function Master(...) 

  simgrid.info("Hello from lua, I'm the master")
  for i, v in ipairs(arg) do
    simgrid.info("Got "..v)
  end

  local nb_task = arg[1]
  local comp_size = arg[2]
  local comm_size = arg[3]
  local slave_count = arg[4]

  if #arg ~= 4 then
    error("Argc should be 4")
  end
  simgrid.info("Argc=" .. (#arg) .. " (should be 4)")

  -- Dispatch the tasks

  for i = 1, nb_task do
    local tk = simgrid.Task.new("Task "..i, comp_size, comm_size)
    local task_name = simgrid.Task.name(tk)
    local alias = "slave " .. (i % slave_count)
    simgrid.info("Master sending  '" .. task_name .. "' To '" .. alias .."'")
    simgrid.Task.send(tk,alias) -- C user data set to NULL
    simgrid.info("Master done sending '".. task_name .. "' To '" .. alias .."'")
  end

  -- Sending Finalize Message To Others

  simgrid.info("Master: All tasks have been dispatched. Let's tell everybody the computation is over.")
  for i = 0, slave_count - 1 do
    local alias = "slave " .. i
    simgrid.info("Master: sending finalize to " .. alias)
    local finalize = simgrid.Task.new("finalize", comp_size, comm_size)
    simgrid.Task.send(finalize, alias)
  end
  simgrid.info("Master: Everything's done.")
end -- Master