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Historically, the steady growth of computer system performance depended on the performance of microprocessors, which depended on the scaling of devices and circuits to smaller dimensions. As scaling on the 2D surface of chips approaches practical limits, 3D technologies offer an opportunity for continued system improvements, even as the progress of scaling slows down. The eight papers in this issue describe the system design opportunities and challenges of 3D chip technology, as well as methods for producing dense arrays of through-silicon vias, thinned silicon, dense area-array silicon–silicon interconnection, chip stacking, and 3D wafer integration. Thermomechanical modeling and the implementation of 3D structures in products are also described.
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The IBM System z10 Enterprise Class server is a powerful mainframe system offering increased power efficiency, improved price/performance ratio, and expanded range of business solutions. It delivers high scalability for growth and large-scale consolidation, high availability to reduce risk and improve flexibility, and enhanced security. The 17 papers in this issue describe the design, testing, and verification of the z10 microprocessor, the I/O subsystem, and the packaging design of the central electronic complex. System software and performance are described in papers dealing with reliability, availability, and serviceability, autonomic capability and active resource monitoring, capacity-on-demand advancements, and performance improvements derived through novel software and hardware synergy.
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Since the first publication of the IBM Journal of Research and Development in 1957 and the IBM Systems Journal in 1962, these Journals have provided descriptions and chronicles of many important advances in information technology and related topics ranging from atoms to business solutions. To celebrate the 50th anniversary of the IBM Journals, this report highlights a selection of significant papers published in the Journals, along with brief commentaries. The Journal editors chose papers which were very highly cited in the technical literature, described technologies of historic significance, or provided an important overview of a field.
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