X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/78e23acf6ae6724c4e962946c047eaa7beecc031..c78100114ee98cae862783d942238de2011ac251:/src/surf/cpu_interface.hpp diff --git a/src/surf/cpu_interface.hpp b/src/surf/cpu_interface.hpp deleted file mode 100644 index 814966237b..0000000000 --- a/src/surf/cpu_interface.hpp +++ /dev/null @@ -1,197 +0,0 @@ -/* 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. */ - -#ifndef SURF_CPU_INTERFACE_HPP_ -#define SURF_CPU_INTERFACE_HPP_ - -#include "simgrid/kernel/resource/Model.hpp" -#include "simgrid/s4u/Host.hpp" -#include "src/kernel/lmm/maxmin.hpp" -#include "src/kernel/resource/Resource.hpp" - -#include - -/*********** - * Classes * - ***********/ - -namespace simgrid { -namespace kernel { -namespace resource { - -class CpuAction; - -/********* - * Model * - *********/ -class XBT_PUBLIC CpuModel : public Model { -public: - using Model::Model; - - /** - * @brief Create a Cpu - * - * @param host The host that will have this CPU - * @param speed_per_pstate Processor speed (in Flops) of each pstate. - * This ignores any potential external load coming from a trace. - * @param core The number of core of this Cpu - */ - virtual CpuImpl* create_cpu(s4u::Host* host, const std::vector& speed_per_pstate) = 0; - - void update_actions_state_lazy(double now, double delta) override; - void update_actions_state_full(double now, double delta) override; -}; - -/************ - * Resource * - ************/ - -class XBT_PUBLIC CpuImpl : public Resource_T { - friend VirtualMachineImpl; // Resets the VCPU - - s4u::Host* piface_; - int core_count_ = 1; - unsigned long pstate_ = 0; /*< Current pstate (index in the speed_per_pstate_)*/ - std::vector speed_per_pstate_; /*< List of supported CPU capacities (pstate related). Not 'const' because VCPU - get modified on migration */ - s4u::Host::SharingPolicy sharing_policy_ = s4u::Host::SharingPolicy::LINEAR; - s4u::NonLinearResourceCb sharing_policy_cb_; - - void apply_sharing_policy_cfg() const; - -public: - /** - * @brief Cpu constructor - * - * @param host The host in which this Cpu should be plugged - * @param speed_per_pstate Processor speed (in flop per second) for each pstate - */ - CpuImpl(s4u::Host* host, const std::vector& speed_per_pstate); - - CpuImpl(const CpuImpl&) = delete; - CpuImpl& operator=(const CpuImpl&) = delete; - - /** @brief Public interface */ - s4u::Host* get_iface() const { return piface_; } - - CpuImpl* set_core_count(int core_count); - virtual int get_core_count() const { return core_count_; } - - void seal() override; - - /** @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 { return load * speed_.peak; } - - /** @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(unsigned long pstate_index) const; - - virtual unsigned long get_pstate_count() const { return speed_per_pstate_.size(); } - - virtual unsigned long get_pstate() const { return pstate_; } - virtual CpuImpl* set_pstate(unsigned long pstate_index); - - /*< @brief Setup the profile file with availability events (peak speed changes due to external load). - * Profile must contain relative values (ratio between 0 and 1) - */ - virtual CpuImpl* set_speed_profile(profile::Profile* profile); - - /** - * @brief Set the CPU's speed - * - * @param speed_per_state list of powers for this processor (default power is at index 0) - */ - CpuImpl* set_pstate_speed(const std::vector& speed_per_state); - - void set_sharing_policy(s4u::Host::SharingPolicy policy, const s4u::NonLinearResourceCb& cb); - s4u::Host::SharingPolicy get_sharing_policy() const { return sharing_policy_; } - - /** - * @brief Sets factor callback - * Implemented only for cas01 - */ - virtual void set_factor_cb(const std::function& cb) { THROW_UNIMPLEMENTED; } - - /** - * @brief Execute some quantity of computation - * - * @param size The value of the processing amount (in flop) needed to process - * @param user_bound User's bound for execution speed - * @return The CpuAction corresponding to the processing - */ - virtual CpuAction* execution_start(double size, double user_bound) = 0; - - /** - * @brief Execute some quantity of computation on more than one core - * - * @param size The value of the processing amount (in flop) needed to process - * @param requested_cores The desired amount of cores. Must be >= 1 - * @param user_bound User's bound for execution speed - * @return The CpuAction corresponding to the processing - */ - virtual CpuAction* execution_start(double size, int requested_cores, double user_bound) = 0; - - /** - * @brief Make a process sleep for duration (in seconds) - * - * @param duration The number of seconds to sleep - * @return The CpuAction corresponding to the sleeping - */ - virtual CpuAction* sleep(double duration) = 0; - -protected: - /** @brief Take speed changes (either load or max) into account */ - virtual void on_speed_change(); - - /** Reset most characteristics of this CPU to the one of that CPU. - * - * Used to reset a VCPU when its VM migrates to another host, so it only resets the fields that should be in this - *case. - **/ - virtual void reset_vcpu(CpuImpl* that); - - Metric speed_ = {1.0, 0, nullptr}; -}; - -/********** - * Action * - **********/ - - /** @ingroup SURF_cpu_interface - * @brief A CpuAction represents the execution of code on one or several Cpus - */ -class XBT_PUBLIC CpuAction : public Action { -public: - /** @brief Signal emitted when the action state changes (ready/running/done, etc) - * Signature: `void(CpuAction const& action, simgrid::kernel::resource::Action::State previous)` - */ - static xbt::signal on_state_change; - - using Action::Action; - - void set_state(Action::State state) override; - - void update_remains_lazy(double now) override; - std::list cpus() const; - - void suspend() override; - void resume() override; -}; -} // namespace resource -} // namespace kernel -} // namespace simgrid - -#endif /* SURF_CPU_INTERFACE_HPP_ */