1 /* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010. 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. */
11 #include "xbt/dynar.h"
14 #include "xbt/file_stat.h"
16 #include "xbt/config.h"
17 #include "surf/datatypes.h"
19 #include "surf/surf_routing.h"
20 #include "simgrid/platf_interface.h"
23 /* Actions and models are highly connected structures... */
32 SURF_NETWORK_ELEMENT_NULL = 0, /* NULL */
33 SURF_NETWORK_ELEMENT_HOST, /* host type */
34 SURF_NETWORK_ELEMENT_ROUTER, /* router type */
35 SURF_NETWORK_ELEMENT_AS /* AS type */
36 } e_surf_network_element_type_t;
38 XBT_PUBLIC(e_surf_network_element_type_t)
39 routing_get_network_element_type(const char* name);
41 /** @Brief Specify that we use that action */
42 XBT_PUBLIC(void) surf_action_ref(surf_action_t action);
43 /** @brief Creates a new action.
45 * @param size The size is the one of the subtype you want to create
46 * @param cost initial value
47 * @param model to which model we should attach this action
48 * @param failed whether we should start this action in failed mode
50 XBT_PUBLIC(void *) surf_action_new(size_t size, double cost,
51 surf_model_t model, int failed);
53 /** \brief Resource model description
55 typedef struct surf_model_description {
57 const char *description;
58 void_f_void_t model_init_preparse;
59 } s_surf_model_description_t, *surf_model_description_t;
61 XBT_PUBLIC(int) find_model_description(s_surf_model_description_t * table,
63 XBT_PUBLIC(void) model_help(const char *category,
64 s_surf_model_description_t * table);
66 enum heap_action_type{
73 /** \ingroup SURF_actions
74 * \brief Action structure
76 * Never create s_surf_action_t by yourself ! The actions are created
77 * on the fly when you call execute or communicate on a model.
79 * \see e_surf_action_state_t
81 typedef struct surf_action {
82 s_xbt_swag_hookup_t state_hookup;
84 double cost; /**< cost */
85 double priority; /**< priority (1.0 by default) */
86 double max_duration; /**< max_duration (may fluctuate until
87 the task is completed) */
88 double remains; /**< How much of that cost remains to
89 * be done in the currently running task */
90 #ifdef HAVE_LATENCY_BOUND_TRACKING
91 int latency_limited; /**< Set to 1 if is limited by latency, 0 otherwise */
94 double start; /**< start time */
95 double finish; /**< finish time : this is modified during the run
96 * and fluctuates until the task is completed */
97 void *data; /**< for your convenience */
99 surf_model_t model_type;
101 char *category; /**< tracing category for categorized resource utilization monitoring */
103 surf_file_t file; /**< surf_file_t for storage model */
104 s_file_stat_t stat; /**< surf_file_t for storage model */
107 typedef struct surf_action_lmm {
108 s_surf_action_t generic_action;
109 lmm_variable_t variable;
111 s_xbt_swag_hookup_t action_list_hookup;
115 enum heap_action_type hat;
116 } s_surf_action_lmm_t, *surf_action_lmm_t;
118 /** \ingroup SURF_actions
119 * \brief Action states
123 * \see surf_action_t, surf_action_state_t
126 SURF_ACTION_READY = 0, /**< Ready */
127 SURF_ACTION_RUNNING, /**< Running */
128 SURF_ACTION_FAILED, /**< Task Failure */
129 SURF_ACTION_DONE, /**< Completed */
130 SURF_ACTION_TO_FREE, /**< Action to free in next cleanup */
131 SURF_ACTION_NOT_IN_THE_SYSTEM
132 /**< Not in the system anymore. Why did you ask ? */
133 } e_surf_action_state_t;
135 /** \ingroup SURF_actions
136 * \brief Action state sets
138 * This structure contains some sets of actions.
139 * It provides a fast access to the actions in each state.
