transformers: Can’t run Parallel inference

• transformers version: 4.12.3
• Platform: Darwin-20.6.0-x86_64-i386-64bit
• Python version: 3.7.0
• PyTorch version (GPU?): 1.10.0 (False)
• Tensorflow version (GPU?): not installed (NA)
• Flax version (CPU?/GPU?/TPU?): not installed (NA)
• Jax version: not installed
• JaxLib version: not installed
• Using GPU in script?: No
• Using distributed or parallel set-up in script?: parallel

Hi, I have warning message [W ParallelNative.cpp:214] Warning: Cannot set number of intraop threads after parallel work has started or after set_num_threads call when using native parallel backend (function set_num_threads) while using pipeline

pipe = pipeline("sentiment-analysis", model=model, padding=True, max_length=200, truncation=True)
results = pipe(texts)

It happened on both models:

• “distilbert-base-uncased-finetuned-sst-2-english”
• “cardiffnlp/twitter-roberta-base-sentiment”

Only one cpu is executed!

Any suggestions ? Thanks

@Narsil @LysandreJik