datasets: CIFAR10 download slow
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- Dominant language
- Python
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Description
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.
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... ?)
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start at torchvision/datasets/cifar.py#L32 and inspect the CIFAR10 download URL and its redirects. Reproduce the slow 162MB download, then determine whether an updated URL or another documented resolution is possible; done means CIFAR10 downloads reliably without the reported delay.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- computer-vision, machine-learning
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100