I’m trying to process audio data faster (librispeech) using multi-processing. Serially everything works, but when I try num_proc>1 in the .map function the progress bar just sits at 0. Reproducer: from datasets import load_dataset from transformers import AutoFeatureExtractor feature_extractor = …

Tried in main and it still hangs. However I found the the real reason for the hang seems to be torch threads. Setting torch.set_num_threads(1) made it work. :smiling_face:

Using num_proc>1 in Dataset.map hangs

🤗Datasets

jimypbr June 23, 2023, 12:37pm 2

Could related to this: Load_dataset hangs with local files - #4 by lhoestq
I’m doing this inside an IPython session…

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Using num_proc>1 in Dataset.map hangs

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