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# -*- coding: utf-8 -*-
# Copyright (C) 2015-2016 Martin Sandve Alnæs
#
# This file is part of DIJITSO.
#
# DIJITSO is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# DIJITSO is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with DIJITSO. If not, see <http://www.gnu.org/licenses/>.
import pytest
from dijitso.system import make_dirs
from dijitso.mpi import create_comms_and_role
@pytest.fixture()
def lib_dir0(comm):
# Fake some common and some shared libdirs
path = ".test_roles_%d" % (comm.rank,)
make_dirs(path)
return path
@pytest.fixture()
def lib_dir2(comm):
# Fake some common and some shared libdirs
path = ".test_roles_%d_of_2" % (comm.rank % 2,)
make_dirs(path)
return path
def test_role_root(comm, lib_dir2):
buildon = "root"
copy_comm, wait_comm, role = create_comms_and_role(comm, lib_dir2, buildon)
if comm.rank == 0:
expected_role = "builder"
elif wait_comm.rank == 0:
expected_role = "receiver"
else:
expected_role = "waiter"
assert role == expected_role
assert copy_comm is not None
assert wait_comm is not None
if role != "waiter":
assert copy_comm.size == min(comm.size, 2)
assert (comm.size // 2) <= wait_comm.size <= (comm.size // 2 + 1)
def test_role_node(comm, lib_dir2):
buildon = "node"
copy_comm, wait_comm, role = create_comms_and_role(comm, lib_dir2, buildon)
if comm.rank in (0, 1):
expected_role = "builder"
else:
expected_role = "waiter"
assert role == expected_role
assert copy_comm is None
assert wait_comm is not None
assert (comm.size // 2) <= wait_comm.size <= (comm.size // 2 + 1)
def test_role_process(comm, lib_dir0):
buildon = "process"
copy_comm, wait_comm, role = create_comms_and_role(comm, lib_dir0, buildon)
expected_role = "builder"
assert role == expected_role
assert copy_comm is None
assert wait_comm is None
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