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"
15 #include "xbt/config.h"
16 #include "surf/datatypes.h"
18 #include "surf/surf_routing.h"
19 #include "simgrid/platf_interface.h"
22 /* Actions and models are highly connected structures... */
25 SURF_NETWORK_ELEMENT_NULL = 0, /* NULL */
26 SURF_NETWORK_ELEMENT_HOST, /* host type */
27 SURF_NETWORK_ELEMENT_ROUTER, /* router type */
28 SURF_NETWORK_ELEMENT_AS, /* AS type */
29 } e_surf_network_element_type_t;
31 XBT_PUBLIC(e_surf_network_element_type_t)
32 routing_get_network_element_type(const char *name);
34 /** @Brief Specify that we use that action */
35 XBT_PUBLIC(void) surf_action_ref(surf_action_t action);
36 /** @brief Creates a new action.
38 * @param size The size is the one of the subtype you want to create
39 * @param cost initial value
40 * @param model to which model we should attach this action
41 * @param failed whether we should start this action in failed mode
43 XBT_PUBLIC(void *) surf_action_new(size_t size, double cost,
44 surf_model_t model, int failed);
46 /** \brief Resource model description
48 typedef struct surf_model_description {
50 const char *description;
51 void_f_void_t model_init_preparse;
52 } s_surf_model_description_t, *surf_model_description_t;
54 XBT_PUBLIC(int) find_model_description(s_surf_model_description_t * table,
56 XBT_PUBLIC(void) model_help(const char *category,
57 s_surf_model_description_t * table);
59 /** \brief Action structure
60 * \ingroup SURF_actions
62 * Never create s_surf_action_t by yourself ! The actions are created
63 * on the fly when you call execute or communicate on a model.
65 * \see e_surf_action_state_t
67 typedef struct surf_action {
68 s_xbt_swag_hookup_t state_hookup;
70 double cost; /**< cost */
71 double priority; /**< priority (1.0 by default) */
72 double max_duration; /**< max_duration (may fluctuate until
73 the task is completed) */
74 double remains; /**< How much of that cost remains to
75 * be done in the currently running task */
76 #ifdef HAVE_LATENCY_BOUND_TRACKING
77 int latency_limited; /**< Set to 1 if is limited by latency, 0 otherwise */
80 double start; /**< start time */
81 double finish; /**< finish time : this is modified during the run
82 * and fluctuates until the task is completed */
83 void *data; /**< for your convenience */
85 surf_model_t model_type;
87 char *category; /**< tracing category for categorized resource utilization monitoring */
91 typedef struct surf_action_lmm {
92 s_surf_action_t generic_action;
93 lmm_variable_t variable;
95 } s_surf_action_lmm_t, *surf_action_lmm_t;
97 /** \brief Action states
98 * \ingroup SURF_actions
102 * \see surf_action_t, surf_action_state_t
105 SURF_ACTION_READY = 0, /**< Ready */
106 SURF_ACTION_RUNNING, /**< Running */
107 SURF_ACTION_FAILED, /**< Task Failure */
108 SURF_ACTION_DONE, /**< Completed */
109 SURF_ACTION_TO_FREE, /**< Action to free in next cleanup */
110 SURF_ACTION_NOT_IN_THE_SYSTEM
111 /**< Not in the system anymore. Why did you ask ? */
112 } e_surf_action_state_t;
114 /** \brief Action state sets
115 * \ingroup SURF_actions
117 * This structure contains some sets of actions.
118 * It provides a fast access to the actions in each state.
120 * \see surf_action_t, e_surf_action_state_t
122 typedef struct surf_action_state {
123 xbt_swag_t ready_action_set;
124 /**< Actions in state SURF_ACTION_READY */
125 xbt_swag_t running_action_set;
126 /**< Actions in state SURF_ACTION_RUNNING */
127 xbt_swag_t failed_action_set;
128 /**< Actions in state SURF_ACTION_FAILED */
129 xbt_swag_t done_action_set;
130 /**< Actions in state SURF_ACTION_DONE */
131 } s_surf_action_state_t, *surf_action_state_t;
133 /***************************/
134 /* Generic model object */
135 /***************************/
136 typedef struct s_routing_global s_routing_global_t, *routing_global_t;
137 XBT_PUBLIC_DATA(routing_global_t) global_routing;
140 /** \brief Private data available on all models
141 * \ingroup SURF_models
143 typedef struct surf_model_private *surf_model_private_t;
147 /** \brief CPU model extension public
148 * \ingroup SURF_models
150 * Public functions specific to the CPU model.
