Jiao

### What happened + What you expected to happen Notebook is broken due to bad import first, maybe more issues down the road. we're creating this issue to keep track...

[Bug] Remove requests from minimal deps CI test from miniconda

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### Search before asking - [X] I searched the [issues](https://github.com/ray-project/ray/issues) and found no similar issues. ### Ray Component Ray Core ### What happened + What you expected to happen we...

Best practice of profiling execution across multiple processes

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Code to reproduce, with [Ray Nightly Wheel](https://docs.ray.io/en/master/ray-overview/installation.html#daily-releases-nightlies) Code to reproduce profiling https://gist.github.com/jiaodong/62a86e1f57887cfb96ee1f34e4df389b Tracing across boundary of processes can be tricky. In this case, my workload is starting multiple `Actor` that...

Hi, I'm trying to put a single mmf model with pre-trained weights and invoke it directly with my own input from python for a demo. No training needed. No dependency...

[AIR][Numpy] Add numpy narrow waist to `Preprocessor` and `BatchMapper`

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## Why are these changes needed? We need to add a numpy path in AIR to facilitate deep learning. Internally we support arrow / pandas as dataset format, but user...

[AIR] Improve tensor movement from host RAM to GPU

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### Description In our recent profiling of a production recsys model using TF with the following data: ```python def to_tf_dataset(dataset: ray.data.Dataset, batch_size): def to_tensor_iterator(): for batch in dataset.iter_tf_batches( batch_size=batch_size, prefetch_blocks=prefetch_blocks...