Design lets chip manage local memory stores efficiently using an Internet-style communication network.
The more cores — or processing units — a computer chip has, the bigger the problem of communication between cores becomes. For years, Li-Shiuan Peh, the Singapore Research Professor of Electrical Engineering and Computer Science at MIT, has argued that the massively multicore chips of the future will need to resemble little Internets, where each core has an associated router, and data travels between cores in packets of fixed size.
This week, at the International Symposium on Computer Architecture, Peh’s group unveiled a 36-core chip that features just such a “network-on-chip.” In addition to implementing many of the group’s earlier ideas, it also solves one of the problems that has bedeviled previous attempts to design networks-on-chip: maintaining cache coherence, or ensuring that cores’ locally stored copies of globally accessible data remain up to date.
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The Latest on: Multicore chips
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The Latest on: Multicore chips
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