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test_timeline.py
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test_timeline.py
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# Copyright 2019 Uber Technologies, Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import tempfile
import time
import torch
import unittest
import warnings
import horovod.torch as hvd
from horovod.common.util import env
class TimelineTests(unittest.TestCase):
"""
Tests for ops in horovod.torch.
"""
def __init__(self, *args, **kwargs):
super(TimelineTests, self).__init__(*args, **kwargs)
warnings.simplefilter('module')
def test_timeline(self):
with tempfile.NamedTemporaryFile() as t:
with env(HOROVOD_TIMELINE=t.name, HOROVOD_TIMELINE_MARK_CYCLES='1'):
hvd.init()
# Perform a simple allreduce operation
hvd.allreduce(torch.tensor([1, 2, 3], dtype=torch.float32), name='test_allreduce')
# Wait for it to register in the timeline.
time.sleep(0.1)
if hvd.rank() == 0:
with open(t.name, 'r') as tf:
timeline_text = tf.read()
assert 'allreduce.test_allreduce' in timeline_text, timeline_text
assert 'NEGOTIATE_ALLREDUCE' in timeline_text, timeline_text
assert 'ALLREDUCE' in timeline_text, timeline_text
assert 'CYCLE_START' in timeline_text, timeline_text