1 /* Copyright (c) 2004-2015. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
10 #include <xbt/signal.hpp>
12 #include <simgrid/forward.h>
13 #include <simgrid/s4u/host.hpp>
15 #include "surf/datatypes.h"
16 #include "surf_interface.hpp"
17 #include "maxmin_private.hpp"
18 #include "trace_mgr.hpp"
20 #ifndef SURF_CPU_INTERFACE_HPP_
21 #define SURF_CPU_INTERFACE_HPP_
34 /** @ingroup SURF_cpu_interface
35 * @brief SURF cpu model interface class
36 * @details A model is an object which handle the interactions between its Resources and its Actions
38 XBT_PUBLIC_CLASS CpuModel : public Model {
40 CpuModel() : Model() {};
46 * @param host The host that will have this CPU
47 * @param speedPerPstate Processor speed (in Flops) of each pstate. This ignores any potential external load coming from a trace.
48 * @param core The number of core of this Cpu
50 virtual Cpu *createCpu(simgrid::s4u::Host *host, std::vector<double> *speedPerPstate, int core)=0;
52 void updateActionsStateLazy(double now, double delta) override;
53 void updateActionsStateFull(double now, double delta) override;
54 bool next_occuring_event_isIdempotent() override;
61 /** @ingroup SURF_cpu_interface
62 * @brief SURF cpu resource interface class
63 * @details A Cpu represent a cpu associated to a host
65 XBT_PUBLIC_CLASS Cpu : public simgrid::surf::Resource {
68 * @brief Cpu constructor
70 * @param model The CpuModel associated to this Cpu
71 * @param host The host in which this Cpu should be plugged
72 * @param constraint The lmm constraint associated to this Cpu if it is part of a LMM component
73 * @param speedPerPstate Processor speed (in flop per second) for each pstate
74 * @param core The number of core of this Cpu
76 Cpu(simgrid::surf::Model *model, simgrid::s4u::Host *host, lmm_constraint_t constraint,
77 std::vector<double> *speedPerPstate, int core);
80 * @brief Cpu constructor
82 * @param model The CpuModel associated to this Cpu
83 * @param host The host in which this Cpu should be plugged
84 * @param speedPerPstate Processor speed (in flop per second) for each pstate
85 * @param core The number of core of this Cpu
87 Cpu(simgrid::surf::Model *model, simgrid::s4u::Host *host, std::vector<double> *speedPerPstate, int core);
92 * @brief Execute some quantity of computation
94 * @param size The value of the processing amount (in flop) needed to process
95 * @return The CpuAction corresponding to the processing
97 virtual simgrid::surf::Action *execution_start(double size)=0;
100 * @brief Make a process sleep for duration (in seconds)
102 * @param duration The number of seconds to sleep
103 * @return The CpuAction corresponding to the sleeping
105 virtual simgrid::surf::Action *sleep(double duration)=0;
107 /** @brief Get the amount of cores */
108 virtual int getCoreCount();
110 /** @brief Get the speed, accounting for the trace load and provided process load instead of the real current one */
111 virtual double getSpeed(double load);
114 /** @brief Take speed changes (either load or max) into account */
115 virtual void onSpeedChange();
118 /** @brief Get the available speed of the current Cpu */
119 virtual double getAvailableSpeed();
121 /** @brief Get the current Cpu computational speed */
122 virtual double getPstateSpeedCurrent();
123 virtual double getPstateSpeed(int pstate_index);
125 virtual int getNbPStates();
126 virtual void setPState(int pstate_index);
127 virtual int getPState();
129 simgrid::s4u::Host* getHost() { return host_; }
132 int coresAmount_ = 1;
133 simgrid::s4u::Host* host_;
135 std::vector<double> speedPerPstate_; /*< List of supported CPU capacities (pstate related) */
136 int pstate_ = 0; /*< Current pstate (index in the speedPeakList)*/
139 virtual void setStateTrace(tmgr_trace_t trace); /*< setup the trace file with states events (ON or OFF). Trace must contain boolean values (0 or 1). */
140 virtual void setSpeedTrace(tmgr_trace_t trace); /*< setup the trace file with availability events (peak speed changes due to external load). Trace must contain relative values (ratio between 0 and 1) */
142 tmgr_trace_iterator_t stateEvent_ = nullptr;
143 s_surf_metric_t speed_ = {1.0, 0, nullptr};
150 /** @ingroup SURF_cpu_interface
151 * @brief A CpuAction represents the execution of code on one or several Cpus
153 XBT_PUBLIC_CLASS CpuAction : public simgrid::surf::Action {
154 friend XBT_PUBLIC(Cpu*) getActionCpu(CpuAction *action);
156 /** @brief Signal emitted when the action state changes (ready/running/done, etc)
157 * Signature: `void(CpuAction *action, simgrid::surf::Action::State previous)`
159 static simgrid::xbt::signal<void(simgrid::surf::CpuAction*, simgrid::surf::Action::State)> onStateChange;
160 /** @brief Signal emitted when the action share changes (amount of flops it gets)
161 * Signature: `void(CpuAction *action)`
163 static simgrid::xbt::signal<void(simgrid::surf::CpuAction*)> onShareChange;
165 CpuAction(simgrid::surf::Model *model, double cost, bool failed)
166 : Action(model, cost, failed) {}
167 CpuAction(simgrid::surf::Model *model, double cost, bool failed, lmm_variable_t var)
168 : Action(model, cost, failed, var) {}
170 void setState(simgrid::surf::Action::State state) override;
172 void updateRemainingLazy(double now) override;
173 std::list<Cpu*> cpus();
179 #endif /* SURF_CPU_INTERFACE_HPP_ */