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import contextlib
import unittest
import tempfile
from io import StringIO
import numpy as np
from tests.utils import create_dummy_data, preprocess_lm_data, train_language_model
try:
from pyarrow import plasma
from fairseq.data.plasma_utils import PlasmaView, PlasmaStore
PYARROW_AVAILABLE = True
except ImportError:
PYARROW_AVAILABLE = False
dummy_path = "dummy"
@unittest.skipUnless(PYARROW_AVAILABLE, "")
class TestPlasmaView(unittest.TestCase):
def setUp(self) -> None:
self.tmp_file = tempfile.NamedTemporaryFile() # noqa: P201
self.path = self.tmp_file.name
self.server = PlasmaStore.start(path=self.path, nbytes=10000)
self.client = plasma.connect(self.path, num_retries=10)
def tearDown(self) -> None:
self.client.disconnect()
self.tmp_file.close()
self.server.kill()
def test_two_servers_do_not_share_object_id_space(self):
data_server_1 = np.array([0, 1])
data_server_2 = np.array([2, 3])
server_2_path = self.path
with tempfile.NamedTemporaryFile() as server_1_path:
server = PlasmaStore.start(path=server_1_path.name, nbytes=10000)
arr1 = PlasmaView(
data_server_1, dummy_path, 1, plasma_path=server_1_path.name
)
assert len(arr1.client.list()) == 1
assert (arr1.array == data_server_1).all()
arr2 = PlasmaView(data_server_2, dummy_path, 1, plasma_path=server_2_path)
assert (arr2.array == data_server_2).all()
assert (arr1.array == data_server_1).all()
server.kill()
def test_hash_collision(self):
data_server_1 = np.array([0, 1])
data_server_2 = np.array([2, 3])
arr1 = PlasmaView(data_server_1, dummy_path, 1, plasma_path=self.path)
assert len(arr1.client.list()) == 1
arr2 = PlasmaView(data_server_2, dummy_path, 1, plasma_path=self.path)
assert len(arr1.client.list()) == 1
assert len(arr2.client.list()) == 1
assert (arr2.array == data_server_1).all()
# New hash key based on tuples
arr3 = PlasmaView(
data_server_2, dummy_path, (1, 12312312312, None), plasma_path=self.path
)
assert (
len(arr2.client.list()) == 2
), "No new object was created by using a novel hash key"
assert (
arr3.object_id in arr2.client.list()
), "No new object was created by using a novel hash key"
assert (
arr3.object_id in arr3.client.list()
), "No new object was created by using a novel hash key"
del arr3, arr2, arr1
@staticmethod
def _assert_view_equal(pv1, pv2):
np.testing.assert_array_equal(pv1.array, pv2.array)
def test_putting_same_array_twice(self):
data = np.array([4, 4, 4])
arr1 = PlasmaView(data, dummy_path, 1, plasma_path=self.path)
assert len(self.client.list()) == 1
arr1b = PlasmaView(
data, dummy_path, 1, plasma_path=self.path
) # should not change contents of store
arr1c = PlasmaView(
None, dummy_path, 1, plasma_path=self.path
) # should not change contents of store
assert len(self.client.list()) == 1
self._assert_view_equal(arr1, arr1b)
self._assert_view_equal(arr1, arr1c)
PlasmaView(
data, dummy_path, 2, plasma_path=self.path
) # new object id, adds new entry
assert len(self.client.list()) == 2
new_client = plasma.connect(self.path)
assert len(new_client.list()) == 2 # new client can access same objects
assert isinstance(arr1.object_id, plasma.ObjectID)
del arr1b
del arr1c
def test_plasma_store_full_raises(self):
with tempfile.NamedTemporaryFile() as new_path:
server = PlasmaStore.start(path=new_path.name, nbytes=10000)
with self.assertRaises(plasma.PlasmaStoreFull):
# 2000 floats is more than 2000 bytes
PlasmaView(
np.random.rand(10000, 1), dummy_path, 1, plasma_path=new_path.name
)
server.kill()
def test_object_id_overflow(self):
PlasmaView.get_object_id("", 2 ** 21)
def test_training_lm_plasma(self):
with contextlib.redirect_stdout(StringIO()):
with tempfile.TemporaryDirectory("test_transformer_lm") as data_dir:
create_dummy_data(data_dir)
preprocess_lm_data(data_dir)
train_language_model(
data_dir,
"transformer_lm",
["--use-plasma-view", "--plasma-path", self.path],
run_validation=True,
)
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