Intel Corporation

Nathan S Miller

Keith D Underwood

Karl P Brummel

Charles A Giefer

Mark Debbage

Eric R Borch

Stephanie L Hirnak

Bruce M Pirie

David Addison

A computing device, a method, and a system to enforce concurrency limits within a network fabric. The computing device includes a memory device; and a network interface controller coupled to the memory device. The network interface controller includes circuitry to communicate with a plurality of target computing devices in a network fabric. The circuitry is configured to generate packets for transmission to respective ones of a plurality of target nodes. For each packet addressed to its corresponding target node, the circuitry is to determine whether transmitting the packet would violate the target node's concurrency limit. If transmitting the packet would not violate the target node's concurrency limit, the circuitry is to transmit the packet to the target node. However, if transmitting the packet would violate the target node's concurrency limit, the circuitry would store the packet in a retransmit buffer of the computing device, where the retransmit buffer is to further store already transmitted packets flagged for retransmission. The circuitry would then transmit the packet from the retransmit buffer when transmitting the packet from the retransmit buffer would not violate the target node's concurrency limit.

Device, method and system to enforce concurrency limits of a target node within a network fabric

Congestion management techniques for communication networks are described. In an example embodiment, an apparatus may comprise circuitry, a communication component for execution by the circuitry to receive a send request identifying a message to be received from an initiator device via a packet transfer process and transmit an acceptance to grant the send request, and a scheduling component for execution by the circuitry to determine whether to defer the packet transfer process and in response to a determination to defer the packet transfer process, select a value of a delay parameter to be included in the acceptance. Other embodiments are described and claimed.

Congestion management techniques for communication networks

In an embodiment, an out-of-order, reliable, end-to-end protocol is provided that can enable direct user-level data placement and atomic operations between nodes of a multi-node network. The protocol may be optimized for low-loss environments such as High Performance Computing (HPC) applications, and may enable loss detection and de-duplication of packets through the use of a robust window state manager at a target node. A multi-node network implementing the protocol may have increased system reliability, packet throughput, and increased tolerance for adaptively routed traffic, while still allowing atomic operations to be idempotently applied directly to a user memory location.

Reliable out-of order end-to-end protocol with robust window state overflow management and a multi-node system using same

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Seattle, WA, United States of America

Nathan S Miller