A sequencing-based taxonomy of I/0 systems and review of historical machines

Smotherman, Mark

doi:10.1145/71302.71303

Cited by 9 publications

(2 citation statements)

References 30 publications

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“…An I/O coherence maintaining method based on retransmission is proposed to improve reliability of the I/O coherence protocol. DMA [1] request is the cause of I/O coherence problem, so I/O coherence maintenance must deal with DMA. We designed I/O coherence request retry engine in IOU, and responsible for the retry DMA requests which can't be served by DCU until receive ACK response; Retry engine can ensure DMA data correct.…”

Section: I/o Coherence Robustness Design Based On Retransmissionmentioning

confidence: 99%

I/O Coherence Faulty Tolerance Method for Multi-Core Processor Based on Retry

Guo

Zhang

Gong

2013

AMM

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I/O Consistency problem is one of the key issues which Multi-Cores Processor design must face. With increasing of core number and complicating of cache level, the probability of I/O coherence packets blocked would increase, which would decrease I/O system efficiency significantly. An I/O coherence maintaining method based on retransmission is proposed to improve reliability of the I/O coherence protocol. Experimental results demonstrate that this method can enhance the robustness of I/O coherence protocol effectively.

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Section: I/o Coherence Robustness Design Based On Retransmissionmentioning

confidence: 99%

I/O Coherence Faulty Tolerance Method for Multi-Core Processor Based on Retry

Guo

Zhang

Gong

2013

AMM

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“…The MR57 was able to perform active polling, but this was limited to input through the TM keyboard on the QCM. First improvements in I/O management appeared in those years in the most advanced projects, such as the MIT TX-2 computer that featured an early form of synchronization by interrupts [Smotherman 1989]. …”

Section: Introducing Basic Concepts Of Computer Sciencementioning

confidence: 99%

A Virtual Experience on the Very First Italian Computer

Cignoni

Gadducci

Paci

2015

J. Comput. Cult. Herit.

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Despite their temporal proximity, the technologies of the early computers are far from us. Yet, they are part of the history of science and technology, and they deserve to be studied and popularized. Being machines made to run software programs, they should be exhibited running. Unfortunately, old machines still in working condition are extremely rare. Restoring or rebuilding an old computer is a hard, expensive task: the original components are rare, and the technology is forgotten and sometimes lost. The research needed to re-understand those computers has to adopt experimental archaeology methods: rebuilding old hardware/software requires proceeding by hypotheses and experiments.However, a rebuilt or restored computer is a unique exemplar and a precious specimen: it is not suitable to let people interact with it. A more flexible solution is to use software simulations. First of all, simulation is a valuable tool to carry out the experiments needed to study past technology. Second, the simulators are virtual replicas that let people fully understand the old machines by interacting with them without jeopardizing those precious relics of the past.This article presents the virtual rebuilding of the first computer made in Italy: the Macchina Ridotta (MR) of the University of Pisa. The MR was dismantled after few months of intensive usage to cannibalize the materials for a second computer. As a consequence, the MR disappeared from later chronicles and for many years was ignored by historians. When we attempted to reconstruct the MR history, we found that the survived documentation was far from complete. Simulation proved to be the key tool to support the experimental approach adopted for understanding the MR technology, rebuilding it, and assessing its achievements. The MR simulator is now used at the Museum of Computing Machinery of Pisa as a mean to truly experience a working session on the MR-a typical computer from the 1950s. The exhibit and the workshops, by exploiting the accurately reproduced characteristics of the MR, address popularization of computer science from several perspectives: from technological mechanisms to scientific foundations, passing through the representation of computers in popular culture.

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2020

Microprocessor 4

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A sequencing-based taxonomy of I/0 systems and review of historical machines

Cited by 9 publications

References 30 publications

I/O Coherence Faulty Tolerance Method for Multi-Core Processor Based on Retry

I/O Coherence Faulty Tolerance Method for Multi-Core Processor Based on Retry

A Virtual Experience on the Very First Italian Computer

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