_network_model);
- surf_network_model = NULL;
-
- xbt_dict_free(&gap_lookup);
- xbt_dynar_free(&smpi_bw_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_homogeneous(NULL);
- }
- 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 = sg_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_lmm_t lmm_action)
-{
- xbt_fifo_t fifo;
- size_t size;
- surf_action_network_CM02_t action = (surf_action_network_CM02_t)(lmm_action);
-
- 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 set_update_mechanism(void)
-{
- char *optim = xbt_cfg_get_string(_sg_cfg_set, "network/optim");
- int select =
- xbt_cfg_get_boolean(_sg_cfg_set, "network/maxmin_selective_update");
-
- if (!strcmp(optim, "Full")) {
- surf_network_model->model_private->update_mechanism = UM_FULL;
- surf_network_model->model_private->selective_update = select;
- } else if (!strcmp(optim, "Lazy")) {
- surf_network_model->model_private->update_mechanism = UM_LAZY;
- surf_network_model->model_private->selective_update = 1;
- xbt_assert((select == 1)
- ||
- (xbt_cfg_is_default_value
- (_sg_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);
- }
-}
-
-static void surf_network_model_init_internal(void)
-{
- s_surf_action_network_CM02_t comm;
- surf_network_model = surf_model_init();
-
- set_update_mechanism();
-
- surf_network_model->name = "network";
- surf_network_model->action_unref = surf_action_unref;
- surf_network_model->action_cancel = surf_action_cancel;
- surf_network_model->action_recycle = net_action_recycle;
-
- surf_network_model->get_remains = surf_action_get_remains;
-
-#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 = surf_action_set_category;
-#endif
-
- surf_network_model->model_private->resource_used = net_resource_used;
- if (surf_network_model->model_private->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 (surf_network_model->model_private->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 = surf_action_suspend;
- surf_network_model->resume = surf_action_resume;
- surf_network_model->is_suspended = surf_action_is_suspended;
- surf_cpu_model->set_max_duration = surf_action_set_max_duration;
-
- surf_network_model->extension.network.communicate = net_communicate;
- surf_network_model->extension.network.get_route = net_get_route;
- surf_network_model->extension.network.get_link_bandwidth =
- net_get_link_bandwidth;
- surf_network_model->extension.network.get_link_latency =
- net_get_link_latency;
- surf_network_model->extension.network.link_shared = net_link_shared;
- surf_network_model->extension.network.add_traces = net_add_traces;
-
- if (!surf_network_model->model_private->maxmin_system)
- surf_network_model->model_private->maxmin_system = lmm_system_new(surf_network_model->model_private->selective_update);
-
- routing_model_create(net_create_resource("__loopback__",
- 498000000, NULL, 0.000015, NULL,
- SURF_RESOURCE_ON, NULL,
- SURF_LINK_FATPIPE, NULL));
-
- if (surf_network_model->model_private->update_mechanism == UM_LAZY) {
- surf_network_model->model_private->action_heap = xbt_heap_new(8, NULL);
- xbt_heap_set_update_callback(surf_network_model->model_private->action_heap,
- surf_action_lmm_update_index_heap);
- surf_network_model->model_private->modified_set =
- xbt_swag_new(xbt_swag_offset(comm, generic_lmm_action.action_list_hookup));
- surf_network_model->model_private->maxmin_system->keep_track = surf_network_model->model_private->modified_set;
- }
-
- surf_network_model->gap_remove = NULL;
-}
-
-/************************************************************************/
-/* 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;
-
- 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;
- surf_network_model->gap_remove = &smpi_gap_remove;
- net_define_callbacks();
- xbt_dynar_push(model_list, &surf_network_model);
- network_solve = lmm_solve;
-
- xbt_cfg_setdefault_double(_sg_cfg_set, "network/sender_gap", 10e-6);
- xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S", 8775);
-}
-
-/************************************************************************/
-/* 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;
-
- surf_network_model_init_internal();
- net_define_callbacks();
- xbt_dynar_push(model_list, &surf_network_model);
- network_solve = lmm_solve;
-
- xbt_cfg_setdefault_double(_sg_cfg_set, "network/latency_factor",
- 13.01);
- xbt_cfg_setdefault_double(_sg_cfg_set, "network/bandwidth_factor",
- 0.97);
- xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S", 20537);
-}
-
-/***************************************************************************/
-/* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
-/***************************************************************************/
-/* @TechReport{ rr-lip2002-40, */
-/* author = {Henri Casanova and Loris Marchal}, */
-/* institution = {LIP}, */
-/* title = {A Network Model for Simulation of Grid Application}, */
-/* number = {2002-40}, */
-/* month = {oct}, */
-/* year = {2002} */
-/* } */
-void surf_network_model_init_CM02(void)
-{
-
- if (surf_network_model)
- return;
-
- surf_network_model_init_internal();
- net_define_callbacks();
- xbt_dynar_push(model_list, &surf_network_model);
- network_solve = lmm_solve;
-
- xbt_cfg_setdefault_double(_sg_cfg_set, "network/latency_factor", 1.0);
- xbt_cfg_setdefault_double(_sg_cfg_set, "network/bandwidth_factor",
- 1.0);
- xbt_cfg_setdefault_double(_sg_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;
-
- surf_network_model_init_internal();
- net_define_callbacks();
-
- xbt_dynar_push(model_list, &surf_network_model);
- lmm_set_default_protocol_function(func_reno_f, func_reno_fp,
- func_reno_fpi);
- network_solve = lagrange_solve;
-
- xbt_cfg_setdefault_double(_sg_cfg_set, "network/latency_factor", 10.4);
- xbt_cfg_setdefault_double(_sg_cfg_set, "network/bandwidth_factor",
- 0.92);
- xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S", 8775);
-}
-
-
-void surf_network_model_init_Reno2(void)
-{
- if (surf_network_model)
- return;
-
- surf_network_model_init_internal();
- net_define_callbacks();
-
- xbt_dynar_push(model_list, &surf_network_model);
- lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
- func_reno2_fpi);
- network_solve = lagrange_solve;
-
- xbt_cfg_setdefault_double(_sg_cfg_set, "network/latency_factor", 10.4);
- xbt_cfg_setdefault_double(_sg_cfg_set, "network/bandwidth_factor",
- 0.92);
- xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S_parameter",
- 8775);
-}
-
-void surf_network_model_init_Vegas(void)
-{
- if (surf_network_model)
- return;
-
- surf_network_model_init_internal();
- net_define_callbacks();
-
- xbt_dynar_push(model_list, &surf_network_model);
- lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
- func_vegas_fpi);
- network_solve = lagrange_solve;
-
- xbt_cfg_setdefault_double(_sg_cfg_set, "network/latency_factor", 10.4);
- xbt_cfg_setdefault_double(_sg_cfg_set, "network/bandwidth_factor",
- 0.92);
- xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S", 8775);
-}
