Vllm sliding window This prompt is documented here, here, or here Jul 11, 2023 · +34% higher throughput? TLDR: Seeing vLLM has been really fascinating! @oleitersdorf and I investigated whether we could further accelerate vLLM by profiling its performance with GPU counters. Jul 19, 2024 · Therefore, there should be significant interest in fully supporting Gemma-2-9b with an 8K token context, rather than being limited to its current 4K sliding window. model_executor. py:715] Gemma 2 uses sliding window attention for every odd layer, which is currently not supported by vLLM. hf_text_config. My initial take on the design is to implement a SlidingWindowBlockTable that composes within it a BlockTable. Unfortunately I can't get prefix caching to work due to sliding window attention (if someone knows how to get that to turn off for vllm, if that is possible, would be great to know), but yea, just curious to know other people's experience using Mixtral8x7b w/ vLLM 6 days ago · Learn how to install Flash Attention for Vllm efficiently and effectively with step-by-step instructions. Default: True--num-lookahead-slots Jun 18, 2024 · vLLM是一个快速且易于使用的库，用于 LLM 推理和服务，可以和HuggingFace 无缝集成。vLLM利用了全新的注意力算法PagedAttention，有效地管理注意力键和值。在吞吐量方面，vLLM的性能比HuggingFace Transformers(HF)高出 24 倍，文本生成推理（TGI）高出3. py at main · vllm-project/vllm. Please raise an issue so we can investigate. vLLM Engine User Guide¶ Model Artifacts Structure¶ vLLM expects the model artifacts to be in the standard HuggingFace format. 使用 BlockSpaceMangerV2。--num-lookahead-slots. Mar 18, 2024 · You signed in with another tab or window. Apr 29, 2024 · A quite straight forward way to mitigate this problem is to let a fraction of layers in the model use sliding window attention (e. 3. sliding_window will be deleted, and the model will be treated as a full-attention model. MMLU ProIn the MMLU Pro test,different KV Jul 22, 2024 · vllm的秘密武器是什么？ 为了理解vllm如何实现降低延迟和优化系统总体性能的目标，我们应该了解vllm的瓶颈以及如何解决这个问题。 内存使用问题. For LMStudio, the model already works with its full context size. I experimented with different input and output sequence lengths, expecting that for a fixed large output length (e. To support a model with interleaving sliding windows, we need to take care of the following details: Make sure this line evaluates has_interleaved_attention to True for this model, and set self. One can see the sizable improvement when a vertical stride of 16 is added, matching even the dense attention model, regardless of the very smaller window size. --num-lookahead-slots. --disable-sliding-window. vLLMisfastwith: • State-of-the-artservingthroughput Oct 3, 2023 · Sliding Window KV Cache: Integrate the sliding window KV cache tailored for extensive generation tasks. 4 onwards supports model i… Sep 13, 2024 · Last Updated on 2024-09-13 by Clay. I want to launch vllm with Vigostral 7B Chat AWQ by enabling prefix caching. The full trace: INFO 02-13 06:16:19 model_runner. Notes Feb 5, 2024 · With a sliding window size 𝑊 = 3, every layer adds information about (𝑊 — 1) = 2 tokens. 04 LTS (x86_64) GCC version: (Ubuntu 11. 禁用滑动窗口，将其限制为滑动窗口大小。--use-v2-block-manager. e. Disables sliding window, capping to sliding window size. with a window size of 8k), so that the model can remain it's full capability in short context length and still have some long ICL ability (with the remaining full attention layers), making the memory vs long Aug 22, 2024 · utils. 0+cu121 Is debug build: False CUDA used to build PyTorch: 12. Apr 13, 2024 · 🚀 The feature, motivation and pitch Currently, both prefix caching and chunked prefill doesn't work with sliding window attention because the block tables are not updated properly. 