SimGrid  3.14.159
Versatile Simulation of Distributed Systems

Detailed Description

Functions to create the environment and launch the simulation.

This section describes the functions for initializing SimDag, launching the simulation and exiting SimDag.

Functions

void SD_init (int *argc, char **argv)
 Initializes SD internal data. More...
 
void SD_config (const char *key, const char *value)
 set a configuration variable More...
 
void SD_create_environment (const char *platform_file)
 Creates the environment. More...
 
xbt_dynar_t SD_simulate (double how_long)
 Launches the simulation. More...
 
double SD_get_clock ()
 Returns the current clock, in seconds. More...
 
void SD_exit ()
 Destroys all SD internal data This function should be called when the simulation is over. More...
 
xbt_dynar_t SD_daxload (const char *filename)
 loads a DAX file describing a DAG More...
 
xbt_dynar_t SD_dotload (const char *filename)
 
xbt_dynar_t SD_dotload_with_sched (const char *filename)
 
xbt_dynar_t SD_PTG_dotload (const char *filename)
 

Function Documentation

§ SD_init()

void SD_init ( int *  argc,
char **  argv 
)

Initializes SD internal data.

This function must be called before any other SD function. Then you should call SD_create_environment().

Parameters
argcargument number
argvargument list
See also
SD_create_environment(), SD_exit()

§ SD_config()

void SD_config ( const char *  key,
const char *  value 
)

set a configuration variable

Do –help on any simgrid binary to see the list of currently existing configuration variables, and see Section Configure SimGrid.

Example: SD_config("host/model","default");

§ SD_create_environment()

void SD_create_environment ( const char *  platform_file)

Creates the environment.

The environment (i.e. the hosts and the links) is created with the data stored in the given XML platform file.

Parameters
platform_filename of an XML file describing the environment to create
See also
Hosts, Links

The XML file follows this DTD:

\include simgrid.dtd

Here is a small example of such a platform:

\include small_platform.xml

§ SD_simulate()

xbt_dynar_t SD_simulate ( double  how_long)

Launches the simulation.

The function will execute the SD_RUNNABLE runnable tasks. If how_long is positive, then the simulation will be stopped either when time reaches how_long or when a watch point is reached. A non-positive value for how_long means no time limit, in which case the simulation will be stopped either when a watch point is reached or when no more task can be executed. Then you can call SD_simulate() again.

Parameters
how_longmaximum duration of the simulation (a negative value means no time limit)
Returns
a dynar of SD_task_t whose state has changed.
See also
SD_task_schedule(), SD_task_watch()

§ SD_get_clock()

double SD_get_clock ( )

Returns the current clock, in seconds.

§ SD_exit()

void SD_exit ( )

Destroys all SD internal data This function should be called when the simulation is over.

Don't forget to destroy too.

See also
SD_init(), SD_task_destroy()

§ SD_daxload()

xbt_dynar_t SD_daxload ( const char *  filename)

loads a DAX file describing a DAG

See https://confluence.pegasus.isi.edu/display/pegasus/WorkflowGenerator for more details.

§ SD_dotload()

xbt_dynar_t SD_dotload ( const char *  filename)

§ SD_dotload_with_sched()

xbt_dynar_t SD_dotload_with_sched ( const char *  filename)

§ SD_PTG_dotload()

xbt_dynar_t SD_PTG_dotload ( const char *  filename)