152 typedef struct surf_cpu_model_extension_public {
153 surf_action_t(*execute) (void *cpu, double size);
154 surf_action_t(*sleep) (void *cpu, double duration);
155 e_surf_resource_state_t(*get_state) (void *cpu);
156 double (*get_speed) (void *cpu, double load);
157 double (*get_available_speed) (void *cpu);
158 void* (*create_resource) (const char *name, double power_peak,
160 tmgr_trace_t power_trace,
162 e_surf_resource_state_t state_initial,
163 tmgr_trace_t state_trace,
164 xbt_dict_t cpu_properties);
165 void (*add_traces) (void);
166 } s_surf_model_extension_cpu_t;
170 /** \brief Network model extension public
171 * \ingroup SURF_models
173 * Public functions specific to the network model
175 typedef struct surf_network_model_extension_public {
176 surf_action_t(*communicate) (const char *src_name,
177 const char *dst_name,
178 double size, double rate);
179 xbt_dynar_t(*get_route) (const char *src_name, const char *dst_name); //FIXME: kill field? That is done by the routing nowadays
180 double (*get_link_bandwidth) (const void *link);
181 double (*get_link_latency) (const void *link);
182 int (*link_shared) (const void *link);
183 void (*add_traces) (void);
184 void* (*create_resource) (const char *name,
186 tmgr_trace_t bw_trace,
188 tmgr_trace_t lat_trace,
189 e_surf_resource_state_t
191 tmgr_trace_t state_trace,
192 e_surf_link_sharing_policy_t policy,
193 xbt_dict_t properties);
194 } s_surf_model_extension_network_t;
196 typedef struct s_surf_file {
197 char *name; /**< @brief host name if any */
198 void *data; /**< @brief user data */
200 typedef struct s_surf_file *surf_file_t;
204 /** \brief Storage model extension public
205 * \ingroup SURF_models
207 * Public functions specific to the Storage model.
209 typedef struct surf_storage_model_extension_public {
210 surf_action_t(*open) (void *workstation, const char* path, const char* mode);
211 surf_action_t(*close) (void *workstation, surf_file_t fp);
212 surf_action_t(*read) (void *workstation, void* ptr, size_t size, size_t nmemb, surf_file_t stream);
213 surf_action_t(*write) (void *workstation, const void* ptr, size_t size, size_t nmemb, surf_file_t stream);
214 surf_action_t(*stat) (void *workstation, int fd, void* buf);
215 void* (*create_resource) (const char *name);
216 } s_surf_model_extension_storage_t;
218 /** \brief Workstation model extension public
219 * \ingroup SURF_models
221 * Public functions specific to the workstation model.
223 typedef struct surf_workstation_model_extension_public {
224 surf_action_t(*execute) (void *workstation, double size); /**< Execute a computation amount on a workstation
225 and create the corresponding action */
226 surf_action_t(*sleep) (void *workstation, double duration); /**< Make a workstation sleep during a given duration */
227 e_surf_resource_state_t(*get_state) (void *workstation); /**< Return the CPU state of a workstation */
228 double (*get_speed) (void *workstation, double load); /**< Return the speed of a workstation */
229 double (*get_available_speed) (void *workstation); /**< Return tha available speed of a workstation */
230 surf_action_t(*communicate) (void *workstation_src, /**< Execute a communication amount between two workstations */
231 void *workstation_dst, double size,
233 // FIXME: kill next field, which duplicates the routing
234 xbt_dynar_t(*get_route) (void *workstation_src, void *workstation_dst); /**< Get the list of links between two ws */
236 surf_action_t(*execute_parallel_task) (int workstation_nb, /**< Execute a parallel task on several workstations */
237 void **workstation_list,
238 double *computation_amount,
239 double *communication_amount,
240 double amount, double rate);
241 double (*get_link_bandwidth) (const void *link); /**< Return the current bandwidth of a network link */
242 double (*get_link_latency) (const void *link); /**< Return the current latency of a network link */
243 surf_action_t(*open) (void *workstation, const char* path, const char* mode);
244 surf_action_t(*close) (void *workstation, surf_file_t fp);
245 surf_action_t(*read) (void *workstation, void* ptr, size_t size, size_t nmemb, surf_file_t stream);
246 surf_action_t(*write) (void *workstation, const void* ptr, size_t size, size_t nmemb, surf_file_t stream);
