开启了ignore_empty_think，框架会自动删除<think>\n\n</think>\n\n，导致模型不思考

[leipan797]

Describe the bug
在混合推理训练的时候，开启了ignore_empty_think，并且数据集中非思考数据开头也加上了\n\n\n\n，训练后，并不能达到混合推理的效果，模型完全不思考

Additional context
NNODES=$NNODES
NPROC_PER_NODE=8
NODE_RANK=$NODE_RANK
megatron sft
--load Qwen3-1.7B-Base-mcore
--dataset ''
--loss_scale ignore_empty_think
--tensor_model_parallel_size 1
--sequence_parallel true
--micro_batch_size 1
--global_batch_size 128
--packing true
--recompute_granularity full
--recompute_method uniform
--recompute_num_layers 1
--max_epochs 3
--finetune true
--cross_entropy_loss_fusion true
--lr 2e-4
--min_lr 1e-12
--save megatron_output/random_select_1m_mixed_think
--save_interval 1500
--max_length 16384
--num_workers 8
--dataset_num_proc 8
--no_save_optim true
--no_save_rng true
--sequence_parallel true
--log_interval 1
--use_flash_attn true
--log_interval 1
--packing_cache shared_cache

[leipan797]

{
    "conversations": [
      {
        "from": "human",
        "value": "Is there any way to make the conversation more natural and fluid?\n\n"
      },
      {
        "from": "gpt",
        "value": "<think>\nOkay, the user is asking about making conversations more natural and fluid. Interesting! They didn't specify whether they mean human-to-human conversations or interactions with AI like me, but given the context, I'll assume they're referring to both - probably leaning toward improving daily dialogues with people.  \n\nHmm, the phrasing feels a bit broad. Maybe they've noticed their own conversations feeling stiff or awkward lately? Or perhaps they're preparing for an important discussion? I should cover universal principles that apply across scenarios.  \n\nFirst, let's unpack what \"natural and fluid\" really means. It's not just about smoothness—it's about authenticity, rhythm, and mutual engagement. People often mistake \"fluent\" for \"talking a lot,\" but real fluidity includes pauses, reactions, and even comfortable silences.  \n\nI recall research showing that listeners prioritize conversational ease over perfect grammar. So instead of suggesting fancy vocabulary, I'll emphasize listening, pacing, and responsiveness. The user might be overthinking their word choices mid-conversation, which ironically creates stiffness.  \n\n*Mental note: Avoid jargon.* They're likely seeking practical, actionable tips, not theory. I'll structure this as digestible habits rather than rules.  \n\nAh! Non-verbals matter hugely. People forget that fluidity includes nods, facial feedback, and posture. I'll weave that in subtly—maybe under \"being present\"?  \n\n*Pauses.* Right, the fear of silence! Many rush to fill gaps, making convos feel transactional. I should normalize brief pauses as natural rhythm keepers.  \n\nLastly, the vulnerability angle. Sharing minor, relatable imperfections (e.g., \"I always mix up similar-sounding words!\") can disarm tension. But caution: oversharing backfires. Need to strike that balance.  \n\n*User vibe check:* Feels like a genuine self-improvement seeker, not someone demanding quick hacks. I'll avoid robotic lists and keep tone warm yet precise.\n</think>\n\nAbsolutely! Making conversations feel natural and fluid is a skill you can develop. Here are key strategies, whether you're chatting with an AI, a colleague, a friend, or a stranger:\n\n### 🧠 Core Mindset Shifts\n1. **Focus on Connection, Not Perfection:** Aim for understanding and engagement, not flawless sentences.\n2. **Embrace \"Messiness\":** Real conversations have pauses, interruptions, and tangents. That's okay!\n3. **Be Present:** Listen actively instead of rehearsing your next line.