Lesson plan
Data diffusion machine
Data diffusion machine (DDM) is a historical virtual shared memory architecture where data is free to migrate through the machine. Shared memory machines are convenient for programming but do not scale beyond tens of processors. The DDM overcomes this problem by providing a virtual memory abstraction on top of a distributed memory machine. A DDM appears to the user as a conventional shared memory machine but is implemented using a distributed memory architecture. Data diffusion machines were under active research in the late 1980s and early 1990s, but the research has ceased since then.
Article summary
Data diffusion machine (DDM) is a historical virtual shared memory architecture where data is free to migrate through the machine. Shared memory machines are convenient for programming but do not scale beyond tens of processors. The DDM overcomes this problem by providing a virtual memory abstraction on top of a distributed memory machine. A DDM appears to the user as a conventional shared memory machine but is implemented using a distributed memory architecture. Data diffusion machines were under active research in the late 1980s and early 1990s, but the research has ceased since then.
Key claims
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.