1 /*! \page use Using SimGrid
3 SimGrid comes with many examples provided in the examples/ directory. Those examples are described in section \ref MSG_examples . Those examples are commented and should be easy to understand. for a first step into SimGrid we also provide some more detailed examples in the sections below.
6 You should also check our online <a href="http://simgrid.gforge.inria.fr/tutorials.html"> tutorial section</a> that contains a generic tutorial about using SimGrid.
10 \section using_msg Using MSG
12 You should also check our online <a href="http://simgrid.gforge.inria.fr/tutorials.html"> tutorial section</a> that contains a dedicated tutorial.
17 Here are some examples on how to use MSG, the most used API.
20 MSG comes with an extensive set of examples. It is sometimes difficult
21 to find the one you need. This list aims at helping you finding the
22 example from which you can learn what you want to.
24 \subsection MSG_ex_basics Basic examples and features
26 \subsubsection MSG_ex_asynchronous_communications Asynchronous communications
29 Simulation of asynchronous communications between a sender and a receiver using a realistic platform and
30 an external description of the deployment.
32 - \ref MSG_ext_icomms_code
33 - \ref MSG_ext_icomms_preliminary
34 - \ref MSG_ext_icomms_Sender
35 - \ref MSG_ext_icomms_Receiver
36 - \ref MSG_ext_icomms_core
37 - \ref MSG_ext_icomms_Main
38 - \ref MSG_ext_icomms_fct_Waitall
39 - \ref MSG_ext_icomms_fct_Waitany
43 \dontinclude msg/icomms/peer.c
45 \paragraph MSG_ext_icomms_code Code of the application
47 \paragraph MSG_ext_icomms_preliminary Preliminary declarations
49 \until Sender function
51 \paragraph MSG_ext_icomms_Sender Sender function
53 The sender send to a receiver an asynchronous message with the function "MSG_task_isend()". Cause this function is non-blocking
54 we have to make "MSG_comm_test()" to know if the communication is finished for finally destroy it with function "MSG_comm_destroy()".
55 It also available to "make MSG_comm_wait()" which make both of them.
57 C style arguments (argc/argv) are interpreted as:
58 - the number of tasks to distribute
59 - the computation size of each task
60 - the size of the files associated to each task
61 - a list of host that will accept those tasks.
62 - the time to sleep at the beginning of the function
63 - This time defined the process sleep time
64 if time = 0 use of MSG_comm_wait()
65 if time > 0 use of MSG_comm_test()
68 \until Receiver function
70 \paragraph MSG_ext_icomms_Receiver Receiver function
72 This function executes tasks when it receives them. As the receiving is asynchronous we have to test the communication to know
73 if it is completed or not with "MSG_comm_test()" or wait for the completion "MSG_comm_wait()".
75 C style arguments (argc/argv) are interpreted as:
76 - the id to use for received the communication.
77 - the time to sleep at the beginning of the function
78 - This time defined the process sleep time
79 if time = 0 use of MSG_comm_wait()
80 if time > 0 use of MSG_comm_test()
84 \paragraph MSG_ext_icomms_core Simulation core
86 This function is the core of the simulation and is divided only into 3 parts
87 thanks to MSG_create_environment() and MSG_launch_application().
88 -# Simulation settings : MSG_create_environment() creates a realistic
90 -# Application deployment : create the processes on the right locations with
91 MSG_launch_application()
92 -# The simulation is run with #MSG_main()
95 - <i>platform_file</i>: the name of a file containing an valid surfxml platform description.
96 - <i>application_file</i>: the name of a file containing a valid surfxml application description
100 \paragraph MSG_ext_icomms_Main Main function
102 This initializes MSG, runs a simulation, and free all data-structures created by MSG.
106 \dontinclude msg/icomms/peer2.c
108 \paragraph MSG_ext_icomms_fct_Waitall Waitall function for sender
110 The use of this function permit to send all messages and wait for the completion of all in one time.
112 \skipline Sender function
115 \paragraph MSG_ext_icomms_fct_Waitany Waitany function
117 The MSG_comm_waitany() function return the place of the first message send or receive from a xbt_dynar_t table.
119 \paragraph MSG_ext_icomms_fct_Waitany_sender From a sender
120 We can use this function to wait all sent messages.
121 \dontinclude msg/icomms/peer3.c
122 \skipline Sender function
125 \paragraph MSG_ext_icomms_fct_Waitany_receiver From a receiver
126 We can also wait for the arrival of all messages.
127 \dontinclude msg/icomms/peer3.c
128 \skipline Receiver function
129 \until end_of_receiver
131 \subsubsection MSG_ex_master_slave Basic Master/Slaves
133 Simulation of a master-slave application using a realistic platform
134 and an external description of the deployment.