1 Thank you Oct 13, 2023 · 与唯一的可行基线（带有重新计算的滑动窗口Sliding Window w/ Re-computation）相比，StreamingLLM实现了高达22. What is the conflict between sliding window and paged KV cache? Does this limitation mean that using it with FlashInfer is also not possible? Alternatives Mar 23, 2024 · marsggbo：大模型推理框架 vLLM 源码解析（一）：框架概览1. 1 20180712 (Red Hat 7. Before submitting a new issue You signed in with another tab or window. 1-17) Clang version: Could not collect CMake version: version 3. Disables sliding window, capping to sliding window size--use-v2-block-manager. interleaved_sliding_window to the format of interleaving Mar 13, 2024 · In Hugging Face "eager" Mistral implementation, a sliding window of size 2048 will mask 2049 tokens. py:241] gptq quantization is not fully optimized yet. WARNING 09-02 15:59:54 utils. This will be replaced by speculative config in the future; it is present to enable correctness tests until then. 14 | packaged by conda-forge | (main, Mar 20 2024, 12:45:18) [GCC 12. Jun 19, 2024 · WARNING 06-20 00:34:55 init. 35 Python version: 3. Default: 0--seed Apr 10, 2025 · To install vLLM from source on Windows, follow these detailed steps to ensure a smooth installation process. PagedAttention. Jan 31, 2025 · Proposal to improve performance. Experimental scheduling config necessary for speculative decoding. 04) 11. g. --swap-space Jan 27, 2025 · That is, no matter how long the user input is, vllm always intercepts the length of the max-model-len processing behind it. 在Llama-2-7B上对256个句子（每个句子长度为16）的平均注意力logits的可视化。 --disable-sliding-window. Maintaining hash table is simpler than maintaining a tree. Default: False--num-lookahead-slots. Default: False--use-v2-block-manager [DEPRECATED] block manager v1 has been removed and SelfAttnBlockSpaceManager (i. Random seed for operations. May 28, 2024 · Mistral-7Bは、v0. PagedAttention is a sophisticated cache management layer popularized and used by the vLLM inference framework. Here is the list of text generation models supported in vllm 0. Mar 12, 2024 · 在SWA的基础上，还可以进行空洞滑窗（dilated sliding window），在不增加计算量的情况下，提升感受野。这也是从空洞卷积（下图）来的灵感了。 还可以更进一步优化attention。无论是SWA还是dilated sliding window，每个位置都只能看到局部的信息。 在SWA的基础上，还可以进行空洞滑窗（dilated sliding window），在不增加计算量的情况下，提升感受野。这也是从空洞卷积（下图）来的灵感了。 还可以更进一步优化attention。无论是SWA还是dilated sliding window，每个位置都只能看到局部的信息。 Mar 12, 2024 · You signed in with another tab or window. Supported Model architecture¶ Text Generation Models. 30. block manager v2) is now the default. The config file specifies the transformers version to be 4. Then, self. Hi, As context lengths increase, it looks like different models are going about it in different ways. 在config. interleaved_sliding_window to the format of interleaving sliding windows the model can understand. py:558] Gemma 2 uses sliding window attention for every odd layer, which is currently not supported by vLLM. So vllm is getting confused that gemma 2 can only support 4k. Default: 0--seed Nov 1, 2024 · 如上图所示，我们在最前面的三层使用 Full Cache 机制，即存储所有的 KV，三层以上的层则通过 Sliding Window 自动替换打分最低的 KV，通过这种方法就可以灵活的指定各个层所需要的内存空间，即节约了空间，又最大化了稀疏算法的效果。 Nov 19, 2024 · 书接上文，今天起来后感谢合作者的点醒，大概发现了如何用 vllm 去 serve embedding model，并且成功利用 serve 了 gte-7b。 