141 * \see surf_action_t, e_surf_action_state_t
143 typedef struct surf_action_state {
144 xbt_swag_t ready_action_set;
145 /**< Actions in state SURF_ACTION_READY */
146 xbt_swag_t running_action_set;
147 /**< Actions in state SURF_ACTION_RUNNING */
148 xbt_swag_t failed_action_set;
149 /**< Actions in state SURF_ACTION_FAILED */
150 xbt_swag_t done_action_set;
151 /**< Actions in state SURF_ACTION_DONE */
152 } s_surf_action_state_t, *surf_action_state_t;
154 /***************************/
155 /* Generic model object */
156 /***************************/
157 typedef struct s_routing_platf s_routing_platf_t, *routing_platf_t;
158 XBT_PUBLIC_DATA(routing_platf_t) routing_platf;
161 /** \ingroup SURF_models
162 * \brief Private data available on all models
164 typedef struct surf_model_private *surf_model_private_t;
168 /** \ingroup SURF_models
169 * \brief CPU model extension public
171 * Public functions specific to the CPU model.
173 typedef struct surf_cpu_model_extension_public {
174 surf_action_t(*execute) (void *cpu, double size);
175 surf_action_t(*sleep) (void *cpu, double duration);
176 e_surf_resource_state_t(*get_state) (void *cpu);
177 double (*get_speed) (void *cpu, double load);
178 double (*get_available_speed) (void *cpu);
179 void* (*create_resource) (const char *name, double power_peak,
181 tmgr_trace_t power_trace,
183 e_surf_resource_state_t state_initial,
184 tmgr_trace_t state_trace,
185 xbt_dict_t cpu_properties);
186 void (*add_traces) (void);
187 } s_surf_model_extension_cpu_t;
191 /** \ingroup SURF_models
192 * \brief Network model extension public
194 * Public functions specific to the network model
196 typedef struct surf_network_model_extension_public {
197 surf_action_t (*communicate) (sg_routing_edge_t src,
198 sg_routing_edge_t dst,
199 double size, double rate);
200 xbt_dynar_t(*get_route) (void *src, void *dst); //FIXME: kill field? That is done by the routing nowadays
201 double (*get_link_bandwidth) (const void *link);
202 double (*get_link_latency) (const void *link);
203 int (*link_shared) (const void *link);
204 void (*add_traces) (void);
205 void* (*create_resource) (const char *name,
207 tmgr_trace_t bw_trace,
209 tmgr_trace_t lat_trace,
210 e_surf_resource_state_t
212 tmgr_trace_t state_trace,
213 e_surf_link_sharing_policy_t policy,
214 xbt_dict_t properties);
215 } s_surf_model_extension_network_t;
219 /** \ingroup SURF_models
220 * \brief Storage model extension public
222 * Public functions specific to the Storage model.
225 typedef struct surf_storage_model_extension_public {
226 surf_action_t(*open) (void *storage, const char* path, const char* mode);
227 surf_action_t(*close) (void *storage, surf_file_t fp);
228 surf_action_t(*read) (void *storage, void* ptr, size_t size, size_t nmemb, surf_file_t stream);
229 surf_action_t(*write) (void *storage, const void* ptr, size_t size, size_t nmemb, surf_file_t stream);
230 surf_action_t(*stat) (void *storage, surf_file_t stream);
231 void* (*create_resource) (const char* id, const char* model,const char* type_id);
232 } s_surf_model_extension_storage_t;
234 /** \ingroup SURF_models
235 * \brief Workstation model extension public
237 * Public functions specific to the workstation model.
