[PD Disaggregation] Add unittest for splitwise deployment with using rdma

[juncaipeng]

Motivation

Add unittest
拆分PR: https://github.com/PaddlePaddle/FastDeploy/pull/5027/files

Modifications

Add unittest

Usage or Command

不变

Accuracy Tests

不需要

Checklist

• Add at least a tag in the PR title.
  • Tag list: [[FDConfig],[APIServer],[Engine], [Scheduler], [PD Disaggregation], [Executor], [Graph Optimization], [Speculative Decoding], [RL], [Models], [Quantization], [Loader], [OP], [KVCache], [DataProcessor], [BugFix], [Docs], [CI], [Optimization], [Feature], [Benchmark], [Others], [XPU], [HPU], [GCU], [DCU], [Iluvatar], [Metax]]
  • You can add new tags based on the PR content, but the semantics must be clear.
• Format your code, run pre-commit before commit.
• Add unit tests. Please write the reason in this PR if no unit tests.
• Provide accuracy results.
• If the current PR is submitting to the release branch, make sure the PR has been submitted to the develop branch, then cherry-pick it to the release branch with the [Cherry-Pick] PR tag.

[paddle-bot]

Thanks for your contribution!

[Copilot]

Pull request overview

This pull request adds RDMA (Remote Direct Memory Access) support for splitwise deployment in PD (Prefill-Decode) disaggregation scenarios. The PR introduces a new end-to-end test for RDMA-based cache transfer and includes a shell script utility for detecting RDMA-capable network interfaces.

Key Changes:

• Added RDMA network interface detection script (get_rdma_nics.sh) to identify appropriate NICs for different hardware configurations
• Implemented comprehensive E2E test (test_ernie_03b_pd_router_v1_rdma.py) for splitwise deployment using RDMA protocol for cache transfer
• Fixed minor issues in existing IPC-based test (corrected log file names and function call)

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 17 comments.

File	Description
tests/e2e/utils/get_rdma_nics.sh	New shell script that detects RDMA-capable network interfaces for GPU, XPU, CPU, and virtual configurations to enable RDMA-based cache transfer
tests/e2e/test_ernie_03b_pd_router_v1_rdma.py	New E2E test suite that validates splitwise deployment with RDMA protocol, testing both streaming and non-streaming chat/completion endpoints
tests/e2e/test_ernie_03b_pd_router_v1_ipc.py	Minor improvements: updated comment for clarity, fixed log filenames for consistency, and corrected cleanup function call

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
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Additional details and impacted files

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