A | 8月24日消息，IBM的大型机依然是很多银行、保险企业的核心设备，使用的也是IBM自研的Z系处理器，在日前的HotChips大会上IBM又宣布了全球首款双架构的大型机处理器。 (ECNS) -- Retired U.S. teacher Ronald Sakolsky, who once donated $5,000 to support China's desertification control efforts 26 years ago, reunited on Sunday with his Chinese friend Yin Yuzhen, a desertification fighter in Ordos, Inner Mongolia. Their story began in 1999, when Sakolsky taught English at a school in Henan Province under a teacher exchange program between the two countries. After watching a television news report about Yin's tireless work, he was deeply moved and raised the $5,000 to help Yin and her husband in their afforestation campaign. Yin spent almost all the money on buying more saplings, keeping just one dollar bill as a souvenir. Today, the slender saplings have grown into a vast forest. Yin gained national attention in May when she issued a public search for Sakolsky, which ended successfully. On the day of the reunion, Yin chose a green coat and arrived early at Ordos Ejin Horo International Airport. "I plant trees, and the earth is green," she said. The red scarf draped around her neck was the same one she had worn during her early days of planting trees in the desert, although it had been washed over and over again. She had practiced three English phrases: "Welcome to China," "my brother," and "more, more," her way of saying "Please eat more" to show hospitality. But when they finally met, she couldn't utter a single word. As Sakolsky came down the escalator, he kept wiping tears from his eyes. Yin hurried forward and held out her arms. The two held each other tightly, tears welling in their eyes. "This is a dream come true," said Sakolsky. "She made a promise 27 years ago and kept her promise. I never thought I would see her again. It is a miracle, but it shows culture and people can still keep promises." He praised Yin as an extraordinary woman who has made great contributions to China. He mentioned that he had intended to take a tree home to the United States, but was prohibited by law — which drew laughter from the tearful onlookers. Yet he was determined to bring back some sand home with him, saying in all seriousness that if necessary, he would pack it in his shoes. Invited by the China Education Association for International Exchange (CEAIE), his itinerary from Aug. 23 to Sept. 1 will also include China-U.S. teacher exchange events, a visit to Henan to meet with teachers and students at the school where he worked, a visit to the press briefing hall of the Chinese Ministry of Foreign Affairs, and visits to historical and cultural landmarks. Official figures show that China has contributed about one-quarter of the world's increase in green vegetation and rehabilitated 152 million mu (about 10.13 million hectares) of desertified land between 2021 and 2025. (By Zhang Dongfang) 
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B | IBM的大型机一直是独立的生态系统，但是现在ARM+Linux生态发展势不可挡，IBM不想失去这个市场的话就得支持ARM，但他们也不可能马上放弃自己的Z指令集，所以就有了这个可以切换架构的处理器。
C | 根据IBM的说法，这个处理器可以原生支持ARM及自己的Z指令集，并且可以纳秒级切换，该机制依赖于开源的KVM hypervisor，企业可以并行运行Arm64 Linux虚拟机和在Z虚拟机上的Linux，虚拟机管理程序调度虚拟机到物理核心时核心会自动切换模式，而且性能惩罚几乎是0，纳秒级延迟，实际几乎体验不到切换开销。
IBM没有明确这款芯片的具体明确，只公布了是2nm工艺，11核CPU架构，频率高达5.7GHz，会用于下一代大型机，预计是在2028年问世。 不过IBM所说的这一切还都是纸面上的，大型机的真实工作环境要求极高，能不能做到IBM所说的这样几乎无延迟切换、兼容性也不是问题，还得在未来几年中逐渐验证。 这款处理器的技术意义是非凡的，以往的双架构处理器也不是没有，但各自都是独立的，IBM是在内核层面做到了两种指令集切换，几乎没有延迟，毕竟大型机对工作可靠性的要求是极高的，这点上IBM需要保证不出问题。 这种双架构处理器不知道是否还会有其他公司跟进，估计是很难的，因为其他公司不一定有这样的需求，AMD/Intel的x86本身就能跑Linux系统，去兼容ARM指令集意义也不大，大部分企业都是选择一个指令集，也没有兼容2种指令集的需求。 国产的一些自研处理器倒是有这样的需求，但是这个设计又要考虑技术难度，还要考虑指令集授权，有需求的也做不到这一点，总之IBM在这个方向上应该是前无古人后无来者了，比他们强的没必要学，想学的又没IBM的本事。
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