Computer program device and an apparatus for processing of data requests using a queued direct input-output device

• Main Authors: Hefferon, Eugene P, Wyman, Leslie W
• Format: Patent
• Language: English
• Published: 15.01.2002

The subject of the present invention in general pertains to a new Input-Output facility design that exploits high bandwidth integrated network adapters. A computer program device and an apparatus for proper processing of data requests. The apparatus determines which device is able to handle data requests in a computing network environment comprising a main memory having a queuing mechanism with a plurality of queues in processing communication with an adapter and a plurality of devices and/or processors. The format and attributes of devices in said the environment is determined as well as the size and attributes of the queues. When a request for data processing is received from at least one input/output device capable of attaching to the computing environment, the characteristics of any processors or device capable of processing the data is determined. A special store subchannel command is issued specifying which device or processor the request can be sent to after analyzing all information about the size, characteristics and attributes previously gathered. In this way information is provided about which processor or device can process the information using the special store subchannel command. The computer program storage device is readable by a digital processing apparatus and has program means for performing essentially the same tasks.