239 typedef struct surf_workstation_model_extension_public {
240 surf_action_t(*execute) (void *workstation, double size); /**< Execute a computation amount on a workstation
241 and create the corresponding action */
242 surf_action_t(*sleep) (void *workstation, double duration); /**< Make a workstation sleep during a given duration */
243 e_surf_resource_state_t(*get_state) (void *workstation); /**< Return the CPU state of a workstation */
244 double (*get_speed) (void *workstation, double load); /**< Return the speed of a workstation */
245 double (*get_available_speed) (void *workstation); /**< Return tha available speed of a workstation */
246 surf_action_t(*communicate) (void *workstation_src, /**< Execute a communication amount between two workstations */
247 void *workstation_dst, double size,
249 // FIXME: kill next field, which duplicates the routing
250 xbt_dynar_t(*get_route) (void *workstation_src, void *workstation_dst); /**< Get the list of links between two ws */
252 surf_action_t(*execute_parallel_task) (int workstation_nb, /**< Execute a parallel task on several workstations */
253 void **workstation_list,
254 double *computation_amount,
255 double *communication_amount,
256 double amount, double rate);
257 double (*get_link_bandwidth) (const void *link); /**< Return the current bandwidth of a network link */
258 double (*get_link_latency) (const void *link); /**< Return the current latency of a network link */
259 surf_action_t(*open) (void *workstation, const char* storage, const char* path, const char* mode);
260 surf_action_t(*close) (void *workstation, const char* storage, surf_file_t fp);
261 surf_action_t(*read) (void *workstation, const char* storage, void* ptr, size_t size, size_t nmemb, surf_file_t stream);
262 surf_action_t(*write) (void *workstation, const char* storage, const void* ptr, size_t size, size_t nmemb, surf_file_t stream);
263 surf_action_t(*stat) (void *workstation, const char* storage, surf_file_t stream);
264 int (*link_shared) (const void *link);
265 xbt_dict_t(*get_properties) (const void *resource);
266 void* (*link_create_resource) (const char *name,
268 tmgr_trace_t bw_trace,
270 tmgr_trace_t lat_trace,
271 e_surf_resource_state_t
273 tmgr_trace_t state_trace,
274 e_surf_link_sharing_policy_t
275 policy, xbt_dict_t properties);
276 void* (*cpu_create_resource) (const char *name, double power_peak,
278 tmgr_trace_t power_trace,
279 e_surf_resource_state_t state_initial,
280 tmgr_trace_t state_trace,
281 xbt_dict_t cpu_properties);
282 void (*add_traces) (void);
284 } s_surf_model_extension_workstation_t;
289 /** \ingroup SURF_models
290 * \brief Model datatype
292 * Generic data structure for a model. The workstations,
293 * the CPUs and the network links are examples of models.
295 typedef struct surf_model {
296 const char *name; /**< Name of this model */
297 s_surf_action_state_t states; /**< Any living action on this model */
299 e_surf_action_state_t(*action_state_get) (surf_action_t action);
300 /**< Return the state of an action */
301 void (*action_state_set) (surf_action_t action,
302 e_surf_action_state_t state);
303 /**< Change an action state*/
305 double (*action_get_start_time) (surf_action_t action); /**< Return the start time of an action */
306 double (*action_get_finish_time) (surf_action_t action); /**< Return the finish time of an action */
307 int (*action_unref) (surf_action_t action); /**< Specify that we don't use that action anymore */
308 void (*action_cancel) (surf_action_t action); /**< Cancel a running action */
309 void (*action_recycle) (surf_action_t action); /**< Recycle an action */
310 void (*action_data_set) (surf_action_t action, void *data); /**< Set the user data of an action */
311 void (*suspend) (surf_action_t action); /**< Suspend an action */
312 void (*resume) (surf_action_t action); /**< Resume a suspended action */
313 int (*is_suspended) (surf_action_t action); /**< Return whether an action is suspended */
314 void (*set_max_duration) (surf_action_t action, double duration); /**< Set the max duration of an action*/
315 void (*set_priority) (surf_action_t action, double priority); /**< Set the priority of an action */
317 void (*set_category) (surf_action_t action, const char *category); /**< Set the category of an action */
319 double (*get_remains) (surf_action_t action); /**< Get the remains of an action */
320 #ifdef HAVE_LATENCY_BOUND_TRACKING
321 int (*get_latency_limited) (surf_action_t action); /**< Return 1 if action is limited by latency, 0 otherwise */
324 surf_model_private_t model_private;
327 lmm_system_t maxmin_system;
328 e_UM_t update_mechanism;
329 xbt_swag_t modified_set;
330 xbt_heap_t action_heap;
331 int selective_update;
334 s_surf_model_extension_cpu_t cpu;
335 s_surf_model_extension_network_t network;
336 s_surf_model_extension_storage_t storage;
337 s_surf_model_extension_workstation_t workstation;
341 surf_model_t surf_model_init(void);
342 void surf_model_exit(surf_model_t model);
344 static inline void *surf_cpu_resource_by_name(const char *name) {
345 return xbt_lib_get_or_null(host_lib, name, SURF_CPU_LEVEL);
347 static inline void *surf_workstation_resource_by_name(const char *name){
348 return xbt_lib_get_or_null(host_lib, name, SURF_WKS_LEVEL);
350 static inline void *surf_storage_resource_by_name(const char *name){
351 return xbt_lib_get_or_null(storage_lib, name, SURF_STORAGE_LEVEL);
354 typedef struct surf_resource {
357 xbt_dict_t properties;
358 } s_surf_resource_t, *surf_resource_t;
361 * Resource which have a metric handled by a maxmin system
366 tmgr_trace_event_t event;
369 typedef struct surf_resource_lmm {
370 s_surf_resource_t generic_resource;
371 lmm_constraint_t constraint;
372 e_surf_resource_state_t state_current;
373 tmgr_trace_event_t state_event;
374 s_surf_metric_t power;
375 } s_surf_resource_lmm_t, *surf_resource_lmm_t;
377 /**************************************/
378 /* Implementations of model object */
379 /**************************************/
382 /** \ingroup SURF_models
383 * \brief The CPU model
385 XBT_PUBLIC_DATA(surf_model_t) surf_cpu_model;
387 /** \ingroup SURF_models
388 * \brief Initializes the CPU model with the model Cas01
390 * By default, this model uses the lazy optimization mechanism that
391 * relies on partial invalidation in LMM and a heap for lazy action update.
