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 enum heap_action_type{
66 /** \brief Action structure
67 * \ingroup SURF_actions
69 * Never create s_surf_action_t by yourself ! The actions are created
70 * on the fly when you call execute or communicate on a model.
72 * \see e_surf_action_state_t
74 typedef struct surf_action {
75 s_xbt_swag_hookup_t state_hookup;
77 double cost; /**< cost */
78 double priority; /**< priority (1.0 by default) */
79 double max_duration; /**< max_duration (may fluctuate until
80 the task is completed) */
81 double remains; /**< How much of that cost remains to
82 * be done in the currently running task */
83 #ifdef HAVE_LATENCY_BOUND_TRACKING
84 int latency_limited; /**< Set to 1 if is limited by latency, 0 otherwise */
87 double start; /**< start time */
88 double finish; /**< finish time : this is modified during the run
89 * and fluctuates until the task is completed */
90 void *data; /**< for your convenience */
92 surf_model_t model_type;
94 char *category; /**< tracing category for categorized resource utilization monitoring */
98 typedef struct surf_action_lmm {
99 s_surf_action_t generic_action;
100 lmm_variable_t variable;
102 s_xbt_swag_hookup_t action_list_hookup;
105 enum heap_action_type hat;
106 } s_surf_action_lmm_t, *surf_action_lmm_t;
108 /** \brief Action states
109 * \ingroup SURF_actions
113 * \see surf_action_t, surf_action_state_t
116 SURF_ACTION_READY = 0, /**< Ready */
117 SURF_ACTION_RUNNING, /**< Running */
118 SURF_ACTION_FAILED, /**< Task Failure */
119 SURF_ACTION_DONE, /**< Completed */
120 SURF_ACTION_TO_FREE, /**< Action to free in next cleanup */
121 SURF_ACTION_NOT_IN_THE_SYSTEM
122 /**< Not in the system anymore. Why did you ask ? */
123 } e_surf_action_state_t;
125 /** \brief Action state sets
126 * \ingroup SURF_actions
128 * This structure contains some sets of actions.
129 * It provides a fast access to the actions in each state.
131 * \see surf_action_t, e_surf_action_state_t
133 typedef struct surf_action_state {
134 xbt_swag_t ready_action_set;
135 /**< Actions in state SURF_ACTION_READY */
136 xbt_swag_t running_action_set;
137 /**< Actions in state SURF_ACTION_RUNNING */
138 xbt_swag_t failed_action_set;
139 /**< Actions in state SURF_ACTION_FAILED */
140 xbt_swag_t done_action_set;
141 /**< Actions in state SURF_ACTION_DONE */
142 } s_surf_action_state_t, *surf_action_state_t;
144 /***************************/
145 /* Generic model object */
146 /***************************/
147 typedef struct s_routing_global s_routing_global_t, *routing_global_t;
148 XBT_PUBLIC_DATA(routing_global_t) global_routing;
151 /** \brief Private data available on all models
152 * \ingroup SURF_models
154 typedef struct surf_model_private *surf_model_private_t;
158 /** \brief CPU model extension public
159 * \ingroup SURF_models
161 * Public functions specific to the CPU model.
