vllm/docs/features

Features

Compatibility Matrix

The tables below show mutually exclusive features and the support on some hardware.

The symbols used have the following meanings:

• ✅ = Full compatibility
• 🟠 = Partial compatibility
• ❌ = No compatibility
• ❔ = Unknown or TBD

!!! note Check the ❌ or 🟠 with links to see tracking issue for unsupported feature/hardware combination.

Feature x Feature

<style> td:not(:first-child) { text-align: center !important; } td { padding: 0.5rem !important; white-space: nowrap; } th { padding: 0.5rem !important; min-width: 0 !important; } th:not(:first-child) { writing-mode: vertical-lr; transform: rotate(180deg) } </style>

Feature	[CP][chunked-prefill]	APC	LoRA	SD	CUDA graph	pooling	enc-dec	logP	prmpt logP	async output	multi-step	mm	best-of	beam-search	prompt-embeds
[CP][chunked-prefill]	✅
APC	✅	✅
LoRA	✅	✅	✅
SD	✅	✅	❌	✅
CUDA graph	✅	✅	✅	✅	✅
pooling	🟠*	🟠*	✅	❌	✅	✅
enc-dec	❌	❌	❌	❌	✅	✅	✅
logP	✅	✅	✅	✅	✅	❌	✅	✅
prmpt logP	✅	✅	✅	✅	✅	❌	✅	✅	✅
async output	✅	✅	✅	❌	✅	❌	❌	✅	✅	✅
multi-step	❌	✅	❌	❌	✅	❌	❌	✅	✅	✅	✅
mm	✅	✅	🟠^	❔	✅	✅	✅	✅	✅	✅	❔	✅
best-of	✅	✅	✅	❌	✅	❌	✅	✅	✅	❔	❌	✅	✅
beam-search	✅	✅	✅	❌	✅	❌	✅	✅	✅	❔	❌	❔	✅	✅
prompt-embeds	✅	❌	?	❌	✅	❌	❌	✅	❌	?	?	❌	?	?	✅

* Chunked prefill and prefix caching are only applicable to last-token pooling.
^{^} LoRA is only applicable to the language backbone of multimodal models.

{ #feature-x-hardware }

Feature x Hardware

Feature	Volta	Turing	Ampere	Ada	Hopper	CPU	AMD	TPU
[CP][chunked-prefill]	❌	✅	✅	✅	✅	✅	✅	✅
APC	❌	✅	✅	✅	✅	✅	✅	✅
LoRA	✅	✅	✅	✅	✅	✅	✅	✅
SD	✅	✅	✅	✅	✅	✅	✅	❌
CUDA graph	✅	✅	✅	✅	✅	❌	✅	❌
pooling	✅	✅	✅	✅	✅	✅	✅	❌
enc-dec	✅	✅	✅	✅	✅	✅	❌	❌
mm	✅	✅	✅	✅	✅	✅	✅	❌
logP	✅	✅	✅	✅	✅	✅	✅	❌
prmpt logP	✅	✅	✅	✅	✅	✅	✅	❌
async output	✅	✅	✅	✅	✅	❌	❌	❌
multi-step	✅	✅	✅	✅	✅	❌	✅	❌
best-of	✅	✅	✅	✅	✅	✅	✅	❌
beam-search	✅	✅	✅	✅	✅	✅	✅	❌
prompt-embeds	✅	✅	✅	✅	✅	✅	?	❌