CodeV: Empowering LLMs for Verilog Generation through Multi-Level Summarization
arxiv(2024)
摘要
The increasing complexity and high costs associated with modern processor
design have led to a surge in demand for processor design automation.
Instruction-tuned large language models (LLMs) have demonstrated remarkable
performance in automatically generating code for general-purpose programming
languages like Python. However, these methods fail on hardware description
languages (HDLs) like Verilog due to the scarcity of high-quality instruction
tuning data, as even advanced LLMs like GPT-3.5 exhibit limited performance on
Verilog generation. Regarding this issue, we observe that (1) Verilog code
collected from the real world has higher quality than those generated by LLMs.
(2) LLMs like GPT-3.5 excel in summarizing Verilog code rather than generating
it. Based on these observations, this paper introduces CodeV, a series of
open-source instruction-tuned Verilog generation LLMs. Instead of generating
descriptions first and then getting the corresponding code from advanced LLMs,
we prompt the LLM with Verilog code and let the LLM generate the corresponding
natural language description by multi-level summarization. Experimental results
show that CodeV relatively surpasses the previous open-source SOTA by 14.4
(BetterV in VerilogEval) and 11.3
relatively outperforms previous commercial SOTA GPT-4 by 22.1
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