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103 lines
3.3 KiB
Python
103 lines
3.3 KiB
Python
# Copyright 2023 The JAX Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the ific language governing permissions and
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# limitations under the License.
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from __future__ import annotations
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from typing import Union
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from jax._src.sharding import Sharding
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from jax._src.sharding_impls import AUTO as AutoSharding, is_auto
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from jax._src.lib import xla_client as xc
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class AutoLayout:
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def __repr__(self):
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return "AUTO"
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class DeviceLocalLayout:
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layout: xc.PjRtLayout
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AUTO = AutoLayout()
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def __init__(self, layout: xc.PjRtLayout):
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self._layout = layout
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self._layout_str = str(self._layout)
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def __repr__(self):
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return f'DeviceLocalLayout({self._layout_str})'
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def __hash__(self):
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return hash(self._layout)
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def __eq__(self, other):
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if not isinstance(other, DeviceLocalLayout):
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return False
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return self._layout == other._layout
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def _to_xla_layout(self) -> str:
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return self._layout_str
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LayoutOptions = Union[DeviceLocalLayout, None, AutoLayout]
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ShardingOptions = Union[Sharding, None, AutoSharding]
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class Layout:
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__slots__ = ['device_local_layout', 'sharding']
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def __init__(self, device_local_layout: LayoutOptions = None,
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sharding: ShardingOptions = None):
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# If layout is concrete and sharding is not, error.
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if (isinstance(device_local_layout, DeviceLocalLayout) and
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(sharding is None or is_auto(sharding))):
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raise ValueError(
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'Sharding has to be concrete when layout is of type'
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f' {type(device_local_layout)}. Please pass a'
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' `jax.sharding.NamedSharding`, `jax.sharding.PositionalSharding` or'
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' `jax.sharding.SingleDeviceSharding` to the sharding argument. Got'
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f' sharding {sharding}'
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)
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if not isinstance(
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device_local_layout, (DeviceLocalLayout, type(None), AutoLayout)):
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raise TypeError(
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'Invalid value received for the device_local_layout argument.'
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' Expected values are `None`, `DeviceLocalLayout.AUTO` or an'
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f' instance of `DeviceLocalLayout`. Got {device_local_layout} of'
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f' type {type(device_local_layout)}'
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)
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if not isinstance(
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sharding, (Sharding, type(None), AutoSharding)):
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raise TypeError(
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'Invalid value received for the sharding argument. Expected values'
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' are `None`, `pjit.AUTO` or an instance of `jax.Sharding`. Got'
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f' {sharding} of type {type(sharding)}')
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self.device_local_layout = device_local_layout
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self.sharding = sharding
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def __repr__(self):
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return (f'Layout(device_local_layout={self.device_local_layout},'
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f' sharding={self.sharding})')
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def __hash__(self):
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return hash((self.device_local_layout, self.sharding))
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def __eq__(self, other):
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if not isinstance(other, Layout):
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return False
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return (self.device_local_layout == other.device_local_layout and
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self.sharding == other.sharding)
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