247 surf_action_t(*stat) (void *workstation, int fd, void* buf);
248 int (*link_shared) (const void *link);
249 xbt_dict_t(*get_properties) (const void *resource);
250 void* (*link_create_resource) (const char *name,
252 tmgr_trace_t bw_trace,
254 tmgr_trace_t lat_trace,
255 e_surf_resource_state_t
257 tmgr_trace_t state_trace,
258 e_surf_link_sharing_policy_t
259 policy, xbt_dict_t properties);
260 void* (*cpu_create_resource) (const char *name, double power_peak,
262 tmgr_trace_t power_trace,
263 e_surf_resource_state_t state_initial,
264 tmgr_trace_t state_trace,
265 xbt_dict_t cpu_properties);
266 void (*add_traces) (void);
268 } s_surf_model_extension_workstation_t;
273 /** \brief Model datatype
274 * \ingroup SURF_models
276 * Generic data structure for a model. The workstations,
277 * the CPUs and the network links are examples of models.
279 typedef struct surf_model {
280 const char *name; /**< Name of this model */
281 s_surf_action_state_t states; /**< Any living action on this model */
283 e_surf_action_state_t(*action_state_get) (surf_action_t action);
284 /**< Return the state of an action */
285 void (*action_state_set) (surf_action_t action,
286 e_surf_action_state_t state);
287 /**< Change an action state*/
289 double (*action_get_start_time) (surf_action_t action); /**< Return the start time of an action */
290 double (*action_get_finish_time) (surf_action_t action); /**< Return the finish time of an action */
291 int (*action_unref) (surf_action_t action); /**< Specify that we don't use that action anymore */
292 void (*action_cancel) (surf_action_t action); /**< Cancel a running action */
293 void (*action_recycle) (surf_action_t action); /**< Recycle an action */
294 void (*action_data_set) (surf_action_t action, void *data); /**< Set the user data of an action */
295 void (*suspend) (surf_action_t action); /**< Suspend an action */
296 void (*resume) (surf_action_t action); /**< Resume a suspended action */
297 int (*is_suspended) (surf_action_t action); /**< Return whether an action is suspended */
298 void (*set_max_duration) (surf_action_t action, double duration); /**< Set the max duration of an action*/
299 void (*set_priority) (surf_action_t action, double priority); /**< Set the priority of an action */
301 void (*set_category) (surf_action_t action, const char *category); /**< Set the category of an action */
303 double (*get_remains) (surf_action_t action); /**< Get the remains of an action */
304 #ifdef HAVE_LATENCY_BOUND_TRACKING
305 int (*get_latency_limited) (surf_action_t action); /**< Return 1 if action is limited by latency, 0 otherwise */
308 surf_model_private_t model_private;
311 s_surf_model_extension_cpu_t cpu;
312 s_surf_model_extension_network_t network;
313 s_surf_model_extension_storage_t storage;
314 s_surf_model_extension_workstation_t workstation;
318 surf_model_t surf_model_init(void);
319 void surf_model_exit(surf_model_t model);
321 static inline void *surf_cpu_resource_by_name(const char *name) {
322 return xbt_lib_get_or_null(host_lib, name, SURF_CPU_LEVEL);
324 static inline void *surf_workstation_resource_by_name(const char *name){
325 return xbt_lib_get_or_null(host_lib, name, SURF_WKS_LEVEL);
327 static inline void *surf_network_resource_by_name(const char *name){
328 return xbt_lib_get_or_null(link_lib, name, SURF_LINK_LEVEL);
331 typedef struct surf_resource {
334 xbt_dict_t properties;
335 } s_surf_resource_t, *surf_resource_t;
340 * Resource which have a metric handled by a maxmin system
345 tmgr_trace_event_t event;
348 typedef struct surf_resource_lmm {
349 s_surf_resource_t generic_resource;
350 lmm_constraint_t constraint;
351 e_surf_resource_state_t state_current;
352 tmgr_trace_event_t state_event;
353 s_surf_metric_t power;
354 } s_surf_resource_lmm_t, *surf_resource_lmm_t;
356 /**************************************/
357 /* Implementations of model object */
358 /**************************************/
361 /** \brief The CPU model
362 * \ingroup SURF_models
364 XBT_PUBLIC_DATA(surf_model_t) surf_cpu_model;
366 /** \brief Initializes the CPU model with the model Cas01
367 * \ingroup SURF_models
369 * By default, this model uses the lazy optimization mechanism that
370 * relies on partial invalidation in LMM and a heap for lazy action update.
