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() {};
41 ~CpuModel() = default;
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;
60 /** @ingroup SURF_cpu_interface
61 * @brief SURF cpu resource interface class
62 * @details A Cpu represent a cpu associated to a host
64 XBT_PUBLIC_CLASS Cpu : public simgrid::surf::Resource {
67 * @brief Cpu constructor
69 * @param model The CpuModel associated to this Cpu
70 * @param host The host in which this Cpu should be plugged
71 * @param constraint The lmm constraint associated to this Cpu if it is part of a LMM component
72 * @param speedPerPstate Processor speed (in flop per second) for each pstate
73 * @param core The number of core of this Cpu
75 Cpu(simgrid::surf::Model *model, simgrid::s4u::Host *host, lmm_constraint_t constraint,
76 std::vector<double> *speedPerPstate, int core);
79 * @brief Cpu constructor
81 * @param model The CpuModel associated to this Cpu
82 * @param host The host in which this Cpu should be plugged
83 * @param speedPerPstate Processor speed (in flop per second) for each pstate
84 * @param core The number of core of this Cpu
86 Cpu(simgrid::surf::Model *model, simgrid::s4u::Host *host, std::vector<double> *speedPerPstate, int core);
91 * @brief Execute some quantity of computation
93 * @param size The value of the processing amount (in flop) needed to process
94 * @return The CpuAction corresponding to the processing
96 virtual simgrid::surf::Action *execution_start(double size)=0;
99 * @brief Make a process sleep for duration (in seconds)
101 * @param duration The number of seconds to sleep
102 * @return The CpuAction corresponding to the sleeping
104 virtual simgrid::surf::Action *sleep(double duration)=0;
106 /** @brief Get the amount of cores */
107 virtual int coreCount();
109 /** @brief Get the speed, accounting for the trace load and provided process load instead of the real current one */
110 virtual double getSpeed(double load);
113 /** @brief Take speed changes (either load or max) into account */
114 virtual void onSpeedChange();
117 /** @brief Get the available speed of the current Cpu */
118 virtual double getAvailableSpeed();
120 /** @brief Get the current Cpu computational speed */
121 virtual double getPstateSpeedCurrent();
122 virtual double getPstateSpeed(int pstate_index);
124 virtual int getNbPStates();
125 virtual void setPState(int pstate_index);
126 virtual int getPState();
128 simgrid::s4u::Host* getHost() { return host_; }
131 int coresAmount_ = 1;
132 simgrid::s4u::Host* host_;
134 std::vector<double> speedPerPstate_; /*< List of supported CPU capacities (pstate related) */
135 int pstate_ = 0; /*< Current pstate (index in the speedPeakList)*/
138 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). */
139 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) */
141 tmgr_trace_iterator_t stateEvent_ = nullptr;
142 s_surf_metric_t speed_ = {1.0, 0, nullptr};
149 /** @ingroup SURF_cpu_interface
150 * @brief A CpuAction represents the execution of code on one or several Cpus
152 XBT_PUBLIC_CLASS CpuAction : public simgrid::surf::Action {
153 friend XBT_PUBLIC(Cpu*) getActionCpu(CpuAction *action);
155 /** @brief Signal emitted when the action state changes (ready/running/done, etc)
156 * Signature: `void(CpuAction *action, simgrid::surf::Action::State previous)`
158 static simgrid::xbt::signal<void(simgrid::surf::CpuAction*, simgrid::surf::Action::State)> onStateChange;
159 /** @brief Signal emitted when the action share changes (amount of flops it gets)
160 * Signature: `void(CpuAction *action)`
162 static simgrid::xbt::signal<void(simgrid::surf::CpuAction*)> onShareChange;
164 CpuAction(simgrid::surf::Model *model, double cost, bool failed)
165 : Action(model, cost, failed) {}
166 CpuAction(simgrid::surf::Model *model, double cost, bool failed, lmm_variable_t var)
167 : Action(model, cost, failed, var) {}
169 void setState(simgrid::surf::Action::State state) override;
171 void updateRemainingLazy(double now) override;
172 std::list<Cpu*> cpus();
178 #endif /* SURF_CPU_INTERFACE_HPP_ */