Recompute upgrade #47985
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Recompute upgrade #47985
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你的PR提交成功，感谢你对开源项目的贡献! |
gongweibao
requested changes
Nov 23, 2022
| recompute without reentrant, that means use hook to implement the recompute function rather than re-entrant autograd. | ||
| """ | ||
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| if preserve_rng_state: |
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User can't use CPU or other XXPU?
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only support GPU to preserve rng state now.
| if tracer._amp_dtype == 'float16': | ||
| amp_dtype = 'float16' | ||
| elif tracer._amp_dtype in ('bfloat16', 'float32'): | ||
| amp_dtype = 'bfloat16' |
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auto_cast supports two dtypes: float16 and bfloat16.
| fwd_cuda_rng_state_tracker = ( | ||
| get_rng_state_tracker().get_states_tracker() | ||
| ) | ||
| tracer = framework._dygraph_tracer() |
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Are these functions all internal functions with _?
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yes, and only use this way to get tracer from python, the name of _dygraph_tracer is defined by framewark.
| @@ -13,6 +13,7 @@ | |||
| # limitations under the License. | |||
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| import paddle | |||
| import weakref | |||
| from paddle.fluid import core | |||
sljlp
reviewed
Dec 19, 2022
| from paddle.distributed.fleet.meta_parallel.parallel_layers.random import ( | ||
| get_rng_state_tracker, | ||
| ) | ||
| from paddle.framework import core, in_dygraph_mode | ||
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PR types
New features
PR changes
Others
Describe
【Recompute upgrade】:
in the past, there is just one PyLayer implementation of recompute, here , this PR adds other hook implementation of recompute.
【test】
【features】
A100 40G fleetx
【loss align】
