Question: Is litdata faster when loading local dataset or network storage s3 dataset?

[2catycm]

When my storage is large enough to download the dataset locally, should I still use litdata's streaming api?

[github-actions]

Hi! thanks for your contribution!, great first issue!

[2catycm]

Another Question，can I use sshfs instead of s3? since I don't have s3 account, but I have multiple machines. To save storage, I am wondering to store datasets on machine D, and access them from machine A, B, C. Can I use litdata to optimize this workflow?

[tchaton]

Hey @2catycm,

Yes, some users reported increased speed even running locally.

We don t support sssfs but it shouldn t be hard to add it if you want too. Feel free to make a PR.

Best,
T.C

[2catycm]

Hey @2catycm,

Yes, some users reported increased speed even running locally.

We don t support sssfs but it shouldn t be hard to add it if you want too. Feel free to make a PR.

Best, T.C

Thanks for your reply, I am trying to use vtab-1k dataset locally and tried to use litdata to optimize it. And I found that on a subset of length 800, the speed of litdata is faster than pytorch Dataset by 1.41 times (147 ms -> 104ms).

I am not sure whether my benchmark is appropriate, since I just trivially iterate the dataset, haven't used it to train.

%%timeit
bar = tqdm(train_dataset)
for i, data in enumerate(bar):
    pass

[tchaton]

Hey @2catycm Yes, this is appropriate. We benchmark by iterating over the dataset 2 epochs in the cloud, one epoch locally.

[tchaton]

Hey @2catycm. We could probably make it slightly faster too.

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