-
-/*
- * 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 "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"
-
-
-#undef GENERIC_ACTION
-#define GENERIC_ACTION(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 lmm_system_t network_im_maxmin_system = NULL;
-static void (*network_im_solve) (lmm_system_t) = NULL;
-
-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;
-
-e_UM_t network_update_mechanism = UM_UNDEFINED;
-static int selective_update = 0;
-
-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;
-
-static int im_net_action_is_suspended(surf_action_t action);
-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;
-
-#ifdef HAVE_SMPI
-static void gap_append(double size, const link_CM02_im_t link, surf_action_network_CM02_im_t action);
-static void gap_unknown(surf_action_network_CM02_im_t action);
-static void gap_remove(surf_action_network_CM02_im_t action);
-#endif
-
-/* 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;
-}
-
-
-/**********************/
-/* SMPI callbacks */
-/**********************/
-static double smpi_latency_factor(double size)
-{
- /* 1 B <= size <= 1 KiB */
- if (size <= 1024.0) {
- return 1.0056;
- }
-
- /* 2 KiB <= size <= 32 KiB */
- if (size <= 32768.0) {
- return 1.8805;
- }
-
- /* 64 KiB <= size <= 4 MiB */
- return 22.7111;
-}
-
-static double smpi_bandwidth_factor(double size)
-{
- /* 1 B <= size <= 1 KiB */
- if (size <= 1024.0) {
- return 0.2758;
- }
-
- /* 2 KiB <= size <= 32 KiB */
- if (size <= 32768.0) {
- return 0.5477;
- }
-
- /* 64 KiB <= size <= 4 MiB */
- return 0.9359;
-}
-
-static double smpi_bandwidth_constraint(double rate, double bound,
- double size)
-{
- return rate < 0 ? bound : min(bound, rate * smpi_bandwidth_factor(size));
-}
-
-static double (*im_latency_factor_callback) (double) =
- &im_constant_latency_factor;
-static double (*im_bandwidth_factor_callback) (double) =
- &im_constant_bandwidth_factor;
-static double (*im_bandwidth_constraint_callback) (double, double, double) =
- &im_constant_bandwidth_constraint;
-
-
-static void* im_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_im_t nw_link = (link_CM02_im_t)
- surf_resource_lmm_new(sizeof(s_link_CM02_im_t),
- surf_network_model, name, properties,
- network_im_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);
-
- return nw_link;
-}
-
-static void im_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);
- im_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);
- im_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{
- im_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 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_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_im_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_im_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 im_net_define_callbacks(void)
-{
- /* Figuring out the network links */
- sg_platf_link_add_cb(im_net_parse_link_init);
- sg_platf_postparse_add_cb(im_net_add_traces);
-}
-
-static int im_net_resource_used(void *resource_id)
-{
- return lmm_constraint_used(network_im_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_im_maxmin_system,
- ((surf_action_network_CM02_im_t) action)->variable);
- }
- if(network_update_mechanism == UM_LAZY){// 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);
- xbt_free(action->category);
-#endif
- surf_action_free(&action);
- return 1;
- }
- return 0;
-}
-
-
-
-static void im_net_action_cancel(surf_action_t 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, im_net_modified_set);
- heap_remove((surf_action_network_CM02_im_t) action);
- }
-}
-
-void im_net_action_recycle(surf_action_t action)
-{
- return;
-}
-
-#ifdef HAVE_LATENCY_BOUND_TRACKING
-static 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)
-{
- if(network_update_mechanism == UM_LAZY)/* 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 net_share_resources_full(double now)
-{
- s_surf_action_network_CM02_im_t s_action;
- surf_action_network_CM02_im_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),
- network_im_maxmin_system,
- network_im_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(action->variable)) {
- (action->generic_action).latency_limited = 1;
- } else {
- (action->generic_action).latency_limited = 0;
- }
-#endif
- if (action->latency > 0) {
- if (min < 0)
- min = action->latency;
- else if (action->latency < min)
- min = action->latency;
- }
- }
-
- XBT_DEBUG("Min of share resources %f", min);
-
- return min;
-}
-
-static double net_share_resources_lazy(double now)
-{
- surf_action_network_CM02_im_t action = NULL;
- double min=-1;
- double value;
-
- XBT_DEBUG("Before share resources, the size of modified actions set is %d", xbt_swag_size(im_net_modified_set));
- update_action_remaining(now);
-
- keep_track = im_net_modified_set;
- lmm_solve(network_im_maxmin_system);
- keep_track = NULL;
-
- XBT_DEBUG("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;
- }
-
- XBT_DEBUG("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);
- XBT_DEBUG("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;
- }
-
- 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_im_t action = NULL;
- surf_action_network_CM02_im_t next_action = NULL;
- xbt_swag_t running_actions =
- surf_network_model->states.running_action_set;
- /*
- xbt_swag_t failed_actions =
- surf_network_model->states.failed_action_set;
- */
-
- xbt_swag_foreach_safe(action, next_action, running_actions) {
- deltap = delta;
