[Bugfix] Fix 2 Node and Spec Decode tests

[DarkLight1337]

Fix 2-Node test OOM failure in distributed/test_pipeline_parallel.py::test_tp_language_generation[microsoft/Phi-3.5-MoE-instruct-parallel_setup18-ray-0-auto-test_option

Fix Spec Decode failure in spec_decode/e2e/test_ngram_correctness.py::test_ngram_e2e_greedy_correctness[1--1-1-256-test_llm_kwargs0-baseline_llm_kwargs0-per_test_common_llm_kwargs0-common_llm_kwargs0]

[github-actions]

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[youkaichao]

how is it related with

[2025-02-13T14:15:29Z] NotImplementedError: Prefix caching is not supported with sliding window. Run with --disable-sliding-window to use prefix caching.

?

[DarkLight1337]

how is it related with

[2025-02-13T14:15:29Z] NotImplementedError: Prefix caching is not supported with sliding window. Run with --disable-sliding-window to use prefix caching.

?

It seems that sliding window is somehow enabled when testing Phi3.5-MoE in PP (2 node) test

[youkaichao]

how is it related with

[2025-02-13T14:15:29Z] NotImplementedError: Prefix caching is not supported with sliding window. Run with --disable-sliding-window to use prefix caching.

?

It seems that sliding window is somehow enabled when testing Phi3.5-MoE in PP (2 node) test

And how is this PR fixing that?

[DarkLight1337]

I'm still trying to fix it... 😓 the test passes when I run it locally (single node) so it's difficult to debug.

[DarkLight1337]

The tests should pass now

[youkaichao]

thanks for the fix!