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[Enhance] Enable full precision training on Ascend NPU (#1109)

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Yinlei Sun 2023-05-06 17:17:32 +08:00 committed by GitHub
parent 6cd7a43a7f
commit fed0e3821a
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3 changed files with 16 additions and 6 deletions
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6
mmengine/device/__init__.py
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@ -1,8 +1,10 @@
# Copyright (c) OpenMMLab. All rights reserved.
from .utils import (get_device, get_max_cuda_memory, is_cuda_available,
is_mlu_available, is_mps_available, is_npu_available)
is_mlu_available, is_mps_available, is_npu_available,
is_npu_support_full_precision)
__all__ = [
'get_max_cuda_memory', 'get_device', 'is_cuda_available',
'is_mlu_available', 'is_mps_available', 'is_npu_available'
'is_mlu_available', 'is_mps_available', 'is_npu_available',
'is_npu_support_full_precision'
]

8
mmengine/device/utils.py
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@ -6,6 +6,7 @@ import torch
try:
import torch_npu # noqa: F401
import torch_npu.npu.utils as npu_utils
# Enable operator support for dynamic shape and
# binary operator support on the NPU.
@ -62,6 +63,13 @@ def is_mps_available() -> bool:
return hasattr(torch.backends, 'mps') and torch.backends.mps.is_available()
def is_npu_support_full_precision() -> bool:
"""Returns True if npu devices support full precision training."""
version_of_support_full_precision = 220
return IS_NPU_AVAILABLE and npu_utils.get_soc_version(
) >= version_of_support_full_precision
DEVICE = 'cpu'
if is_npu_available():
DEVICE = 'npu'

8
mmengine/optim/optimizer/builder.py
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@ -7,7 +7,7 @@ import torch
import torch.nn as nn
from mmengine.config import Config, ConfigDict
from mmengine.device import is_npu_available
from mmengine.device import is_npu_available, is_npu_support_full_precision
from mmengine.registry import OPTIM_WRAPPER_CONSTRUCTORS, OPTIMIZERS
from .optimizer_wrapper import OptimWrapper
@ -128,9 +128,9 @@ def build_optim_wrapper(model: nn.Module,
paramwise_cfg = optim_wrapper_cfg.pop('paramwise_cfg', None)
# Since the current generation of NPU(Ascend 910) only supports
# mixed precision training, here we turn on mixed precision by default
# on the NPU to make the training normal
if is_npu_available():
# mixed precision training, here we turn on mixed precision
# to make the training normal
if is_npu_available() and not is_npu_support_full_precision():
optim_wrapper_cfg['type'] = 'AmpOptimWrapper'
optim_wrapper_constructor = OPTIM_WRAPPER_CONSTRUCTORS.build(