\n\n### 💬 Practical Techniques for Fluidity\n1. **Listen Deeper Than Words:**\n   * Respond to the *intent* or *feeling* behind what's said (\"That sounds frustrating...\" instead of just \"I see\").\n   * Notice keywords to build on (\"You mentioned [topic]... tell me more about that?\").\n\n2. **Use Conversational Bridges:**\n   * **Acknowledge & Add:** \"Interesting point! That reminds me of...\" / \"I see what you mean. On a similar note...\"\n   * **Ask Follow-Up Questions:** Go beyond \"yes/no.\" Use \"How did that feel?\" / \"What happened next?\" / \"What made you think of that?\"\n   * **Brief Summaries:** \"So, if I understand, you're saying...\" (Shows you're listening and clarifies).\n\n3. **Sound Natural (Especially with AI):**\n   * **Talk Like You Talk:** Use contractions (\"don't,\" \"can't\"), occasional filler words (\"well,\" \"um\"), and natural phrasing. *Example:* Instead of \"Please provide instructions for...\" try \"How do I...?\"\n   * **Reference Earlier Points:** \"Going back to what you said about [topic]...\" (Creates continuity).\n   * **Express Curiosity Naturally:** \"Huh, I never thought about it that way. Why do you think...?\"\n\n4. **Mind the Flow:**\n   * **Pauses are Powerful:** A brief pause shows you're thinking. Don't fear silence.\n   * **Match Energy (Subtly):** If someone's excited, reflect some enthusiasm. If they're serious, be thoughtful.\n   * **Know When to Wrap or Shift:** \"Anyway...\" / \"But circling back...\" / \"Switching gears slightly...\"\n\n5. **Be Human (Vulnerability Helps):**\n   * **Share Briefly:** Offer small, relevant personal connections (\"I tried that once and totally failed!\").\n   * **Admit Uncertainty:** \"I'm not sure, but maybe...\" feels more real than a forced answer.\n   * **Use Light Humor (When Appropriate):** Self-deprecating jokes often ease tension.\n\n### 🤖 Specific Tip for AI Conversations\n* **Treat it like a collaborative chat:** \"Okay, we've got X figured out. Now, how about we tackle Y?\" or \"Based on what we discussed, maybe the next step is...?\"\n* **Rephrase if it feels stiff:** If the AI's response is overly formal, say \"Could you put that more casually?\" or \"Explain it like I'm a beginner.\"\n\n### 🚫 What to Avoid\n*   **Monologuing:** Keep contributions concise enough to invite responses.\n*   **Interrogation Mode:** Balance questions with statements and reactions.\n*   **Overthinking Mid-Conversation:** Focus on the *other person* (or the topic), not your own performance.\n*   **Forcing Transitions:** Let topics evolve organically sometimes.\n\n**Key Takeaway:** Fluidity comes from **active listening, genuine responsiveness, and embracing the natural rhythm of exchange.** Start by implementing one or two techniques (like better follow-up questions or using conversational bridges) and notice the difference! Practice makes it instinctive. 💬✨"
      },
      {
        "from": "human",
        "value": "Thank you for helping me!\n\n"
      },
      {
        "from": "gpt",
        "value": "<think>\n\n</think>\n\nYou're so welcome! 😊 It’s been a joy chatting with you—and remember, whether you need a deep conversation, help with a project, or just a laugh, I’m always here. Don’t hesitate to drop by anytime. Wishing you a fantastic day (or night!) ahead. Stay awesome! 🌟  \n\n*P.S. Want a parting gift? Here’s a random fun fact to send you off:*  \n**Honey never spoils.** Archaeologists have found edible honey in ancient Egyptian tombs over 3,000 years old! 🐝  \n\nSee you next time! ✨"
      }
    ],
    "system": ""
  }

[Jintao-Huang]

不会自动删除think...

你训练了多少个steps

[Jintao-Huang]

推理的效果截图发一下

[leipan797]

这是训练过程中的input_ids，<think>\n\n</think>\n\n没有读入

[Jintao-Huang]

今天会修复 稍等

[leipan797]

感谢涛哥🥰