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[𝐍𝐞𝐰 𝐏𝐚𝐩𝐞𝐫] 𝐀𝐥𝐥 𝐭𝐨𝐤𝐞𝐧𝐬 𝐬𝐡𝐨𝐮𝐥𝐝 𝐧𝐨𝐭 𝐫𝐞𝐪𝐮𝐢𝐫𝐞 𝐭𝐡𝐞 𝐬𝐚𝐦𝐞 𝐞𝐟𝐟𝐨𝐫𝐭 𝐭𝐨 𝐜𝐨𝐦𝐩𝐮𝐭𝐞! ⇒ 𝐌𝐢𝐱𝐭𝐮𝐫𝐞 𝐨𝐟 𝐝𝐞𝐩𝐭𝐡𝐬 🫧🐠
[𝐍𝐞𝐰 𝐏𝐚𝐩𝐞𝐫] 𝐀𝐥𝐥 𝐭𝐨𝐤𝐞𝐧𝐬 𝐬𝐡𝐨𝐮𝐥𝐝 𝐧𝐨𝐭 𝐫𝐞𝐪𝐮𝐢𝐫𝐞 𝐭𝐡𝐞 𝐬𝐚𝐦𝐞 𝐞𝐟𝐟𝐨𝐫𝐭 𝐭𝐨 𝐜𝐨𝐦𝐩𝐮𝐭𝐞! ⇒ 𝐌𝐢𝐱𝐭𝐮𝐫𝐞 𝐨𝐟 𝐝𝐞𝐩𝐭𝐡𝐬 🫧🐠
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Google Researchers were unhappy with the way current decoding generally works: all tokens go through the same layers, thus requiring exactly the same effort to compute.
Google Researchers were unhappy with the way current decoding generally works: all tokens go through the same layers, thus requiring exactly the same effort to compute.
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Whereas in reality, completing the answer to a difficult math problem for instance should be more computationally intense than completing the text of the Declaration of Independence: 𝗻𝗼𝘁 𝗮𝗹𝗹 𝘁𝗼𝗸𝗲𝗻𝘀 𝗮𝗿𝗲 𝗰𝗿𝗲𝗮𝘁𝗲𝗱 𝗲𝗾𝘂𝗮𝗹!
Whereas in reality, completing the answer to a difficult math problem for instance should be more computationally intense than completing the text of the Declaration of Independence: 𝗻𝗼𝘁 𝗮𝗹𝗹 𝘁𝗼𝗸𝗲𝗻𝘀 𝗮𝗿𝗲 𝗰𝗿𝗲𝗮𝘁𝗲𝗱 𝗲𝗾𝘂𝗮𝗹!
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➡️ 𝗧𝗵𝗲𝘆 𝗵𝗮𝗱 𝘁𝗵𝗶𝘀 𝗴𝗲𝗻𝗶𝘂𝘀 𝗶𝗱𝗲𝗮: 💡 𝗵𝗮𝘃𝗶𝗻𝗴 𝗮 𝘁𝗼𝗸𝗲𝗻 𝗴𝗼 𝘁𝗵𝗿𝗼𝘂𝗴𝗵 𝗮 𝗯𝗹𝗼𝗰𝗸 𝘀𝗵𝗼𝘂𝗹𝗱 𝗯𝗲 𝗼𝗽𝘁𝗶𝗼𝗻𝗮𝗹. The token can go through the block (thus undergoing expensive self-attention computation) or avoid it through a skip connection.
➡️ 𝗧𝗵𝗲𝘆 𝗵𝗮𝗱 𝘁𝗵𝗶𝘀 𝗴𝗲𝗻𝗶𝘂𝘀 𝗶𝗱𝗲𝗮: 💡 𝗵𝗮𝘃𝗶𝗻𝗴 𝗮 𝘁𝗼𝗸𝗲𝗻 𝗴𝗼 𝘁𝗵𝗿𝗼𝘂𝗴𝗵 𝗮 𝗯𝗹𝗼𝗰𝗸 𝘀𝗵𝗼𝘂𝗹𝗱 𝗯𝗲 𝗼𝗽𝘁𝗶𝗼𝗻𝗮𝗹. The token can go through the block (thus undergoing expensive self-attention computation) or avoid it through a skip connection.
