-/* Copyright (c) 2004-2020. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2004-2021. 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. */
namespace kernel {
namespace resource {
-/** @ingroup SURF_cpu_interface
- * @brief SURF cpu model interface class
- * @details A model is an object which handle the interactions between its Resources and its Actions
- */
+class CpuAction;
+
+/*********
+ * Model *
+ *********/
class XBT_PUBLIC CpuModel : public Model {
public:
- explicit CpuModel(Model::UpdateAlgo algo) : Model(algo) {}
+ using Model::Model;
/**
* @brief Create a Cpu
* Resource *
************/
-class CpuAction;
+class XBT_PUBLIC Cpu : public Resource_T<Cpu> {
+ friend vm::VirtualMachineImpl; // Resets the VCPU
-/** @ingroup SURF_cpu_interface
-* @brief SURF cpu resource interface class
-* @details A Cpu represent a cpu associated to a host
-*/
-class XBT_PUBLIC Cpu : public Resource {
+ s4u::Host* piface_;
int core_count_ = 1;
- s4u::Host* host_;
int pstate_ = 0; /*< Current pstate (index in the speed_per_pstate_)*/
std::vector<double> speed_per_pstate_; /*< List of supported CPU capacities (pstate related). Not 'const' because VCPU
get modified on migration */
- friend simgrid::vm::VirtualMachineImpl; // Resets the VCPU
public:
/**
* @brief Cpu constructor
*
- * @param model The CpuModel associated to this Cpu
* @param host The host in which this Cpu should be plugged
- * @param constraint The lmm constraint associated to this Cpu if it is part of a LMM component
- * @param speedPerPstate Processor speed (in flop per second) for each pstate
- * @param core The number of core of this Cpu
+ * @param speed_per_pstate Processor speed (in flop per second) for each pstate
*/
- Cpu(Model* model, s4u::Host* host, lmm::Constraint* constraint, const std::vector<double>& speed_per_pstate,
- int core);
+ Cpu(s4u::Host* host, const std::vector<double>& speed_per_pstate);
- /**
- * @brief Cpu constructor
+ Cpu(const Cpu&) = delete;
+ Cpu& operator=(const Cpu&) = delete;
+
+ /** @brief Public interface */
+ s4u::Host* get_iface() { return piface_; }
+
+ Cpu* set_core_count(int core_count);
+ virtual int get_core_count();
+
+ void seal();
+
+ /** @brief Get a forecast of the speed (in flops/s) if the load were as provided.
*
- * @param model The CpuModel associated to this Cpu
- * @param host The host in which this Cpu should be plugged
- * @param speedPerPstate Processor speed (in flop per second) for each pstate
- * @param core The number of core of this Cpu
+ * The provided load should encompasses both the application's activities and the external load that come from a
+ * trace.
+ *
+ * Use a load of 1.0 to compute the amount of flops that the Cpu would deliver with one CPU-bound task.
+ * If you use a load of 0, this function will return 0: when nobody is using the Cpu, it delivers nothing.
+ *
+ * If you want to know the amount of flops currently delivered, use load = get_load()*get_speed_ratio()
*/
- Cpu(Model* model, s4u::Host* host, const std::vector<double>& speed_per_pstate, int core);
+ virtual double get_speed(double load) const { return load * speed_.peak; }
- Cpu(const Cpu&) = delete;
- Cpu& operator=(const Cpu&) = delete;
+ /** @brief Get the available speed ratio, in [0:1]. This accounts for external load (see @ref set_speed_profile()). */
+ virtual double get_speed_ratio() { return speed_.scale; }
+
+ /** @brief Get the peak processor speed (in flops/s), at the specified pstate */
+ virtual double get_pstate_peak_speed(int pstate_index) const;
+
+ virtual int get_pstate_count() const { return speed_per_pstate_.size(); }
+
+ virtual void set_pstate(int pstate_index);
+ virtual int get_pstate() const { return pstate_; }
+
+ /*< @brief Setup the trace file with availability events (peak speed changes due to external load).
+ * Trace must contain relative values (ratio between 0 and 1)
+ */
+ virtual void set_speed_profile(profile::Profile* profile);
/**
* @brief Execute some quantity of computation
*/
virtual CpuAction* sleep(double duration) = 0;
- /** @brief Get the amount of cores */
- virtual int get_core_count();
-
- /** @brief Get a forecast of the speed (in flops/s) if the load were as provided.
- *
- * The provided load should encompasses both the application's activities and the external load that come from a trace.
- *
- * Use a load of 1.0 to compute the amount of flops that the Cpu would deliver with one CPU-bound task.
- * If you use a load of 0, this function will return 0: when nobody is using the Cpu, it delivers nothing.
- *
- * If you want to know the amount of flops currently delivered, use load = get_load()*get_speed_ratio()
- */
- virtual double get_speed(double load) const;
-
protected:
/** @brief Take speed changes (either load or max) into account */
virtual void on_speed_change();
**/
virtual void reset_vcpu(Cpu* that);
-public:
- /** @brief Get the available speed ratio, between 0 and 1.
- *
- * This accounts for external load (see @ref set_speed_trace()).
- */
- virtual double get_speed_ratio();
-
- /** @brief Get the peak processor speed (in flops/s), at the specified pstate */
- virtual double get_pstate_peak_speed(int pstate_index) const;
-
- virtual int get_pstate_count() const;
- virtual void set_pstate(int pstate_index);
- virtual int get_pstate() const;
-
- s4u::Host* get_host() { return host_; }
-
- /*< @brief Setup the trace file with availability events (peak speed changes due to external load).
- * Trace must contain relative values (ratio between 0 and 1)
- */
- virtual void set_speed_profile(profile::Profile* profile);
-
-protected:
Metric speed_ = {1.0, 0, nullptr};
};
*/
static xbt::signal<void(CpuAction const&, Action::State)> on_state_change;
- CpuAction(Model* model, double cost, bool failed) : Action(model, cost, failed) {}
- CpuAction(Model* model, double cost, bool failed, lmm::Variable* var) : Action(model, cost, failed, var) {}
+ using Action::Action;
void set_state(Action::State state) override;
