lua-mpi/run.lua at master · jzrake/lua-mpi · GitHub

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local MPI = require 'MPI'
local buffer = require 'buffer'

local rank = buffer.new_buffer(buffer.sizeof(buffer.int))
local size = buffer.new_buffer(buffer.sizeof(buffer.int))

MPI.Init()
MPI.Comm_rank(MPI.COMM_WORLD, rank)
MPI.Comm_size(MPI.COMM_WORLD, size)

local callback_types = {
   "Comm_copy_attr_function",
   "Comm_delete_attr_function",
   "Datarep_conversion_function",
   "Datarep_extent_function",
   "Grequest_cancel_function",
   "Grequest_free_function",
   "Grequest_query_function",
   "Type_copy_attr_function",
   "Type_delete_attr_function",
   "User_function",
   "Win_copy_attr_function",
   "Win_delete_attr_function",
}
for _,v in ipairs(callback_types) do
   local f = MPI[v]()
   local mt = debug.getregistry()["MPI::"..v]
   assert(debug.getmetatable(f) == mt)
end

local statuses = MPI.Status(100)
local requests = MPI.Request(100)

local comm = MPI.Comm()
assert(type(comm) == 'userdata')

assert(buffer.get_typed(rank, buffer.int, 0) == 0)
assert(buffer.get_typed(size, buffer.int, 0) == 1)

MPI.Finalize()
print(debug.getinfo(1).source, ": All tests passed")


local function example_function()
   local MPI = require 'MPI'
   local buffer = require 'buffer'

   local rank = buffer.new_buffer(buffer.sizeof(buffer.int))
   local size = buffer.new_buffer(buffer.sizeof(buffer.int))

   MPI.Init()
   MPI.Comm_rank(MPI.COMM_WORLD, rank)
   MPI.Comm_size(MPI.COMM_WORLD, size)

   print(buffer.get_typed(rank, buffer.int, 0))
   print(buffer.get_typed(size, buffer.int, 0))

   MPI.Finalize()
end