371 * You can change this behavior by setting the cpu/optim configuration
372 * variable to a different value.
374 * This function is called by surf_workstation_model_init_CLM03
375 * so you shouldn't have to call it by yourself.
377 * \see surf_workstation_model_init_CLM03()
379 XBT_PUBLIC(void) surf_cpu_model_init_Cas01(void);
381 /** \brief Initializes the CPU model with trace integration [Deprecated]
382 * \ingroup SURF_models
384 * You shouldn't have to call it by yourself.
385 * \see surf_workstation_model_init_CLM03()
387 XBT_PUBLIC(void) surf_cpu_model_init_ti(void);
389 /** \brief This function call the share resources function needed
392 XBT_PUBLIC(double) generic_share_resources(double now);
394 /** \brief This function call the update action state function needed
397 XBT_PUBLIC(void) generic_update_actions_state(double now, double delta);
399 /** \brief The list of all available optimization modes (both for cpu and networks).
400 * \ingroup SURF_models
401 * These optimization modes can be set using --cfg=cpu/optim:... and --cfg=network/optim:...
403 XBT_PUBLIC_DATA(s_surf_model_description_t) surf_optimization_mode_description[];
405 /** \brief The list of all available cpu model models
406 * \ingroup SURF_models
408 XBT_PUBLIC_DATA(s_surf_model_description_t) surf_cpu_model_description[];
410 XBT_PUBLIC(void) create_workstations(void);
412 /**\brief create new host bypass the parser
417 /** \brief The network model
418 * \ingroup SURF_models
420 * When creating a new API on top on SURF, you shouldn't use the
421 * network model unless you know what you are doing. Only the workstation
422 * model should be accessed because depending on the platform model,
423 * the network model can be NULL.
425 XBT_PUBLIC_DATA(surf_model_t) surf_network_model;
427 /** \brief Same as network model 'LagrangeVelho', only with different correction factors.
428 * \ingroup SURF_models
430 * This model is proposed by Pierre-Nicolas Clauss and Martin Quinson and Stéphane Génaud
431 * based on the model 'LV08' and different correction factors depending on the communication
432 * size (< 1KiB, < 64KiB, >= 64KiB).
433 * See comments in the code for more information.
435 * \see surf_workstation_model_init_SMPI()
437 XBT_PUBLIC(void) surf_network_model_init_SMPI(void);
439 /** \brief Initializes the platform with the network model 'LegrandVelho'
440 * \ingroup SURF_models
442 * This model is proposed by Arnaud Legrand and Pedro Velho based on
443 * the results obtained with the GTNets simulator for onelink and
444 * dogbone sharing scenarios. See comments in the code for more information.
446 * \see surf_workstation_model_init_LegrandVelho()
448 XBT_PUBLIC(void) surf_network_model_init_LegrandVelho(void);
450 /** \brief Initializes the platform with the network model 'Constant'
451 * \ingroup SURF_models
453 * In this model, the communication time between two network cards is
454 * constant, hence no need for a routing table. This is particularly
455 * usefull when simulating huge distributed algorithms where
456 * scalability is really an issue. This function is called in
457 * conjunction with surf_workstation_model_init_compound.
459 * \see surf_workstation_model_init_compound()
461 XBT_PUBLIC(void) surf_network_model_init_Constant(void);
463 /** \brief Initializes the platform with the network model CM02
464 * \ingroup SURF_models
466 * This function is called by surf_workstation_model_init_CLM03
467 * or by yourself only if you plan using surf_workstation_model_init_compound
468 * See comments in the code for more information.