163 typedef struct surf_cpu_model_extension_public {
164 surf_action_t(*execute) (void *cpu, double size);
165 surf_action_t(*sleep) (void *cpu, double duration);
166 e_surf_resource_state_t(*get_state) (void *cpu);
167 double (*get_speed) (void *cpu, double load);
168 double (*get_available_speed) (void *cpu);
169 void* (*create_resource) (const char *name, double power_peak,
171 tmgr_trace_t power_trace,
173 e_surf_resource_state_t state_initial,
174 tmgr_trace_t state_trace,
175 xbt_dict_t cpu_properties);
176 void (*add_traces) (void);
177 } s_surf_model_extension_cpu_t;
179 typedef struct s_network_element_info *network_element_t;
183 /** \brief Network model extension public
184 * \ingroup SURF_models
186 * Public functions specific to the network model
188 typedef struct surf_network_model_extension_public {
189 surf_action_t (*communicate) (network_element_t src,
190 network_element_t dst,
191 double size, double rate);
192 xbt_dynar_t(*get_route) (void *src, void *dst); //FIXME: kill field? That is done by the routing nowadays
193 double (*get_link_bandwidth) (const void *link);
194 double (*get_link_latency) (const void *link);
195 int (*link_shared) (const void *link);
196 void (*add_traces) (void);
197 void* (*create_resource) (const char *name,
199 tmgr_trace_t bw_trace,
201 tmgr_trace_t lat_trace,
202 e_surf_resource_state_t
204 tmgr_trace_t state_trace,
205 e_surf_link_sharing_policy_t policy,
206 xbt_dict_t properties);
207 } s_surf_model_extension_network_t;
211 /** \brief Storage model extension public
212 * \ingroup SURF_models
214 * Public functions specific to the Storage model.
217 typedef struct surf_storage_model_extension_public {
218 surf_action_t(*open) (void *storage, const char* path, const char* mode);
219 surf_action_t(*close) (void *storage, m_file_t fp);
220 surf_action_t(*read) (void *storage, void* ptr, size_t size, size_t nmemb, m_file_t stream);
221 surf_action_t(*write) (void *storage, const void* ptr, size_t size, size_t nmemb, m_file_t stream);
222 surf_action_t(*stat) (void *storage, int fd, void* buf);
223 void* (*create_resource) (const char* id, const char* model,const char* type_id);
224 } s_surf_model_extension_storage_t;
226 /** \brief Workstation model extension public
227 * \ingroup SURF_models
229 * Public functions specific to the workstation model.
231 typedef struct surf_workstation_model_extension_public {
232 surf_action_t(*execute) (void *workstation, double size); /**< Execute a computation amount on a workstation
233 and create the corresponding action */
234 surf_action_t(*sleep) (void *workstation, double duration); /**< Make a workstation sleep during a given duration */
235 e_surf_resource_state_t(*get_state) (void *workstation); /**< Return the CPU state of a workstation */
236 double (*get_speed) (void *workstation, double load); /**< Return the speed of a workstation */
237 double (*get_available_speed) (void *workstation); /**< Return tha available speed of a workstation */
238 surf_action_t(*communicate) (void *workstation_src, /**< Execute a communication amount between two workstations */
239 void *workstation_dst, double size,
241 // FIXME: kill next field, which duplicates the routing
242 xbt_dynar_t(*get_route) (void *workstation_src, void *workstation_dst); /**< Get the list of links between two ws */
244 surf_action_t(*execute_parallel_task) (int workstation_nb, /**< Execute a parallel task on several workstations */
245 void **workstation_list,
246 double *computation_amount,
247 double *communication_amount,
248 double amount, double rate);
249 double (*get_link_bandwidth) (const void *link); /**< Return the current bandwidth of a network link */
250 double (*get_link_latency) (const void *link); /**< Return the current latency of a network link */
251 surf_action_t(*open) (void *workstation, const char* storage, const char* path, const char* mode);
252 surf_action_t(*close) (void *workstation, const char* storage, m_file_t fp);
253 surf_action_t(*read) (void *workstation, const char* storage, void* ptr, size_t size, size_t nmemb, m_file_t stream);
254 surf_action_t(*write) (void *workstation, const char* storage, const void* ptr, size_t size, size_t nmemb, m_file_t stream);
255 surf_action_t(*stat) (void *workstation, const char* storage, int fd, void* buf);
256 int (*link_shared) (const void *link);
257 xbt_dict_t(*get_properties) (const void *resource);
258 void* (*link_create_resource) (const char *name,
260 tmgr_trace_t bw_trace,
262 tmgr_trace_t lat_trace,
263 e_surf_resource_state_t
265 tmgr_trace_t state_trace,
266 e_surf_link_sharing_policy_t
267 policy, xbt_dict_t properties);
268 void* (*cpu_create_resource) (const char *name, double power_peak,
270 tmgr_trace_t power_trace,
271 e_surf_resource_state_t state_initial,
272 tmgr_trace_t state_trace,
273 xbt_dict_t cpu_properties);
274 void (*add_traces) (void);
276 } s_surf_model_extension_workstation_t;
281 /** \brief Model datatype
282 * \ingroup SURF_models
284 * Generic data structure for a model. The workstations,
285 * the CPUs and the network links are examples of models.
