# Specifying resources using Ray Serve

**URL:** <https://discuss.ray.io/t/specifying-resources-using-ray-serve/22511>\
**Category:** Ray Serve\
**Created:** [May 19, 2025, 9:41am UTC](https://discuss.ray.io/t/specifying-resources-using-ray-serve/22511 "2025-05-19T09:41:53Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![vadimkantorov](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/vadimkantorov/32/7951_2.png) [@vadimkantorov](https://discuss.ray.io/u/vadimkantorov)\
**Post date:** [May 19, 2025, 9:41am UTC](https://discuss.ray.io/t/specifying-resources-using-ray-serve/22511/1 "2025-05-19T09:41:53Z")

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Hi! I’m a Ray newbie.

I’m looking for recommendations of how to build a very simple pipeline with Ray (not model serving per se, but somewhat similar):

1. a single node
2. node has 128 vCPUs
3. I’d like to build a HTTP API which processes the CPU-heavy requests (so in total I’d like to specify maximum number of simultaneous workers as 256 - to max out CPU usage) with a function (wrapped/parallelized as Ray actor)

Is it possible to do just with Ray Serve (without fastapi/uvicorn; relying on Ray for controlling the max simultaneous parallelism)? How can I specify the Ray resources using Ray Serve? (e.g. I’d like to specify that actor takes up to 0.5 cpu resource, and in total there is 128 of cpu resource; I found [Resource Allocation — Ray 2.46.0](https://docs.ray.io/en/latest/serve/resource-allocation.html), but it seems lacking a complete example) Is there anywhere a complete code example of such basic pattern?

Thanks!

* * *

E.g. one can think of application like [GitHub - project-numina/kimina-lean-server: Kimina Lean server](https://github.com/project-numina/kimina-lean-server/) which is a server which accepts HTTP requests for verification of programs the in Lean programming language. This requires having a pool of workers each running an instance of Lean compiler (which may crash occasionally). Would Ray / Ray Serve be a good framework for solving such a task?

**1. Severity of the issue: (select one)**  
 None: I’m just curious or want clarification.

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<div class="post-metadata">

**Author:** ![Akshay\_Malik](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/akshay_malik/32/3807_2.png) [@Akshay\_Malik](https://discuss.ray.io/u/Akshay_Malik)\
**Post date:** [May 19, 2025, 7:57pm UTC](https://discuss.ray.io/t/specifying-resources-using-ray-serve/22511/2 "2025-05-19T19:57:07Z")

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Hi, thanks for your interest in Ray Serve! Yes, its certainly possible to build this with Ray Serve. You can take a look at this example where the resources are specified per deployment - [Serve a Stable Diffusion Model — Ray 2.46.0](https://docs.ray.io/en/latest/serve/tutorials/stable-diffusion.html)