470 * \see surf_workstation_model_init_CLM03()
472 XBT_PUBLIC(void) surf_network_model_init_CM02(void);
475 * brief initialize the the network model bypassing the XML parser
477 XBT_PUBLIC(void) surf_network_model_init_bypass(const char *id,
482 /** \brief Initializes the platform with the network model GTNETS
483 * \ingroup SURF_models
484 * \param filename XML platform file name
486 * This function is called by surf_workstation_model_init_GTNETS
487 * or by yourself only if you plan using surf_workstation_model_init_compound
489 * \see surf_workstation_model_init_GTNETS()
491 XBT_PUBLIC(void) surf_network_model_init_GbTNETS(void);
495 /** \brief Initializes the platform with the network model NS3
496 * \ingroup SURF_models
497 * \param filename XML platform file name
499 * This function is called by surf_workstation_model_init_NS3
500 * or by yourself only if you plan using surf_workstation_model_init_compound
502 * \see surf_workstation_model_init_NS3()
504 XBT_PUBLIC(void) surf_network_model_init_NS3(void);
506 XBT_PUBLIC(void) parse_ns3_add_host(void);
507 XBT_PUBLIC(void) parse_ns3_add_router(void);
508 XBT_PUBLIC(void) parse_ns3_add_link(void);
509 XBT_PUBLIC(void) parse_ns3_add_AS(void);
510 XBT_PUBLIC(void) parse_ns3_add_route(void);
511 XBT_PUBLIC(void) parse_ns3_add_ASroute(void);
512 XBT_PUBLIC(void) parse_ns3_add_cluster(void);
513 XBT_PUBLIC(void) parse_ns3_end_platform(void);
514 XBT_PUBLIC(void) create_ns3_topology(void);
515 XBT_PUBLIC(double) ns3_get_link_latency(const void *link);
516 XBT_PUBLIC(double) ns3_get_link_bandwidth(const void *link);
520 /** \brief Initializes the platform with the network model Reno
521 * \ingroup SURF_models
522 * \param filename XML platform file name
524 * The problem is related to max( sum( arctan(C * Df * xi) ) ).
527 * [LOW03] S. H. Low. A duality model of TCP and queue management algorithms.
528 * IEEE/ACM Transaction on Networking, 11(4):525-536, 2003.
530 * Call this function only if you plan using surf_workstation_model_init_compound.
533 XBT_PUBLIC(void) surf_network_model_init_Reno(void);
535 /** \brief Initializes the platform with the network model Reno2
536 * \ingroup SURF_models
537 * \param filename XML platform file name
539 * The problem is related to max( sum( arctan(C * Df * xi) ) ).
542 * [LOW01] S. H. Low. A duality model of TCP and queue management algorithms.
543 * IEEE/ACM Transaction on Networking, 11(4):525-536, 2003.
545 * Call this function only if you plan using surf_workstation_model_init_compound.
548 XBT_PUBLIC(void) surf_network_model_init_Reno2(void);
550 /** \brief Initializes the platform with the network model Vegas
551 * \ingroup SURF_models
552 * \param filename XML platform file name
554 * This problem is related to max( sum( a * Df * ln(xi) ) ) which is equivalent
555 * to the proportional fairness.
558 * [LOW03] S. H. Low. A duality model of TCP and queue management algorithms.
559 * IEEE/ACM Transaction on Networking, 11(4):525-536, 2003.
561 * Call this function only if you plan using surf_workstation_model_init_compound.
564 XBT_PUBLIC(void) surf_network_model_init_Vegas(void);
566 /** \brief The list of all available network model models
567 * \ingroup SURF_models
569 XBT_PUBLIC_DATA(s_surf_model_description_t)
570 surf_network_model_description[];
573 /** \brief The workstation model
574 * \ingroup SURF_models
576 * Note that when you create an API on top of SURF,
577 * the workstation model should be the only one you use
578 * because depending on the platform model, the network model and the CPU model
581 XBT_PUBLIC_DATA(surf_model_t) surf_workstation_model;
583 /** \brief Initializes the platform with a compound workstation model
584 * \ingroup SURF_models
586 * This function should be called after a cpu_model and a
587 * network_model have been set up.
