International Business Machines Corporation

Nandini Gaadam Nagaraj

Patrick James Meaney

Rajat Rao

Jason Andrew Thompson

Ashutosh Mishra

A computer system, computer readable storage medium, and computer-implemented method for dynamically degrading a link between multiple processing devices to facilitate uninterrupted service between the multiple processing devices. The method includes determining a number of undegraded lanes within the link. The method also includes determining, subject to the number of undegraded lanes, a first operational degrade mode for the link. The method further includes initiating a retrain of the link to a second operational degrade mode. The method also includes dynamically, subject to the first degrade mode of operation, determining one or more message packet types to transmit through the link during the link retrain, thereby facilitating uninterrupted service between the multiple processing devices.

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Bengaluru, India

Nandini Gaadam Nagaraj