136 \paragraph MSG_ex_ms_TOC Table of contents:
138 - \ref MSG_ext_ms_preliminary
139 - \ref MSG_ext_ms_master
140 - \ref MSG_ext_ms_slave
141 - \ref MSG_ext_ms_forwarder
142 - \ref MSG_ext_ms_core
143 - \ref MSG_ext_ms_main
144 - \ref MSG_ext_ms_helping
145 - \ref MSG_ext_ms_application
146 - \ref MSG_ext_ms_platform
150 \dontinclude msg/masterslave/masterslave_forwarder.c
153 \paragraph MSG_ext_ms_preliminary Preliminary declarations
159 \paragraph MSG_ext_ms_master Master code
161 This function has to be assigned to a msg_process_t that will behave as
162 the master. It should not be called directly but either given as a
163 parameter to #MSG_process_create() or registered as a public function
164 through #MSG_function_register() and then automatically assigned to a
165 process through #MSG_launch_application().
167 C style arguments (argc/argv) are interpreted as:
168 - the number of tasks to distribute
169 - the computation size of each task
170 - the size of the files associated to each task
171 - a list of host that will accept those tasks.
173 Tasks are dumbly sent in a round-robin style.
177 \paragraph MSG_ext_ms_slave Slave code
179 This function has to be assigned to a #msg_process_t that has to behave
180 as a slave. Just like the master fuction (described in \ref
181 MSG_ext_ms_master), it should not be called directly.
183 This function keeps waiting for tasks and executes them as it receives them.
187 \paragraph MSG_ext_ms_forwarder Forwarder code
189 This function has to be assigned to a #msg_process_t that has to behave
190 as a forwarder. Just like the master function (described in \ref
191 MSG_ext_ms_master), it should not be called directly.
193 C style arguments (argc/argv) are interpreted as a list of host that
194 will accept those tasks.
196 This function keeps waiting for tasks and dispathes them to its slaves.
198 \until end_of_forwarder
200 \paragraph MSG_ext_ms_core Simulation core
202 This function is the core of the simulation and is divided only into 3 parts
203 thanks to MSG_create_environment() and MSG_launch_application().
204 -# Simulation settings : MSG_create_environment() creates a realistic
206 -# Application deployment : create the processes on the right locations with
207 MSG_launch_application()
208 -# The simulation is run with #MSG_main()
211 - <i>platform_file</i>: the name of a file containing an valid surfxml platform description.
212 - <i>application_file</i>: the name of a file containing a valid surfxml application description
214 \until end_of_test_all
216 \paragraph MSG_ext_ms_main Main() function
218 This initializes MSG, runs a simulation, and free all data-structures created by MSG.
222 \subsubsection MSG_ext_ms_helping Helping files
224 \paragraph MSG_ext_ms_application Example of application file
226 \include msg/masterslave/deployment_masterslave.xml
228 \paragraph MSG_ext_ms_platform Example of platform file
230 \include msg/small_platform.xml
232 \section using_smpi Using SMPI
233 You should check our online <a href="http://simgrid.gforge.inria.fr/tutorials.html"> tutorial section</a> that contains a dedicated tutorial.
235 \section using_MC Using Model Checking
236 You should check our online <a href="http://simgrid.gforge.inria.fr/tutorials.html"> tutorial section</a> that contains a dedicated tutorial.
238 \section using_trace Using Trace
239 Check out the \ref tracing section.
241 You should check our online <a href="http://simgrid.gforge.inria.fr/tutorials.html"> tutorial section</a> that contains a dedicated tutorial.
243 \section using_simdag Using SimDag
244 You should check our online <a href="http://simgrid.gforge.inria.fr/tutorials.html"> tutorial section</a> that contains a dedicated tutorial.
246 \section using_simix Using SIMIX
247 You should check our online <a href="http://simgrid.gforge.inria.fr/tutorials.html"> tutorial section</a> that contains a dedicated tutorial.