\htmlinclude .bindings.doc.toc
-\section bindings_start Available bindings
+\section bindings_binding_Java Java Binding
+<a href="http://simgrid.gforge.inria.fr/simgrid-java/1.0/doc/">Simgrid-Java documentation</a>.
+
+\section bindings_binding_Ruby Ruby Binding
+<a href="http://simgrid.gforge.inria.fr/simgrid-ruby/1.0/doc/">Simgrid-Ruby documentation</a>.
+
+\section bindings_binding_lua Lua Binding
-\subsection bindings_binding_lua Lua Binding
Most of Simgrid modules require a good level in C programming, since simgrid is used to be as standard C library.
- Sometime users prefer using some kind of « easy scripts » or a language easier to code with, for their works,
+ Sometime users prefer using some kind of “easy scripts” or a language easier to code with, for their works,
which avoid dealing with C errors, and sometime an important gain of time.
Besides Java Binding, Lua and Ruby bindings are available since version 3.4 of Simgrid
for MSG Module, and we are currenlty working on bindings for other modules.
-\subsubsection bindings_binding_lua_about What is lua ?
+\subsection bindings_binding_lua_about What is lua ?
Lua is a lightweight, reflective, imperative and functional programming language,
designed as a scripting language with extensible semantics as a primary goal (see official web site <a href="http://www.lua.org">here</a>).
\subsubsection bindings_binding_lua_why Why lua ?
- Coding functions coresponding to each process
- loading the platforme/deployment XML file that describe the environment of simulation
- and … Running the Simulation.
-
+
\dontinclude lua/masterslave/master.lua
-\subsubsection bindings_binding_lua_example_master_slave Master/Slave Example
+\subsection bindings_binding_lua_example_master_slave Master/Slave Example
\li Master Code
\until end_of_master
-we mainly use simgrid.Task.new(task_name,computation_size,communication_size) to create our MSG Task,
+we mainly use simgrid.Task.new(task_name,computation_size,communication_size) to create our MSG Task,
then simgrid.Task.send(task,alias) to send it.
-we use also simgrid.Task.name(task), to get the task's name.
+we use also simgrid.Task.name(task), to get the task's name.
\dontinclude lua/masterslave/slave.lua
\li Slave Code
\li Set Environmenet and run application
\until simgrid.clean()
-\subsubsection bindings_binding_lua_example_data Exchanging Data
+\subsection bindings_binding_lua_example_data Exchanging Data
You can also exchange data between Process using lua. for that, you have to deal with lua task as a table,
since lua is based itself on a mechanism of tables,
so you can exchange any kind of data (tables, matrix, strings,…) between process via tasks.
\li Sender process
-\verbatim
+\verbatim
task = simgrid.Task.new("data_task",task_comp,task_comm);
task['matrix'] = my_matrix;
task['table'] = my_table;
\endverbatim
Note that in lua, both sender and receiver share the same lua task.
So that the receiver could joint data directly on the received task without sending it back.
- You can find a complet example (matrix multiplication case) in the file example/lua/mult_matrix.lua.
+ You can find a complet example (matrix multiplication case) in the file example/lua/mult_matrix.lua.
-\subsubsection bindings_binding_lua_example_bypass Bypass XML
+\subsection bindings_binding_lua_example_bypass Bypass XML
maybe you wonder if there is a way to bypass the XML files,
and describe your platform directly from the code, with lua bindings it's Possible !! how ?
We provide some additional (tricky?) functions in lua that allows you to set up your own platform without using the XML files
( this can be useful for large platforms, so a simple for loop will avoid you to deal with an annoying XML File ;) )
-
+
\li set Routing mode
\verbatim
...
\endverbatim
for each host you have to specify which route to choose to access to the rest of hosts connected in the grid.
-
+
\li Save platform
\verbatim
simgrid.register_platform();
simgrid.Host.setFunction("Fafard","Slave",1,{"2"});
simgrid.Host.setFunction("Ginette","Slave",1,{"3"});
\endverbatim
- you don't need to use a deployment XML file, thanks to simgrid.Host.setFunction(host_id,function,args_number,args_list)
+ you don't need to use a deployment XML file, thanks to simgrid.Host.setFunction(host_id,function,args_number,args_list)
you can associate functions for each host with arguments if needed .
\li
\verbatim
simgrid.register_application();
\endverbatim
-Yes, Here too you have to resgiter your application before running the simulation.
+Yes, Here too you have to register your application before running the simulation.
the full example is distributed in the file examples/lua/master_slave_bypass.lua
-\subsection bindings_binding_ruby Ruby Binding
-
-
-\subsubsection bindings_binding_ruby_simgrid Use Ruby in Simgrid
-Since v3.4, the use of <a href="http://ruby-lang.org">ruby</a> in simgrid is available for the MSG Module.
-you can find almost all MSG functionalities in Ruby code, that allows you to set up your environment, manage tasks between hosts and run the simulation.
-
-\subsubsection bindings_binding_ruby_example Master/Slave Ruby Application
-for each process method(master and slave in this example), you have to associate a ruby class, that should inherit from <i>MSG::Process</i> ruby class,
- with a 'main' function that describe the behaviour of the process during the simulation.