392 * You can change this behavior by setting the cpu/optim configuration
393 * variable to a different value.
395 * This function is called by surf_workstation_model_init_CLM03
396 * so you shouldn't have to call it by yourself.
398 * \see surf_workstation_model_init_CLM03()
400 XBT_PUBLIC(void) surf_cpu_model_init_Cas01(void);
402 /** \ingroup SURF_models
403 * \brief Initializes the CPU model with trace integration [Deprecated]
405 * You shouldn't have to call it by yourself.
406 * \see surf_workstation_model_init_CLM03()
408 XBT_PUBLIC(void) surf_cpu_model_init_ti(void);
410 /** \brief This function call the share resources function needed
413 XBT_PUBLIC(double) generic_share_resources(double now);
415 /** \brief This function call the update action state function needed
418 XBT_PUBLIC(void) generic_update_actions_state(double now, double delta);
420 /** \ingroup SURF_models
421 * \brief The list of all available optimization modes (both for cpu and networks).
422 * These optimization modes can be set using --cfg=cpu/optim:... and --cfg=network/optim:...
424 XBT_PUBLIC_DATA(s_surf_model_description_t) surf_optimization_mode_description[];
426 /** \ingroup SURF_models
427 * \brief The list of all available cpu model models
429 XBT_PUBLIC_DATA(s_surf_model_description_t) surf_cpu_model_description[];
431 XBT_PUBLIC(void) create_workstations(void);
433 /**\brief create new host bypass the parser
438 /** \ingroup SURF_models
439 * \brief The network model
441 * When creating a new API on top on SURF, you shouldn't use the
442 * network model unless you know what you are doing. Only the workstation
443 * model should be accessed because depending on the platform model,
444 * the network model can be NULL.
446 XBT_PUBLIC_DATA(surf_model_t) surf_network_model;
448 /** \ingroup SURF_models
449 * \brief Same as network model 'LagrangeVelho', only with different correction factors.
451 * This model is proposed by Pierre-Nicolas Clauss and Martin Quinson and Stéphane Génaud
452 * based on the model 'LV08' and different correction factors depending on the communication
453 * size (< 1KiB, < 64KiB, >= 64KiB).
454 * See comments in the code for more information.
456 * \see surf_workstation_model_init_SMPI()
458 XBT_PUBLIC(void) surf_network_model_init_SMPI(void);
460 /** \ingroup SURF_models
461 * \brief Initializes the platform with the network model 'LegrandVelho'
463 * This model is proposed by Arnaud Legrand and Pedro Velho based on
464 * the results obtained with the GTNets simulator for onelink and
465 * dogbone sharing scenarios. See comments in the code for more information.
467 * \see surf_workstation_model_init_LegrandVelho()
469 XBT_PUBLIC(void) surf_network_model_init_LegrandVelho(void);
471 /** \ingroup SURF_models
472 * \brief Initializes the platform with the network model 'Constant'
474 * In this model, the communication time between two network cards is
475 * constant, hence no need for a routing table. This is particularly
476 * usefull when simulating huge distributed algorithms where
477 * scalability is really an issue. This function is called in
478 * conjunction with surf_workstation_model_init_compound.
