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Inference tutorial - Part 3 of e2e series [WIP] #2343

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pytorch-bot bot commented Jun 9, 2025

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🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/ao/2343

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@facebook-github-bot facebook-github-bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label Jun 9, 2025
@jainapurva jainapurva added the topic: documentation Use this tag if this PR adds or improves documentation label Jun 10, 2025

vllm serve pytorch/Phi-4-mini-instruct-float8dq --tokenizer microsoft/Phi-4-mini-instruct -O3

Inference with vLLM
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should we move this after Inference with Transformers

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cc @jainapurva I think if vLLM is our recommended serving solution, this should go before transformers.


vLLM automatically leverages torchao's optimized kernels when serving quantized models, providing significant throughput improvements.

Setting up vLLM with Quantized Models
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nit: this doesn't have to be a new section I think

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Hi @jainapurva, by the way I'm adding a serving.rst here: #2394. It uses the same template as parts 1 and 2. After that's landed, do you mind updating your PR to use that file instead? Right now it's a blank page with the template:

Screenshot 2025-06-17 at 5 48 14 PM

@jainapurva jainapurva force-pushed the inference_tutorial branch from b93b892 to ce675b8 Compare June 18, 2025 21:05
.. note::
For more information on supported quantization and sparsity configurations, see `HF-Torchao Docs <https://huggingface.co/docs/transformers/main/en/quantization/torchao>`_.

Inference with vLLM
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for this section, can you replace with https://huggingface.co/pytorch/Qwen3-8B-int4wo-hqq#inference-with-vllm

it might be easier to do command line compared to code

print(f"Output: {generated_text!r}")
print("-" * 60)

[Optional] Inference with Transformers
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We should have an Inference w/ SGlang section

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I tested the integration of TorchAO and SGLang, came across a lot of issues in running the server. As discussed with @jerryzh168 offline, we can add this later, after more thorough testing and updates.

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6 participants