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datasets: CIFAR10 download slow #9536

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@sjfleming

I've noticed recently that the server that hosts CIFAR10 seems to be having bad issues (noticed first on June 23, 2026, and it has become progressively worse).

It currently takes me 57 minutes to download the 162MB tarball. There seem to be a few redirects happening.

url = "https://www.cs.toronto.edu/~kriz/cifar-10-python.tar.gz"

Can the server be fixed, or can this URL be redirected elsewhere? (Maybe every AI-generated test script across the globe is pointing to this and just hammering the server... ?)

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