The details of PyTorch Linux binaries *.wkl

What is the difference between cu90/torch-0.3.1-cp27-cp27mu-linux_x86_64.whl and
cu90/torch-0.3.1-cp27-cp27m-linux_x86_64.whl. In details, what does ‘u’ in ‘cp27mu’ mean? And cp27 means ‘Python 2.7.x’?

As far as I know, the cp27m(u) defines the ABI-tag (application binary interface).
While cp27m defines the usage of narrow-unicode, cp27mu uses wide-unicode.

The cp27 is the python tag and defines the python version.

You can find more information on this in PEP513 or the pypa/manylinux repo.

So which one do you recommend that I use?
I want to install PyTorch 0.3

I would not recommend to use these ancient wheels, as neither Python2.x is supported nor would you be able to execute your workload on any new GPUs.

Thank you. I’ll have to write the entire code base to use py37