287 typedef struct surf_model {
288 const char *name; /**< Name of this model */
289 s_surf_action_state_t states; /**< Any living action on this model */
291 e_surf_action_state_t(*action_state_get) (surf_action_t action);
292 /**< Return the state of an action */
293 void (*action_state_set) (surf_action_t action,
294 e_surf_action_state_t state);
295 /**< Change an action state*/
297 double (*action_get_start_time) (surf_action_t action); /**< Return the start time of an action */
298 double (*action_get_finish_time) (surf_action_t action); /**< Return the finish time of an action */
299 int (*action_unref) (surf_action_t action); /**< Specify that we don't use that action anymore */
300 void (*action_cancel) (surf_action_t action); /**< Cancel a running action */
301 void (*action_recycle) (surf_action_t action); /**< Recycle an action */
302 void (*action_data_set) (surf_action_t action, void *data); /**< Set the user data of an action */
303 void (*suspend) (surf_action_t action); /**< Suspend an action */
304 void (*resume) (surf_action_t action); /**< Resume a suspended action */
305 int (*is_suspended) (surf_action_t action); /**< Return whether an action is suspended */
306 void (*set_max_duration) (surf_action_t action, double duration); /**< Set the max duration of an action*/
307 void (*set_priority) (surf_action_t action, double priority); /**< Set the priority of an action */
309 void (*set_category) (surf_action_t action, const char *category); /**< Set the category of an action */
311 double (*get_remains) (surf_action_t action); /**< Get the remains of an action */
312 #ifdef HAVE_LATENCY_BOUND_TRACKING
313 int (*get_latency_limited) (surf_action_t action); /**< Return 1 if action is limited by latency, 0 otherwise */
316 surf_model_private_t model_private;
319 s_surf_model_extension_cpu_t cpu;
320 s_surf_model_extension_network_t network;
321 s_surf_model_extension_storage_t storage;
322 s_surf_model_extension_workstation_t workstation;
326 surf_model_t surf_model_init(void);
327 void surf_model_exit(surf_model_t model);
329 static inline void *surf_cpu_resource_by_name(const char *name) {
330 return xbt_lib_get_or_null(host_lib, name, SURF_CPU_LEVEL);
332 static inline void *surf_workstation_resource_by_name(const char *name){
333 return xbt_lib_get_or_null(host_lib, name, SURF_WKS_LEVEL);
335 static inline void *surf_network_resource_by_name(const char *name){
336 return xbt_lib_get_or_null(link_lib, name, SURF_LINK_LEVEL);
338 static inline void *surf_storage_resource_by_name(const char *name){
339 return xbt_lib_get_or_null(storage_lib, name, SURF_STORAGE_LEVEL);
342 typedef struct surf_resource {
345 xbt_dict_t properties;
346 } s_surf_resource_t, *surf_resource_t;
351 typedef struct s_storage_type {
355 xbt_dict_t properties;
356 } s_storage_type_t, *storage_type_t;
358 typedef struct s_mount {
361 } s_mount_t, *mount_t;
363 typedef struct s_content {
370 } s_content_t, *content_t;
373 * Resource which have a metric handled by a maxmin system
378 tmgr_trace_event_t event;
381 typedef struct surf_resource_lmm {
382 s_surf_resource_t generic_resource;
383 lmm_constraint_t constraint;
384 e_surf_resource_state_t state_current;
385 tmgr_trace_event_t state_event;
386 s_surf_metric_t power;
387 } s_surf_resource_lmm_t, *surf_resource_lmm_t;
389 /**************************************/
390 /* Implementations of model object */
391 /**************************************/
394 /** \brief The CPU model
395 * \ingroup SURF_models
397 XBT_PUBLIC_DATA(surf_model_t) surf_cpu_model;
399 /** \brief Initializes the CPU model with the model Cas01
400 * \ingroup SURF_models
402 * By default, this model uses the lazy optimization mechanism that
403 * relies on partial invalidation in LMM and a heap for lazy action update.
