International Business Machines Corporation

Tracy C Phillips

Jay Robert Herring

Scot H Rider

Todd Alan Strader

A method, apparatus and computer readable medium for transmitting at least one packet across a network destined for reception by at least one network endpoint. A plurality of packets is processed sequentially from a queue to be sent to at least one network endpoint. At least a first packet from the plurality of packets is transmitted to the network endpoint. The at least first packet transmitted to the network endpoint is determined to not have been acknowledged. A first retry packet associated with the at least first packet is transmitted to the at least one network endpoint. Transmission of packets other than the first retry packet is suspended to the network endpoint. The first retry packet is determined to have been acknowledged by the at least one network endpoint. Transmission of remaining packets in the plurality of packets to the at least one network endpoint is resumed.

Congestion reducing reliable transport packet retry engine

A system and method are provided in which communication adapters, which are used for the transfer of message packets from and amongst a plurality of data processing nodes, are provided with internal storage which is used to indicate the status of a particular adapter as a master, as a slave or as a backup up adapter. This information provides the adapters with the ability to be called into service to take over the operations of another adapter in the event of node or adapter failure.

Master-slave adapter

A system and method is provided for synchronizing time of day information between and among communication adapters. Time of day information, which is desired for proper message packet ordering and delivery, is recovered in a process in which a master adapter, connected to a master node, periodically broadcasts current time of day information to slave adapters which operate to determine whether or not drift correction is to be applied.

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Poughkeepsie, NY, United States of America

Tracy C Phillips