Hyperparameter configuration in open-source LLMs for RTL generation produces up to 25.5% intra-model pass-rate variation on VerilogEval and RTLLM, exceeding inter-model spreads by 5x with near-zero correlation in optimal settings across benchmarks.
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Configuration Over Selection: Hyperparameter Sensitivity Exceeds Model Differences in Open-Source LLMs for RTL Generation
Hyperparameter configuration in open-source LLMs for RTL generation produces up to 25.5% intra-model pass-rate variation on VerilogEval and RTLLM, exceeding inter-model spreads by 5x with near-zero correlation in optimal settings across benchmarks.