590 XBT_PUBLIC(void) surf_workstation_model_init_compound(void);
592 /** \brief Initializes the platform with the current best network and cpu models at hand
593 * \ingroup SURF_models
595 * This platform model seperates the workstation model and the network model.
596 * The workstation model will be initialized with the model compound, the network
597 * model with the model LV08 (with cross traffic support) and the CPU model with
599 * Such model is subject to modification with warning in the ChangeLog so monitor it!
602 XBT_PUBLIC(void) surf_workstation_model_init_current_default(void);
604 /** \brief Initializes the platform with the workstation model CLM03
605 * \ingroup SURF_models
607 * This platform model seperates the workstation model and the network model.
608 * The workstation model will be initialized with the model CLM03, the network
609 * model with the model CM02 and the CPU model with the model Cas01.
610 * In future releases, some other network models will be implemented and will be
611 * combined with the workstation model CLM03.
614 XBT_PUBLIC(void) surf_workstation_model_init_CLM03(void);
616 /** \brief Initializes the platform with the model KCCFLN05
617 * \ingroup SURF_models
619 * With this model, only parallel tasks can be used. Resource sharing
620 * is done by identifying bottlenecks and giving an equal share of
621 * the model to each action.
624 XBT_PUBLIC(void) surf_workstation_model_init_ptask_L07(void);
626 /** \brief The list of all available workstation model models
627 * \ingroup SURF_models
629 XBT_PUBLIC_DATA(s_surf_model_description_t)
630 surf_workstation_model_description[];
632 /** \brief List of initialized models
633 * \ingroup SURF_models
635 XBT_PUBLIC_DATA(xbt_dynar_t) model_list;
637 /*******************************************/
638 /*** SURF Globals **************************/
639 /*******************************************/
640 XBT_PUBLIC_DATA(xbt_cfg_t) _surf_cfg_set;
642 /** \brief Initialize SURF
643 * \ingroup SURF_simulation
644 * \param argc argument number
645 * \param argv arguments
647 * This function has to be called to initialize the common
648 * structures. Then you will have to create the environment by
650 * e.g. surf_workstation_model_init_CLM03()
652 * \see surf_workstation_model_init_CLM03(), surf_workstation_model_init_compound(), surf_exit()
654 XBT_PUBLIC(void) surf_init(int *argc, char **argv); /* initialize common structures */
656 /** \brief Finish simulation initialization
657 * \ingroup SURF_simulation
659 * This function must be called before the first call to surf_solve()
661 XBT_PUBLIC(void) surf_presolve(void);
663 /** \brief Performs a part of the simulation
664 * \ingroup SURF_simulation
665 * \param max_date Maximum date to update the simulation to, or -1
666 * \return the elapsed time, or -1.0 if no event could be executed
668 * This function execute all possible events, update the action states
669 * and returns the time elapsed.
670 * When you call execute or communicate on a model, the corresponding actions
671 * are not executed immediately but only when you call surf_solve.
672 * Note that the returned elapsed time can be zero.
674 XBT_PUBLIC(double) surf_solve(double max_date);
676 /** \brief Return the current time
677 * \ingroup SURF_simulation
679 * Return the current time in millisecond.
681 XBT_PUBLIC(double) surf_get_clock(void);
684 * \ingroup SURF_simulation
690 XBT_PUBLIC(void) surf_exit(void);
692 /* Prototypes of the functions that handle the properties */
693 XBT_PUBLIC_DATA(xbt_dict_t) current_property_set; /* the prop set for the currently parsed element (also used in SIMIX) */
694 XBT_PUBLIC(void) parse_properties(void);
696 /* surf parse file related (public because called from a test suite) */
697 XBT_PUBLIC(void) parse_platform_file(const char *file);
699 /* Stores the sets */
700 XBT_PUBLIC_DATA(xbt_dict_t) set_list;
702 /* For the trace and trace:connect tag (store their content till the end of the parsing) */
703 XBT_PUBLIC_DATA(xbt_dict_t) traces_set_list;
704 XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_host_avail;
705 XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_power;
706 XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_link_avail;
707 XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_bandwidth;
708 XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_latency;
711 XBT_PUBLIC(double) get_cpu_power(const char *power);
713 int surf_get_nthreads(void);
714 void surf_set_nthreads(int nthreads);
717 #endif /* _SURF_SURF_H */