Dec 20, 2024 · Sliding window layers only need to cache the tokens inside sliding window; The customized eviction strategies can be implemented within the memory manager of each type by assigning the LRU time tag carefully (or put into the FreeKVCacheBlockQueue in a careful order) Milestone 2: allow allocation of pages with different size by LCM pages Jan 26, 2024 · With Mistral's sliding window attention, we only need to cache the last tokens in the sliding window. Dec 12, 2023 · I wonder why using a 4k sliding window would be a problem since it is a "sliding window. Reference - KV Cache; Reference - Example Implementation; Initial Token Persistence: Ensure that starting tokens' KV (like the first page of tokens) are consistently maintained within the current context window. --use-v2-block-manager [DEPRECATED] block manager v1 has been removed and SelfAttnBlockSpaceManager (i. 0] (64 Jan 22, 2025 · Hi, As context lengths increase, it looks like different models are going about it in different ways. Jul 15, 2024 · Specifically for 128k model, sliding window is disabled. 42. This leads to a restriction for the setting of the max model len value, which equals to the default sliding window value, according to this line of code Aug 13, 2024 · Hi there, I'm new to vllm and I may have missed something, but in BlockManagerV2, I only see consideration of the sliding window in the can_allocate function, like the following code snippet: def can_allocate(self, seq_group: SequenceGroup) -> AllocStatus: # other code Feb 25, 2024 · In sliding window attention, only W keys and vectors are retained in the cache, with older vectors being evicted (here W=6). Default: 0--seed Contribute to Yard1/vllm-flash-attention development by creating an account on GitHub. Please open an issue to discuss this feature. py:1111] Starting --disable-sliding-window. Begin by ensuring that you have the necessary prerequisites installed, including Python and Git. float32 to torch. It has left_size, right_size. I was Aug 13, 2024 · WARNING 08-13 15:39:19 utils. For MI300x (gfx942) users, to achieve optimal performance, please refer to MI300x tuning guide for performance optimization and tuning tips on system and workflow level. py:721] Gemma 2 uses sliding window attention for every odd layer, which is currently not supported by vLLM. Apr 1, 2024 · You can disable the sliding window by using --disable-sliding-window. This is also true for flash attention. Jul 9, 2024 · How would you like to use vllm. Jul 9, 2024 · WARNING 07-08 19:39:49 utils. 0 Clang version: Could not collect CMake version: version 3. However, while these models Jul 6, 2024 · You signed in with another tab or window. WARNING 07-22 22:39:35 config. 5倍。_vllm windows You signed in with another tab or window. 2倍的速度提升，实现了LLM的流式输出。 大模型前两层和后几层注意力分布. These models have empowered organizations to build their own AI-driven applications, from chatbots and agents to content generation and recommendation systems. This localizes the attention span and reduces the time complexity to O(n*w) , a linear function with respect to the sequence length n . 2. 0 (default, Mar 3 2022, 09:58:08) [GCC 7. Jul 15, 2024 · WARNING 07-22 22:39:35 utils. Oct 23, 2024 · 首先需要解决的问题便是不同层的内存管理问题，因为 vLLM 采用的是全层统一的分页内存管理模式，同时在队列策略上是 Full Cache 和 Sliding Window 只能二选一的策略，因而我们需要对 vLLM 的底层结构进行了调整，即同时支持 Full Cache 和 Sliding Window 以不同的层可以 Apr 5, 2024 · You signed in with another tab or window. Sliding Window Attention uses a fixed-size window w around each token in the sequence. 1 ROCM used to build PyTorch: N/A OS: Amazon Linux 2 (x86_64) GCC version: (GCC) 7. 0+cu124 Is debug build: False CUDA used to build PyTorch: 12. 0-1ubuntu1~22. WARNING 09-20 08:05:44 config. Setting this flag to True or False has no effect on vLLM behavior. Dec 5, 2024 · We control different KV Cache compression ratios by setting different sliding window lengths on different layers. mgdb zoee grvvt ednay pnefjqg zcbl ewjwl ybojlt ncmueez bscak inmr kecahq thb xabugl mmpd