# Using num\_proc\>1 in Dataset.map hangs

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**Category:** 🤗Datasets\
**Created:** [June 23, 2023, 12:11pm UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fusing-num-proc-1-in-dataset-map-hangs%2F44310 "2023-06-23T12:11:39Z")\
**Posts on this page:** 1\
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**Author:** ![jimypbr](https://avatars.discourse-cdn.com/v4/letter/j/919ad9/32.png) [@jimypbr](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Fjimypbr)%5C
**Post date:** [June 23, 2023, 12:37pm UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fusing-num-proc-1-in-dataset-map-hangs%2F44310%2F2 "2023-06-23T12:37:12Z")

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Could related to this: [Load\_dataset hangs with local files - #4 by lhoestq](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fload-dataset-hangs-with-local-files%2F28034%2F4)  
I’m doing this inside an IPython session…

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