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vllm-project
vllm
Python2023–2026
vllm-project / vllm

vllm

A high-throughput and memory-efficient inference and serving engine for LLMs

50Distinct people
66Mentions
0Explicit recommenders
96.8KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

A high-throughput and memory-efficient inference and serving engine for LLMs

GitHub

Where it is used

  • Samsung Electronics — Samsung Electronics uses vLLM to protect sensitive data by running a private LLM API on internal GPU infrastructure within an air-gapped network. The internal system serves over 4,000 employees. Source

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

Mentioned in the same Hacker News threads. That is not proof they are substitutes.

This week on Hacker News

Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 12:45:45 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year66 dated mentions

Observed mentions: 2023-06-25 04:25:40 UTC to 2026-09-26 14:02:12 UTC.

01020302023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 17 mentions; 8 submissions, 9 comments20232024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 8 mentions; 1 submissions, 7 comments20242025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 9 mentions; 0 submissions, 9 comments2026-01-01 00:00:00 UTC to 2027-01-01 00:00:00 UTC (exclusive): 32 mentions; 7 submissions, 25 comments. Incomplete calendar period.2026*

* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC1789
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC817
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC909
2026 (partial)2026-01-01 00:00:00 UTC2027-01-01 00:00:00 UTC32725

What Hacker News says

8 sources
I guess the root cause of my claim is that OpenAI won't tell us whether or not GPT-3.5 is an MoE model, and I assumed it wasn't. Since GPT-3.5 is clearly nondeterministic at temp=0, I believed the nondeterminism was due to FPU stuff, and this effect was amplified with GPT-4's MoE. But if GPT-3.5 is also MoE then that's just wrong. What makes this especially tricky is that small models are truly 100% deterministic at temp=0 because the relative likelihoods are too coarse for FPU issues to be a factor. I had thought 3.5 was big enough that some of its token probabilities were too fine-grained for the FPU. But that's probably wrong. On the other hand, it's not just GPT, there are currently floating-point difficulties in vllm which significantly affect the determinism of any model run on it: https://github.com/vllm-project/vllm/issues/966 No
Read the rest
te that a suggested fix is upcasting to float32. So it's possible that GPT-3.5 is using an especially low-precision float and introducing nondeterminism by saving money on compute costs. Sadly I do not have the money[1] to actually run a test to falsify any of this. It seems like this would be a good little research project. [1] Or the time, or the motivation :) But this stuff is expensive.
In AI leaderboards are no longer useful. It's time to switch to Pareto curves
Great question! scheduling workloads onto GPUs in a way where VRAM is being utilised efficiently was quite the challenge. What we found was the IO latency for loading model weights into VRAM will kill responsiveness if you don't "re-use" sessions (i.e. where the model weights remain loaded and you run multiple inference sessions over the same loaded weights). Obviously projects like https://github.com/vllm-project/vllm exist but we needed to build out a scheduler that can run a fleet of GPUs for a matrix of text/image vs inference/finetune sessions. disclaimer: I work on Helix
In How we got fine-tuning Mistral-7B to not suck

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