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[Doc] add debugging tips#5409

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youkaichao merged 4 commits intovllm-project:mainfrom
youkaichao:doc_debugging
Jun 11, 2024
Merged

[Doc] add debugging tips#5409
youkaichao merged 4 commits intovllm-project:mainfrom
youkaichao:doc_debugging

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@youkaichao
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Add common tips for debugging hang/crash.

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Comment thread docs/source/getting_started/debugging.rst Outdated
Comment thread docs/source/getting_started/debugging.rst Outdated
@DarkLight1337
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DarkLight1337 commented Jun 11, 2024

Some users have reported slow loading of models (#5062 #5365 #5405). A troubleshooting guide for this issue would indeed be helpful.

@youkaichao
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@DarkLight1337 do you mean the "hang" may be caused by long model loading time?

@youkaichao youkaichao merged commit d8f31f2 into vllm-project:main Jun 11, 2024
@youkaichao youkaichao deleted the doc_debugging branch June 11, 2024 06:22
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DarkLight1337 commented Jun 11, 2024

@DarkLight1337 do you mean the "hang" may be caused by long model loading time?

Seems like it. They are all hanging after the logger prints the line

vLLM is using nccl==<version>

#5365 in particular captured the stack trace after terminating via Ctrl-C, showing that the program is getting stuck at the weight loading code. Not so sure about the others.

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@DarkLight1337 added in #5430 .

robertgshaw2-redhat pushed a commit to neuralmagic/nm-vllm that referenced this pull request Jun 12, 2024
joerunde pushed a commit to joerunde/vllm that referenced this pull request Jun 17, 2024
xjpang pushed a commit to xjpang/vllm that referenced this pull request Jun 27, 2024
xjpang pushed a commit to xjpang/vllm that referenced this pull request Jul 8, 2024
xjpang pushed a commit to xjpang/vllm that referenced this pull request Jul 24, 2024
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4 participants