I apply the tokenizer to my custom dataset using the datasets.Dataset.map() method as done in the run_mlm.py example. FYI, I am using multiprocessing by setting num_proc parameter of map(). I have a multi-GPU system, and doing the above usually takes about ~10 minutes. But once I use DeepSpeed (d…

Slow processing with map when using deepspeed or fairscale

jasonyoun June 25, 2021, 6:13am 11

I was also able to reproduce the result. Thanks for the prompt support @stas and @sgugger.

2 Likes

Caching a dataset with map() when loaded with from_dict()

Topic		Replies	Views
Dataset map function takes forever to run! 🤗Datasets	16	6714	August 15, 2024
How does `datasets.Dataset.map` parallelize data? Beginners	3	3114	August 5, 2024
Multiprocessing map taking too much memory footprint 🤗Datasets	17	5817	April 5, 2024
Datasets mapping slow down in the end 🤗Datasets	0	28	January 27, 2025
Using num_proc>1 in Dataset.map hangs 🤗Datasets	8	4011	August 19, 2024