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An Active message (in computing) is a messaging object capable of performing processing on its own. This contrasts with traditional computer-based messaging systems in which messages are passive entities with no processing power.[1]
Distributed Memory Programming
Active messages are communications primitive for exploiting the full performance and flexibility of modern computer interconnects. They are often classified as one of the three main types of distributed memory programming, the other two being data parallel and message passing. The view is that Active Messages are actually a lower-level mechanism that can be used to implement data parallel or message passing efficiently.
The basic idea is that each message has a header containing the address of a userspace handler to be executed upon message arrival, with the contents of the message passed as an argument to the handler. Because the address of the handler must be known when composing the message, this mechanism is restricted to the SPMD programming model.
References
- ^ "The operational semantics of an active message system", ACM Portal. Accessed July 20, 2009
Sources and external links
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