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The routing decision is taken on the block level: each block selects from the total sequence the top-k tokens that will go through it, and the others tokens will skip it. 𝘛𝘩𝘪𝘴 𝘢𝘭𝘭𝘰𝘸𝘴 𝘵𝘰 𝘤𝘩𝘰𝘰𝘴𝘦 𝘵𝘩𝘦 𝘦𝘹𝘢𝘤𝘵 𝙘𝙖𝙥𝙖𝙘𝙞𝙩𝙮 𝘰𝘧 𝘢 𝘣𝘭𝘰𝘤𝘬, 𝘪.𝘦. 𝘵𝘩𝘦 𝘱𝘳𝘰𝘱𝘰𝘳𝘵𝘪𝘰𝘯 𝘰𝘧 𝘵𝘰𝘬𝘦𝘯𝘴 𝘵𝘩𝘢𝘵 𝘨𝘰 𝘵𝘩𝘳𝘰𝘶𝘨𝘩 𝘪𝘵, 𝘸𝘩𝘪𝘤𝘩 𝘥𝘪𝘳𝘦𝘤𝘵𝘭𝘺 𝘪𝘯𝘧𝘭𝘶𝘦𝘯𝘤𝘦𝘴 𝘵𝘩𝘦 𝘤𝘰𝘮𝘱𝘶𝘵𝘢𝘵𝘪𝘰𝘯𝘢𝘭 𝘪𝘯𝘵𝘦𝘯𝘴𝘪𝘵𝘺 𝘰𝘧 𝘵𝘩𝘦 𝘧𝘰𝘳𝘸𝘢𝘳𝘥 𝘱𝘢𝘴𝘴.
The routing decision is taken on the block level: each block selects from the total sequence the top-k tokens that will go through it, and the others tokens will skip it. 𝘛𝘩𝘪𝘴 𝘢𝘭𝘭𝘰𝘸𝘴 𝘵𝘰 𝘤𝘩𝘰𝘰𝘴𝘦 𝘵𝘩𝘦 𝘦𝘹𝘢𝘤𝘵 𝙘𝙖𝙥𝙖𝙘𝙞𝙩𝙮 𝘰𝘧 𝘢 𝘣𝘭𝘰𝘤𝘬, 𝘪.𝘦. 𝘵𝘩𝘦 𝘱𝘳𝘰𝘱𝘰𝘳𝘵𝘪𝘰𝘯 𝘰𝘧 𝘵𝘰𝘬𝘦𝘯𝘴 𝘵𝘩𝘢𝘵 𝘨𝘰 𝘵𝘩𝘳𝘰𝘶𝘨𝘩 𝘪𝘵, 𝘸𝘩𝘪𝘤𝘩 𝘥𝘪𝘳𝘦𝘤𝘵𝘭𝘺 𝘪𝘯𝘧𝘭𝘶𝘦𝘯𝘤𝘦𝘴 𝘵𝘩𝘦 𝘤𝘰𝘮𝘱𝘶𝘵𝘢𝘵𝘪𝘰𝘯𝘢𝘭 𝘪𝘯𝘵𝘦𝘯𝘴𝘪𝘵𝘺 𝘰𝘧 𝘵𝘩𝘦 𝘧𝘰𝘳𝘸𝘢𝘳𝘥 𝘱𝘢𝘴𝘴.
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This yields Mixture-of-Depths (MoD), with spectacular results.
This yields Mixture-of-Depths (MoD), with spectacular results.
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✨ 𝗥𝗲𝘀𝘂𝗹𝘁𝘀:
✨ 𝗥𝗲𝘀𝘂𝗹𝘁𝘀:
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🎚️ 𝗖𝗮𝗽𝗮𝗰𝗶𝘁𝘆 𝗰𝗮𝗻 𝗯𝗲 𝘁𝘂𝗻𝗲𝗱 𝗮𝗹𝗹 𝘁𝗵𝗲 𝘄𝗮𝘆 𝗱𝗼𝘄𝗻 𝘁𝗼 𝟭𝟮.𝟱% for every second block: thus 87.5% of tokens just skip the block!
