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Matching incoming event notifications against received subscriptions is a fundamental part of every publish-subscribe infrastructure. In the case of content-based systems this is a fairly complex and time consuming task, whose performance impacts that of the entire system. In the past, several algorithms have been proposed for efficient content-based event matching. While they differ in most aspects, they have in common the fact of being conceived to run on conventional, sequential hardware. On the other hand, modern Graphical Processing Units (GPUs) offer off-the-shelf, highly parallel hardware, at a reasonable cost.
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