-/* Copyright (c) 2004-2021. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2004-2022. 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. */
for (Constraint& cnst : cnst_list) {
/* INIT: Collect constraints that actually need to be saturated (i.e remaining and usage are strictly positive)
* into cnst_light_tab. */
- cnst.remaining_ = cnst.bound_;
- if (not double_positive(cnst.remaining_, cnst.bound_ * sg_maxmin_precision))
+ cnst.dynamic_bound_ = cnst.bound_;
+ if (cnst.get_sharing_policy() == Constraint::SharingPolicy::NONLINEAR && cnst.dyn_constraint_cb_) {
+ cnst.dynamic_bound_ = cnst.dyn_constraint_cb_(cnst.bound_, cnst.concurrency_current_);
+ }
+ cnst.remaining_ = cnst.dynamic_bound_;
+ if (not double_positive(cnst.remaining_, cnst.dynamic_bound_ * sg_maxmin_precision))
continue;
cnst.usage_ = 0;
for (Element& elem : cnst.enabled_element_set_) {
XBT_DEBUG("Setting %p (%d) value to %f\n", &var, var.rank_, var.value_);
} else {
// Variables which bound is different are not considered for this cycle, but they will be afterwards.
- XBT_DEBUG("Do not consider %p (%d) \n", &var, var.rank_);
+ XBT_DEBUG("Do not consider %p (%d)\n", &var, var.rank_);
var_list.pop_front();
continue;
}
}
- XBT_DEBUG("Min usage: %f, Var(%d).penalty: %f, Var(%d).value: %f ", min_usage, var.rank_, var.sharing_penalty_,
+ XBT_DEBUG("Min usage: %f, Var(%d).penalty: %f, Var(%d).value: %f", min_usage, var.rank_, var.sharing_penalty_,
var.rank_, var.value_);
/* Update the usage of constraints where this variable is involved */
Constraint* cnst = elem.constraint;
if (cnst->sharing_policy_ != Constraint::SharingPolicy::FATPIPE) {
// Remember: shared constraints require that sum(elem.value * var.value) < cnst->bound
- double_update(&(cnst->remaining_), elem.consumption_weight * var.value_, cnst->bound_ * sg_maxmin_precision);
+ double_update(&(cnst->remaining_), elem.consumption_weight * var.value_,
+ cnst->dynamic_bound_ * sg_maxmin_precision);
double_update(&(cnst->usage_), elem.consumption_weight / var.sharing_penalty_, sg_maxmin_precision);
// If the constraint is saturated, remove it from the set of active constraints (light_tab)
if (not double_positive(cnst->usage_, sg_maxmin_precision) ||
- not double_positive(cnst->remaining_, cnst->bound_ * sg_maxmin_precision)) {
+ not double_positive(cnst->remaining_, cnst->dynamic_bound_ * sg_maxmin_precision)) {
if (cnst->cnst_light_) {
size_t index = (cnst->cnst_light_ - cnst_light_tab);
- XBT_DEBUG("index: %zu \t cnst_light_num: %d \t || usage: %f remaining: %f bound: %f ", index,
- cnst_light_num, cnst->usage_, cnst->remaining_, cnst->bound_);
+ XBT_DEBUG("index: %zu \t cnst_light_num: %d \t || usage: %f remaining: %f bound: %f", index,
+ cnst_light_num, cnst->usage_, cnst->remaining_, cnst->dynamic_bound_);
cnst_light_tab[index] = cnst_light_tab[cnst_light_num - 1];
cnst_light_tab[index].cnst->cnst_light_ = &cnst_light_tab[index];
cnst_light_num--;
}
// If the constraint is saturated, remove it from the set of active constraints (light_tab)
if (not double_positive(cnst->usage_, sg_maxmin_precision) ||
- not double_positive(cnst->remaining_, cnst->bound_ * sg_maxmin_precision)) {
+ not double_positive(cnst->remaining_, cnst->dynamic_bound_ * sg_maxmin_precision)) {
if (cnst->cnst_light_) {
size_t index = (cnst->cnst_light_ - cnst_light_tab);
XBT_DEBUG("index: %zu \t cnst_light_num: %d \t || \t cnst: %p \t cnst->cnst_light: %p "
- "\t cnst_light_tab: %p usage: %f remaining: %f bound: %f ",
+ "\t cnst_light_tab: %p usage: %f remaining: %f bound: %f",
index, cnst_light_num, cnst, cnst->cnst_light_, cnst_light_tab, cnst->usage_, cnst->remaining_,
- cnst->bound_);
+ cnst->dynamic_bound_);
cnst_light_tab[index] = cnst_light_tab[cnst_light_num - 1];
cnst_light_tab[index].cnst->cnst_light_ = &cnst_light_tab[index];
cnst_light_num--;
void System::update_variable_penalty(Variable* var, double penalty)
{
xbt_assert(penalty >= 0, "Variable penalty should not be negative!");
-
if (penalty == var->sharing_penalty_)
return;
bool enabling_var = (penalty > 0 && var->sharing_penalty_ <= 0);
bool disabling_var = (penalty <= 0 && var->sharing_penalty_ > 0);
- XBT_IN("(sys=%p, var=%p, penalty=%f)", this, var, penalty);
+ XBT_IN("(sys=%p, var=%p, var->sharing_penalty = %f, penalty=%f)", this, var, var->sharing_penalty_, penalty);
modified_ = true;
disable_var(var);
} else {
var->sharing_penalty_ = penalty;
+ if (not var->cnsts_.empty())
+ update_modified_set(var->cnsts_[0].constraint);
}
check_concurrency();
[](const Element& elem) { return elem.consumption_weight > 0; }));
}
+void Constraint::set_sharing_policy(SharingPolicy policy, const s4u::NonLinearResourceCb& cb)
+{
+ xbt_assert(policy == SharingPolicy::NONLINEAR || not cb,
+ "Invalid sharing policy for constraint. Callback should be used with NONLINEAR sharing policy");
+ sharing_policy_ = policy;
+ dyn_constraint_cb_ = cb;
+}
+
} // namespace lmm
} // namespace kernel
} // namespace simgrid