🎚️ 𝗖𝗮𝗽𝗮𝗰𝗶𝘁𝘆 𝗰𝗮𝗻 𝗯𝗲 𝘁𝘂𝗻𝗲𝗱 𝗮𝗹𝗹 𝘁𝗵𝗲 𝘄𝗮𝘆 𝗱𝗼𝘄𝗻 𝘁𝗼 𝟭𝟮.𝟱% for every second block: thus 87.5% of tokens just skip the block!
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🚀 For the same training time and performance, >𝟲𝟬% 𝗶𝗻𝗳𝗲𝗿𝗲𝗻𝗰𝗲 𝘀𝗽𝗲𝗲𝗱!
🚀 For the same training time and performance, >𝟲𝟬% 𝗶𝗻𝗳𝗲𝗿𝗲𝗻𝗰𝗲 𝘀𝗽𝗲𝗲𝗱!
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🤝 𝗖𝗮𝗻 𝗯𝗲 𝗰𝗼𝗺𝗯𝗶𝗻𝗲𝗱 𝘄𝗶𝘁𝗵 𝗠𝗶𝘅𝘁𝘂𝗿𝗲-𝗼𝗳-𝗘𝘅𝗽𝗲𝗿𝘁𝘀 for further improvements.
🤝 𝗖𝗮𝗻 𝗯𝗲 𝗰𝗼𝗺𝗯𝗶𝗻𝗲𝗱 𝘄𝗶𝘁𝗵 𝗠𝗶𝘅𝘁𝘂𝗿𝗲-𝗼𝗳-𝗘𝘅𝗽𝗲𝗿𝘁𝘀 for further improvements.
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📄 𝗣𝗮𝗽𝗲𝗿 𝗵𝗲𝗿𝗲 👉 
📄 𝗣𝗮𝗽𝗲𝗿 𝗵𝗲𝗿𝗲 👉 
resource
https://huggingface.co/papers/2404.02258
paper
2404.02258
https://huggingface.co/papers/2404.02258
Mixture-of-Depths: Dynamically allocating compute in transformer-based
  language models (2404.02258)
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📚 I added it to my paper collection 👉 
📚 I added it to my paper collection 👉 
resource
https://huggingface.co/collections/m-ric/spinning-up-in-llms-659e698f9dd5a71bd3f579a7
collection
m-ric/spinning-up-in-llms-659e698f9dd5a71bd3f579a7
https://huggingface.co/collections/m-ric/spinning-up-in-llms-659e698f9dd5a71bd3f579a7
[𝐍𝐞𝐰 𝐏𝐚𝐩𝐞𝐫] 𝐀𝐥𝐥 𝐭𝐨𝐤𝐞𝐧𝐬 𝐬𝐡𝐨𝐮𝐥𝐝 𝐧𝐨𝐭 𝐫𝐞𝐪𝐮𝐢𝐫𝐞 𝐭𝐡𝐞 𝐬𝐚𝐦𝐞 𝐞𝐟𝐟𝐨𝐫𝐭 𝐭𝐨 𝐜𝐨𝐦𝐩𝐮𝐭𝐞! ⇒ 𝐌𝐢𝐱𝐭𝐮𝐫𝐞 𝐨𝐟 𝐝𝐞𝐩𝐭𝐡𝐬 🫧🐠

Google Researchers were unhappy with the way current decoding generally works: all tokens go through the same layers, thus requiring exactly the same effort to compute.

Whereas in reality, completing the answer to a difficult math problem for instance should be more computationally intense than completing the text of the Declaration of Independence: 𝗻𝗼𝘁 𝗮𝗹𝗹 𝘁𝗼𝗸𝗲𝗻𝘀 𝗮𝗿𝗲 𝗰𝗿𝗲𝗮𝘁𝗲𝗱 𝗲𝗾𝘂𝗮𝗹!

