Pillow SIMD Version Mismatch Error

#1

I followed the instructions for pillow-simd from the docs and setup my environment using the snippet below. It appears conda install -yc conda-forge libjpeg-turbo is currently installing pillow-6.1.0 and pip install pillow-simd is installing pillow-simd-6.0.0.post0, which is causing fastai import to fail.

conda install pytorch torchvision cudatoolkit=10.0 -c pytorch
conda install -c fastai fastai

conda uninstall -y --force pillow pil jpeg libtiff libjpeg-turbo
pip uninstall -y pillow pil jpeg libtiff libjpeg-turbo
conda install -yc conda-forge libjpeg-turbo
CFLAGS="${CFLAGS} -mavx2" pip install --upgrade --no-cache-dir --force-reinstall --no-binary :all: --compile pillow-simd
conda install -y jpeg libtiff
from fastai.vision import *
ImportError: The _imaging extension was built for another version of Pillow or PIL:
Core version: 6.0.0.post0
Pillow version: 6.1.0

Q: Is it possible to safely downgrade pillow to 6.0.0 or should I wait for pillow-simd to get upgraded? What is the best way to resolve this issue?

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#2

The short answer is that it is probably safe to downgrade for now. You can check the Pillow changelog to make sure that the new features in 6.1.0 aren’t essential for your purposes.

To downgrade run:

conda uninstall pillow libjpeg-turbo
conda install -c conda-forge libjpeg-turbo pillow==6.0.0
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