SimGrid 3.7.1
Scalable simulation of distributed systems
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Functions for creating the environment and launching the simulation. More...
Functions | |
void | SD_init (int *argc, char **argv) |
Initialises SD internal data. | |
void | SD_application_reinit (void) |
Reinits the application part of the simulation (experimental feature) | |
void | SD_create_environment (const char *platform_file) |
Creates the environment. | |
void | SD_load_environment_script (const char *script_file) |
load script file | |
xbt_dynar_t | SD_simulate (double how_long) |
Launches the simulation. | |
double | SD_get_clock (void) |
Returns the current clock. | |
void | SD_exit (void) |
Destroys all SD internal data. | |
xbt_dynar_t | SD_daxload (const char *filename) |
loads a DAX file describing a DAG | |
xbt_dynar_t | SD_dotload (const char *filename) |
loads a DOT file describing a DAG |
Functions for creating the environment and launching the simulation.
This section describes the functions for initialising SimDag, launching the simulation and exiting SimDag.
void SD_init | ( | int * | argc, |
char ** | argv | ||
) |
Initialises SD internal data.
This function must be called before any other SD function. Then you should call SD_create_environment().
argc | argument number |
argv | argument list |
void SD_application_reinit | ( | void | ) |
Reinits the application part of the simulation (experimental feature)
This function allows you to run several simulations on the same platform by resetting the part describing the application.
void SD_create_environment | ( | const char * | platform_file | ) |
Creates the environment.
The environment (i.e. the workstations and the links) is created with the data stored in the given XML platform file.
platform_file | name of an XML file describing the environment to create |
The XML file follows this DTD:
<!-- Small DTD for SURF based tools. --> <!ELEMENT platform ((config|random)*,(include|cluster|peer|AS|trace|trace_connect)*,(process)*)> <!ATTLIST platform version CDATA "0.0"> <!ELEMENT include (include|cluster|peer|AS|trace|trace_connect)*> <!ATTLIST include file CDATA #REQUIRED> <!ELEMENT trace (#PCDATA)> <!ATTLIST trace id CDATA #REQUIRED> <!ATTLIST trace file CDATA ""> <!ATTLIST trace periodicity CDATA #REQUIRED> <!ELEMENT random (prop*)> <!ATTLIST random id CDATA #REQUIRED> <!ATTLIST random min CDATA #REQUIRED> <!ATTLIST random max CDATA #REQUIRED> <!ATTLIST random mean CDATA #REQUIRED> <!ATTLIST random std_deviation CDATA #REQUIRED> <!ATTLIST random seed CDATA "2147483647"> <!ATTLIST random radical CDATA ""> <!ATTLIST random generator (DRAND48|RAND|RNGSTREAM|NONE) "DRAND48"> <!ELEMENT trace_connect EMPTY> <!ATTLIST trace_connect kind (HOST_AVAIL|POWER|LINK_AVAIL|BANDWIDTH|LATENCY) "HOST_AVAIL"> <!ATTLIST trace_connect trace CDATA #REQUIRED> <!ATTLIST trace_connect element CDATA #REQUIRED> <!ELEMENT AS (((AS|include|storage_type|storage|link|cluster|peer|trace|trace_connect)*,(ASroute|trace|trace_connect|bypassASroute)*,(trace|trace_connect)*)|((include|storage_type|storage|host|router|link|trace|trace_connect)*,(route|trace|trace_connect|bypassRoute)*))> <!ATTLIST AS id CDATA #REQUIRED> <!ATTLIST AS routing CDATA #REQUIRED> <!ELEMENT storage_type (prop*)> <!ATTLIST storage_type id CDATA #REQUIRED> <!ATTLIST storage_type model CDATA #REQUIRED> <!ATTLIST storage_type content CDATA "0"> <!ELEMENT storage (prop*)> <!ATTLIST storage id CDATA #REQUIRED> <!ATTLIST storage typeId CDATA #REQUIRED> <!ELEMENT mount EMPTY> <!ATTLIST mount id CDATA #REQUIRED> <!ATTLIST mount name CDATA #REQUIRED> <!ELEMENT mstorage