Hewlett-packard Development Company, L.p.

Ashok Rajagopalan

Santosh Ananth Rao

Kishore Kumar Muppirala

Sriram Narasimhan

Harish S Babu

Chetan Yaliwal

A method and apparatus for receiving inbound data on an I/O device wherein a request to receive inbound data is received. A direct-data-placement request-tag is generated and associated with a pre-allocated buffer when the request requires direct data placement. A non-direct-data-placement request-tag is generated when the request does not require direct data placement. The received request is then augmented with a generated request-tag and directed to a data interface unit. A data packet that includes a reply-tag and a payload is then received in the data interface unit. The payload is directed from the data interface unit into a pre-allocated buffer when the reply-tag correlates with a request-tag that is associated with a pre-allocated buffer. Otherwise, the payload is retrieved from the data interface unit when the reply-tag does not correlate with a request-tag that is associated with a pre-allocated buffer.

Method and apparatus for direct reception of inbound data

A method for determining the criticality of a device in a multi-path computer configuration comprising the steps of: traversing a directed acyclic graph representing a platform hierarchy; and determining paths within the directed acyclic graph affected by the removal of the device. A computer system comprising a directed acyclic graph data structure representing a platform hierarchy; and a control arrangement for traversing the directed acyclic graph to determining paths therein affected by removal of a device.

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San Jose, CA, United States of America

Ashok Rajagopalan