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[Doc] add faqs:install vllm-ascend will overwrite existing torch-npu (#3245)

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### What this PR does / why we need it?
add faqs:install vllm-ascend will overwrite existing torch-npu

### Does this PR introduce _any_ user-facing change?

### How was this patch tested?

- vLLM version: v0.10.2
- vLLM main:
https://github.com/vllm-project/vllm/commit/releases/v0.11.0

Signed-off-by: weiguihua2 <weiguihua2@huawei.com>
This commit is contained in:
weiguihua2
2025-09-29 12:02:23 +08:00
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parent 373f84a193
commit 065486820b
1 changed files with 3 additions and 0 deletions
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docs/source/faqs.md
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@@ -211,3 +211,6 @@ Recommended mitigation strategies:
Root cause analysis:
The current stream requirement calculation for size captures only accounts for measurable factors including: data parallel size, tensor parallel size, expert parallel configuration, piece graph count, multistream overlap shared expert settings, and HCCL communication mode (AIV/AICPU). However, numerous unquantifiable elements - such as operator characteristics and specific hardware features - consume additional streams outside of this calculation framework, resulting in stream resource exhaustion during size capture operations.
### 21. Installing vllm-ascend will overwrite the existing torch-npu package？
Installing vllm-ascend will overwrite the existing torch-npu package. If you need to install a specific version of torch-npu, you can manually install the specified version of torch-npu after installing vllm-ascend.