404 * You can change this behavior by setting the cpu/optim configuration
405 * variable to a different value.
407 * This function is called by surf_workstation_model_init_CLM03
408 * so you shouldn't have to call it by yourself.
410 * \see surf_workstation_model_init_CLM03()
412 XBT_PUBLIC(void) surf_cpu_model_init_Cas01(void);
414 /** \brief Initializes the CPU model with trace integration [Deprecated]
415 * \ingroup SURF_models
417 * You shouldn't have to call it by yourself.
418 * \see surf_workstation_model_init_CLM03()
420 XBT_PUBLIC(void) surf_cpu_model_init_ti(void);
422 /** \brief This function call the share resources function needed
425 XBT_PUBLIC(double) generic_share_resources(double now);
427 /** \brief This function call the update action state function needed
430 XBT_PUBLIC(void) generic_update_actions_state(double now, double delta);
432 /** \brief The list of all available optimization modes (both for cpu and networks).
433 * \ingroup SURF_models
434 * These optimization modes can be set using --cfg=cpu/optim:... and --cfg=network/optim:...
436 XBT_PUBLIC_DATA(s_surf_model_description_t) surf_optimization_mode_description[];
438 /** \brief The list of all available cpu model models
439 * \ingroup SURF_models
441 XBT_PUBLIC_DATA(s_surf_model_description_t) surf_cpu_model_description[];
443 XBT_PUBLIC(void) create_workstations(void);
445 /**\brief create new host bypass the parser
450 /** \brief The network model
451 * \ingroup SURF_models
453 * When creating a new API on top on SURF, you shouldn't use the
454 * network model unless you know what you are doing. Only the workstation
455 * model should be accessed because depending on the platform model,
456 * the network model can be NULL.
458 XBT_PUBLIC_DATA(surf_model_t) surf_network_model;
460 /** \brief Same as network model 'LagrangeVelho', only with different correction factors.
461 * \ingroup SURF_models
463 * This model is proposed by Pierre-Nicolas Clauss and Martin Quinson and Stéphane Génaud
464 * based on the model 'LV08' and different correction factors depending on the communication
465 * size (< 1KiB, < 64KiB, >= 64KiB).
466 * See comments in the code for more information.
468 * \see surf_workstation_model_init_SMPI()
470 XBT_PUBLIC(void) surf_network_model_init_SMPI(void);
472 /** \brief Initializes the platform with the network model 'LegrandVelho'
473 * \ingroup SURF_models
475 * This model is proposed by Arnaud Legrand and Pedro Velho based on
476 * the results obtained with the GTNets simulator for onelink and
477 * dogbone sharing scenarios. See comments in the code for more information.
479 * \see surf_workstation_model_init_LegrandVelho()
481 XBT_PUBLIC(void) surf_network_model_init_LegrandVelho(void);
483 /** \brief Initializes the platform with the network model 'Constant'
484 * \ingroup SURF_models
486 * In this model, the communication time between two network cards is
487 * constant, hence no need for a routing table. This is particularly
488 * usefull when simulating huge distributed algorithms where
489 * scalability is really an issue. This function is called in
490 * conjunction with surf_workstation_model_init_compound.
492 * \see surf_workstation_model_init_compound()
494 XBT_PUBLIC(void) surf_network_model_init_Constant(void);
496 /** \brief Initializes the platform with the network model CM02
497 * \ingroup SURF_models
499 * This function is called by surf_workstation_model_init_CLM03
500 * or by yourself only if you plan using surf_workstation_model_init_compound
501 * See comments in the code for more information.