EMPTY> <!ATTLIST mstorage typeId CDATA #REQUIRED> <!ATTLIST mstorage name CDATA #REQUIRED> <!ELEMENT host (prop|mount|mstorage)*> <!ATTLIST host id CDATA #REQUIRED> <!ATTLIST host power CDATA #REQUIRED> <!ATTLIST host core CDATA "1"> <!ATTLIST host availability CDATA "1.0"> <!ATTLIST host availability_file CDATA ""> <!ATTLIST host state (ON|OFF) "ON"> <!ATTLIST host state_file CDATA ""> <!ATTLIST host coordinates CDATA ""> <!ELEMENT cluster EMPTY> <!ATTLIST cluster id CDATA #REQUIRED> <!ATTLIST cluster prefix CDATA #REQUIRED> <!ATTLIST cluster suffix CDATA #REQUIRED> <!ATTLIST cluster radical CDATA #REQUIRED> <!ATTLIST cluster power CDATA #REQUIRED> <!ATTLIST cluster core CDATA "1"> <!ATTLIST cluster bw CDATA #REQUIRED> <!ATTLIST cluster lat CDATA #REQUIRED> <!ATTLIST cluster sharing_policy (SHARED|FULLDUPLEX|FATPIPE) "FULLDUPLEX"> <!ATTLIST cluster bb_bw CDATA ""> <!ATTLIST cluster bb_lat CDATA ""> <!ATTLIST cluster bb_sharing_policy (SHARED|FATPIPE) "SHARED"> <!ATTLIST cluster availability_file CDATA ""> <!ATTLIST cluster state_file CDATA ""> <!ATTLIST cluster router_id CDATA ""> <!ELEMENT peer EMPTY> <!ATTLIST peer id CDATA #REQUIRED> <!ATTLIST peer power CDATA #REQUIRED> <!ATTLIST peer bw_in CDATA #REQUIRED> <!ATTLIST peer bw_out CDATA #REQUIRED> <!ATTLIST peer lat CDATA #REQUIRED> <!ATTLIST peer coordinates CDATA ""> <!ATTLIST peer availability_file CDATA ""> <!ATTLIST peer state_file CDATA ""> <!ELEMENT router EMPTY> <!ATTLIST router id CDATA #REQUIRED> <!ATTLIST router coordinates CDATA ""> <!ELEMENT link (prop*)> <!ATTLIST link id CDATA #REQUIRED> <!ATTLIST link bandwidth CDATA #REQUIRED> <!ATTLIST link bandwidth_file CDATA ""> <!ATTLIST link latency CDATA "0.0"> <!ATTLIST link latency_file CDATA ""> <!ATTLIST link state (ON|OFF) "ON"> <!ATTLIST link state_file CDATA ""> <!ATTLIST link sharing_policy (SHARED|FATPIPE|FULLDUPLEX) "SHARED"> <!ELEMENT route (link_ctn*)> <!ATTLIST route src CDATA #REQUIRED> <!ATTLIST route dst CDATA #REQUIRED> <!ATTLIST route symmetrical (YES|NO) "YES"> <!ELEMENT ASroute (link_ctn*)> <!ATTLIST ASroute src CDATA #REQUIRED> <!ATTLIST ASroute dst CDATA #REQUIRED> <!ATTLIST ASroute gw_src CDATA #REQUIRED> <!ATTLIST ASroute gw_dst CDATA #REQUIRED> <!ATTLIST ASroute symmetrical (YES|NO) "YES"> <!ELEMENT link_ctn EMPTY> <!ATTLIST link_ctn id CDATA #REQUIRED> <!ATTLIST link_ctn direction (UP|DOWN|NONE) "NONE"> <!ELEMENT bypassRoute (link_ctn*)> <!ATTLIST bypassRoute src CDATA #REQUIRED> <!ATTLIST bypassRoute dst CDATA #REQUIRED> <!ELEMENT bypassASroute (link_ctn*)> <!ATTLIST bypassASroute src CDATA #REQUIRED> <!ATTLIST bypassASroute dst CDATA #REQUIRED> <!ATTLIST bypassASroute gw_src CDATA #REQUIRED> <!ATTLIST bypassASroute gw_dst CDATA #REQUIRED> <!ELEMENT process ((argument|prop)*)> <!ATTLIST process host CDATA #REQUIRED> <!ATTLIST process function CDATA #REQUIRED> <!ATTLIST process start_time CDATA "-1.0"> <!ATTLIST process kill_time CDATA "-1.0"> <!ELEMENT argument EMPTY> <!ATTLIST argument value CDATA #REQUIRED> <!ELEMENT config (prop*)> <!ATTLIST config id CDATA ""> <!ELEMENT prop EMPTY> <!ATTLIST prop id CDATA #REQUIRED> <!-- <!ATTLIST prop key CDATA #REQUIRED> --> <!ATTLIST prop value CDATA #REQUIRED>
Here is a small example of such a platform:
