与MHA不同的是,MQA 让所有的头之间共享同一份 Key 和 Value 矩阵,每个头只单独保留了一份 Query 参数,从而大大减少 Key 和 Value 矩阵的参数量。 GQA(Grouped-Query Attention,GQA: Training Generalized Multi-Query Transformer Models from Multi-Head Checkpoints)是分组查询注意力,GQA将查询头分成G组,每个组...
MultiQueryAttention (MQA) [Used in Falcon LLM] and GroupedQueryAttention (GQA) [Used in Llama 2 LLM] are alternatives to MultiHeadAttention (MHA) but they are a lot faster. Here's the speed comparison in my naive implementation, ===...
Grouped-query Attention是multi-head和multi-query方案的折中。模型精度高于multi-query,速度优于multi-head。LLaMA2在34B和70B的模型上使用了Grouped-Query Attention。 LLaMA2的34B和70B的模型是采用了Grouped Multi-Query Attention。在 30B 模型上训练 150B tokens,发现 GQA 效果和 MHA 差不多,比 MQA 要好;在 ...
Probably easiest to just write GroupedQueryAttention, and consider MultiQueryAttention a special case of it. We can expose MultiQueryAttention, as subclass of GroupedQueryAttention that sets a single init value num_key_value_heads=1 on the base class. Somewhat similar to our AdamW class with we...
grouped query attention https://arxiv.org/pdf/2305.13245.pdf 与multi query attention相同，保持...
Related task:常规思路(自动驾驶+路标识别;query classification+web search;坐标预测+物体识别;duration+frequency) Adversarial:在domain adaption,相关的任务可能无法获取,可以使用对抗任务作为negative task(最大化training error),比如辅助任务为预测输入的domain,则导...
Homologous recombination is a robust, broadly error-free mechanism of double-strand break repair, and deficiencies lead to PARP inhibitor sensitivity. Patients displaying homologous recombination deficiency can be identified using ‘mutational signatures
Related task:常规思路(自动驾驶+路标识别;query classification+web search;坐标预测+物体识别;duration+frequency) Adversarial:在domain adaption,相关的任务可能无法获取,可以使用对抗任务作为negative task(最大化training error),比如辅助任务为预测输入的domain,则导致主任务模型学习的表征不能区分不同的domain。
一、Multi-Head Attention性能分析 1.Prefill Phase 如下是批量计算Multi-head Attention的方法,批量体现在1)多个序列,2)一个序列中的多个位置计算注意力,对应着大模型推理的Prefill阶段。 其中矩阵X是query部分的输入,通过与投影矩阵Pq相乘得到Q,矩阵M是key和value部分的输入,通过投影矩阵Pk和Pv得到K和V;根据点积注...
transformerspytorchtransformerattentionattention-mechanismsoftmax-layermulti-head-attentionmulti-query-attentiongrouped-query-attentionscale-dot-product-attention UpdatedOct 7, 2023 Python Improve this page Add a description, image, and links to themulti-query-attentiontopic page so that developers can more ...