480 * \see surf_workstation_model_init_compound()
482 XBT_PUBLIC(void) surf_network_model_init_Constant(void);
484 /** \ingroup SURF_models
485 * \brief Initializes the platform with the network model CM02
487 * This function is called by surf_workstation_model_init_CLM03
488 * or by yourself only if you plan using surf_workstation_model_init_compound
489 * See comments in the code for more information.
491 * \see surf_workstation_model_init_CLM03()
493 XBT_PUBLIC(void) surf_network_model_init_CM02(void);
496 * brief initialize the the network model bypassing the XML parser
498 XBT_PUBLIC(void) surf_network_model_init_bypass(const char *id,
503 /** \ingroup SURF_models
504 * \brief Initializes the platform with the network model GTNETS
505 * \param filename XML platform file name
507 * This function is called by surf_workstation_model_init_GTNETS
508 * or by yourself only if you plan using surf_workstation_model_init_compound
510 * \see surf_workstation_model_init_GTNETS()
512 XBT_PUBLIC(void) surf_network_model_init_GTNETS(void);
516 /** \ingroup SURF_models
517 * \brief Initializes the platform with the network model NS3
518 * \param filename XML platform file name
520 * This function is called by surf_workstation_model_init_NS3
521 * or by yourself only if you plan using surf_workstation_model_init_compound
523 * \see surf_workstation_model_init_NS3()
525 XBT_PUBLIC(void) surf_network_model_init_NS3(void);
528 /** \ingroup SURF_models
529 * \brief Initializes the platform with the network model Reno
530 * \param filename XML platform file name
532 * The problem is related to max( sum( arctan(C * Df * xi) ) ).
535 * [LOW03] S. H. Low. A duality model of TCP and queue management algorithms.
536 * IEEE/ACM Transaction on Networking, 11(4):525-536, 2003.
538 * Call this function only if you plan using surf_workstation_model_init_compound.
541 XBT_PUBLIC(void) surf_network_model_init_Reno(void);
543 /** \ingroup SURF_models
544 * \brief Initializes the platform with the network model Reno2
545 * \param filename XML platform file name
547 * The problem is related to max( sum( arctan(C * Df * xi) ) ).
550 * [LOW01] S. H. Low. A duality model of TCP and queue management algorithms.
551 * IEEE/ACM Transaction on Networking, 11(4):525-536, 2003.
553 * Call this function only if you plan using surf_workstation_model_init_compound.
556 XBT_PUBLIC(void) surf_network_model_init_Reno2(void);
558 /** \ingroup SURF_models
559 * \brief Initializes the platform with the network model Vegas
560 * \param filename XML platform file name
562 * This problem is related to max( sum( a * Df * ln(xi) ) ) which is equivalent
563 * to the proportional fairness.
566 * [LOW03] S. H. Low. A duality model of TCP and queue management algorithms.
567 * IEEE/ACM Transaction on Networking, 11(4):525-536, 2003.
569 * Call this function only if you plan using surf_workstation_model_init_compound.
572 XBT_PUBLIC(void) surf_network_model_init_Vegas(void);
574 /** \ingroup SURF_models
575 * \brief The list of all available network model models
577 XBT_PUBLIC_DATA(s_surf_model_description_t)
578 surf_network_model_description[];
585 /** \ingroup SURF_models
586 * \brief The storage model
588 XBT_PUBLIC(void) surf_storage_model_init_default(void);
590 /** \ingroup SURF_models
591 * \brief The list of all available storage modes.
592 * This storage mode can be set using --cfg=storage/model:...
594 XBT_PUBLIC_DATA(s_surf_model_description_t) surf_storage_model_description[];
602 /** \ingroup SURF_models
603 * \brief The workstation model
605 * Note that when you create an API on top of SURF,
606 * the workstation model should be the only one you use
607 * because depending on the platform model, the network model and the CPU model
610 XBT_PUBLIC_DATA(surf_model_t) surf_workstation_model;
612 /** \ingroup SURF_models
613 * \brief Initializes the platform with a compound workstation model
615 * This function should be called after a cpu_model and a
616 * network_model have been set up.
