# Is a Dataset copied as part of Dataloader with multiple workers?

**URL:** <https://discuss.pytorch.org/t/is-a-dataset-copied-as-part-of-dataloader-with-multiple-workers/112924>\
**Category:** Uncategorized\
**Created:** [February 25, 2021, 3:28am UTC](https://discuss.pytorch.org/t/is-a-dataset-copied-as-part-of-dataloader-with-multiple-workers/112924 "2021-02-25T03:28:40Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![ptrblck](https://discuss.pytorch.org/user_avatar/discuss.pytorch.org/ptrblck/32/1823_2.png) [@ptrblck](https://discuss.pytorch.org/u/ptrblck)\
**Post date:** [February 26, 2021, 10:40pm UTC](https://discuss.pytorch.org/t/is-a-dataset-copied-as-part-of-dataloader-with-multiple-workers/112924/4 "2021-02-26T22:40:43Z")

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You could take a look at [this post](https://discuss.pytorch.org/t/how-to-prefetch-data-when-processing-with-gpu/548/19), which explains data loading bottlenecks and some potential workarounds.

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