<?xml version='1.0'?> <!DOCTYPE platform SYSTEM "http://simgrid.gforge.inria.fr/simgrid.dtd"> <platform version="3"> <AS id="AS0" routing="Full"> <!-- ljlkj --> <host id="Tremblay" power="98095000"/> <host id="Jupiter" power="76296000"/> <host id="Fafard" power="76296000"/> <host id="Ginette" power="48492000"/> <host id="Bourassa" power="48492000"/> <link id="6" bandwidth="41279125" latency="5.9904e-05"/> <link id="11" bandwidth="252750" latency="0.00570455"/> <link id="3" bandwidth="34285625" latency="0.000514433"/> <link id="7" bandwidth="11618875" latency="0.00018998"/> <link id="9" bandwidth="7209750" latency="0.001461517"/> <link id="12" bandwidth="1792625" latency="0.007877863"/> <link id="2" bandwidth="118682500" latency="0.000136931"/> <link id="8" bandwidth="8158000" latency="0.000270544"/> <link id="1" bandwidth="34285625" latency="0.000514433"/> <link id="4" bandwidth="10099625" latency="0.00047978"/> <link id="0" bandwidth="41279125" latency="5.9904e-05"/> <link id="10" bandwidth="4679750" latency="0.000848712"/> <link id="5" bandwidth="27946250" latency="0.000278066"/> <link id="loopback" bandwidth="498000000" latency="0.000015" sharing_policy="FATPIPE"/> <route src="Tremblay" dst="Tremblay"><link_ctn id="loopback"/></route> <route src="Jupiter" dst="Jupiter"><link_ctn id="loopback"/></route> <route src="Fafard" dst="Fafard"><link_ctn id="loopback"/></route> <route src="Ginette" dst="Ginette"><link_ctn id="loopback"/></route> <route src="Bourassa" dst="Bourassa"><link_ctn id="loopback"/></route> <route src="Tremblay" dst="Jupiter"> <link_ctn id="9"/> </route> <route src="Tremblay" dst="Fafard"> <link_ctn id="4"/><link_ctn id="3"/><link_ctn id="2"/><link_ctn id="0"/><link_ctn id="1"/><link_ctn id="8"/> </route> <route src="Tremblay" dst="Ginette"> <link_ctn id="4"/><link_ctn id="3"/><link_ctn id="5"/> </route> <route src="Tremblay" dst="Bourassa"> <link_ctn id="4"/><link_ctn id="3"/><link_ctn id="2"/><link_ctn id="0"/><link_ctn id="1"/><link_ctn id="6"/><link_ctn id="7"/> </route> <route src="Jupiter" dst="Fafard"> <link_ctn id="9"/><link_ctn id="4"/><link_ctn id="3"/><link_ctn id="2"/><link_ctn id="0"/><link_ctn id="1"/><link_ctn id="8"/> </route> <route src="Jupiter" dst="Ginette"> <link_ctn id="9"/><link_ctn id="4"/><link_ctn id="3"/><link_ctn id="5"/> </route> <route src="Jupiter" dst="Bourassa"> <link_ctn id="9"/><link_ctn id="4"/><link_ctn id="3"/><link_ctn id="2"/><link_ctn id="0"/><link_ctn id="1"/><link_ctn id="6"/><link_ctn id="7"/> </route> <route src="Fafard" dst="Ginette"> <link_ctn id="8"/><link_ctn id="1"/><link_ctn id="0"/><link_ctn id="2"/><link_ctn id="5"/> </route> <route src="Fafard" dst="Bourassa"> <link_ctn id="8"/><link_ctn id="6"/><link_ctn id="7"/> </route> <route src="Ginette" dst="Bourassa"> <link_ctn id="5"/><link_ctn id="2"/><link_ctn id="0"/><link_ctn id="1"/><link_ctn id="6"/><link_ctn id="7"/> </route> </AS> </platform>
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 nonpositive 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.
how_long | maximum duration of the simulation (a negative value means no time limit) |
double SD_get_clock | ( | void | ) |
Returns the current clock.
void SD_exit | ( | void | ) |
Destroys all SD internal data.
This function should be called when the simulation is over. Don't forget also to destroy the tasks.
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.
xbt_dynar_t SD_dotload | ( | const char * | filename | ) |
loads a DOT file describing a DAG
See http://www.graphviz.org/doc/info/lang.html for more details. To obtain information about transfers and tasks, two attributes are required : size on task (execution time in Flop) and size on edge (the amount of data transfer in bit). if they aren't here, there choose to be equal to zero.
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The version of SimGrid documented here is v3.7.1. Documentation of other versions can be found in their respective archive files (directory doc/html). |
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