InfiniBand QP: Message Transfer Mechanism
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This chapter introduces the concept of the Queue Pair (QP), the message transfer engine that lies at the heart of the IBA technology. Request and response packets, Packet Sequence Numbers (PSNs), and the Verb Layer (a quasi-API used to control an IBA HCA) are introduced. The four IBA QP types are introduced and the concept of the QP Context and its contents are defined. Finally, there is a rather detailed example of a message transfer from one CA to another.
Reproduced from the book InfiniBand Network Architecture. Copyright © 2003 Pearson Education, Addison-Wesley Professional. All rights reserved. This chapter is reproduced with permission from Addison-Wesley.
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