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#!/usr/bin/env python3
# Owner(s): ["oncall: r2p"]
# Copyright (c) Facebook, Inc. and its affiliates.
# All rights reserved.
#
# This source code is licensed under the BSD-style license found in the
# LICENSE file in the root directory of this source tree.
import datetime
from multiprocessing.pool import ThreadPool
from typing import List
from unittest import mock
import torch.distributed as dist
import torch.distributed.elastic.utils.store as store_util
from torch.distributed.elastic.utils.logging import get_logger
from torch.testing._internal.common_utils import run_tests, TestCase
class MockStore:
_TEST_TIMEOUT = 1234
def __init__(self) -> None:
self.ops = []
def set_timeout(self, timeout: float) -> None:
self.ops.append(("set_timeout", timeout))
@property
def timeout(self) -> datetime.timedelta:
self.ops.append(("timeout",))
return datetime.timedelta(seconds=self._TEST_TIMEOUT)
def set(self, key: str, value: str) -> None:
self.ops.append(("set", key, value))
def get(self, key: str) -> str:
self.ops.append(("get", key))
return "value"
def multi_get(self, keys: List[str]) -> List[str]:
self.ops.append(("multi_get", keys))
return ["value"] * len(keys)
def add(self, key: str, val: int) -> int:
self.ops.append(("add", key, val))
return 3
def wait(self, keys: List[str]) -> None:
self.ops.append(("wait", keys))
class StoreUtilTest(TestCase):
def test_get_all_rank_0(self):
world_size = 3
store = MockStore()
store_util.get_all(store, 0, "test/store", world_size)
self.assertListEqual(
store.ops,
[
("multi_get", ["test/store0", "test/store1", "test/store2"]),
("add", "test/store/finished/num_members", 1),
("set", "test/store/finished/last_member", "<val_ignored>"),
("wait", ["test/store/finished/last_member"]),
],
)
def test_get_all_rank_n(self):
store = MockStore()
world_size = 3
store_util.get_all(store, 1, "test/store", world_size)
self.assertListEqual(
store.ops,
[
("multi_get", ["test/store0", "test/store1", "test/store2"]),
("add", "test/store/finished/num_members", 1),
("set", "test/store/finished/last_member", "<val_ignored>"),
],
)
def test_synchronize(self):
store = MockStore()
data = b"data0"
store_util.synchronize(store, data, 0, 3, key_prefix="test/store")
self.assertListEqual(
store.ops,
[
("timeout",),
("set_timeout", datetime.timedelta(seconds=300)),
("set", "test/store0", data),
("multi_get", ["test/store0", "test/store1", "test/store2"]),
("add", "test/store/finished/num_members", 1),
("set", "test/store/finished/last_member", "<val_ignored>"),
("wait", ["test/store/finished/last_member"]),
("set_timeout", datetime.timedelta(seconds=store._TEST_TIMEOUT)),
],
)
def test_synchronize_hash_store(self) -> None:
N = 4
store = dist.HashStore()
def f(i: int):
return store_util.synchronize(
store, f"data{i}", i, N, key_prefix="test/store"
)
with ThreadPool(N) as pool:
out = pool.map(f, range(N))
self.assertListEqual(out, [[f"data{i}".encode() for i in range(N)]] * N)
def test_barrier(self):
store = MockStore()
store_util.barrier(store, 3, key_prefix="test/store")
self.assertListEqual(
store.ops,
[
("timeout",),
("set_timeout", datetime.timedelta(seconds=300)),
("add", "test/store/num_members", 1),
("set", "test/store/last_member", "<val_ignored>"),
("wait", ["test/store/last_member"]),
("set_timeout", datetime.timedelta(seconds=store._TEST_TIMEOUT)),
],
)
def test_barrier_timeout_rank_tracing(self):
N = 3
store = dist.HashStore()
def run_barrier_for_rank(i: int):
try:
store_util.barrier(
store,
N,
key_prefix="test/store",
barrier_timeout=0.1,
rank=i,
rank_tracing_decoder=lambda x: f"Rank {x} host",
trace_timeout=0.01,
)
except Exception as e:
return str(e)
return ""
with ThreadPool(N - 1) as pool:
outputs: List[str] = pool.map(run_barrier_for_rank, range(N - 1))
self.assertTrue(any("missing_ranks=[Rank 2 host]" in msg for msg in outputs))
self.assertTrue(
any(
"check rank 0 (Rank 0 host) for missing rank info" in msg
for msg in outputs
)
)
def test_barrier_timeout_operations(self):
import torch
DistStoreError = torch._C._DistStoreError
N = 3
store = MockStore()
# rank 0
with mock.patch.object(store, "wait") as wait_mock:
wait_mock.side_effect = [DistStoreError("test"), None, None]
with self.assertRaises(DistStoreError):
store_util.barrier(
store,
N,
key_prefix="test/store",
barrier_timeout=1,
rank=0,
rank_tracing_decoder=lambda x: f"Rank {x} host",
trace_timeout=0.1,
)
self.assertListEqual(
store.ops,
[
("timeout",),
("set_timeout", datetime.timedelta(seconds=1)),
("add", "test/store/num_members", 1),
("set", "test/store/last_member", "<val_ignored>"),
# wait for last member is mocked
("set", "test/store0/TRACE", "<val_ignored>"),
# wait for each rank is mocked
("set", "test/store/TRACING_GATE", "<val_ignored>"),
],
)
# rank 1
with mock.patch.object(store, "wait") as wait_mock:
store.ops = []
wait_mock.side_effect = [
DistStoreError("test"),
None,
]
with self.assertRaises(DistStoreError):
store_util.barrier(
store,
N,
key_prefix="test/store",
barrier_timeout=1,
rank=1,
rank_tracing_decoder=lambda x: f"Rank {x} host",
trace_timeout=0.1,
)
self.assertListEqual(
store.ops,
[
("timeout",),
("set_timeout", datetime.timedelta(seconds=1)),
("add", "test/store/num_members", 1),
("set", "test/store/last_member", "<val_ignored>"),
("set", "test/store1/TRACE", "<val_ignored>"),
# wait for gate is mocked
],
)
def test_barrier_hash_store(self) -> None:
N = 4
store = dist.HashStore()
def f(i: int):
store_util.barrier(store, N, key_prefix="test/store")
with ThreadPool(N) as pool:
out = pool.map(f, range(N))
self.assertEqual(out, [None] * N)
class UtilTest(TestCase):
def test_get_logger_different(self):
logger1 = get_logger("name1")
logger2 = get_logger("name2")
self.assertNotEqual(logger1.name, logger2.name)
def test_get_logger(self):
logger1 = get_logger()
self.assertEqual(__name__, logger1.name)
def test_get_logger_none(self):
logger1 = get_logger(None)
self.assertEqual(__name__, logger1.name)
def test_get_logger_custom_name(self):
logger1 = get_logger("test.module")
self.assertEqual("test.module", logger1.name)
if __name__ == "__main__":
run_tests()
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