cannot load FastLayerNorm from apex.contrib.layer_norm
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Description
Environment: Pytorch 21.12 from NGC
build APEX from source pip install -v --disable-pip-version-check --no-cache-dir --global-option="--cpp_ext" --global-option="--cuda_ext" ./
then in the script
from apex.contrib.layer_norm import FastLayerNorm
running report issue:
Traceback (most recent call last):
File "layernorm.py", line 14, in
from apex.contrib.layer_norm import FastLayerNorm
File "/workspace/apex/apex/contrib/layer_norm/init.py", line 1, in
from .layer_norm import FastLayerNorm
File "/workspace/apex/apex/contrib/layer_norm/layer_norm.py", line 5, in
import fast_layer_norm
ModuleNotFoundError: No module named 'fast_layer_norm'
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Research direction
Reproduce the reported import with the provided PyTorch 21.12 environment and APEX build command. Start with apex/contrib/layer_norm/init.py and apex/contrib/layer_norm/layer_norm.py, then inspect how the fast_layer_norm module is built and exposed. Done means the documented installation allows from apex.contrib.layer_norm import FastLayerNorm without ModuleNotFoundError.
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Assessment
- Tech stack
- python, pytorch
- Domain
- machine-learning
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100