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Method, system, and storage medium for providing queue pairs for I/O adapters

An adapter, queue pair technology, applied in transmission systems, digital transmission systems, instruments, etc., can solve problems such as being no longer suitable for high-performance computing systems

Inactive Publication Date: 2008-12-10
INT BUSINESS MASCH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even now, the industry-standard mechanisms described above are no longer suitable for HPC systems

Method used

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  • Method, system, and storage medium for providing queue pairs for I/O adapters
  • Method, system, and storage medium for providing queue pairs for I/O adapters
  • Method, system, and storage medium for providing queue pairs for I/O adapters

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Embodiment Construction

[0016] Exemplary embodiments of the present invention provide low-latency queue pairs that eliminate the overhead associated with work queue units and define the mechanisms required to allow messages to be placed directly on the queue pair. The exemplary embodiments are best implemented in a distributed computing system, such as a prior art system area network (SAN) having end nodes, switches, routers, and links interconnecting these components. Figures 1 through 5 show various parts of an exemplary operating environment for an embodiment of the present invention. Fig. 6 shows a standard queue pair structure in the prior art. Figure 7 shows an exemplary embodiment of a low-latency queue pair.

[0017] Figure 1 is a diagram of a distributed computer system. The distributed computer system shown in FIG. 1 takes the form of a system area network (SAN) 100 and is provided for exemplary purposes only. The exemplary embodiments of the present invention described below can be impl...

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Abstract

The present invention provides methods, systems and storage media for queue pairs for I / O adapters that provide low latency queue pairs (QPs) for I / O adapters that eliminate overhead associated with Work Queue Elements (WQEs), And defines the mechanism needed to allow messages to be placed directly on the queue pair.

Description

technical field [0001] The present disclosure relates generally to computer and processor architecture, input / output (I / O) processing, operating systems, and more specifically, to low-latency queue pairs for I / O adapters ( QP). Background technique [0002] I / O adapters, such as remote direct memory access (RDMA) capable adapters, or RDMA network interface cards (RNICs), such as InfiniBand TM (IB) A host channel adapter (HCA), which defines queue pairs (QPs) for passing message information from software consumers to adapters over a network fabric. industry standards, such as those available from InfiniBand acquired by the Trade Association TM The architecture specification and iWarp from the RDMA Consortium specify that message information carried on a QP is in the form of a work queue element (WQE) carrying control information belonging to the message. Additionally, one or more data descriptors point to where the message data will be transmitted or the received message...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/00H04L12/56H04L12/861
Inventor 戴维·F.·克拉多克托马斯·A.·格里格凯文·J.·雷利
Owner INT BUSINESS MASCH CORP