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I roughly implemented sliding window attention here:https://github.com/arlo-phoenix/llama.cpp/tree/gemma2 the branch is already rebased on#8197so this should fix all gemma2 bugs. No idea if it's correct, output isn't great yet. But it doesn't completely break like it does without it....
图1展示了经典的Self-Attention和Longformer提出的Self-Attention,其中图1a是经典的Self-Attention,它是一种”全看型”的Self-Attention,即每个token都要和序列中的其他所有token进行交互,因此它的时空复杂度均是$O(n^2)$。右边的三种模式是Longformer提出来的Self-Attention模式,分别是Sliding Window Attention(滑窗机...
按照这个规律,可以解释Mistral文章中,所提到的这一段 Note that tokens outside the sliding window still influence next wordprediction. At each attention layer, information can move forward by W tokens at most: after two attention layers, information can move forward by 2W tokens, etc. For instance ...
This PR ports the change in #9403 to support sliding window attention with vllm-flash-attn on V1.
Tensors and Dynamic neural networks in Python with strong GPU acceleration - [ROCm] FlexAttention Sliding Window Attention Numeric Error · pytorch/pytorch@c1c94cb
Currently, implementation of the sliding window in the Gemma2FlashAttention2 module has issues. Specifically, when applying the sliding window, the attention mask is sliced. This can lead to problems if the sequence length exceeds the sliding window size. Instead, I use the window_size parameter...
(void*)&window_left, (void*)&logits_soft_cap, (void*)&sm_scale, (void*)&log2_rope_rcp_scale, Expand Down 21 changes: 10 additions & 11 deletions 21 include/flashinfer/decode_attention_decl.cuh Show comments View file Edit file Delete file This file contains bidirectional Unicode ...
"num_attention_heads": 32, "num_hidden_layers": 32, "num_key_value_heads": 32, "rms_norm_eps": 1e-06, "rope_theta": 1000000.0, "sliding_window": null, // replace with null here "tie_word_embeddings": false, "torch_dtype": "bfloat16", "transformers_version": "4.37.0", "...
Fix the wrong calculation for sliding window attention Rename seq_lens_sum to paged_kernel_lens_sum in flashinfer_backend.py` Monkey patch gemma2 in transformers to fix the OOM Temporarily disable ...