-/* Copyright (c) 2013-2021. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2013-2022. 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. */
-#include "disk_s19.hpp"
-#include "simgrid/kernel/routing/NetPoint.hpp"
-#include "simgrid/kernel/routing/NetZoneImpl.hpp"
-#include "simgrid/s4u/Engine.hpp"
-#include "simgrid/s4u/Host.hpp"
+#include "simgrid/sg_config.hpp"
+#include <simgrid/kernel/routing/NetPoint.hpp>
+#include <simgrid/kernel/routing/NetZoneImpl.hpp>
+#include <simgrid/s4u/Engine.hpp>
+#include <simgrid/s4u/Host.hpp>
+
#include "src/kernel/EngineImpl.hpp"
#include "src/kernel/lmm/maxmin.hpp"
#include "src/kernel/resource/profile/Event.hpp"
-#include "src/surf/xml/platf.hpp"
-#include "surf/surf.hpp"
+#include "src/surf/disk_s19.hpp"
XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(res_disk);
+/***********
+ * Options *
+ ***********/
+static simgrid::config::Flag<std::string> cfg_disk_solver("disk/solver",
+ "Set linear equations solver used by disk model", "maxmin",
+ &simgrid::kernel::lmm::System::validate_solver);
/*********
* Model *
*********/
-void surf_disk_model_init_default()
+void surf_disk_model_init_S19()
{
auto disk_model = std::make_shared<simgrid::kernel::resource::DiskS19Model>("Disk");
- simgrid::kernel::EngineImpl::get_instance()->add_model(disk_model);
- simgrid::s4u::Engine::get_instance()->get_netzone_root()->get_impl()->set_disk_model(disk_model);
+ auto* engine = simgrid::kernel::EngineImpl::get_instance();
+ engine->add_model(disk_model);
+ engine->get_netzone_root()->set_disk_model(disk_model);
+}
+
+namespace simgrid::kernel::resource {
+/*********
+ * Model *
+ *********/
+
+DiskS19Model::DiskS19Model(const std::string& name) : DiskModel(name)
+{
+ set_maxmin_system(lmm::System::build(cfg_disk_solver.get(), true /* selective update */));
}
-namespace simgrid {
-namespace kernel {
-namespace resource {
DiskImpl* DiskS19Model::create_disk(const std::string& name, double read_bandwidth, double write_bandwidth)
{
}
}
-DiskAction* DiskS19Model::io_start(const DiskImpl* disk, sg_size_t size, s4u::Io::OpType type)
-{
- auto* action = new DiskS19Action(this, static_cast<double>(size), not disk->is_on());
- get_maxmin_system()->expand(disk->get_constraint(), action->get_variable(), 1.0);
- switch (type) {
- case s4u::Io::OpType::READ:
- get_maxmin_system()->expand(disk->get_read_constraint(), action->get_variable(), 1.0);
- break;
- case s4u::Io::OpType::WRITE:
- get_maxmin_system()->expand(disk->get_write_constraint(), action->get_variable(), 1.0);
- break;
- default:
- THROW_UNIMPLEMENTED;
- }
- return action;
-}
-
/************
* Resource *
************/
-void DiskS19::update_penalties(double delta) const
-{
- const kernel::lmm::Element* elem = nullptr;
- const kernel::lmm::Element* nextelem = nullptr;
- size_t numelem = 0;
- while (const auto* var = get_constraint()->get_variable_safe(&elem, &nextelem, &numelem)) {
- auto* action = static_cast<DiskS19Action*>(var->get_id());
- action->sharing_penalty_ += delta;
- if (not action->is_suspended())
- get_model()->get_maxmin_system()->update_variable_penalty(action->get_variable(), action->sharing_penalty_);
- }
-}
-
-void DiskS19::set_read_bandwidth(double value)
-{
- read_bw_.peak = value;
-
- get_model()->get_maxmin_system()->update_constraint_bound(get_constraint(), read_bw_.peak * read_bw_.scale);
-
- double delta = 1.0 / value - 1.0 / (read_bw_.peak * read_bw_.scale);
- update_penalties(delta);
-}
-
-void DiskS19::set_write_bandwidth(double value)
-{
- write_bw_.peak = value;
-
- get_model()->get_maxmin_system()->update_constraint_bound(get_constraint(), write_bw_.peak * write_bw_.scale);
-
- double delta = 1.0 / value - 1.0 / (write_bw_.peak * write_bw_.scale);
- update_penalties(delta);
-}
-
-void DiskS19::set_readwrite_bandwidth(double value)
-{
- readwrite_bw_ = value;
- if (get_constraint())
- get_model()->get_maxmin_system()->update_constraint_bound(get_constraint(), readwrite_bw_);
-}
void DiskS19::apply_event(kernel::profile::Event* triggered, double value)
{
/* Find out which of my iterators was triggered, and react accordingly */
- if (triggered == read_bw_.event) {
+ if (triggered == get_read_event()) {
set_read_bandwidth(value);
- tmgr_trace_event_unref(&read_bw_.event);
-
- } else if (triggered == write_bw_.event) {
+ unref_read_event();
+ } else if (triggered == get_write_event()) {
set_write_bandwidth(value);
- tmgr_trace_event_unref(&write_bw_.event);
-
- } else if (triggered == state_event_) {
+ unref_write_event();
+ } else if (triggered == get_state_event()) {
if (value > 0)
turn_on();
else
turn_off();
- tmgr_trace_event_unref(&state_event_);
+ unref_state_event();
} else {
xbt_die("Unknown event!\n");
}
{
}
-void DiskS19Action::update_remains_lazy(double /*now*/)
+DiskAction* DiskS19::io_start(sg_size_t size, s4u::Io::OpType type)
{
- THROW_IMPOSSIBLE;
+ auto* action = new DiskS19Action(get_model(), static_cast<double>(size), not is_on());
+ get_model()->get_maxmin_system()->expand(get_constraint(), action->get_variable(), 1.0);
+ switch (type) {
+ case s4u::Io::OpType::READ:
+ get_model()->get_maxmin_system()->expand(get_read_constraint(), action->get_variable(), 1.0);
+ break;
+ case s4u::Io::OpType::WRITE:
+ get_model()->get_maxmin_system()->expand(get_write_constraint(), action->get_variable(), 1.0);
+ break;
+ default:
+ THROW_UNIMPLEMENTED;
+ }
+ if (const auto& factor_cb = get_factor_cb()) { // handling disk variability
+ action->set_rate_factor(factor_cb(size, type));
+ }
+ return action;
}
-} // namespace resource
-} // namespace kernel
-} // namespace simgrid
+
+} // namespace simgrid::kernel::resource