503 * \see surf_workstation_model_init_CLM03()
505 XBT_PUBLIC(void) surf_network_model_init_CM02(void);
508 * brief initialize the the network model bypassing the XML parser
510 XBT_PUBLIC(void) surf_network_model_init_bypass(const char *id,
515 /** \brief Initializes the platform with the network model GTNETS
516 * \ingroup SURF_models
517 * \param filename XML platform file name
519 * This function is called by surf_workstation_model_init_GTNETS
520 * or by yourself only if you plan using surf_workstation_model_init_compound
522 * \see surf_workstation_model_init_GTNETS()
524 XBT_PUBLIC(void) surf_network_model_init_GTNETS(void);
528 /** \brief Initializes the platform with the network model NS3
529 * \ingroup SURF_models
530 * \param filename XML platform file name
532 * This function is called by surf_workstation_model_init_NS3
533 * or by yourself only if you plan using surf_workstation_model_init_compound
535 * \see surf_workstation_model_init_NS3()
537 XBT_PUBLIC(void) surf_network_model_init_NS3(void);
540 /** \brief Initializes the platform with the network model Reno
541 * \ingroup SURF_models
542 * \param filename XML platform file name
544 * The problem is related to max( sum( arctan(C * Df * xi) ) ).
547 * [LOW03] S. H. Low. A duality model of TCP and queue management algorithms.
548 * IEEE/ACM Transaction on Networking, 11(4):525-536, 2003.
550 * Call this function only if you plan using surf_workstation_model_init_compound.
553 XBT_PUBLIC(void) surf_network_model_init_Reno(void);
555 /** \brief Initializes the platform with the network model Reno2
556 * \ingroup SURF_models
557 * \param filename XML platform file name
559 * The problem is related to max( sum( arctan(C * Df * xi) ) ).
562 * [LOW01] S. H. Low. A duality model of TCP and queue management algorithms.
563 * IEEE/ACM Transaction on Networking, 11(4):525-536, 2003.
565 * Call this function only if you plan using surf_workstation_model_init_compound.
568 XBT_PUBLIC(void) surf_network_model_init_Reno2(void);
570 /** \brief Initializes the platform with the network model Vegas
571 * \ingroup SURF_models
572 * \param filename XML platform file name
574 * This problem is related to max( sum( a * Df * ln(xi) ) ) which is equivalent
575 * to the proportional fairness.
578 * [LOW03] S. H. Low. A duality model of TCP and queue management algorithms.
579 * IEEE/ACM Transaction on Networking, 11(4):525-536, 2003.
581 * Call this function only if you plan using surf_workstation_model_init_compound.
584 XBT_PUBLIC(void) surf_network_model_init_Vegas(void);
586 /** \brief The list of all available network model models
587 * \ingroup SURF_models
589 XBT_PUBLIC_DATA(s_surf_model_description_t)
590 surf_network_model_description[];
597 /** \brief The storage model
598 * \ingroup SURF_models
600 XBT_PUBLIC(void) surf_storage_model_init_default(void);
602 /** \brief The list of all available storage modes.
603 * \ingroup SURF_models
604 * This storage mode can be set using --cfg=storage/model:...
606 XBT_PUBLIC_DATA(s_surf_model_description_t) surf_storage_model_description[];
614 /** \brief The workstation model
615 * \ingroup SURF_models
617 * Note that when you create an API on top of SURF,
618 * the workstation model should be the only one you use
619 * because depending on the platform model, the network model and the CPU model
622 XBT_PUBLIC_DATA(surf_model_t) surf_workstation_model;
624 /** \brief Initializes the platform with a compound workstation model
625 * \ingroup SURF_models
627 * This function should be called after a cpu_model and a
628 * network_model have been set up.
631 XBT_PUBLIC(void) surf_workstation_model_init_compound(void);
633 /** \brief Initializes the platform with the current best network and cpu models at hand
634 * \ingroup SURF_models
636 * This platform model seperates the workstation model and the network model.