-\li required stuff
-\verbatim
-require 'simgrid'
-include MSG
-\endverbatim
-
-\li Master code
-\verbatim
-class Master < MSG::Process
- # main : that function that will be executed when running simulation
-
- def main(args) # args is an array containing arguments for function master
- size = args.size
- for i in 0..size-1
- MSG::info("args["+String(i)+"]="+args[i])
- end
-
- raise "Master needs 3 arguments" if size < 3
- numberOfTask = Integer(args[0])
- taskComputeSize = Float(args[1])
- taskCommunicationSize = Float(args[2])
- slaveCount = Integer(args[3])
-
- # Creates and sends the tasks
- for i in 0..numberOfTask-1
- task = Task.new("Task_"+ i.to_s, taskComputeSize , taskCommunicationSize);
- mailbox = "slave " + (i%slaveCount).to_s
- MSG::info("Master Sending "+ task.name + " to " + mailbox + " with Comput Size " +
- task.compSize.to_s)
- task.send(mailbox)
- MSG::info("Master Done Sending " + task.name + " to " + mailbox)
- end
-
- # Sending Finalize MSG::Tasks
- MSG::info("Master: All tasks have been dispatched. Let's tell everybody the computation is over.")
- for i in 0..slaveCount-1
- mailbox = "slave " + i.to_s
- finalize_task = Task.new("finalize",0,0)
- finalize_task.send(mailbox)
- end
- MSG::info("Master : Everything's Done")
- end
-end
-\endverbatim
-
-
-the class MSG::Task contains methods that allows the management of the native MSG tasks.
-in master ruby code we used :
- - <i>MSG::Task.new(task_name,compute_size,communication_size)</i> : to instanciate a new task.
- - <i>MSG::Task.send(mailbox)</i> : to send the task via a mailbox alias.
- - <i>MSG::Task.name</i> : to get the task's name.
-
-\li Slave code
-\verbatim
-class Slave < MSG::Process
-
- def main(args)
- mailbox = "slave " + args[0]
- for i in 0..args.size-1
- MSG::debug("args["+String(i)+"]="+args[i])
- end
-
- while true
- MSG::info("Slave '"+ mailbox +"' waiting for new task");
- task = Task.receive(mailbox)
- if (task.name == "finalize")
- break
- end
- task.execute
- MSG::info("Slave '" + mailbox + "' done executing task "+ task.name + ".")
- end
- MSG::info("I'm done, see you")
- end
-end
-\enverbatim
-to receive a task, we use the method <i>MSG::Task.receive(mailbox)</i> that return a MSG:Task object (received task).
-
-\li Main chunk
-
-\verbatim
-require 'simgrid'
-include MSG
-(...)
-
-if (ARGV.length == 2)
- MSG.createEnvironment(ARGV[0])
- MSG.deployApplication(ARGV[1])
-
-else
-
- MSG.createEnvironment("platform.xml")
- MSG.deployApplication("deploy.xml")
-end
-MSG.run
-puts "Simulation time : " + MSG.getClock.to_s
-MSG.exit
-\endverbatim
-
-- <i>MSG.createEnvironment(platform_file)</i> : set up the environment
-- <i>MSG.deployApplication(deployment_file)</i> : load the deployment file description.
-- <i>MSG.run</i> : run the simulation
-
-\subsubsection bindings_binding_ruby_data Exchanging data
-ruby bindings provides two ways to exchange data between ruby processes.
-\li MSG::Task.join & MSG::Task.data <br/>
-
- the MSG::Task class contains 2 methods that allows a data exchange between 2 process.
-
- -<i>MSG::Task.join</i> : makes possible to join any kind of ruby data within a task.
- \verbatim
- ...
- myTable = Array.new
- myTable <<1<<-2<<45<<67<<87<<76<<89<<56<<78<<3<<-4<<99
- # Creates and send Task With the Table inside
- task = MSG::Task.new("quicksort_task",taskComputeSize, taskCommunicationSize);
- task.join(myTable);
- ...
- task.send(mailbox);
- \endverbatim
- -<i>MSG::Task.data</i> : to access to the data contained into the task.
- \verbatim
- ...
- task = MSG::Task.receive(recv_mailbox.to_s)
- table = task.data
- quicksort(table,0,table.size-1)
- ...
- \endverbatim
-you can find a complet example illustrating the use of those methods in file /example/ruby/Quicksort.rb
-
-\li inheritence
-
- another 'object-oriented' way to do it, is to make your own 'task' class that inherit from MSG::Task ,
- and contains data you want to deal with, the only 'tricky' thing is that "the initializer" method has no effect !
-
- the use of some getter/setter methods would be the simple way to manage your data :)
- \verbatim
-class PingPongTask < MSG::Task
- # The initialize method has no effect
- @time
- def setTime(t)
- @time = t
- end
- def getTime()
- return @time
- end
-end
- \endverbatim
- you can find an example of use in file example/ruby/PingPong.rb
-
- */
\ No newline at end of file
+ */
