SAN FRANCISCO — Korean conglomerates and global tech giants, including Nvidia Corp., agreed Friday to pursue a series of cooperation projects that together are worth $950 billion, a senior presidential official said. The projects include a long-term deal under which SK Group will supply $750 billion worth of high-performance semiconductors to global tech firms, including Nvidia, presidential chief of staff for policy Kim Yong-beom said at a press briefing. The agreement was reached during a high-level meeting in San Francisco that brought together the chiefs of global tech firms and the heads of South Korean conglomerates, including Samsung Electronics Co. Chairman Lee Jae-yong and SK Group Chairman Chey Tae-won. OpenAI Chief Executive Officer Sam Altman and Nvidia CEO Jensen Huang were also among those who attended the meeting. During the meeting, South Korean firms and global tech companies also agreed to pursue joint investment in large-scale AI data centers with a combined capacity of 5 gigawatts and 2 million graphics processing units (GPUs), Kim said. South Korea's internet portal