Google Inc.

Hassan Mohamed Gamal Hassan Wassel

Nandita Dukkipati

Masoud Moshref Javadi

Prashant R Chandra

Amin Vahdat

Weihuang Wang

David E Culler

Srinivas Vaduvatha

Henry M Levy

Yuliang Li

Neelesh Bansod

Minlan Yu

Yang Zhou

Behnam Montazeri

Arjun Singhvi

Abhiram Ravi

The technology is directed to the use of a bitmap generated at a receiver to track the status of received packets sent by a transmitter. The technology may include a network device including an input port, output port, and circuitry. The circuitry may generate a transmitter bitmap that tracks each data packet sent to another network device. The circuitry of the network device may receive, from the other network device, a receiver bitmap that identifies each data packet that is received and not received from the network device. The circuitry may then determine which data packets to retransmit by comparing the transmitter bitmap to the receiver bitmap.

Early retransmission for hardware reliable transport

Aspects of the disclosure are directed to a low-latency, low-overhead fault tolerant remote memory framework, which packs similar-size in-memory objects into individual page-aligned spans and applies erasure coding on these spans. The framework fully utilizes efficient one-sided remote memory accesses (RMAs) to swap spans in and out using minimal network input/outputs (I/Os), with compaction techniques that reduce remote memory fragmentation. The framework can achieve lower tail latency and higher application performance compared to other fault tolerance solutions, at the cost of potentially more memory usage.

Fault tolerant disaggregated memory

Congestion control by adding a congestion signal tag header to each of one or more transmission packets prior to transmission of the transmission packets by the first node to a second node, the congestion signal tag header specifying one or more congestion signal types and, for each of the congestion signal types, specifying a congestion signal value by providing an initial congestion signal value for the congestion signal value; receiving one or more return packets generated by the second node in response to receipt of the transmission packets, the return packets including a congestion signal reflection header having one or more return congestion signal values, and the return congestion signal values corresponding respectively to the congestion signal types; and determining whether transmission rate control is necessary based on the return congestion signal values.

Network congestion control signaling on network devices

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San Jose, CA, United States of America

Hassan Mohamed Gamal Hassan Wassel