➡️ 𝗧𝗵𝗲𝘆 𝗵𝗮𝗱 𝘁𝗵𝗶𝘀 𝗴𝗲𝗻𝗶𝘂𝘀 𝗶𝗱𝗲𝗮: 💡 𝗵𝗮𝘃𝗶𝗻𝗴 𝗮 𝘁𝗼𝗸𝗲𝗻 𝗴𝗼 𝘁𝗵𝗿𝗼𝘂𝗴𝗵 𝗮 𝗯𝗹𝗼𝗰𝗸 𝘀𝗵𝗼𝘂𝗹𝗱 𝗯𝗲 𝗼𝗽𝘁𝗶𝗼𝗻𝗮𝗹. The token can go through the block (thus undergoing expensive self-attention computation) or avoid it through a skip connection.
The routing decision is taken on the block level: each block selects from the total sequence the top-k tokens that will go through it, and the others tokens will skip it. 𝘛𝘩𝘪𝘴 𝘢𝘭𝘭𝘰𝘸𝘴 𝘵𝘰 𝘤𝘩𝘰𝘰𝘴𝘦 𝘵𝘩𝘦 𝘦𝘹𝘢𝘤𝘵 𝙘𝙖𝙥𝙖𝙘𝙞𝙩𝙮 𝘰𝘧 𝘢 𝘣𝘭𝘰𝘤𝘬, 𝘪.𝘦. 𝘵𝘩𝘦 𝘱𝘳𝘰𝘱𝘰𝘳𝘵𝘪𝘰𝘯 𝘰𝘧 𝘵𝘰𝘬𝘦𝘯𝘴 𝘵𝘩𝘢𝘵 𝘨𝘰 𝘵𝘩𝘳𝘰𝘶𝘨𝘩 𝘪𝘵, 𝘸𝘩𝘪𝘤𝘩 𝘥𝘪𝘳𝘦𝘤𝘵𝘭𝘺 𝘪𝘯𝘧𝘭𝘶𝘦𝘯𝘤𝘦𝘴 𝘵𝘩𝘦 𝘤𝘰𝘮𝘱𝘶𝘵𝘢𝘵𝘪𝘰𝘯𝘢𝘭 𝘪𝘯𝘵𝘦𝘯𝘴𝘪𝘵𝘺 𝘰𝘧 𝘵𝘩𝘦 𝘧𝘰𝘳𝘸𝘢𝘳𝘥 𝘱𝘢𝘴𝘴.

This yields Mixture-of-Depths (MoD), with spectacular results.

✨ 𝗥𝗲𝘀𝘂𝗹𝘁𝘀:
🎚️ 𝗖𝗮𝗽𝗮𝗰𝗶𝘁𝘆 𝗰𝗮𝗻 𝗯𝗲 𝘁𝘂𝗻𝗲𝗱 𝗮𝗹𝗹 𝘁𝗵𝗲 𝘄𝗮𝘆 𝗱𝗼𝘄𝗻 𝘁𝗼 𝟭𝟮.𝟱% for every second block: thus 87.5% of tokens just skip the block!
🚀 For the same training time and performance, >𝟲𝟬% 𝗶𝗻𝗳𝗲𝗿𝗲𝗻𝗰𝗲 𝘀𝗽𝗲𝗲𝗱!
🤝 𝗖𝗮𝗻 𝗯𝗲 𝗰𝗼𝗺𝗯𝗶𝗻𝗲𝗱 𝘄𝗶𝘁𝗵 𝗠𝗶𝘅𝘁𝘂𝗿𝗲-𝗼𝗳-𝗘𝘅𝗽𝗲𝗿𝘁𝘀 for further improvements.

📄 𝗣𝗮𝗽𝗲𝗿 𝗵𝗲𝗿𝗲 👉 https://huggingface.co/papers/2404.02258
📚 I added it to my paper collection 👉 https://huggingface.co/collections/m-ric/spinning-up-in-llms-659e698f9dd5a71bd3f579a7
❤️
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Ivan Fioravanti
ivanfioravanti
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