InfiniBand credit-less flow control for long distance links

Details InfiniBand credit-less flow control for long distance links InfiniBand credit-less flow control for long distance links

2011-05-31

2011-05-31

Pham, Chi H (Department: 2471)

Multiplex communications

Data flow congestion prevention or control

Reexamination Certificate

active

07952998

ABSTRACT:
An Infiniband flow control scheme disables credit based flow control so that transmission distances can be extended. An Infiniband credit based flow control suffers from round trip time lag that slows transmission rates. Disabling Infiniband credit based flow control enables back to back packet transmission because credit counts are ignored. Nonetheless, packets can be lost due to overruns in a receive buffer, therefore, packet drop detection mechanisms are employed so that the Infiniband receiver can send requests to the Infiniband transmitter to temporarily slow its Infiniband transmission rate.

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Infiniband Architecture Specification, vol. 1, Rel. 1.2, Oct. 2004.

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