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cde7fe4 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | # Copyright (c) 2025, NVIDIA CORPORATION. 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.
import contextlib
# @akoumparouli: use a context manager that saves/restores gbs/mbs when using
# reconfigure_num_microbatches_calculator to avoid interference between tests.
@contextlib.contextmanager
def reconfigure_num_microbatches_calculator_manager(*args, **kwargs):
import megatron.core.num_microbatches_calculator as mb_calc
# Store current mbs, gbs values
if not mb_calc._GLOBAL_NUM_MICROBATCHES_CALCULATOR is None:
_mbs = mb_calc.get_micro_batch_size()
_gbs = mb_calc.get_current_global_batch_size()
# use user's settings
mb_calc.reconfigure_num_microbatches_calculator(*args, **kwargs)
else:
_mbs, _gbs = 1, 1
try:
# run user's code
yield
# @akoumparouli: no catch
finally:
# restore old mbs, gbs
if not mb_calc._GLOBAL_NUM_MICROBATCHES_CALCULATOR is None:
mb_calc.reconfigure_num_microbatches_calculator(0, None, _gbs, _mbs, data_parallel_size=1)
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