637 * The workstation model will be initialized with the model compound, the network
638 * model with the model LV08 (with cross traffic support) and the CPU model with
640 * Such model is subject to modification with warning in the ChangeLog so monitor it!
643 XBT_PUBLIC(void) surf_workstation_model_init_current_default(void);
645 /** \brief Initializes the platform with the workstation model CLM03
646 * \ingroup SURF_models
648 * This platform model seperates the workstation model and the network model.
649 * The workstation model will be initialized with the model CLM03, the network
650 * model with the model CM02 and the CPU model with the model Cas01.
651 * In future releases, some other network models will be implemented and will be
652 * combined with the workstation model CLM03.
655 XBT_PUBLIC(void) surf_workstation_model_init_CLM03(void);
657 /** \brief Initializes the platform with the model KCCFLN05
658 * \ingroup SURF_models
660 * With this model, only parallel tasks can be used. Resource sharing
661 * is done by identifying bottlenecks and giving an equal share of
662 * the model to each action.
665 XBT_PUBLIC(void) surf_workstation_model_init_ptask_L07(void);
667 /** \brief The list of all available workstation model models
668 * \ingroup SURF_models
670 XBT_PUBLIC_DATA(s_surf_model_description_t)
671 surf_workstation_model_description[];
673 /** \brief List of initialized models
674 * \ingroup SURF_models
676 XBT_PUBLIC_DATA(xbt_dynar_t) model_list;
678 /*******************************************/
679 /*** SURF Globals **************************/
680 /*******************************************/
681 XBT_PUBLIC_DATA(xbt_cfg_t) _surf_cfg_set;
683 /** \brief Initialize SURF
684 * \ingroup SURF_simulation
685 * \param argc argument number
686 * \param argv arguments
688 * This function has to be called to initialize the common
689 * structures. Then you will have to create the environment by
691 * e.g. surf_workstation_model_init_CLM03()
693 * \see surf_workstation_model_init_CLM03(), surf_workstation_model_init_compound(), surf_exit()
695 XBT_PUBLIC(void) surf_init(int *argc, char **argv); /* initialize common structures */
697 /** \brief Finish simulation initialization
698 * \ingroup SURF_simulation
700 * This function must be called before the first call to surf_solve()
702 XBT_PUBLIC(void) surf_presolve(void);
704 /** \brief Performs a part of the simulation
705 * \ingroup SURF_simulation
706 * \param max_date Maximum date to update the simulation to, or -1
707 * \return the elapsed time, or -1.0 if no event could be executed
709 * This function execute all possible events, update the action states
710 * and returns the time elapsed.
711 * When you call execute or communicate on a model, the corresponding actions
712 * are not executed immediately but only when you call surf_solve.
713 * Note that the returned elapsed time can be zero.
715 XBT_PUBLIC(double) surf_solve(double max_date);
717 /** \brief Return the current time
718 * \ingroup SURF_simulation
720 * Return the current time in millisecond.
722 XBT_PUBLIC(double) surf_get_clock(void);
725 * \ingroup SURF_simulation
731 XBT_PUBLIC(void) surf_exit(void);
733 /* Prototypes of the functions that handle the properties */
734 XBT_PUBLIC_DATA(xbt_dict_t) current_property_set; /* the prop set for the currently parsed element (also used in SIMIX) */
735 XBT_PUBLIC(void) parse_properties(void);
737 /* surf parse file related (public because called from a test suite) */
738 XBT_PUBLIC(void) parse_platform_file(const char *file);
740 /* Stores the sets */
741 XBT_PUBLIC_DATA(xbt_dict_t) set_list;
743 /* For the trace and trace:connect tag (store their content till the end of the parsing) */
744 XBT_PUBLIC_DATA(xbt_dict_t) traces_set_list;
745 XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_host_avail;
746 XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_power;
747 XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_link_avail;
748 XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_bandwidth;
749 XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_latency;
752 XBT_PUBLIC(double) get_cpu_power(const char *power);
754 int surf_get_nthreads(void);
755 void surf_set_nthreads(int nthreads);
758 #endif /* _SURF_SURF_H */