619 XBT_PUBLIC(void) surf_workstation_model_init_compound(void);
621 /** \ingroup SURF_models
622 * \brief Initializes the platform with the current best network and cpu models at hand
624 * This platform model seperates the workstation model and the network model.
625 * The workstation model will be initialized with the model compound, the network
626 * model with the model LV08 (with cross traffic support) and the CPU model with
628 * Such model is subject to modification with warning in the ChangeLog so monitor it!
631 XBT_PUBLIC(void) surf_workstation_model_init_current_default(void);
633 /** \ingroup SURF_models
634 * \brief Initializes the platform with the workstation model CLM03
636 * This platform model seperates the workstation model and the network model.
637 * The workstation model will be initialized with the model CLM03, the network
638 * model with the model CM02 and the CPU model with the model Cas01.
639 * In future releases, some other network models will be implemented and will be
640 * combined with the workstation model CLM03.
643 XBT_PUBLIC(void) surf_workstation_model_init_CLM03(void);
645 /** \ingroup SURF_models
646 * \brief Initializes the platform with the model KCCFLN05
648 * With this model, only parallel tasks can be used. Resource sharing
649 * is done by identifying bottlenecks and giving an equal share of
650 * the model to each action.
653 XBT_PUBLIC(void) surf_workstation_model_init_ptask_L07(void);
655 /** \ingroup SURF_models
656 * \brief The list of all available workstation model models
658 XBT_PUBLIC_DATA(s_surf_model_description_t)
659 surf_workstation_model_description[];
661 /** \ingroup SURF_models
662 * \brief List of initialized models
664 XBT_PUBLIC_DATA(xbt_dynar_t) model_list;
666 /*******************************************/
667 /*** SURF Globals **************************/
668 /*******************************************/
669 XBT_PUBLIC_DATA(xbt_cfg_t) _surf_cfg_set;
671 /** \ingroup SURF_simulation
672 * \brief Initialize SURF
673 * \param argc argument number
674 * \param argv arguments
676 * This function has to be called to initialize the common
677 * structures. Then you will have to create the environment by
679 * e.g. surf_workstation_model_init_CLM03()
681 * \see surf_workstation_model_init_CLM03(), surf_workstation_model_init_compound(), surf_exit()
683 XBT_PUBLIC(void) surf_init(int *argc, char **argv); /* initialize common structures */
685 /** \ingroup SURF_simulation
686 * \brief Finish simulation initialization
688 * This function must be called before the first call to surf_solve()
690 XBT_PUBLIC(void) surf_presolve(void);
692 /** \ingroup SURF_simulation
693 * \brief Performs a part of the simulation
694 * \param max_date Maximum date to update the simulation to, or -1
695 * \return the elapsed time, or -1.0 if no event could be executed
697 * This function execute all possible events, update the action states
698 * and returns the time elapsed.
699 * When you call execute or communicate on a model, the corresponding actions
700 * are not executed immediately but only when you call surf_solve.
701 * Note that the returned elapsed time can be zero.
703 XBT_PUBLIC(double) surf_solve(double max_date);
705 /** \ingroup SURF_simulation
706 * \brief Return the current time
708 * Return the current time in millisecond.
710 XBT_PUBLIC(double) surf_get_clock(void);
712 /** \ingroup SURF_simulation
719 XBT_PUBLIC(void) surf_exit(void);
721 /* Prototypes of the functions that handle the properties */
722 XBT_PUBLIC_DATA(xbt_dict_t) current_property_set; /* the prop set for the currently parsed element (also used in SIMIX) */
723 XBT_PUBLIC(void) parse_properties(void);
725 /* surf parse file related (public because called from a test suite) */
726 XBT_PUBLIC(void) parse_platform_file(const char *file);
728 /* Stores the sets */
729 XBT_PUBLIC_DATA(xbt_dict_t) set_list;
731 /* For the trace and trace:connect tag (store their content till the end of the parsing) */
732 XBT_PUBLIC_DATA(xbt_dict_t) traces_set_list;
733 XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_host_avail;
734 XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_power;
735 XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_link_avail;
736 XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_bandwidth;
737 XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_latency;
740 XBT_PUBLIC(double) get_cpu_power(const char *power);
742 int surf_get_nthreads(void);
743 void surf_set_nthreads(int nthreads);
746 #endif /* _SURF_SURF_H */