[TRTLLM-8817][chore] Set default value of KvCacheConfig.free_gpu_memory_fraction explicitly #8561
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Signed-off-by: junq <[email protected]>
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📝 WalkthroughWalkthroughKV cache GPU memory fraction handling is refactored by removing a private helper method and setting a default value of 0.9 at the KvCacheConfig level, with added validation to ensure the fraction remains within [0.0, 1.0]. Changes
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🧹 Nitpick comments (1)
tensorrt_llm/llmapi/llm_args.py (1)
1261-1265: Consider removingOptionalfrom the type annotation.Since
free_gpu_memory_fractionnow has a non-None default (0.9) and the validator doesn't handle None, theOptional[float]type annotation could be misleading. Users might assume they can set it to None, but that would fail validation.Consider this change:
- free_gpu_memory_fraction: Optional[float] = Field( + free_gpu_memory_fraction: float = Field( default=0.9,
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tensorrt_llm/_torch/pyexecutor/_util.py(1 hunks)tensorrt_llm/llmapi/llm_args.py(2 hunks)
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1349-1351: Avoid specifying long messages outside the exception class
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🔇 Additional comments (2)
tensorrt_llm/_torch/pyexecutor/_util.py (1)
296-296: LGTM! Clean refactoring.The direct access to
free_gpu_memory_fractionis cleaner than using a helper method, especially now that the default value (0.9) and validation are properly set at theKvCacheConfiglevel.tensorrt_llm/llmapi/llm_args.py (1)
1344-1352: LGTM! Proper validation added.The validator correctly enforces that
free_gpu_memory_fractionstays within the valid [0.0, 1.0] range, which prevents configuration errors.
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