- if (action->latency > 0) {
- if (action->latency > deltap) {
- double_update(&(action->latency), deltap);
- deltap = 0.0;
- } else {
- double_update(&(deltap), action->latency);
- action->latency = 0.0;
- }
- if ((action->latency == 0.0) && !(action->suspended))
- lmm_update_variable_weight(network_im_maxmin_system, action->variable,
- action->weight);
- }
-#ifdef HAVE_TRACING
- if (TRACE_is_enabled()) {
- xbt_dynar_t route=NULL;
- routing_get_route_and_latency(action->src_name, action->dst_name,&route,NULL);
- link_CM02_im_t link;
- unsigned int i;
- xbt_dynar_foreach(route, i, link) {
- 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,
- delta);
- }
- }
-#endif
- if(!lmm_get_number_of_cnst_from_var(network_im_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);
- }
- 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();
- surf_network_model->action_state_set((surf_action_t) action,
- SURF_ACTION_DONE);
-#ifdef HAVE_SMPI
- gap_remove(action);
-#endif
- } 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);
-#ifdef HAVE_SMPI
- gap_remove(action);
-#endif
- }
- }
-
- return;
-}
-
-static void net_update_actions_state_lazy(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);
- XBT_DEBUG("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_im_maxmin_system, action->variable,
- action->weight);
- heap_remove(action);
- action->last_update = surf_get_clock();
-
- XBT_DEBUG("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 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_im_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
- (network_im_maxmin_system, nw_link->lmm_resource.constraint,
- &elem))) {
- action = lmm_variable_id(var);
- action->weight += delta;
- if (!(action->suspended))
- lmm_update_variable_weight(network_im_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_im_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_im_maxmin_system, action->variable,
- sg_tcp_gamma / (2.0 *
- action->lat_current));
- else {
- lmm_update_variable_bound(network_im_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)) {
- XBT_INFO("Flow is limited BYBANDWIDTH");
- } else {
- XBT_INFO("Flow is limited BYLATENCY, latency of flow is %f",
- action->lat_current);
- }
- }
- if (!(action->suspended))
- lmm_update_variable_weight(network_im_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_im_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 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;
- double latency=0.0;
- /* 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 need to have the forward and backward routes at the same time, so allocate "route". That way, the routing wont clean it up
- xbt_dynar_t route=xbt_dynar_new(global_routing->size_of_link,NULL);
- routing_get_route_and_latency(src_name, dst_name, &route, &latency);
-
- if (sg_network_crosstraffic == 1) {
- // FIXME: fill route directly (unclear: check with blame who put the FIXME)
- routing_get_route_and_latency(dst_name, src_name, &back_route,NULL);
- }
-
- /* LARGE PLATFORMS HACK:
- total_route_size = route_size + src->link_nb + dst->nb */
-
- XBT_IN("(%s,%s,%g,%g)", src_name, dst_name, size, rate);
- /* LARGE PLATFORMS HACK:
- assert on total_route_size */
- 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) {
- 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_im_t), size,
- surf_network_model, failed);
-#ifdef HAVE_LATENCY_BOUND_TRACKING
- (action->generic_action).latency_limited = 0;
-#endif
- action->weight = action->latency = latency;
-
- xbt_swag_insert(action, action->generic_action.state_set);
- action->rate = rate;
- if(network_update_mechanism == UM_LAZY){
- 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->weight +=
- sg_weight_S_parameter /
- (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
- if (bandwidth_bound < 0.0)
- bandwidth_bound =
- im_bandwidth_factor_callback(size) *
- (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
- else
- bandwidth_bound =
- min(bandwidth_bound,
- im_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 *= im_latency_factor_callback(size);
- action->rate =
- im_bandwidth_constraint_callback(action->rate, bandwidth_bound,
- size);
-#ifdef HAVE_SMPI
- if(!xbt_dynar_is_empty(route)) {
- link = *(link_CM02_im_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);
- }
-#endif
-
- /* 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_im_maxmin_system, action, 0.0, -1.0,
- constraints_per_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 + 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_im_maxmin_system, action, 1.0, -1.0,
- constraints_per_variable);
-
- if (action->rate < 0) {
- if (action->lat_current > 0)
- lmm_update_variable_bound(network_im_maxmin_system, action->variable,
- sg_tcp_gamma / (2.0 *
- action->lat_current));
- else
- lmm_update_variable_bound(network_im_maxmin_system, action->variable,
- -1.0);
- } else {
- if (action->lat_current > 0)
- lmm_update_variable_bound(network_im_maxmin_system, action->variable,
- min(action->rate,
- sg_tcp_gamma / (2.0 *
- action->lat_current)));
- else
- lmm_update_variable_bound(network_im_maxmin_system, action->variable,
- action->rate);
- }
-
- xbt_dynar_foreach(route, i, link) {
- lmm_expand(network_im_maxmin_system, link->lmm_resource.constraint,
- action->variable, 1.0);
- }
-
- if (sg_network_crosstraffic == 1) {
- XBT_DEBUG("Fullduplex active adding backward flow using 5%c", '%');
- xbt_dynar_foreach(back_route, i, link) {
