SAN JOSE (Reuters) -Advanced Micro Devices has forged close ties to a batch of artificial intelligence startups as part of the company’s effort to bolster its software and forge superior chip designs. As AI companies seek alternatives to Nvidia’s chips, AMD has begun to expand its plans to build a viable competing line of hardware, acquiring companies such as server maker ZT Systems in its quest to achieve that goal. But to build a successful line of chips also requires a powerful set of software to efficiently run the programs built by AI developers.