- lmm_expand(network_im_maxmin_system, link->lmm_resource.constraint,
- 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();
-
- return (surf_action_t) action;
-}
-
-static xbt_dynar_t im_net_get_route(const char *src, const char *dst)
-{
- xbt_dynar_t route=NULL;
- routing_get_route_and_latency(src, dst,&route,NULL);
- return route;
-}
-
-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_im_maxmin_system,
- ((surf_action_network_CM02_im_t)
- action)->variable, 0.0);
-
- if(network_update_mechanism == UM_LAZY)// 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_im_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;
- if(network_update_mechanism == UM_LAZY)// 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;
- if(network_update_mechanism == UM_LAZY)// remove action from the heap
- heap_remove((surf_action_network_CM02_im_t) action);
-}
-
-#ifdef HAVE_TRACING
-static void net_action_set_category(surf_action_t action, const char *category)
-{
- action->category = xbt_strdup (category);
-}
-#endif
-
-static void im_net_finalize(void)
-{
- surf_model_exit(surf_network_model);
- surf_network_model = NULL;
-
- lmm_system_free(network_im_maxmin_system);
- network_im_maxmin_system = NULL;
-
- if(network_update_mechanism == UM_LAZY){
- xbt_heap_free(im_net_action_heap);
- xbt_swag_free(im_net_modified_set);
- }
-}
-
-#ifdef HAVE_SMPI
-static void gap_append(double size, const link_CM02_im_t link, surf_action_network_CM02_im_t action) {
- const char* src = link->lmm_resource.generic_resource.name;
- xbt_fifo_t fifo;
- surf_action_network_CM02_im_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_im_t)xbt_fifo_get_item_content(xbt_fifo_get_last_item(fifo));
- bw = im_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_im_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_im_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);
- }
- }
- }
-}
-#endif
-
-static void im_surf_network_model_init_internal(void)
-{
- s_surf_action_network_CM02_im_t comm;
- 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;
- 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 = 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_im_maxmin_system)
- network_im_maxmin_system = lmm_system_new(selective_update);
-
- routing_model_create(sizeof(link_CM02_im_t),
- im_net_create_resource("__loopback__",
- 498000000, NULL, 0.000015, NULL,
- SURF_RESOURCE_ON, NULL,
- SURF_LINK_FATPIPE, NULL));
-
- if(network_update_mechanism == UM_LAZY){
- im_net_action_heap = xbt_heap_new(8,NULL);
- xbt_heap_set_update_callback(im_net_action_heap, im_net_action_update_index_heap);
- im_net_modified_set =
- xbt_swag_new(xbt_swag_offset(comm, action_list_hookup));
- }
-}
-
-static void set_update_mechanism(void) {
- 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;
- selective_update = select;
- } else if (!strcmp(optim,"Lazy")) {
- network_update_mechanism = UM_LAZY;
- 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();
-
- im_surf_network_model_init_internal();
- im_latency_factor_callback = &smpi_latency_factor;
- im_bandwidth_factor_callback = &smpi_bandwidth_factor;
- im_bandwidth_constraint_callback = &smpi_bandwidth_constraint;
- im_net_define_callbacks();
- xbt_dynar_push(model_list, &surf_network_model);
- network_im_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);
-}
-
-/************************************************************************/
-/* 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 im_surf_network_model_init_LegrandVelho(void)
-{
- char *model = xbt_cfg_get_string(_surf_cfg_set, "network/model");
-
- if (surf_network_model)
- return;
-
- if(!strcmp(model,"LV08_fullupdate")) {
- XBT_WARN("[*Deprecated*. Use --cfg=network/model:LV08 with option --cfg=network/optim:Full instead.]");
- }
- set_update_mechanism();
-
- im_surf_network_model_init_internal();
- im_net_define_callbacks();
- xbt_dynar_push(model_list, &surf_network_model);
- network_im_solve = lmm_solve;
-
- xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4); // 13.01 when callibration is done without phase effects
- xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",0.92);// 0.97 when callibration is done without phase effects
- xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775); // 20537 when callibration is done without phase effects
-}
-
-/***************************************************************************/
-/* 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;
-
- set_update_mechanism();
- im_surf_network_model_init_internal();
- im_net_define_callbacks();
- xbt_dynar_push(model_list, &surf_network_model);
- network_im_solve = lmm_solve;
-
- 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();
- im_surf_network_model_init_internal();
- im_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_im_solve = lagrange_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);
-}
-
-
-void surf_network_model_init_Reno2(void)
-{
- if (surf_network_model)
- return;
-
- set_update_mechanism();
- im_surf_network_model_init_internal();
- im_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_im_solve = lagrange_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_parameter",
- 8775);
-}
-
-void surf_network_model_init_Vegas(void)
-{
- if (surf_network_model)
- return;
-
- set_update_mechanism();
- im_surf_network_model_init_internal();
- im_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_im_solve = lagrange_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);
-}